Rinnai RL75IP High Efficiency Plus Direct Vent Tankless User Manual

Direct Vent Tankless Water

Heater Installaon and

Operaon Manual

— Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other

appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instrucons.

• If you cannot reach your gas supplier, call the re department.

— Installaon and service must be performed by a licensed professional.

This enre manual must be le for the consumer. The consumer must read and

refer to this manual for proper operaon and to maintain the water heater.

If the informaon in these instrucons is not followed exactly, a re or explosion

may result causing property damage, personal injury, or death.

WARNING

READ ALL OF THE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR OPERATING THIS WATER HEATER.

This manual provides informaon on the installaon, operaon, and maintenance of the water heater. For proper

operaon and safety, it is important to follow the instrucons and adhere to the safety precauons.

A licensed professional must install the water heater according to the exact instrucons on pages 4-30.

The consumer must read the enre manual to properly operate the water heater and to have regular maintenance

performed.

ANS Z21.10.3 ● CSA 4.3

FOR INDOOR APPLICATIONS ONLY

RL75i ..................... REU-VC2528FFUD-US

REU-VC2528FFUD-US(A)

RLX94i ................... REU-VC2737FFUD-US

RL94i ..................... REU-VC2837FFUD-US

FOR OUTDOOR APPLICATIONS ONLY

RL75e .................... REU-VC2528WD-US

REU-VC2528FFUD-US(A)

RL94e .................... REU-VC2837WD-US

SANITATION

Low Lead Content

NSF/ANSI 372

C US

2 VC Series Manual

Table of Contents

This is the safety alert symbol. This symbol alerts you to potenal hazards that can kill or hurt you

and others.

Indicates an imminently hazardous situaon which, if not avoided, will result in death or

serious injury.

Indicates a potenally hazardous situaon which, if not avoided, could result in death or

serious injury.

Indicates a potenally hazardous situaon which, if not avoided, could result in minor or

moderate injury. It may also be used to alert against unsafe pracces.

DANGER

CAUTION

WARNING

Table of Contents ..................................................... 2

Safety Behaviors and Pracces for the

Consumer and Installer ............................................ 3

Installaon Instrucons

(for the licensed professional) ............................. 4

Prepare for Installaon ...................................... 5

Determine Installaon Locaon ........................ 6

Freeze Protecon ............................................. 11

Checklist to Determine Installaon Locaon ... 12

Mount to Wall .................................................. 12

Remove the Front Panel .................................. 12

Installaon of Venng (indoor models only) ... 13

Condensate (indoor models only).................... 15

Checklist for Venng and Condensate

(indoor models only) ........................................ 15

Installaon of Plumbing ................................... 16

Checklist for Plumbing ..................................... 19

Installaon of Gas Supply ................................ 19

Connect Electricity ........................................... 21

Adjust for High Altude ................................... 21

Adjust for Vent Length (indoor models only) .. 21

Checklist for Gas and Electricity ....................... 21

Installaon of Temperature Controller ............ 22

Final Checklist ................................................... 24

Technical Data ........................................................ 25

Specicaons ................................................... 25

Dimensions ....................................................... 26

Pressure Drop and Water Flow Curves ............ 27

Ladder Diagram ................................................ 28

Recirculaon Mode .......................................... 29

Operaon Instrucons ....................................... 31

Consumer Operaon Guidelines for the

Safe Operaon of your Water Heater .............. 32

How to Use the Temperature Controller ......... 33

How to Set the Temperature ........................... 34

Diagnosc Codes .............................................. 36

Required Maintenance..................................... 39

Freeze Protecon and Winterizaon ........ 40

Flushing the Heat Exchanger..................... 41

Manual Draining of the Water Heater ...... 42

State Regulaons .................................................... 43

Replacement Parts ................................................. 44

Consumer Warranty ............................................... 45

French Version ........................................................ 48

Important Safety Informaon

Safety Denions

NOTICE: Rinnai somemes shares customer contact informaon with businesses that we believe provide

products or services that may be useful to you. By providing this informaon, you agree that we can

share your contact informaon for this purpose. If you prefer not to have your informaon shared with

these businesses, please contact customer service and ask not to have your informaon shared. We

will however, connue to contact you with informaon relevant to the product(s) you registered and/

or your account with us.

If you have any quesons or feel that the manual is incomplete contact Rinnai at 1-800-621-9419.

VC Series Manual 3

CAUTION

• BURN HAZARD. Hot exhaust and vent may cause

serious burns. Keep away from water heater unit.

Keep small children and animals away from the

unit.

• Hot water outlet pipes leaving the unit can be hot

to touch. In residenal applicaons, insulaon

must be used for hot water pipes below 36” due to

burn risk to children.

Safety Behaviors and Pracces for the Consumer and Installer

• Before operang, smell all around the appliance

area for gas. Be sure to smell next to the oor

because some gas is heavier than air and will sele

on the oor.

• Keep the area around the appliance clear and free

from combusble materials, gasoline, and other

ammable vapors and liquids.

• Combusble construcon refers to adjacent walls

and ceiling and should not be confused with

combusble or ammable products and materials.

Combusble and/or ammable products and

materials should never be stored in the vicinity of

this or any gas appliance.

• Always check the water temperature before

entering a shower or bath.

• To protect yourself from harm, before performing

maintenance:

 Turn o the electrical power supply by

unplugging the power cord or by turning o the

electricity at the circuit breaker. (The

temperature controller does not control the

electrical power.)

 Turn o the gas at the manual gas valve, usually

located immediately below the water heater.

 Turn o the incoming water supply. This can be

done at the isolaon valve immediately below

the water heater or by turning o the water

supply to the building.

WARNING

• Use only your hand to push in or turn the gas

control knob. Never use tools. If the knob will not

push in or turn by hand, do not try to repair it; call a

licensed professional. Force or aempted repair

may result in a re or explosion.

• Do not use this appliance if any part has been under

water. Immediately call a licensed professional to

inspect the appliance and to replace any part of the

control system and any gas control which has been

under water.

• Do not use substute materials. Use only parts

cered for the appliance.

• Should overheang occur or the gas supply fail to

shut o, turn o the manual gas control valve to the

appliance.

• Do not adjust the DIP switch unless specically

instructed to do so.

• Do not use an extension cord or an adapter plug

with this appliance.

• Any alteraon to the appliance or its controls can be

dangerous and will void the warranty.

California law requires this noce to be provided:

California Proposion 65:

This product contains chemicals known to the state of California to cause cancer, birth defects, or other

reproducve harm.

WARNING

4 VC Series Manual

It is recommended that a licensed professional install

the appliance, inspect it, and leak test it before use.

The warranty may be voided due to any improper

installaon.

The installer should have skills such as:

• Gas sizing.

• Connecng gas lines, water lines, valves, and

electricity.

• Knowledge of applicable naonal, state, and

local codes.

• Installing venng through a wall or roof.

• Training in installaon of tankless water heaters.

(Training can be accessed on-line at

www.trainingevents.rinnai.us)

Installaon Instrucons

Installaon Steps

Prepare for Installaon ...................................... 5

Determine Installaon Locaon ......................... 6

Checklist to Determine Installaon Locaon ... 12

Mount to Wall .................................................. 12

Remove the Front Panel .................................. 12

Installaon of Venng (indoor models only) ... 13

Condensate (indoor models only) .................... 15

Checklist for Venng and Condensate

(Indoor models only) ........................................ 15

Installaon of Plumbing ................................... 16

Checklist for Plumbing ..................................... 19

Installaon of Gas Supply ................................. 19

Connect Electricity ........................................... 21

Adjust for High Altude ................................... 21

Adjust for Vent Length (indoor models only) .. 21

Checklist for Gas and Electricity ....................... 21

Installaon of Temperature Controller ............ 22

Final Checklist................................................... 24

General Instrucons Installer Qualicaons

DO NOT

• Do not install the RL75i, RL94i, or the RLX94i

outdoors.

• Do not install the RL75e or the RL94e indoors.

• Do not install the appliance in an area where water

leakage of the unit or connecons will result in

damage to the area adjacent to the appliance or to

lower oors of the structure. When such locaons

cannot be avoided, it is recommended that a

suitable drain pan, adequately drained, be installed

under the appliance. The pan must not restrict

combuson air ow.

• Do not obstruct the ow of combuson and

venlaon air. Combuson air shall not be

supplied from occupied spaces.

• Do not use this appliance in an applicaon such as

a pool or spa heater that uses chemically treated

water . (This appliance is suitable for lling large or

whirlpool spa tubs with potable water.)

• Do not use substute parts that are not authorized

for this appliance.

MUST DO

• The installaon must conform with local codes or,

in the absence of local codes, with the Naonal

Fuel Gas Code, ANSI Z223.1/NFPA 54, or the

Natural Gas and Propane Installaon Code, CSA

B149.1. If installed in a manufactured home, the

installaon must conform with the Manufactured

Home Construcon and Safety Standard, Title 24

CFR, Part 3280 and/or CAN/SCA Z240 MH Series,

Mobile Homes.

• The appliance, when installed, must be electrically

grounded in accordance with local codes or, in the

absence of local codes, with the Naonal Electrical

Code, ANSI/NFPA 70, or the Canadian Electrical

Code, CSA C22.1.

• The appliance and its appliance main gas valve

must be disconnected from the gas supply piping

system during any pressure tesng of that system

at test pressures in excess of 1/2 psi (3.5 kPa)

(13.84 in W.C.).

Type of installaon

• For installaon in residenal and commercial

applicaons.

• Cered for installaon in manufactured (mobile)

homes.

VC Series Manual 5

Prepare for installaon

Parts included

Tools needed

Materials needed

• The appliance must be isolated from the gas supply

piping system by closing its individual manual

shuto valve during any pressure tesng of the gas

supply piping system at test pressures equal to or

less than 1/2 psi (3.5 kPa) (13.84 in W.C.).

• You must follow the installaon instrucons and

those in Care and Maintenance for adequate

combuson air intake and exhaust.

INFORMATION

• If a water heater is installed in a closed water

supply system, such as one having a backow

preventer in the cold water supply line, means

shall be provided to control thermal expansion.

Contact the water supplier or local plumbing

inspector on how to control thermal expansion.

• Should overheang occur or the gas supply fail to

shut o, turn o the manual gas control valve to

the appliance.

• Keep the air intake locaon free of chemicals such

as chlorine or bleach that produce fumes. These

fumes can damage components and reduce the life

of your appliance.

• Tankless water heater

• Color coded cold (blue) and hot (red) isolaon

valves

• Pressure relief valve

• MC-91-2 temperature controller (integrated into

indoor models; provided with outdoor models)

• Pipe wrenches (2)

• Adjustable pliers

• Screwdrivers (2)

• Wire cuers

• Gloves

• Safety glasses

• Level

Tools that might be needed

• Hammer drill with

concrete bits

• Saw

• Threading machine with

heads and oiler

• Core drill with diamond

head

• Torch set

• Copper tubing cuer

• Steel pipe cuer

Materials that may be needed

• Soap or gas leak

detector soluon

• Approved venng

• Teon tape

(recommended) or pipe

compound

• Heat tape

• Pipe insulaon

• Electrical wire and

conduit per local code

• Concrete wall anchors

• Oponal pipe cover

• Oponal temperature

controller

• 5/8” ID PVC exible

tubing

• 2 conductor 22 AWG

wire for controller

• Single gang electrical

box

• Wire nuts

• Unions and drain valves

General Instrucons (connued)

6 VC Series Manual

Environment

Air surrounding the water heater, venng, and vent

terminaon(s) is used for combuson and must be free

of any compounds that cause corrosion of internal

components. These include corrosive compounds that

are found in aerosol sprays, detergents, bleaches,

cleaning solvents, oil based paints/ varnishes, and

refrigerants. The air in beauty shops, dry cleaning

stores, photo processing labs, and storage areas for pool

supplies oen contains these compounds. Therefore it

is recommended that outdoor models be used for these

locaons where possible.

The water heater, venng, and vent terminaon(s)

should not be installed in any areas where the air may

contain these corrosive compounds. If it is necessary for

a water heater to be located in areas which may contain

corrosive compounds, the following instrucons are

strongly recommended.

IMPORTANT CONSIDERATIONS FOR:

Indoor/Internal Water Heaters

• DO NOT Install in areas where air for combuson

can be contaminated with chemicals.

• Before installaon, consider where air has the

ability to travel within the building to the water

heater.

• Where possible, install the water heater in a sealed

closet so that it is protected from the potenal of

contaminated indoor air.

• Chemicals that are corrosive in nature should not

be stored or used near the water heater.

Outdoor/External Water Heaters and Vent

Terminaons of Indoor/Internal Water Heaters

• Install the water heater as far away as possible

from exhaust vent hoods.

• Install as far away as possible from air inlet vents.

Corrosive fumes may be released through these

vents when air is not being brought in through

them.

• Chemicals that are corrosive in nature should not

be stored or used near the water heater or vent

terminaon.

Damage and repair due to corrosive compounds in the

air is not covered by warranty.

Consideraon of care for your water heater should

include evaluaon of water quality.

The water must be potable, free of corrosive chemicals,

sand, dirt, or other contaminates. It is up to the

installer to ensure the water does not contain corrosive

chemicals, or elements that can aect or damage the

heat exchanger. Water that contains chemicals

exceeding the levels below aect and damage the heat

exchanger. Replacement of the heat exchanger due to

water quality damage is not covered by the warranty.

Maximum Level

Total Hardness Up to 200 mg / L

Aluminum * Up to 0.2 mg / L

Chlorides * Up to 250 mg / L

Copper * Up to 1.0 mg / L

Dissolved Carbon Dioxide (CO2) Up to 15.0 mg / L or PPM

Iron * Up to 0.3 mg / L

Manganese * Up to 0.05 mg / L

pH * 6.5 to 8.5

TDS (Total Dissolved Solids) * Up to 500 mg / L

Zinc * Up to 5 mg / L

Determine Installaon Locaon

Water Quality

* Source: Part 143 Naonal Secondary Drinking Water

Regulaons

If you install this water heater in an area that is known

to have hard water or that causes scale build-up the

water must be treated and/or the heat exchanger

ushed regularly.

When scale build-up in the heat exchanger begins to

aect the performance of the water heater, a diagnosc

code “LC#” will display. Flush the heat exchanger to

prevent damage to it. Scale build up is caused by hard

water set at a high temperature.

Rinnai oers Southeastern Filtraon’s “ScaleCuer

Water Condioning System” that oers superior lime

scale prevenon and corrosion control by feeding a

blend of control compounds into the cold water

supply.

You must ensure that clearances will be met and that

the vent length will be within required limits. Consider

the installaon environment, water quality, and need

for freeze protecon. Requirements for the gas line,

water lines, electrical connecon, and condensate

disposal can be found in their respecve installaon

secons of this manual.

Part Number Descripon

103000038

Southeastern Filtratrion

ScaleCuer System 3/4” Feed

103000039

ScaleCuer Rell

VC Series Manual 7

[1] A vent shall not terminate directly above a sidewalk or paved driveway that is

located between two single family dwellings and serves both dwellings.

[2] Permied only if veranda, porch, deck, or balcony is fully open on a minimum of

two sides beneath the oor.

 For clearances not specied in ANSI Z223.1/NFPA 54, clearances are in

accordance with local installaon codes and the requirements of the gas supplier.

Clearance to opposite wall is 24 inches (60 cm).

For indoor models, you must install a vent terminaon to bring in combuson air and expel exhaust.

Direct Vent (Indoor Unit) Other than direct vent (Outdoor unit)

Ref

Descripon

Canadian Installaons

(CSA B149.1)

US Installaons

(ANSI Z223.1 / NFPA 54)

Canadian Installaons

(CSA B149.1)

US Installaons

(ANSI Z223.1 / NFPA 54)

A Clearance above grade, veranda, porch, deck, or balcony 12 inches (30 cm) 12 inches (30 cm) 12 inches (30 cm) 12 inches (30 cm)

B Clearance to window or door that may be opened 36 inches (91 cm) 12 inches (30 cm)

6 in (15 cm) for appliances ≤ 10,000 Btuh (3

kW), 12 in (30 cm) for appliances > 10,000

Btuh (3 kW) and ≤ 100,000 Btuh (30 kW), 36 in

(91 cm) for appliances >100,000 Btuh (30 kW)

4  (1.2 m) below or to

side of opening; 1  (300

mm) above opening

C Clearance to permanently closed window * * * *

Vercal clearance to venlated sot, located above the

terminal within a horizontal distance of 2 feet (61 cm)

from the center line of the terminal

* * * *

E Clearance to unvenlated sot * * * *

F Clearance to outside corner * * * *

G Clearance to inside corner * * * *

Clearance to each side of center line extended above

meter/regulator assembly

* * * *

I Clearance to service regulator vent outlet

Above a regulator

within 3  (91 cm)

horizontally of the

vercal center line of

the regulator vent

outlet to a maximum

vercal distance of 15

 (4.5 m)

Above a regulator within 3  (91 cm)

horizontally of the vercal center line of the

regulator vent outlet to a maximum vercal

distance of 15  (4.5 m)

Clearance to nonmechanical air supply inlet to building or

the combuson air inlet to any other appliance

36 inches (91 cm) 12 inches (30 cm)

6 in (15 cm) for appliances ≤ 10,000 Btuh (3

kW), 12 in (30 cm) for appliances > 10,000

Btuh (3 kW) and ≤ 100,000 Btuh (30 kW), 36 in

(91 cm) for appliances >100,000 Btuh (30 kW)

4  (1.2 m) below or to

side of opening; 1  (300

mm) above opening

K Clearance to a mechanical air supply inlet 6  (1.83 m)

3  (91 cm) above if

within 10  (3 m)

horizontally

6  (1.83 m)

3  (91 cm) above if within

10 feet (3 m) horizontally

Clearance above paved sidewalk or paved driveway

located on public property

7  (2.13 m)  * 7  (2.13 m) [1] 7 . (2.13 m)

M Clearance under veranda, porch, deck, or balcony 12 inches (30 cm)  * 12 inches (30 cm) [2] *

Terminal Clearances

AIR SUPPLY INLET

VENT TERMINAL

AREA WHERE TERMINAL IS

NOT PERMITTTED

SNOW

TERMINATION

Clearance in

Ref. A also

applies to

anticipated

snow line

8 VC Series Manual

24"

Check to determine whether local codes supersede

these clearances.

• Avoid terminaon locaons near a dryer vent.

• Avoid terminaon locaons near commercial

cooking exhaust.

• You must install a vent terminaon at least 12

inches above the ground.

60"

(1.52 m)

between

terminals at

dierent levels

(0.61 m) to wall or parapet

(0.30 m) between

terminals at same

level

12"

V V

(1.52 m) vercally

between terminals

60"

Addional clearances - RL75i, RL94i, RLX94i

12"

36"

INSIDE

CORNER

V V

(0.30 m ) to

an inside

corner

(0.30 m) between

terminals at same

level

Important consideraons for locang vent

terminaon under a sot (venlated or unvenlated

or eave vent; or to a deck or porch)

• Do not install vent terminaon under a sot vent

such that exhaust can enter the sot vent

• Install vent terminaon such that exhaust and

rising moisture will not collect under

eaves. Discoloraon to the exterior of the

building could occur if installed too close.

• Do not install the vent terminaon too close

under the sot where it could present

recirculaon of exhaust gases back into the

combuson air intake part of the terminaon.

VC Series Manual 9

12"

60"

36"

Local codes supersede these clearances.

• Avoid terminaon locaons near a dryer vent.

• Avoid terminaon locaons near commercial

cooking exhaust.

• Avoid terminaon locaons near any air inlets.

Addional clearances

RL75e, RL94e

(0.30 m) to an

inside corner

(50 mm) between terminals at same level

(1.52 m) vercally

between terminals

(0.91 m) to venlated or unvenlated

sot or eve vent; or to a deck or porch

36 in.

2 in.

12 in.

60 in.

10 VC Series Manual

Unit clearances

* 0 inches from vent components and condensate

drain line.

The clearance for servicing is 24 inches in front of the

water heater.

For closet installaon, clearance is 6 inches (152 mm)

from the front of the water heater.

Indoor models: RL75i, RL94i, RLX94i

Outdoor models: RL75e, RL94e

The clearance for servicing is 24 inches in front of the

water heater.

to Combusbles

inches (mm)

to Non-

Combusbles

inches (mm)

Top of Heater 12 (305) 2 (51)

Back of Heater 0 (zero) 0 (zero)

Front (Panel) 24 (610) 0 (zero)

Front (Exhaust) 24 (610) 24 (610)

Sides of Heater 6 (152) 1/8 (3.2)

Ground/Boom 12 (305) 2 (51)

to Combusbles

inches (mm)

to Non-

Combusbles

inches (mm)

Top of Heater 6 * (152) 2 *(51)

Back of Heater 0 (zero) 0 (zero)

Front of Heater 6 (152) 6 (152)

Sides of Heater 2 (51) 1/2 (13)

Ground/Boom 12 (305) 12 (305)

Vent 0 (zero) 0 (zero)

to side

to front

to top

to ground/bottom

to side

to front

to top

to ground/bottom

VC Series Manual 11

Freeze Protecon

Make sure that in case of freezing weather that the

water heater and its water lines are protected to

prevent freezing. Damage due to freezing is not

covered by the warranty.

With electrical power and gas supplied, the water

heater will not freeze when the outside air

temperature is as cold as –22°F (-30°C) for indoor

models or is as cold as –4°F (-20°C) for outdoor

models, when protected from direct wind exposure.

Because of the “wind-chill” eect, any wind or

circulaon of the air on the unit will reduce its ability

to protect itself from freezing.

In the event of a power failure and/or gas

interrupon at temperatures below freezing the

water heater should be drained of all water to

prevent freezing damage. In addion, drain the

condensate trap and drain line.

Loss of freeze protecon may result in water damage

from a burst heat exchanger or water lines.

The unit may be drained manually. However, it is

highly recommended to:

• drain down solenoid valves be purchased and

installed that will automacally drain the unit if

power is lost. These are available in a kit,

104000059. (The condensate trap is not aected

by the auto drain down solenoid valves and will

have to be manually drained.)

• a surge protector with terminals be purchased

and installed which allows the solenoid valves to

operate if the unit is disabled due to a diagnosc

code. This is available as 104000057.

In addion, the solenoid valves should be connected

electrically to a surge protector with terminals. This

allows the solenoid valves to operate if the water

heater is disabled due to a diagnosc code.

The freeze protecon features will not prevent the

external piping from freezing. It is recommended that

hot and cold water pipes be insulated. Pipe cover

enclosures may be packed with insulaon for added

freeze protecon.

Maximum vent length

(indoor models only)

1. Determine the number of 90 degree elbows in

the vent system. (Two 45 degree elbows count as

one 90 degree elbow.)

2. Refer to the table to nd the maximum vent

length based on the number of elbows.

3. Adjust switch No. 1 in the SW1 DIP switch (tan

switches) if required by the applicable note.

 If the length is greater than 21  (6.4 m) then

move switch No. 1 (SW1) to OFF.

 If the length is greater than 15  (4.6 m) then

move switch No. 1 (SW1) to OFF.

 If the length is greater than 9  (2.7 m) then move

switch No. 1 (SW1) to OFF.

 Move switch No. 1 (SW1) to OFF.

Example: If you have one elbow then your maximum

vent length is 35 feet (10.7 m). If your

actual length is greater than 15  (4.6 m)

then move switch no. 1 (SW1) to OFF.

Number of

90° Elbows

Maximum vent length

0 41  (12.5 m) 

1 35  (10.7 m) 

2 29  (8.8 m) 

3 23  (7.0 m) 

4 17  (5.2 m) 

5 11  (3.4 m) 

6 5  (1.5 m) 

If you have a longer vent length (see number 3

regarding max. vent length), switch No. 1 is required

to be in the OFF posion. This ensures the water

heater will run properly. Blocked ue diagnosc

codes and shutdowns may result if switch No. 1 is not

in the correct posion.

NOTICE

12 VC Series Manual

Mount to Wall

wall installaon

brackets

1. Idenfy the installaon locaon and conrm that

the installaon will meet all required clearances.

2. Securely aach the water heater to the wall

using any of the holes in the wall installaon

brackets which are at the top and boom of the

water heater. Ensure that the aachment

strength is sucient to support the weight.

Refer to the weight of the water heater in the

Specicaons secon.

Use a leveling tool to ensure that the water

heater is level. Proper operaon requires that

the water heater be level.

NOTE: The water heater must be installed in an

upright posion. Do not install upside down or on its

side.

Checklist to Determine Installaon

Locaon

□ The water heater is not exposed to corrosive

compounds in the air.

□ The water heater locaon complies with the

clearances.

□ For indoor models, the planned venng will not

exceed the maximum length for the number of

elbows used.

□ The planned venng terminaon/air intake

locaon meets the clearances.

□ Indoor air is not being used for combuson.

□ The water supply does not contain chemicals or

exceed total hardness that will damage the heat

exchanger.

□ A standard 3 prong 120 VAC, 60 Hz properly

grounded wall outlet (for indoor models) or other

120 VAC, 60 Hz source is available.

□ The installaon must conform with local codes or,

in the absence of local codes, with the Naonal

Fuel Gas Code, ANSI Z223.1/NFPA 54, or the

Natural Gas and Propane Installaon Code, CSA

B149.1. If installed in a manufactured home, the

installaon must conform with the Manufactured

Home Construcon and Safety Standard, Title 24

CFR, Part 3280 and/or CAN/SCA Z240 MH Series,

Mobile Homes.

□ Leave the enre manual taped to the water

heater (indoor models), temperature controller

(outdoor models), or give the enre manual

directly to the consumer.

Remove the Front Panel

Slide the plasc trim pieces on each side of the water

heater to expose the screws.

Remove the 4 screws and pull o the front panel.

VC Series Manual 13

Manufacturer

Listed and Tested Vent Products

for RL75i, RL94i, and RLX94i

Telephone Fax Contact

Ubbink Rolux Vent System 800-621-9419 678-829-1666 www.rinnai.us

Heat-Fab Saf-T Vent SC system 800-772-0739 413-863-4803

custsvc@heat-fab.com,

www.heaab.com

Metal-Fab Corr/Guard Vent/Air Intake System 800-835-2830 316-943-2717

[email protected],

www.metal-fabinc.com

Installaon of venng (indoor models only)

Install the correct venng for your model according to the venng manufacturer’s instrucons and the

guidelines below.

Refer to the manufacturer’s technical literature for specic part numbers and instrucons.

Venng Guidelines

DO NOT

• Do not use PVC, CPVC, ABS or galvanized material

to vent this appliance.

• Do not combine vent components from dierent

manufacturers.

• Vent diameter must not be reduced.

• Do not connect the venng system with an

exisng vent or chimney.

• Do not common vent with the vent pipe of any

other water heater or appliance.

MUST DO

• This water heater is a direct vent water heater and

therefore is cered and listed with the vent

system. You must use vent components that are

cered and listed with the water heater model.

• The vent system must vent directly to the outside

of the building and use outside air for combuson.

• Avoid dips or sags in horizontal vent runs by

installing supports per the vent manufacturer’s

instrucons.

• Support horizontal vent runs every four feet and

all vercal vent runs every six feet or in

accordance with local codes.

• Venng should be as direct as possible with a

minimum number of pipe ngs.

• Vent connecons must be rmly pressed together

so that the gaskets form an air ght seal.

• The vent piece connected to the water heater

must be secured with one self-tapping screw.

INFORMATION

• Refer to the instrucons of the vent system

manufacturer for component assembly

instrucons.

• If the vent system is to be enclosed, it is suggested

that the design of the enclosure shall permit

inspecon of the vent system. The design of such

enclosure shall be deemed acceptable by the

installer or the local inspector.

NOTICE

If it becomes necessary to access an enclosed vent

system for service or repairs, Rinnai is not responsible

for any costs or dicules in accessing the vent

system. The warranty does not cover obtaining

access to a vent system in an enclosed environment.

14 VC Series Manual

Flue Installaon (indoor models only)

Vercal Terminaon

(condensate collector must be used in all installaons)

3 in (75 mm)

minimum

3 in (75 mm)

minimum

Horizontal Terminaon using Condensate Collector

3 in (75 mm)

minimum

Condensate

Trap

To adjust the condensate collector posion or to

replace the female vent top with a male vent top:

1. Loosen the 4 screws at the rear bracket

2. Slide the bracket away from the female vent top.

3. Remove the 4 screws aaching the female vent top

to the water heater.

4. Li up the female vent top and reposion as desired

(or replace with a male vent top).

5. Install the 4 screws at the vent top and ghten the 4

screws at the bracket.

Secure the rst vent component to the water heater

with one self-tapping screw at the hole located above

the condensate collector.

Bracket

Condensate Collector

Securing Screw

Horizontal Terminaon without using the Condensate Collector

Maximum Height *

5 feet (1.52 m)

Regions of cold climate will create more

condensate in the vent system. The

condensate collector should be used in

cold climates.

If more than one elbow is used in the

vercal secon the condensate collector

must be used.

* The condensate collector must be used in

horizontal terminaons if a vercal rise in

the vent system exceeds 5.

If the condensate collector is not used, the drain pipe must

be capped to prevent exhaust gases and condensate from

entering the building. The cap is supplied on the appliance.

In such an instance slope the venng 1/4” per foot away

from appliance according to vent manufacturer’s

installaon instrucons.

WARNING

Install the venng terminaon according to the diagrams and instrucons below.

Slope the venting 1/4” per foot toward

the appliance according to the vent

manufacturers installation instructions.

Dispose of condensate per local codes.

VC Series Manual 15

Condensate

(indoor models only)

Condensate can form in the vent of high eciency

direct vent appliances. Without proper drainage,

condensate will damage the heat exchanger.

To prevent condensate damage, follow these

instrucons.

DO NOT

• Do not allow condensate to enter the water

heater.

• Do not connect the condensate drain pipe directly

to the rain sewer.

• Do not connect the condensate drain line with an

air condioning evaporator coil drain or.

• Do not connect the condensate drain line to the

pressure relief valve/line of the appliance.

MUST DO

• Use only venng that is approved and idened as

acceptable for your parcular model.

• For vercal terminaons, install a condensate drain

and trap as close as possible to the appliance.

• Slope the venng toward the appliance according

to the vent manufacturer’s installaon

instrucons.

• All condensate must drain and be disposed of

according to local codes.

• Use only corrosion resistant materials for the

condensate drain lines such as PVC pipe or plasc

hose.

• The condensate drain pipe (along its enre length)

must be at least the same diameter as the drain

line, (5/8 inch NPT).

• The end of the condensate drain pipe should be

open to the atmosphere. The end should not be

under water or other substances.

• To minimize freezing of the condensate, run the

condensate drain line through an interior wall or

between insulaon and an interior wall.

• The condensate collector should be used for all

combinaon domesc/hydronic heang

applicaons.

Checklist for Venng and

Condensate (indoor models only)

□ Verify proper clearances around the vent

terminaons and air intakes.

□ Ensure you have used the correct venng

products for the model installed and that you

have completely followed the venng

manufacturer’s installaon instrucons and these

installaon instrucons.

□ Verify that the vent pipe has a downward slope or

grade to the outside of 1/4 inch per foot (1.2° )

OR if the vent pipe is sloped toward the water

heater (as some local codes require), that a

condensate collector is installed to allow

condensaon to drain away from the water

heater to a proper drain source.

□ Verify that condensate will not be allowed to

drain back into the water heater.

□ Verify that the vent system does not exceed the

maximum length for the number of elbows used.

INFORMATION

• A condensate trap is available, P/N 222053.

• Regions of cold climate will create more

condensate in the vent system. The condensate

collector should be used in cold climates.

• The condensate drain pipe should be as short as

possible and have a downward pitch.

16 VC Series Manual

Installaon of Plumbing

A manual water control valve must be placed in the

water inlet connecon to the water heater before it is

connected to the water line. Unions may be used on

both the hot and cold water lines for future servicing

and disconnecon of the unit.

DO NOT

• Do not introduce toxic chemicals such as those

used for boiler water treatment to the potable

water used for space heang.

MUST DO

• The piping (including soldering materials) and

components connected to this appliance must be

approved for use in potable water systems.

• Purge the water line to remove all debris and air.

Debris will damage the water heater.

• If the appliance will be used as a potable water

source, it must not be connected to a system that

was previously used with a nonpotable water

heang appliance.

• Ensure that the water lter on the water heater is

clean and installed.

Piping Requirements

Pressure Relief Valve Requirements

Install the pressure relief valve according to these

instrucons.

An approved pressure relief valve is required by the

American Naonal Standard (ANSI Z21.10.3) for all

water heang systems and shall be accessible for

servicing.

DO NOT

• Do not plug the relief valve and do not install any

reducing ngs or other restricons in the relief

line. The relief line should allow for complete

drainage of the valve and the line.

• Do not place any other type valve or shuto device

between the relief valve and the water heater.

MUST DO

• The relief valve must comply with the standard for

Relief Valves and Automac Gas Shuto Devices for

Hot Water Supply Systems ANSI Z21.22 and /or the

standard Temperature, Pressure, Temperature and

Pressure Relief Valves and Vacuum Relief Valves,

CAN1-4.4.

• The relief valve must be rated up to 150 psi and to

at least the maximum BTU/hr of the appliance.

• The discharge from the pressure relief valve should

be piped to the ground or into a drain system per

local codes.

• The pressure relief valve must be manually

operated once a year to check for correct

operaon.

• The relief valve should be added to the hot water

outlet line and near the hot water outlet according

to the manufacturer’s instrucons. DO NOT place

any other type valve or shut o device between

the relief valve and the water heater.

INFORMATION

• If a relief valve discharges periodically, this may be

due to thermal expansion in a closed water supply

system. Contact the water supplier or local

plumbing inspector on how to correct this

situaon. Do not plug the relief valve.

• The American Naonal Standard (ANSI Z21.10.3)

does not require a combinaon temperature and

pressure relief valve for this appliance. However,

local codes may require a combinaon

temperature and pressure relief valve.

Isolaon Valves

Isolaon valves are included with this water heater.

Rinnai strongly recommends the installaon of

isolaon valves on the cold and hot water lines

because they provide the ability to isolate the water

heater from the structure’s plumbing and allow quick

access to ush the heat exchanger. Flushing the heat

exchanger regularly is required as part of the proper

maintenance for this water heater.

Water discharged from the pressure relief valve could

cause severe burns instantly or death from scalds.

WARNING

VC Series Manual 17

Isolaon Valves and Pressure Relief Valve

Pressure Relief Valve (PRV) Installaon Instrucons:

The PRV must be connected to the 3/4” threaded port on the HOT (RED) water service valve (will be adjacent to

or above the shut o, never below). Installaon must maintain a ¾” port size with no shut o valve or line

restricon in-between the appliance and the PRV. The discharge line from the PRV should pitch downward and

terminate 6” above drains where discharge will be clearly visible. The discharge end of the line shall be plain

(unthreaded) and a minimum of ¾” in diameter. The discharge line material must be suitable for water at least

180° Fahrenheit. No valve of any type may be installed in the discharge line of the pressure relief valve.

Pressure Relief Valve Maintenance:

For proper care of this approved pressure relief valve, it is recommended that the valve is manually operated

once a year. In doing so, it will be necessary to take precauons with regard to the discharge of potenally

scalding hot water under pressure. Ensure discharge water has a safe place to ow. Contact with your body or

other property may cause damage or harm.

Please note that only the PRV in this package is cered by CSA Internaonal as an approved item.

The isolaon valves provide the ability to isolate the water heater from the structure’s plumbing and allow quick

access to ush the heat exchanger. Check with local codes to determine if a pressure and temperature relief

valve is required. The included valves meet American Naonal Standard (ANSI Z21.10.3) / Canadian Standard

(CSA 4.3) and are ANSI/NSF 61 approved for potable water.

Isolaon Valves Installaon Instrucons:

1. Wrap the threaded end of the approved pressure relief valve with a minimum of 5 wraps of Teon® tape.

2. Install the pressure relief valve to the 3/4” threaded port on the HOT (RED) water service valve (will be

adjacent to or above the cut o, never below). See Pressure Relief Valve Secon for proper installaon

requirements.

3. Posion the Hot Isolaon Valve (Red) below the Hot Outlet side of the water heater.

4. Hand ghten the Swivel Nut of the Hot Isolaon Valve (Red) to the Hot Outlet side of the water heater.

5. Rotate the Drain Valve to an accessible posion. With a wrench, ghten the Swivel Nut to the water heater.

6. Repeat steps 3-5 for the Cold Isolaon Valve (Blue).

7. Connect the Cold Isolaon Valve (Blue) to the Cold Water Supply Line.

8. Connect the Hot Isolaon Valve (Red) to the Hot Water Supply Line.

9. Ensure that both Drain Valves are in the closed posion before turning on water supply.

Cold Inlet

Swivel Nut (Integrated Gasket)

Drain Valve

Cold Isolaon Valve

(Blue)

Hot Isolaon Valve

(Red)

Hot Outlet

Pressure

Relief Valve

18 VC Series Manual

Piping Diagram for Basic Installaon

3/4" Hot Water Supply Line

Rinnai

Water Heater

Rinnai

Equipment List

Rinnai

Water Heaters

RIK-KIT (Optional)

(3/4" Fittings Include:

2 Unions, 2 Ball Valves,

2 Drain Valves and

1 Pressure Relief Valve.)

QTY

For Building Fixtures

Pressure Relief Valve

3/4" Ball Valve

3/4" Union

Check Valve

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

KEY

This is not an engineered drawing. It is intended only as a guide and not

as a replacement for professionally engineered project drawings. This

drawing is not intended to describe a complete system. It is up to the

contractor/engineer to determine the necessary components and

configuration of the particular system being installed. This drawing does

not imply compliance with local building code requirements. It is the

responsibility of the contractor/engineer to ensure installation is in

accordance with all local building codes. Confer with local building

officials before installation.

VC Series Manual 19

Connect Water Heater to Water Supply

Water connecons to the tankless water heater

should follow all state and local plumbing codes.

If this is a standard installaon, refer to the Piping

Diagram for Basic Installaon.

1. Plumb water supply to the tankless water heater

on the 3/4” MNPT connecon at the boom of

the unit marked “Water Inlet”, which is the cold

water supply.

2. Plumb the building hot water supply to the 3/4”

MSPT connecon marked “Water Outlet”, which

is the hot water supply.

If a pipe cover will be installed, make sure water lines

to the water heater t.

Checklist for Plumbing

□ Purge the water line of all debris and air by

closing the hot isolaon valve and opening the

cold isolaon valve and its drain. Debris will

damage the water heater. Use a bucket or hose

if necessary.

□ Ensure that hot and cold water lines are not

crossed to the unit and are leak free.

□ Ensure that a pressure relief valve is installed with

a rang that exceeds the BTU input of the water

heater model. Refer to the rang plate on the

side of the water heater for BTU input.

□ Clean the inlet water lter by closing the cold and

hot water inlet isolaon (shut-o) valves. Put a

bucket under the lter at the boom of the water

heater to catch any water that is contained inside

the unit. Unscrew the water lter. Rinse the

lter to remove any debris. Install the lter and

open the isolaon valves.

□ Check for proper water pressure to the water

heater. Minimum/Maximum water pressure is

20-150 psi. Rinnai recommends 30-80 psi for

maximum performance.

Installaon of Gas Supply

MUST DO

• A manual gas control valve must be placed in the

gas supply line to the water heater. A union can be

used on the connecon above the shut o valve

for the future servicing or disconnecon of the

unit.

• Check the type of gas and the gas inlet pressure

before connecng the water heater. If the water

heater is not of the gas type that the building is

supplied with, DO NOT connect the water heater.

Contact the dealer for the proper unit to match the

gas type.

• Check the gas supply pressure immediately

upstream at a locaon provided by the gas

company. Supplied gas pressure must be within

the limits shown in the Specicaons secon of

this manual with all gas appliances operang.

• Before placing the appliance in operaon, all joints

including the heater must be checked for gas

ghtness by means of leak detector soluon, soap

and water, or an equivalent nonammable

soluon, as applicable. (Since some leak test

soluons, including soap and water, may cause

corrosion or stress cracking, the piping shall be

rinsed with water aer tesng, unless it has been

determined that the leak test soluon is non-

corrosive.)

• Use approved connectors to connect the unit to

the gas line. Purge the gas line of any debris

before connecon to the water heater.

General Instrucons

WARNING

1. A licensed professional must install the gas

supply.

2. Turn o 120v power supply.

3. Turn o the gas.

4. Gas is ammable. Do not smoke or provide other

ignion sources while working with gas.

5. Do not turn on the water heater or gas unl all

fumes are gone.

20 VC Series Manual

Size the gas pipe

The gas supply must be capable of handling the enre

gas load required at the locaon. Gas line sizing is

based on gas type, the pressure drop in the system,

the gas pressure supplied, and gas line type. For gas

pipe sizing in the United States, refer to the Naonal

Fuel Gas Code, NFPA 54. The below informaon is

provided as an example. The appropriate table from

the applicable code must be used.

1. For some tables, you will need to determine the

cubic feet per hour of gas required by dividing the

gas input by the heang value of the gas

(available from the local gas company). The gas

input needs to include all gas products at the lo-

caon and the maximum BTU usage at full load

when all gas products are in use.

2. Use the table for your gas type and pipe type to

nd the pipe size required. The pipe size must be

able to provide the required cubic feet per hour

of gas or the required BTU/hour.

Example:

The heang value of natural gas for your locaon is

1000 BTU/FT

. The gas input of the RL94i is 199,000

BTU/HR. Addional appliances at the locaon require

65,000 BTU/hr. Therefore the cubic feet per hour =

(199,000 + 65,000) / 1000 = 264 FT

/HR. If the pipe

length is 10 feet then the 3/4 inch pipe size is capable

of supplying 264 FT

/HR of natural gas.

Gas Input of all gas products (BTU / HR)

Heang Value of Gas (BTU / FT

)

Cubic Feet

per Hour =

(CFH)

• Any compound used on the threaded joint of the

gas piping shall be a type that resists the acon of

liqueed petroleum gas (propane / LPG).

• The gas supply line shall be gas ght, sized, and so

installed as to provide a supply of gas sucient to

meet the maximum demand of the heater and all

other gas consuming appliances at the locaon

without loss of pressure.

INFORMATION

• Refer to an approved pipe sizing chart if in doubt

about the size of the gas line.

Length

Pipe Size (inches)

3/4 1 1 1/4 1 1/2

10 273 514 1060 1580

20 188 353 726 1090

30 151 284 583 873

40 129 243 499 747

50 114 215 442 662

60 104 195 400 600

70 95 179 368 552

80 89 167 343 514

90 83 157 322 482

100 79 148 304 455

Pipe Sizing Table - Natural Gas

Inlet Pressure: less than 2 psi (55 inches W.C.)

Pressure Drop: 0.3 inches W.C.

Specic Gravity: 0.60

Schedule 40 Metallic Pipe

cubic feet per hour

Length

Pipe Size (inches)

1/2 3/4 1 1 1/4

10 291 608 1150 2350

20 200 418 787 1620

30 160 336 632 1300

40 137 287 541 1110

50 122 255 480 985

60 110 231 434 892

80 101 212 400 821

100 94 197 372 763

Pipe Sizing Table - Propane Gas

Inlet Pressure: 11.0 inches W.C.

Pressure Drop: 0.5 inches W.C.

Specic Gravity: 1.50

Schedule 40 Metallic Pipe

Capacity in Thousands of BTU per Hour

VC Series Manual 21

Connect Electricity

Do not rely on the gas or water piping to ground the

water heater. A screw is provided in the juncon box

for the grounding connecon.

The water heater requires 120 VAC, 60 Hz power from

a properly grounded circuit.

If using the 5 foot long power cord, plug it into a

standard 3 prong 120 VAC, 60 Hz properly grounded

wall outlet.

On outdoor models, a disconnect switch must be

provided and installed for the incoming 120 VAC

power. It should be a type that is suitable for outdoor

use. Check the Naonal Electrical Code, ANSI/NFPA

70 and your local codes for a proper switch type to

use in your area.

The wiring diagram is located on the Technical Sheet

aached to the inside of the front cover.

WARNING

Do not use an extension cord or an adapter plug with

this appliance.

The water heater must be electrically grounded in

accordance with local codes and ordinances or, in the

absence of local codes, in accordance with the

Naonal Electrical Code, ANSI/NFPA No. 70.

Indoor water heaters are equipped with a three-

prong (grounding) plug for your protecon against

shock hazard and should be plugged directly into a

properly grounded three-prong receptacle. Do not

cut or remove the grounding terminal from this plug.

Checklist for Gas and Electricity

□ A manual gas control valve is placed in the gas

line to the water heater.

□ Check the gas lines and connecons for leaks.

□ Conrm that the gas inlet pressure is within

limits.

□ Conrm that the water heater is rated for the gas

type supplied.

□ Conrm that the electricity is supplied from 120

VAC, 60 Hz power source and is in a properly

grounded circuit.

□ Conrm an extension cord or an adapter plug has

not been used with the water heater.

□ For indoor models verify that switch No. 1 in the

SW1 DIP switch (tan switches) has been adjusted

for vent length if necessary. Refer to the secon

on Maximum Vent Length.

Adjustment for High Altude

Installaons

On the SW1 DIP switch (tan switches), set switches 2

and 3 to the values shown in table below for your

altude. The default seng for the appliance is 0-

2000  (0-610 m) with switches No. 2 and No. 3 in the

OFF posion.

When the DIP switch is adjusted, it is not necessary to

adjust the gas pressure seng for high altude.

Altude

SW1

Switch

No. 2

SW1

Switch

No. 3

0-2000  (0-610 m) OFF OFF

2001-5200  (610-1585 m) OFF ON

5201-7700  (1585-2347 m) ON OFF

7701-10200  (2347-3109 m) ON ON

Adjustment for Vent Length

(Indoor models only)

Adjust switch No. 1 in the SW1 DIP switch (tan

switches) if required. Refer to the secon “Maximum

vent length”.

22 VC Series Manual

Installaon of Temperature Controller

Controller Locaon

Cable Lengths and Sizes

• The controller should be out of reach of small

children.

• Avoid locaons where the controller may become

hot (near an oven or radiant heater).

• Avoid locaons in direct sunlight. The digital

display may be dicult to read in direct sunlight.

• Avoid locaons where the temperature controller

could be splashed with liquids.

• Do not install in locaons where the controller

can be adjusted by the public.

Indoor models have their controller built into the

front panel. Addional controllers can be installed.

The cable for the temperature controller should be a

non-polarized two-core cable with a minimum gauge

of 22 AWG. The maximum cable length from each

controller to the water heater depends on the total

number of wired controllers connected to the water

heater.

Number of Wired

Controllers

Maximum Cable Length for each

Controller to Water Heater

1 328  (100 m)

2 164  (50 m)

3 or 4* 65  (20 m)

Turn the power o. Do not aempt to connect the

temperature controller(s) with the power on.

Although the controller is a low voltage device, there

is 120 volt potenal next to the temperature

controller connecons inside the unit.

Do not connect the temperature controller to the

120VAC terminals provided for the oponal solenoid

drain valves.

WARNING

Conguraons

A maximum of 4 temperature controllers can be

installed for a water heater or bank of water heaters.

This includes the controller built into an indoor water

heater. Controllers can only be wired in parallel.

Controllers cannot be wired in series.

The 4 temperature controllers can consist of mulple

MC-91-2 or MCC-91-2 but only one BC-100V and only

one MC-100V.

(MC-91-1 should not be installed on a unit that

already has an MC-91-2 connected)

The clock funcon on the BC-100V will only be

available if an MC-100V is also connected.

If 4 MC-91-2’s are installed, simultaneously press the

Priority and On/O buons on the fourth controller

unl a beep sounds.

Wire controllers in parallel

Maximum 4 Controllers

Rinnai

Water

Heater

* Only 3 addional controllers can be wired to the

indoor water heater.

VC Series Manual 23

Mounng the controller

1. Make three holes in the wall as shown.

2. Run the cable between the controller and the

water heater or the controller and another

controller.

3. Remove the face plate from the temperature

controller using a screwdriver.

4. Connect the cable to the temperature controller.

5. Mount the controller to the wall using the holes

drilled in step 1.

6. Disconnect the power from the water heater.

7. Remove the plasc cover from the PCB and

electrical connecons.

8. Thread the cable through the access hole at the

base of the unit and connect the wires to the

controller terminals on the right hand side boom

of the PCB.

9. Secure the controller cable using the clamp

provided.

10. Replace plasc cover over PCB and then replace

the cover of the water heater.

Outline of Remote

securing screw

1-21/32"

3-5/16"

securing screw

wiring hole

24 VC Series Manual

Final Checklist

□ The water heater is not subject to corrosive

compounds in the air.

□ The water supply does not contain chemicals or

exceed total hardness that will damage the heat

exchanger.

□ Clearances from the water heater unit are met.

□ Clearances from the vent terminaon / air intake

are met.

□ For indoor models, ensure you have used the

correct venng products for the model installed

and that you have completely followed the

venng manufacturer’s installaon instrucons

and these installaon instrucons.

□ For indoor models, verify that the vent system

does not exceed the maximum length for the

number of elbows used.

□ For indoor models verify that switch No. 1 in the

SW1 DIP switch (tan switches) has been adjusted

for vent length if necessary. Refer to the secon

on Maximum Vent Length.

□ For indoor models, verify that the vent pipe has a

downward slope or grade to the outside of 1/4

inch per foot (1.2° ) OR, if the vent pipe is sloped

toward the water heater (as some local codes

require), that a condensate collector is installed

to allow condensaon to drain away from the

water heater to a proper drain source.

□ For indoor models, verify that condensate will not

be allowed to drain back into the water heater.

□ Purge the water line of all debris and air by

closing the hot isolaon valve and opening the

cold isolaon valve and its drain. Debris will

damage the water heater. Use a bucket or hose

if necessary.

□ Ensure that hot and cold water lines are not

crossed to the unit and are leak free.

□ Clean the inlet water lter by closing the cold and

hot water inlet isolaon (shut-o) valves. Put a

bucket under the lter at the boom of the water

heater to catch any water that is contained inside

the unit. Unscrew the water lter. Rinse the

lter to remove any debris. Install the lter and

open the isolaon valves.

□ Ensure that a pressure relief valve is installed with

a rang that exceeds the BTU input of the water

heater model. Refer to the rang plate on the

side of the water heater for BTU input.

□ A manual gas control valve has been placed in the

gas line to the water heater.

□ Check the gas lines and connecons for leaks.

□ Conrm that the gas inlet pressure is within

limits.

□ Conrm that the water heater is rated for the gas

type supplied.

□ Conrm that the electricity is supplied from a 120

VAC, 60 Hz power source, is in a properly

grounded circuit, and turned on.

□ Verify the temperature controller is funconing

properly.

□ Verify that switches No. 2 and No. 3 in the SW1

DIP switch (tan switches) is set correctly for your

altude.

□ Verify the system is funconing correctly by

connecng your manometer to the gas pressure

test port on the water heater. Operate all gas

appliances in the home or facility at high re. The

inlet gas pressure at the water heater must not

drop below that listed on the rang plate.

□ DO NOT introduce toxic chemicals such as those

used for boiler water treatment to the potable

water used for space heang.

□ If the water heater is not needed for immediate

use, then drain the water from the heat

exchanger.

□ Install the front panel.

□ Explain to the customer the importance of not

blocking the vent terminaon or air intake.

□ Explain to the customer the operaon of the

water heater, safety guidelines, maintenance, and

warranty.

□ The installaon must conform with local codes or,

in the absence of local codes, with the Naonal

Fuel Gas Code, ANSI Z223.1/NFPA 54, or the

Natural Gas and Propane Installaon Code, CSA

B149.1. If installed in a manufactured home, the

installaon must conform with the Manufactured

Home Construcon and Safety Standard, Title 24

CFR, Part 3280 and/or CAN/SCA Z240 MH Series,

Mobile Homes.

□ Inform the consumer if the isolaon valves are

not installed or if a water soening system is not

installed.

□ Leave the enre manual taped to the water

heater (indoor models), temperature controller

(outdoor models), or give the enre manual

directly to the consumer.

VC Series Manual 25

Technical Data

Specicaons

* Minimum ow may vary slightly depending on the temperature seng and the inlet water temperature.

Minimum acvaon ow is 0.4 GPM (1.5 L/min).

Our products are connually being updated and improved; therefore, specicaons are subject to change without prior noce.

The maximum inlet gas pressure must not exceed the value specied by the manufacturer. The minimum value listed is for the

purpose of input adjustment.

RL75i RLX94i RL94i RL75e RL94e

Minimum Gas Consumpon Btu/h 10,300

Maximum Gas Consumpon Btu/h 180,000 192,000 199,000 180,000 199,000

Hot water capacity (Min - Max) *

0.26 - 7.5 GPM

(1.0 - 28.5 L/min)

0.26 - 9.8 GPM

(1.0 - 37.0 L/min)

0.26 - 9.8 GPM

(1.0 - 37.0 L/min)

0.26 - 7.5 GPM

(1.0 - 28.5 L/min)

0.26 - 9.8 GPM

(1.0 - 37.0 L/min)

Temperature Seng (no controller) 120° F (49° C) or 140° F (60° C)

Maximum Temp Seng (residenal) Selectable at 120° F (49° C) or at 140° F (60° C)

Maximum Temp Seng

(MCC-91 controller)

160° F (71° C) 185° F (85° C) 185° F (85° C) 160° F (71° C) 185° F (85° C)

Minimum Temperature Seng 98° F (37° C)

Weight 45.6 lb (20.7 kg) 46.3 lb (21.0 kg) 46.3 lb (21.0 kg) 43.6 lb (19.8 kg) 44.3 lb (20.1 kg)

Noise level 49 dB (excluding start up or shutdown)

Electrical Data

Normal 76 W 97 W 97 W 57 W 65 W

Standby 2 W

An-frost Protecon 120 W 104 W

Max Current

Without recirculaon pump: 4 A

With recirculaon pump: 8 A (exact value depends on the pump)

Fuse 10 A

By-Pass Control Fixed Electronic Electronic Fixed Electronic

Gas Supply

Pressure

Natural Gas 4.0 - 10.5 inch W.C.

Propane 8.0 - 13.5 inch W.C.

Type of Appliance Direct Vent, Tankless, Temperature controlled connuous ow gas hot water system

Connecons Gas Supply: 3/4" MNPT, Cold Water Inlet: 3/4" MNPT, Hot Water Outlet: 3/4" MNPT

Ignion System Direct Electronic Ignion

Electric Connecons

Appliance: AC 120 Volts, 60Hz.

Temperature Controller: DC 12 Volts (Digital)

Water Temperature Control Simulaon Feedforward and Feedback

Water Supply Pressure Minimum Water Pressure: 20 PSI (Recommended 30-80 PSI for maximum performance)

Maximum Water Supply Pressure 150 PSI

Temperature Control Cable Non-Polarized Two Core Cable (Minimum 22 AWG)

Cered for installaon in

manufactured (mobile) homes

Yes

Complies with South Coast Air Quality

Management District 14 ng/J or 20

ppm NOx emission levels

Yes Yes No Yes Yes

26 VC Series Manual

Dimensions

RL75i, RL94i, RLX94i

RL75e, RL94e

0.4~1.8(10~45) Variable

14.04 (356.6)

22.95 (583)

9.27 (235.5)

5.05 (128.1)

2.67 (67.8)

9.27 (235.5)

22.95 (583)

0.28 (7.2)

0.59 (15)

14.04 (356.6)

1.14 (29)

2.23 (56.6)

DIMENSION Inches (mm) DIMENSION Inches (mm)

A (GAS) 1.31 (33.2) D 4.33 (110)

A (COLD) 1.93 (49) E 2.89 (73.3)

A (HOT) 1.35 (34.4) F 1.85 (47)

B 4.21 (106.9) G 3.44 (87.3)

C 1.17 (29.8)

Inches (millimeters)

8.90 (226)

DIMENSION Inches (mm) DIMENSION Inches (mm)

A (GAS) 1.31 (33.2) D 4.33 (110)

A (COLD) 1.93 (49) E 2.91 (73.8)

A (HOT) 1.35 (34.4) F 1.61 (40.8)

B 3.96 (100.7) G 2.87 (73)

C 1.17 (29.8)

VC Series Manual 27

100

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

45.00

50.00

55.00

60.00

0 1 2 3 4 5 6 7 8 9 10 11

Pressure Drop Curve

RL94, RLX94

RL75

Pressure Loss ( head)

Water Flow (gpm)

Pressure Loss (psi)

Water Flow Curve

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

0 25 50 75 100 125 150

Water Flow (gpm)

delta T - Temperature Rise (° F)

RL94

RL75

RLX94i

28 VC Series Manual

Ladder Diagram

VC Series Manual 29

Recirculaon Mode

The Rinnai water heater has the ability to control a

recirculaon pump. Two modes are available,

Economy and Comfort, which recirculate the water in

the plumbing system to provide hot water more

quickly when a tap is opened.

Recirculaon mode is for residenal installaons only.

Recirculaon mode cannot be used with the Bath Fill

controller (BC-100V), an air handler, or with mulple

Rinnai water heaters.

The maximum Rinnai temperature seng while in

recirculaon mode is 140°F (60°C).

Pump Requirements

Voltage: 120V, 60 Hz

Amperage: less than 2 amps

NOTE: The Rinnai PC board will be damaged if

amperage exceeds 2 Amps.

In-rush current: Less than 2.5 Amps.

Check valve: An integral ow check (IFC) valve is

required. See plumbing diagram.

Pump Size

The pump should be sized for 2.5 GPM at the pressure

loss through the tankless water heater and the supply

and return plumbing in the recirculaon loop.

For more informaon on sizing the pump refer to the

Rinnai Circ-Logic™ Guide or the secon “Pump Sizing

for Circulaon” in the Rinnai Hot Water System

Design Manual.

Installaon

1. Turn o the electrical power supply by unplugging

the power cord or by turning o the electricity at

the circuit breaker.

2. Install the recirculaon pump on the return line

according to the pump manufacturer installaon

instrucons. Install a check valve in the return

line as shown in the Plumbing Diagram if one is

not integrated into the pump.

3. The wire harness for the recirculaon pump is

bundled with the wire harness from the PC board.

The connector has a black and white wire with the

label “Cut wire to connect to pump”. To connect

to the pump, cut the connector, splice the wires,

and add 4 Amp fuse to the hot wire (black) of the

pump. Connect the ground wire from the pump

to a screw at the base of the water cabinet .

Refer to the Pump Electrical Connecon Diagram.

Follow Electrical Code and pump manufacturers

recommendaons.

4. Adjust the dip switch by moving the 4th switch in

the whie set of switches (SW2) to ON.

For Economy mode, set the 8th switch in the

white set of switches (SW2) to OFF (default).

For Comfort mode, set the 8th switch in the white

set of switches (SW2) to ON.

5. Connect power to the water heater. Press the

Power buon on the controller. The pump and

water heater will turn on to raise the recirculaon

loop temperature.

Sengs for SW2

(bank of white switches)

Switch 4 Switch 8

Economy Mode ON OFF

Comfort Mode ON ON

Plumbing Diagram

NOTE: DO NOT install the Rinnai Scale Control system

within the recirculaon loop.

PUMP

ut wi

onne

o pump

Cut connector

and splice wires.

Pump Electrical Connecon

4 Amp

Fuse

Board

SCALE CONTROL

(RECOMMENDED)

30 VC Series Manual

Recirculaon Mode

Sequence of Operaon

DIP switches (SW2 - white switches, #4, #8) should be

set correctly for recirculaon and mode. The Rinnai

water heater should be turned on.

Pump recirculaon begins when the water heater is

turned on. The Rinnai inlet and outlet thermistors

measure the water temperature.

The water heater produces hot water at the

temperature seng. If the inlet thermistor detects

abnormal temperature then diagnosc code 51 is

generated and the pump will turn o.

When the return water temperature reaches

approximately 15°F (8.3°C) below the temperature

seng, the water heater and pump will turn o.

The cycle will restart at the approximate me interval

in the table based on the temperature thermistor

readings.

Economy Mode

The Economy mode operates as follows:

• Less energy consumed due to fewer pump cycles

• Assumes plumbing is insulated (minimal pipe heat

loss)

• Pump cycles on every 31 to 79 minutes (see

table).

Comfort Mode

The Comfort mode operates as follows:

• Higher energy consumpon due to more pump

cycles

• Assumes plumbing is not insulated resulng in

higher pipe heat loss

• Pump cycles on every 15 to 39 minutes (see

table).

Rinnai

Temperature

Seng

°F

Typical Pump ON Intervals*

Economy

Mode

Comfort

Mode

140 31 15

135 31 15

130 31 15

125 31 15

120 31 15

115 35 18

110 42 21

108 45 22

106 49 24

104 54 27

102 60 30

100 68 34

98 79 39

* The pump will cycle on at these calculated

intervals which are based on the temperature

seng, insulaon, and esmated heat loss in the

system. The values for your installaon may vary.

The oponal MC195T-US controller provides a mer

funcon to control the on/o periods of the recircula-

on pump.

VC Series Manual 31

Direct Vent Tankless Water Heater Operaon Instrucons

Important Facts about your Water Heater

Thank you for purchasing a Rinnai Tankless Water Heater. For proper operaon and safety, it is

important to follow the instrucons and adhere to the safety precauons.

Read all of the instrucons and the warranty thoroughly before operang this water heater. Keep this

manual in a safe place.

NOTICE: Rinnai somemes shares customer contact informaon with businesses that we believe provide

products or services that may be useful to you. By providing this informaon, you agree that we can

share your contact informaon for this purpose. If you prefer not to have your informaon shared with

these businesses, please contact customer service and ask not to have your informaon shared. We

will however, connue to contact you with informaon relevant to the product(s) you registered and/or

you account with us.

— Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any

other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s

instrucons.

• If you cannot reach your gas supplier, call the re department.

— Installaon and service must be performed by a licensed professional.

If the informaon in these instrucons is not followed exactly, a re or

explosion may result causing property damage, personal injury, or death.

WARNING

FOR OUTDOOR APPLICATIONS ONLY

RL75e .................... REU-VC2528WD-US

REU-VC2528FFUD-US(A)

RL94e .................... REU-VC2837WD-US

FOR INDOOR APPLICATIONS ONLY

RL75i ..................... REU-VC2528FFUD-US

REU-VC2528FFUD-US(A)

RLX94i ................... REU-VC2737FFUD-US

RL94i ..................... REU-VC2837FFUD-US

32 VC Series Manual

Consumer Operaon Guidelines for the Safe Operaon of your Water Heater

FOR YOUR SAFETY READ BEFORE OPERATING

A. This appliance does not have a pilot. It is

equipped with an ignion device which

automacally lights the burner. Do not try to light

the burner by hand.

B. BEFORE OPERATING smell all around the appliance

area for gas. Be sure to smell next to the oor

because some gas is heavier than air and will

sele on the oor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any

phone in your building.

• Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s

instrucons.

• If you cannot reach your gas supplier, call the re

department.

C. Use only your hand to push in or turn the gas

control knob. Never use tools. If the knob will not

push in or turn by hand, do not try to repair it, call

a qualied licensed professional. Force or

aempted repair may result in a re or explosion.

D. Do not use this appliance if any part has been

under water. Immediately call a qualied licensed

professional to inspect the appliance and to

replace any part of the control system and any gas

control which has been under water.

TO TURN OFF GAS TO APPLIANCE

1. Turn o all electric power to the appliance using

the ON/OFF buon.

2. Set the thermostat to lowest seng.

3. Locate the manual gas valve on the side of the

heater. Turn the manual valve clockwise to the

full OFF posion.

OPERATING INSTRUCTIONS

1. STOP! Read the safety informaon above.

2. Set the thermostat to lowest seng.

3. Turn o all electric power to the appliance using

the ON/OFF buon.

4. This appliance is equipped with an ignion device

which automacally lights the burner. Do not try

to light the burner by hand.

5. Locate the manual gas valve on the side of the

heater. Turn the manual valve clockwise to the

full OFF posion.

6. Wait ve (5) minutes to clear out any gas. Then

smell for gas, including near the oor. If you smell

gas, STOP! Follow “B” in the safety informaon

above. If you don’t smell gas, go to the next step.

7. Turn the manual gas valve counterclockwise to the

full ON posion.

8. Turn on all electric power to the appliance using

the ON/OFF buon.

9. Set the thermostat to desired seng.

10. Open a hot water tap. If the appliance will not

operate, follow the instrucons “To Turn O Gas

To Appliance” and call your licensed professional

or gas supplier. See manual for addional

informaon.

Manual Valve

OPEN

WARNING

If you do not follow these instrucons exactly, a re or explosion

may result causing property damage, personal injury, or loss of life.

VC Series Manual 33

How to use the Temperature Controller

The MC-91-2 controller is the standard temperature

controller that is supplied with the water heater. On

indoor models it is integrated into the front panel. The

MCC-91-2 controller is for hydronic applicaons requiring

higher temperatures. When the MCC-91-2 controller is

connected, these higher temperatures are available on all

controller models in the system. Refer to the secon on

temperature ranges.

DO NOT repeatedly operate the water heater and then use

a hot water tap while the controller is turned o. Operang

the water heater in this way to alternately produce hot

water may cause water to condense on the outside of

internal parts and accumulate in the water heater cabinet.

Dimensions (inches): 3.5 W x 4.75 H x 0.75 D

Temperature

Display

Priority

Indicator

Priority

Button

ON/OFF

Button

In Use

Indicator

Temperature

Selection

MC-91-2US

• Before operang, smell all around the appliance area

for gas. Be sure to smell next to the oor because

some gas is heavier than air and will sele on the

oor.

• Keep the area around the appliance clear and free

from combusble materials, gasoline, and other

ammable vapors and liquids.

• Always check the water temperature before entering

a shower or bath.

• Do not use this appliance if any part has been under

water. Immediately call a licensed professional to

inspect the appliance and to replace any part of the

control system and any gas control which has been

under water.

• Should overheang occur or the gas supply fail to shut

o, turn o the manual gas control valve to the

appliance.

• Do not adjust the DIP switch unless specically

instructed to do so.

• Do not use an extension cord or an adapter plug with

this appliance.

• Any alteraon to the appliance or its controls can be

dangerous and will void the warranty.

• If you install this water heater in an area that is known

to have hard water or that causes scale build-up the

water must be treated and/or the heat exchanger

ushed regularly. Rinnai provides a “Scale Control

System” that oers superior lime scale prevenon and

corrosion control by feeding a blend of control

compounds into the water supply. Damage and repair

due to corrosive compounds in the air is not covered

by warranty.

• Keep the air intake locaon free of chemicals such as

chlorine or bleach that produce fumes. These fumes

can damage components and reduce the life of your

appliance. Damage and repair due to scale in the heat

exchanger is not covered by warranty.

WARNING

34 VC Series Manual

How to Set the Temperature

While any hot water is being provided,

the temperature seng can only be

adjusted between 98° F and 110° F.

NOTICE

Check local codes for the maximum water

temperature seng allowed when used

in nursing homes, schools, day care

centers, and all other public applicaons.

NOTICE

If a newly installed unit with a controller

has not been powered for at least 6 hours

then the temperature will return to the

default seng of 104° F (40° C) if power is

interrupted.

NOTICE

There may be a variaon between the

temperature displayed on the

temperature controller and the

temperature at the tap due to weather

condions or the length of pipe to the

water heater.

NOTICE

1. If the water heater is o, press

the Power buon to turn on.

2. If the Priority light is o, then

press the “Priority buon” on the

temperature controller. The

green Priority light will glow

indicang that this controller is

controlling the temperature and

that the water heater is ready to

supply hot water. (The priority

can only be changed while no hot

water is running.)

3. Press the up or down buons to

obtain the desired temperature

seng.

All hot water sources are able to

provide water at this temperature

seng unl it is changed again at

this or another temperature

controller.

DANGER

Water temperatures over 125° F (52° C) can cause severe burns or scalding

resulng in death.

Hot water can cause rst degree burns with exposure for as lile as:

3 seconds at 140° F (60° C)

20 seconds at 130° F (54° C)

8 minutes at 120° F (49° C)

Children, disabled, or elderly are at highest risk of being scalded.

Feel water before bathing or showering.

This water heater requires a minimum ow rate to operate. This rate can be found on the specicaon page in

this manual. In some cases when you are not geng hot water or if the water alternates between hot and cold,

it is due to the water ow being below or close to the minimum ow rate. Increasing the ow rate should

resolve these problems in these cases.

If you are experiencing issues with higher temperature sengs, then reduce the temperature seng. Selecng a

temperature closer to that which is actually used at the faucet will increase the amount of hot water being

delivered to the faucet, due to less cold water mixing at the xture.

VC Series Manual 35

Temperatures Available with a Controller

The water heater can deliver water at only one temperature seng at a me. The available temperatures are

provided below. A temperature lower than 98° F (37° C) can be obtained at the tap by mixing with cold water.

To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the “On/O” buon

for 5 seconds while the water heater is OFF.

These temperatures are suggesons only:

* Temperature sengs from 125-140 °F (52-60 °C) are available by seng switch 6 to ON in the SW1 Dip

switch (tan switches). These models have a default maximum temperature of 120° F (49° C) and an opon

(switch 6) to increase the maximum temperature to 140 °F (60 °C).

DO NOT adjust the other switches unless specically instructed to do so.

WARNING

• Kitchen 120 °F (49° C)

• Shower 98 - 110 °F (37 - 43 °C)

• Bath Fill 102 - 110 °F (39 - 43 °C)

Temperature Sengs Available (Fahrenheit °F)

RL75i, RL75e

98 100 102 104 106 108 110 115 120

125

130

135

140

150

160

RL94i, RLX94i,

RL94e

185**

Celsius °C 37 38 39 40 41 42 43 46 49 52 54 57 60 66 71 85

** These sengs require the MCC-91-2 controller. When the MCC-91-2 controller is connected, these higher

temperatures are available on all controller models in the system. Use of an MCC-91-2 controller in a

residenal dwelling will reduce the warranty coverage to that of a commercial warranty applicaon.

Alternate Temperature Sengs

A dierent range of temperature sengs is available by seng switches 2 and 3 of the SW2 dip switch (white

switches) to ON. The table below shows the sengs available with the MC-91-2 and MCC-91-2 controller.

Alternate Temperature Sengs Available (Fahrenheit °F)

RL75i, RL75e

110 115 120 125 130 135 140 145 150 155 160

RL94i, RLX94i, RL94e

165 170 175 180 185

Celsius °C 43 46 49 52 54 57 60 63 66 68 71 74 77 79 82 85

MC-91-2

MCC-91-2

MC‐91‐1, MCC‐91‐1, MC‐100V‐1, and BC‐100V‐1 controllers are not compable with

Alternate Temperature Sengs. Alternate Temperature Sengs are for commercial

applicaons only.

DO NOT use the MC‐91‐1, MCC‐91‐1, MC‐100V‐1, or BC‐100V‐1 controllers when dip

switches 2 and 3 (white switches) are in the ON posion.

WARNING

36 VC Series Manual

Temperature Opons Without a Temperature Controller

The default temperature seng for this appliance installed without a temperature controller is 120° F (49° C). If

desired, the temperature seng can be changed to 140° F (60° C) by adjustment of a switch.

In the SW1 Dip switch (tan switches), set switch 5 to ON to obtain 140° F water temperature seng. Set switch

5 to OFF (default) to obtain 120° F water temperature seng. If a temperature controller is installed, then

switch 5 has no eect on temperature sengs.

Seng Controller to Mute

On the MC-91-2 to eliminate the beeps when keys are pressed or to turn the beeps back on, press and hold both

the up and down buons unl a beep is heard (approximately 5 seconds).

Locking the Controller

The MC-91-2 controller can be locked by pressing the Priority buon and the up buon together for 5 seconds.

A beep will sound conrming that the controller is locked. The display will alternately show “LOC”, the

temperature seng, and a diagnosc code if one has been acvated. All of the controllers in the system are

also locked.

To unlock the controller press the Priority buon and the up buon together for 5 seconds.

To Display Diagnosc Informaon

To display the most recent diagnosc informaon codes press and hold the “On/O” buon for 2 seconds on

the MC-91-2 controller. While holding the “On/O” buon press the up buon. The last 9 diagnosc codes will

ash one aer the other. To exit this mode press the “On/O” and up buon as before.

To enter or exit the maintenance monitor informaon mode press and hold the down buon for 2 seconds and

without releasing it press the ON/OFF buon.

To obtain the water ow rate press the up or down buons unl “01” displays. The water ow rate will then

appear. For example “58” means 5.8 gal/min.

To obtain the outgoing water temperature press the up or down buons unl “02” displays. The temperature

will appear in degrees Fahrenheit.

Diagnosc Codes

This water heater is designed to display diagnosc codes. If there is a potenal operaon concern refer to the

code and remedy on the next page.

Data Unit No.

Water ow rate 0.1 gal/min 01

Outgoing water temperature Degrees Fahrenheit 02

VC Series Manual 37

Diagnosc Codes and Remedies

Code Denion Remedy

Power interrupon during Bath

Fill (Water will not ow when

power returns).

Turn o all hot water taps. Press ON/OFF twice.

10 Air Supply or Exhaust Blockage

Check that nothing is blocking the ue inlet or exhaust.

Check all vent components for proper connecons.

licensed

professional

only

Ensure approved venng materials are being used.

Ensure vent length is within limits.

Verify dip switches are set properly.

Check fan for blockage.

11 No Ignion

(heater not turning on)

Check that the gas is turned on at the water heater, gas meter, or cylinder.

If the system is propane, make sure that gas is in the tank.

Ensure appliance is properly grounded.

licensed

professional

only

Ensure gas type and pressure is correct.

Ensure gas line, meter, and/or regulator is sized properly.

Bleed all air from gas lines.

Verify dip switches are set properly.

Ensure igniter is operaonal.

Check igniter wiring harness for damage.

Check gas solenoid valves for open or short circuits.

Remove burner cover and ensure all burners are properly seated.

Remove burner plate and inspect burner surface for condensaon or debris.

Check the ground wire for the PC board.

12 No Flame

Check that the gas is turned on at the water heater, gas meter, or cylinder.

Check for obstrucons in the ue outlet.

If the system is propane, make sure that gas is in the tank.

licensed

professional

only

Ensure gas line, meter, and/or regulator is sized properly.

Ensure gas type and pressure is correct.

Bleed all air from gas lines.

Ensure proper venng material was installed.

Ensure condensaon collar was installed properly.

Ensure vent length is within limits.

Verify dip switches are set properly.

Check power supply for loose connecons.

Check power supply for proper voltage and voltage drops.

Ensure ame rod wire is connected.

Check ame rod for carbon build-up.

Disconnect and reconnect all wiring harnesses on unit and PC board.

Check for DC shorts at components.

Check gas solenoid valves for open or short circuits.

Remove burner plate and inspect burner surface for condensaon or debris.

Thermal Fuse has acvated

Check for restricons in air ow around unit and vent terminal.

licensed

professional

only

Ensure dip switch 5 in the second bank of dip switches (white) is in the o posion.

Check gas type of unit and ensure it matches gas type being used.

Check for low water ow in a circulang system causing short-cycling.

Ensure dip switches are set to the proper posion.

Check for foreign materials in combuson chamber and/or exhaust piping.

Check heat exchanger for cracks and/or separaons.

Check heat exchanger surface for hot spots which indicate blockage due to scale

build-up. Refer to instrucons in manual for ushing heat exchanger. Hard water

must be treated to prevent scale build up or damage to the heat exchanger.

Measure resistance of safety circuit.

Ensure high re and low re manifold pressure is correct.

Check for improper conversion of product.

Over Temperature Warning

(safety shutdown because unit is

too hot)

Check for restricons in air ow around unit and vent terminal.

licensed

professional

only

Check for low water ow in a circulang system causing short-cycling.

Check for foreign materials in combuson chamber and/or exhaust piping.

Check for blockage in the heat exchanger.

Some of the checks below should be done by a licensed professional. Consumers

should never aempt any acon that they are not qualied to perform.

WARNING

38 VC Series Manual

Code Denion Remedy

19 Electrical Grounding

licensed

professional

only

Check all components for electrical short.

Outgoing Water

Temperature Sensor

Check sensor wiring for damage.

Measure resistance of sensor.

Clean sensor of scale build-up.

Replace sensor.

Heat Exchanger Outgoing

Temperature Sensor

Combuson Air

Temperature Sensor

Check for restricons in air ow around unit and vent terminal.

Check sensor wiring for damage.

Measure resistance of sensor.

Clean sensor of scale build-up.

Ensure fan blade is ght on motor sha and is in good condion.

Replace sensor.

Outside temperature

thermistor (outdoor

models only)

Check sensor wiring for damage.

Measure resistance of sensor.

Clean sensor of scale build-up.

Replace sensor.

Inlet water temperature

thermistor

Modulang Solenoid Valve

Signal

Check modulang gas solenoid valve wiring harness for loose or damaged terminals.

Measure resistance of valve coil.

61 Combuson Fan

Ensure fan will turn freely.

Check wiring harness to motor for damaged and/or loose connecons.

Measure resistance of motor winding.

65 Water Flow Control

The water ow control valve has failed to close during the bath ll funcon. Immediately turn

o the water and disconnue the bath ll funcon. Contact a licensed professional to service

the appliance.

70 PC Board

Check PC board DIP switches for correct posion.

Check the connecon harness at the connecon on the PC board.

Replace PC board.

71 Solenoid Valve Circuit

Replace the PC Board.

72 Flame Sensing Device Replace PC Board

79 Water Leak Detected

Water has been detected at the boom of the unit. Turn o water supply. Check all plumbing

internally for leakage.

LC #

(LC0,

LC1,

LC2,…)

Scale Build-up in Heat

Exchanger (when checking

maintenance code history,

“00” is substuted for

“LC”)

LC0~LC9 indicates that there is scale build up in the heat exchanger and that the heat

exchanger needs to be ushed to prevent damage. Refer to the ushing instrucons in the

manual. Hard water must be treated to prevent scale build up or damage to the heat

exchanger.

To operate the water heater temporarily unl the heat exchanger can be ushed, push the On/

O buon on the temperature controller 5 mes. Repeated LC codes will eventually lockout

the water heater.

Please call Rinnai technical department.

Maintenance has been

performed

Indicates a licensed professional performed maintenance or corrected an issue.

code

Nothing happens when

water ow is acvated.

Clean inlet water supply lter.

On new installaons ensure hot and cold water lines are not reversed.

Verify you have at least the minimum ow rate required to re unit.

licensed

professional

only

Check for cold to hot cross over. Isolate circulang system if present. Turn o cold water to the

unit, open pressure relief valve; if water connues to ow, there is bleed over in your plumbing.

Verify turbine spins freely.

Measure the resistance of the water ow control sensor.

If the display is blank and clicking is coming from the unit, disconnect the water ow servo

motor (GY, BR, O, W, P, BL, R). If the display comes on then replace the water ow servo

motor.

VC Series Manual 39

The appliance must be inspected annually by a

licensed professional. Repairs and maintenance

should be performed by a licensed professional. The

licensed professional must verify proper operaon

aer servicing.

Cleaning

It is imperave that control compartments, burners,

and circulang air passageways of the appliance be

kept clean.

Clean as follows:

1. Turn o and disconnect electrical power. Allow to

cool.

2. Close the water shut o valves. Remove and clean

the water inlet lter.

3. Remove the front panel by removing 4 screws.

4. Use pressurized air to remove dust from the main

burner, heat exchanger, and fan blades. Do not

use a wet cloth or spray cleaners on the burner.

Do not use volale substances such as benzene

and thinners. They may ignite or fade the paint.

5. Use so dry cloth to wipe cabinet.

Vent System

The vent system and condensate collector (located at

top of unit) should be inspected at least annually for

blockages or damage. If the vent and/or condensate

collector is blocked contact a licensed professional.

Motors

Motors are permanently lubricated and do not need

periodic lubricaon. However you must keep fan and

motor free of dust and dirt by cleaning annually.

Temperature Controller

Use a so damp cloth to clean the temperature

controller. Do not use solvents.

Lime / Scale Build-up

If you receive diagnosc code “LC#” (LC1, LC2,…),

refer to the procedure, Flushing the Heat Exchanger.

Refer to the secon on Water Quality to see if your

water needs to be treated or condioned. (When

checking maintenance code history, “00” is

substuted for “LC#”.)

The water must be potable, free of corrosive

chemicals, sand, dirt, or other contaminates. It is up

to the installer to ensure the water does not contain

corrosive chemicals, or elements that can aect or

damage the heat exchanger. Water that contains

chemicals exceeding the levels below aect and

damage the heat exchanger. Replacement of the

heat exchanger due to water quality damage is not

covered by the warranty.

Snow Accumulaon

Keep the area around ue terminal free of snow and

ice. The appliance will not funcon properly if the

intake air or exhaust is impeded (blocked or parally

blocked) by obstrucons.

Coastal Installaons

Installaons located in or near coastal areas may

require addional maintenance due to corrosive

airborne ocean salt.

Clean the water lter

Clean the inlet water lter by closing the cold and hot

water inlet isolaon (shut-o) valves. Put a bucket

under the lter at the boom of the water heater to

Required Maintenance

To protect yourself from harm, before performing maintenance:

• Turn o the electrical power supply by unplugging the power cord or by turning o the electricity at the

circuit breaker. (The temperature controller does not control the electrical power.)

• Turn o the gas at the manual gas valve, usually located immediately below the water heater.

• Turn o the incoming water supply. This can be done at the isolaon valve immediately below the water

heater or by turning o the water supply to the building.

WARNING

Keep the appliance area clear and free from combusble materials, gasoline, and other

ammable vapors and liquids.

WARNING

The appliance and vent system must be inspected annually by a licensed professional. Repairs and maintenance

should be performed by a licensed professional. The licensed professional must verify proper operaon aer servicing.

The following maintenance items are required for the proper operaon of your water heater.

40 VC Series Manual

catch any water that is contained inside the unit.

Unscrew the water lter. Rinse the lter to remove

any debris. Install the lter and open the isolaon

valves.

Pressure Relief Valve:

Operate the valve manually once a year. In doing so,

it will be necessary to take precauons with regard to

the discharge of potenally scalding hot water under

pressure. Ensure discharge water has a safe place to

ow. Contact with your body or other property may

cause damage or harm.

Visual Inspecon of Flame

Verify proper operaon aer servicing. The burner

must ame evenly over the enre surface when

operang correctly. The ame must burn with a clear,

blue, stable ame. See the parts breakdown of the

burner for the locaon of the view ports. The ame

paern should be as shown in the gures below.

Freeze Protecon

Make sure in case of freezing weather that the water

heater and its water lines are adequately protected to

prevent freezing. Damage due to freezing is not

covered by the warranty. Refer to the secon on

Freeze Protecon. The unit may be drained manually.

However, it is highly recommended that:

• drain down solenoid valves be purchased and

installed that will automacally drain the unit if

power is lost. These are available in a kit,

104000059. (The condensate trap is not aected

by the auto drain down solenoid valves and will

have to be manually drained.)

• a surge protector with terminals be purchased

and installed which allows the solenoid valves to

operate if the unit is disabled due to a diagnosc

code. This is available as 104000057.

Winterizing

These recommendaons are intended to suggest

pracces that are eecve for winterizing the water

heater. They should be used as a guide only. No

liability is assumed for any issues resulng from the

use of this informaon.

GAS

Shut o the gas to the water heater. It is generally

preferable to shut o the gas service to the enre

locaon if gas is not going to be used.

WATER

Shut o the cold water supply to the water heater. It

is generally preferable to shut o the water to the

enre locaon if water is not going to be used.

Drain the water heater by opening the drain valves on

the cold water line and hot water line.

Open several hot water taps and remove the lter

assembly at the water inlet in order to allow room for

expansion in case there is water in the lines that

freeze. Compressed air may be used to purge any

water le in the system.

ELECTRIC

Disconnect the power supply by either unplugging the

electrical cord or by turning o the circuit breaker to

the water heater to prevent potenal damage from

irregular power surges or interrupons.

VENT TERMINATION

Place a cover over the vent terminaon (intake and

exhaust) if it can be safely accessed. The cover should

be easy to apply and remove. This will prevent

debris, leaves, and small animals from entering the

venng and water heater which could cause air ow

issues upon return to service.

Tesng the pressure relief valve should only be

performed by a licensed professional. Water

discharged from the pressure relief valve could cause

severe burns instantly or death from scalds.

WARNING

VC Series Manual 41

Water Heater

Pressure Relief Valve

3/4" Ball Valve

3/4" Union

Check Valve

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

KEY

Circulating Pump

Rinnai

An LC0~LC9 or “00” diagnosc code indicates the unit is beginning to lime up and must be ushed. Failure to

ush the appliance will cause damage to the heat exchanger. Damage caused by lime build-up is not covered by

the unit’s warranty. Rinnai strongly recommends installaon of isolaon valves to allow for ushing of the heat

exchanger.

1. Disconnect electrical power to the water heater.

2. Close the shuto valves on both the hot water and

cold water lines (V3 and V4).

3. Connect pump outlet hose (H1) to the cold water

line at service valve (V2).

4. Connect drain hose (H3) to service valve (V1).

5. Pour 4 gallons of undiluted virgin, food grade, white

vinegar into pail.

6. Place the drain hose (H3) and the hose (H2) to the

pump inlet into the cleaning soluon.

7. Open both service valves (V1 and V2) on the hot

water and cold water lines.

8. Operate the pump and allow the vinegar to circulate

through the water heater for at least 1 hour at a rate

of 4 gallons per minute (15.1 liters per minute).

9. Turn o the pump.

10. Rinse the vinegar from the water heater as follows:

a. Remove the free end of the drain hose (H3) from

the pail. Place in sink or outside to drain.

b. Close service valve, (V2), and open shuto valve,

(V4). Do not open shuto valve, (V3).

c. Allow water to ow through the water heater for

5 minutes.

d. Close shuto valve (V4). When unit has nished

draining remove the in-line lter at the cold water

inlet and clean out any residue. Place lter back

into unit and open valve (V4).

e. Close service valve, (V1), and open shuto valve,

(V3).

Flushing the heat exchanger

11. Disconnect all hoses.

12. Restore electrical power to the

water heater.

Following ush procedure call

technical assistance (1-800-621-

9419) for PCB reset informaon.

42 VC Series Manual

If the water heater is not going to be used during a period of possible freezing weather, it is recommended that

the water inside the water heater be drained.

To manually drain the water:

1. Shut o cold water supply and gas supply.

2. Turn o the temperature controller.

3. Disconnect the power to the water heater.

4. Place a container to catch the water. Remove the drain caps on

both isolaon valves and open both valves above the caps (blue

and red valve handles). -OR- Open hot water drain plug at the hot

water outlet.

5. Remove water lter to drain the cold water. Compressed air may

be used to purge any water le in the system.

Manual Draining of the Water Heater

To resume normal operaon:

1. Conrm that all water drain plugs are removed, that the gas supply

is turned o, and that all taps are closed.

2. Screw in the water lter in the cold water inlet.

3. Replace the drain caps and close both isolaon valves. -OR- Screw

in the hot water drain plug.

4. Open the cold water supply.

5. Open a tap and conrm that water ows, and then close.

6. Turn on the power.

7. Aer conrming that the temperature controller is o, turn on the

gas supply.

8. Turn on the temperature controller.

Running a low volume of water through the water heater to prevent freezing

If the temperature exceeds the ability of the water heater to freeze protect

itself, or if power is lost, the following steps may prevent the water heater

and external piping from freezing. (Units connected with EZ Connect (2

unit link) should be drained to prevent freezing if not in use.)

1. Turn the water heater o.

2. Close the gas supply valve.

3. Turn on a hot water tap to ow water about 0.1 gal/min or where the

stream is about 0.2 inches thick.

When the water heater or external piping has frozen

1. Do not operate the water heater if it or the external piping is frozen.

2. Close the gas and water valves and turn o the power.

3. Wait unl the water thaws. Check by opening the water supply valve.

4. Check the water heater and the piping for leaks.

HOT

COLD

ON!

0.1 gal/min or about

0.2 inch thick

* Use a wrench or other tool

to unscrew the hot water

drain plug.

To avoid burns, wait unl the equipment cools down before draining the water. The

water in the appliance will remain hot aer it is turned o.

WARNING

Water

lter

Hot water

outlet

Hot water

drain plug *

Cold water

inlet

VC Series Manual 43

NOTICE BEFORE INSTALLATION This direct-vent appliance must be installed by a licensed professional. If you are not

properly trained, you must not install this unit.

IMPORTANT: In the State of Massachuses (248 CMR 4.00 & 5.00)

For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in

whole or in part for residenal purposes, including those owned or operated by the Commonwealth and where the side wall

exhaust vent terminaon is less than seven (7) feet above nished grade in the area of the venng, including but not limited

to decks and porches, the following requirements shall be sased:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the me of installaon of the side wall horizontal vented gas

fueled equipment, the installing plumber or gaser shall observe that a hard wired carbon monoxide detector with an

alarm and baery back-up is installed on the oor level where the gas equipment is to be installed. In addion, the

installing plumber or gaser shall observe that a baery operated or hard wired carbon monoxide detector with an

alarm is installed on each addional level of the dwelling, building or structure served by the side wall horizontal vented

gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualied licensed

professionals for the installaon of hard wired carbon monoxide detectors

a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an ac, the

hard wired carbon monoxide detector with alarm and baery back-up may be installed on the next adjacent oor

level.

b. In the event that the requirements of this subdivision can not be met at the me of compleon of installaon, the

owner shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during

said thirty (30) day period, a baery operated carbon monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above

provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS cered.

3. SIGNAGE. A metal or plasc idencaon plate shall be permanently mounted to the exterior of the building at a

minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented

gas fueled heang appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, "GAS

VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".

4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not

approve the installaon unless, upon inspecon, the inspector observes carbon monoxide detectors and signage

installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.

State Regulaons

44 VC Series Manual

Replacement Parts

Tech Sheet

Item No.

Gas Control Assembly 100

Electrode / Flame Rod Kit 116, 117

Fan Assembly / Motor 125

Heat Exchanger 143

Water Flow Servo & Sensor 401

Bypass-Servo Assembly 403

Water Filter Assy 412

PC Board 700

Ignitor 706

Thermal Fuse Harness 725

Ignitor

Thermal Fuse Harness

Bypass-Servo Assembly

Water Filter Assy

PC Board

Water Flow Servo &

Sensor

Fan Assembly / Motor

Heat Exchanger

Gas Control Assembly

Electrode / Flame Rod

The Technical Sheet that is located inside the front

cover of the water heater contains a complete

illustrated parts list.

VC Series Manual 45

Limited Warranty for Luxury Series RL75, RL94, RLX94i

What is covered?

The Rinnai Standard Limited Warranty covers any defects in materials or workmanship when the product is

installed and operated according to Rinnai wrien installaon instrucons, subject to the terms within this

Limited Warranty document. This Limited Warranty applies only to products that are installed correctly in the

United States and Canada. Improper installaon may void this Limited Warranty. It is recommended that a

trained and qualied professional who has aended a Rinnai installaon training class complete your

installaon. This Limited

Warranty coverage, as set out in the table below, extends to the original purchaser and

subsequent owners, but only while the product remains at the site of the original installaon, and terminates if

the product is moved or reinstalled at a new locaon.

Item

Period of Coverage (from date of purchase)

If used for both residenal water heang

and space heang purposes

Commercial

Applicaons

Residenal

Applicaons

Heat Exchanger 12 years

[1] [2]

10 years

[1] [2]

5 years

[1]

All Other Parts and

Components

5 years

[1]

5 years

[1]

5 years

[1]

Reasonable Labor 1 year

[3]

1 year

[3]

1 year

[3]

[1] Period of coverage is reduced to 3 years from date of purchase when used as a circulang water heater within a hot water

circulaon loop, where the water heater is in series with a circulaon system and all circulang water ows through the water

heater, and where an on-demand recirculaon system is not incorporated.

On-demand recirculaon is dened as a hot water recirculang loop or system that ulizes exisng hot and cold lines or a dedicated

return line, and only acvates when hot water is used. It can be acvated by a push buon, moon sensor, or voice acvaon but

not by a temperature sensor. A mer added to a standard recirculang pump is not considered as on-demand.

[2] Period of coverage is reduced to 5 years from date of purchase if the Rinnai Tankless Water Heater temperature seng exceeds

160°F (71°C).

[3] Labor coverage is extended to 5 years in residenal applicaons and 2 years in commercial applicaons if the product is registered

within 30 days (except registraon is not required in California and Quebec) and/or if the other condions above in the Residenal

Applicaons and Commercial Applicaons secons are sased.

Note: The integrated controller on indoor models has a 1 year warranty on parts.

What Will Rinnai Do?

Rinnai will repair or replace the covered product or any part or component that is defecve in materials or

workmanship as set forth in the above table. Rinnai will pay reasonable labor charges associated with the repair

or replacement of any such part or component during the term of the labor warranty period. All repair parts

must be genuine Rinnai parts. All repairs or replacements must be performed by a qualied professional who is

properly trained to do the type of repair.

Replacement of the product may only be authorized by Rinnai at its sole discreon. Rinnai does not authorize

any person or company to assume for it any obligaon or liability in connecon with the replacement of the

product. If Rinnai determines that repair of a product is not possible, Rinnai may replace the product with a

comparable product at Rinnai’s sole discreon. The warranty claim for product parts and labor may be denied if

a component or product returned to Rinnai is found to be free of defects in material or workmanship; damaged

by improper installaon, use or operaon; or damaged during return shipping.

How to Obtain Service

For the name of a trained and qualied professional

please contact your place of purchase, visit the Rinnai

website (www.rinnai.us), call Rinnai at 1-800-621-9419 or write to Rinnai at 103 Internaonal Drive, Peachtree

City, Georgia 30269.

46 VC Series Manual

Proof of purchase is required to obtain warranty service. You may show proof of purchase with a dated sales

receipt, or by registering within 30 days of purchasing the product. To register your Rinnai Tankless Water

Heater, please visit www.rinnai.us. For those without internet access, please call 1-800-621-9419. Receipt of

registraon by Rinnai will constute proof-of-purchase for this product. Registraon of product installed in new

home construcon may be veried with a copy of the closing papers provided by the inial home buyer.

However, registraon is not necessary in order to validate this Limited

Warranty.

What is Not Covered?

This Limited Warranty does not cover any failures or operang dicules due to the following:

• Accident, abuse, or misuse

• Alteraon of the product or any component

part

• Misapplicaon of this product

• Improper installaon (such as but not limited

to)

− Product being installed in a corrosive envi-

ronment

− Condensate damage

− Improper venng

− Incorrect gas type

− Incorrect gas or water pressure

− Absence of a drain pan under the appliance

• Water quality

• Improper maintenance (such as but not limited

to scale build-up, freeze damage, or vent

blockage)

• Incorrect sizing

• Any other cause not due to defects in materials

or workmanship

• Problems or damage due to res, ooding,

electrical surges, freezing or any acts of God.

• Force majeure

There is no warranty coverage on product installed in a closed loop applicaon, commonly associated with space

heang only applicaons.

Use of an MCC-91-2 controller in a residenal dwelling will reduce the warranty coverage to that of a

commercial warranty applicaon except when an MCC-91-2 is used with a hydronic air handler for temperatures

no higher than 160°F (71°C).

This Limited Warranty does not apply to any product whose serial number or manufacture date has been

defaced.

This Limited Warranty does not cover any product used in an applicaon that uses chemically treated water such

as a pool or spa heater.

Limitaon on Warranes

No one is authorized to make any other warranes on behalf of Rinnai America Corporaon. Except as expressly

provided herein, there are no other warranes, expressed or implied, including, but not limited to warranes of

merchantability or tness for a parcular purpose, which extend beyond the descripon of the warranty herein.

Any implied warranes of merchantability and tness arising under state law are limited in duraon to the

period of coverage provided by this Limited Warranty, unless the period provided by state law is less. Some

states do not allow limitaons on how long an implied Limited

Warranty lasts, so the above limitaon may not

apply to you.

Rinnai shall not be liable for indirect, incidental, special, consequenal or other similar damages that may arise,

including lost prots, damage to person or property, loss of use, inconvenience, or liability arising from improper

installaon, service or use. Some states do not allow the exclusion or limitaon of incidental or consequenal

damages, so the above limitaon may not apply to you.

This Limited Warranty gives you specic legal rights, and you may also have other rights which vary from state to

state.

www.rinnai.us/warranty

VC Series Manual 47

EXTEND THE LABOR COVERAGE UNDER YOUR LIMITED WARRANTY*

Luxury Series RL75, RL94, RLX94i

REGISTRATION REQUIRED*

Rinnai is providing the opportunity to extend your Rinnai Standard Limited Warranty on labor only on Luxury Series

models RL75, RL94, and RLX94i if you register within 30 days of purchase of your unit. Products not registered will sll be cov-

ered under the Rinnai standard product limited warranty as provided in the Installaon and Operaon manual which comes

with this product. Warranty informaon is also available on Rinnai's web site at www.rinnai.us.

RESIDENTIAL APPLICATIONS:

The limited warranty period on the labor coverage for models RL75, RL94, and RLX94i Tankless Water Heaters installed

in a residenal applicaon is extended for an addional 48 months (a total of 60 months labor coverage from date of

purchase), when used in a residenal hot water applicaon, if the product is registered within 30 days of purchase at

www.rinnai.us/product-registraon or by calling 1-866-RINNAI-1 (746-6241), except registraon is not required in California

and Quebec.

ADDITIONAL CONDITIONS OF EXTENDING THE LABOR COVERAGE UNDER THE LIMITED WARRANTY:

1. The labor coverage does NOT extend if the RL75, RL94, and RLX94i Tankless Water Heater is used for structure heang or

in a closed loop applicaon.

2. If the product is installed on a circulaon system, the circulaon system must be controlled by an on-demand system, or

the limited warranty will not be extended.

COMMERCIAL APPLICATIONS:

The limited warranty period on the labor coverage for models RL75, RL94, and RLX94i Tankless Water

Heaters installed in a commercial applicaon is extended for an addional 12 months (a total of 24 months labor

coverage from date of purchase), when used in a commercial hot water applicaon, if the product is registered

within 30 days of purchase at www.rinnai.us/product-registraon

or by calling 1-866-RINNAI-1 (746-6241),

except registraon is not required

in California and Quebec.

ADDITIONAL CONDITIONS OF EXTENDING THE LABOR COVERAGE UNDER THE LIMITED WARRANTY:

1. The labor coverage does NOT extend if the RL75, RL94, and RLX94i Tankless Water Heater is used for structure heang or

in a closed loop applicaon.

2. If the product is installed on a circulaon system, the circulaon system must be controlled by an on-demand system, or

the limited warranty will not be extended.

* Only applicable if product is registered within 30 days of purchase and the other condions are met. Note

to California and Quebec Residents, and residents of other jurisdicons that prohibit warranty benets

condioned on registraon, registraon is not required to obtain longer warranty periods and failure to

— N’entreposez pas ou n’ulisez pas d’essence ou d’autres vapeurs ou liquides inammables à proximité de

cet appareil ou de n’importe quel autre.

— QUE FAIRE SI VOUS SENTEZ LE GAZ

• N’essayez pas d’allumer un appareil.

• Ne touchez à aucun interrupteur électrique. N’ulisez aucun téléphone dans votre bâment.

• Appelez immédiatement votre fournisseur de gaz depuis un téléphone du voisinage. Suivez les

instrucons qu’il vous donnera.

• Si vous ne pouvez pas joindre votre fournisseur de gaz, appelez les pompiers.

— Installaon et intervenons de service doivent être eectuées par un professionnel agréé.

AVERTISSEMENT

LISEZ SOIGNEUSEMENT TOUTES CES INSTRUCTIONS AVANT D’INSTALLER OU D’UTILISER CE CHAUFFE-EAU.

Ce manuel fournit des informaons sur l’installaon, l’ulisaon et l’entreen du chaue-eau. Pour un bon

fonconnement et la sécurité, il est important de suivre ces instrucons et de respecter les précauons de sécurité.

Un professionnel agréé doit installer le chaue-eau en suivant exactement les instrucons des pages 4-30.

Le consommateur doit lire le manuel en ener pour faire fonconner correctement le chaue-eau et accomplir son

entreen régulier.

ANS Z21.10.3 ● CSA 4.3

POUR DES APPLICATIONS EN INTÉRIEUR UNIQUEMENT

RL75i ..................... REU-VC2528FFUD-US

REU-VC2528FFUD-US(A)

RLX94i ................... REU-VC2737FFUD-US

RL94i ..................... REU-VC2837FFUD-US

POUR DES APPLICATIONS EN EXTÉRIEUR UNIQUEMENT

RL75e .................... REU-VC2528WD-US

REU-VC2528FFUD-US(A)

RL94e .................... REU-VC2837WD-US

Chaue-eau sans réservoir à

venlaon directe Manuel

d’installaon et d’ulisaon

Le manuel complet doit être laissé pour le client. Le consommateur doit lire ce

manuel et s’y référer pour opmiser l’ulisaon et l’entreen du chaue-eau.

Si les informaons de ces instrucons ne sont pas suivies exactement, il peut en ré-

sulter un départ d’incendie ou une explosion, causant des dégâts matériels et des

blessures pouvant être mortelles.

SANITATION

Low Lead Content

NSF/ANSI 372

C US

Manuel de Série VC 49

Table des maères

Ceci est un symbole d’alerte. Il vous prévient de dangers potenels qui pourraient causer blessures ou

mort pour vous et les autres.

Indique une situaon dangereuse imminente qui, si elle n’est pas évitée, pourrait

entraîner une blessure grave voire mortelle.

Indique une situaon dangereuse potenelle qui si elle n’est pas évitée pourrait

entraîner une blessure grave voire mortelle.

Indique une situaon dangereuse potenelle qui, si elle n’est pas évitée, pourrait

entraîner une blessure de gravité faible à moyenne. Ce symbole peut aussi

s’uliser pour vous mere en garde contre des praques dangereuses.

DANGER

ATTENTION

Table des maères .................................................. ....... 49

Atudes et praques de sécurité pour le

consommateur et l’installateur ..................................... 50

Instrucons d’installaon

(pour professionnel agréé) ......................................... 51

Préparaon pour l’installaon ................................ 52

Déterminaon de l’emplacement

de l’installaon ....................................................... 53

Protecon contre le gel ........................................... 58

Liste de contrôle pour choisir l’emplacement

de l’installaon ....................................................... 59

Montage mural ....................................................... 59

Dépose du panneau frontal .................................... 59

Installaon de venlaon

(modèles d’intérieur uniquement) ......................... 60

Condensats (modèles d’intérieur uniquement) ...... 62

Liste de contrôle pour venlaon et condensats

(modèles d’intérieur uniquement) ......................... 62

Installaon de la plomberie .................................... 63

Liste de contrôle pour la plomberie ........................ 66

Installaon de l’alimentaon en gaz ....................... 66

Raccordement de l’électricité ................................. 68

Réglage pour forte altude ..................................... 68

Réglage pour longueur de venlaon

(modèles d’intérieur uniquement) ......................... 68

Liste de contrôle pour gaz et électricité ................. 68

Installaon de contrôleur de température ............ 69

Liste de contrôle nal ............................................. 71

Données techniques ...................................................... 72

Spécicaons ......................................................... 72

Dimensions ............................................................. 73

Courbes de chute de pression et de ux d’eau ...... 74

Diagramme en escalier ........................................... 75

Mode recirculaon .................................................. 76

Instrucons d’ulisaon ............................................. 78

Consignes à l’opérateur pour un fonconnement

sûr de son chaue-eau ........................................... 79

Mode d’emploi du contrôleur de température ...... 80

Fixaon de la température ..................................... 81

Codes de diagnosc ................................................ 83

Entreen nécessaire ................................................ 86

Protecon contre le gel et préparaon

pour l’hiver ...................................................... 87

Rinçage de l’échangeur thermique ................. 88

Vidange manuelle du chaue-eau .................. 89

Pièces de rechange ........................................................ 90

Garane du consommateur .......................................... 91

Importantes informaons de sécurité

Dénions de sécurité

AVIS : Rinnai partage parfois des informaons de contact de clients avec des entreprises qu’il esme pouvoir fournir

des produits ou services qui peuvent vous être ules. En communicant ces informaons, vous donnez votre

accord pour que nous vous communiquions vos informaons de contact dans ce but. Si vous préférez que vos

informaons ne soient pas partagées avec ces entreprises, veuillez contacter notre service à la clientèle et

demander à ce que cela ne se fasse pas pour vous. Nous connuerons cependant dans ce cas à vous contacter

nous-mêmes avec des informaons relaves au(x) produit(s) que vous avez enregistré(s) et/ou sur votre

compte chez nous.

Si vous avez des quesons, ou pensez que ce manuel est incomplet, contactez Rinnai au 1‐800-621-9419.

AVERTISSEMENT

50 Manuel de Série VC

ATTENTION

• RISQUE DE BRÛLURES. Des sores très chaudes

d’échappement et venlaon peuvent causer de

sérieuses brûlures. Restez à l’écart du chaue-eau en

fonconnement. Maintenez les pets enfants et les

animaux à distance de l’appareil.

• Les tuyaux de sore d’eau chaude quiant l’appareil

peuvent être chauds au toucher. Dans des applica-

ons résidenelles, il faut appliquer une isolaon des

tuyaux d’eau chaude en-dessous de 36" (91 cm) du

fait d’un risque de brûlure des pets enfants.

Atudes et praques de sécurité pour le consommateur et l’installateur

• Avant la mise en œuvre, reniez tout autour de la

zone de l’appareil pour détecter une odeur de gaz. Ne

manquez pas de chercher près du plancher car

certains gaz sont plus lourds que l’air et s’accumulent

au sol.

• Gardez la zone autour de l’appareil dégagée et

exempte de maères combusbles, d’essence et

d’autres vapeurs ou liquides inammables.

• La construcon combusble concerne les closions

adjacentes et le plafond, à ne pas confondre avec les

produits et maères combusbles ou inammables.

Ces derniers ne doivent jamais être entreposés à

proximité de cet appareil au gaz ou de tout autre du

même type.

• Contrôlez toujours la température de l’eau avant de

prendre un bain ou une douche.

• Pour vous protéger de toute aeinte, avant

d’eectuer une intervenon d’entreen :

 Coupez l’alimentaon électrique en débranchant

la che du cordon secteur ou en coupant le

secteur au disjoncteur du circuit. (Le contrôleur de

température ne commande pas l’alimentaon

électrique).

 Coupez l’arrivée du gaz à la vanne manuelle, en

général elle est placée immédiatement sous le

chaue-eau.

 Coupez l’arrivée d’alimentaon en eau. Cela peut

se faire à la vanne d’isolement immédiatement

sous le chaue-eau, ou en coupant la distribuon

d’eau du bâment.

• N’ulisez que votre main pour appuyer sur le bouton

de commande de gaz ou l’enfoncer. N’ulisez jamais

d’ouls. Si la commande ne se tourne pas ou ne

s’enfonce pas à la main, n’essayez pas de la réparer

vous-même, mais appelez un professionnel agréé. Le

fait de forcer ou de tenter une réparaon peut

provoquer un départ d’incendie ou une explosion.

• N’ulisez pas cet appareil si une pare quelconque a

été immergée dans de l’eau. Appelez immédiatement

un professionnel agréé pour inspecter l’appareil et

remplacer toute pièce du système de contrôle et toute

commande de gaz qui aurait séjourné sous l’eau.

• N’ulisez pas de matériel de substuon. N’ulisez

que des pièces cerées pour aller avec l’appareil.

• En cas de surchaue, ou si il est impossible de couper

l’alimentaon en gaz, coupez au niveau de la vanne

manuelle de gaz en amont de l’appareil.

• Ne modiez pas la posion des micro-commutateurs

sauf si cela vous a été demandé expressément.

• N’ulisez pas de cordon rallonge ni d’adaptateur de

prise avec cet appareil.

• Toute altéraon de l’appareil ou de ses commandes

peut être dangereuse et annulerait sa garane.

La loi de Californie exige que cet avis soit fourni :

Proposion 65 de la Californie : Ce produit conent des substances chimiques reconnues par l’état de Californie

comme causant des cancers, des anomalies congénitales, ou d'autres dangers pour la reproducon.

AVERTISSEMENT

Manuel de Série VC 51

Instrucons d’installaon

Étapes d’installaon

Préparaon pour l’installaon ........................... 52

Déterminaon d’emplacement de l’installaon . 53

Liste de contrôle pour choisir l’emplacement

de l’installaon ................................................... 59

Montage mural ................................................... 59

Dépose du panneau frontal ................................ 59

Installaon de venlaon (modèles d’intérieur

uniquement) ....................................................... 60

Condensats (modèles d’intérieur uniquement) . 62

Liste de contrôle pour venlaon et condensats

(modèles d’intérieur uniquement) ..................... 62

Installaon de la plomberie ............................... 63

Liste de contrôle pour la plomberie ................... 66

Installaon de l’alimentaon en gaz .................. 66

Raccordement de l’électricité ............................ 68

Réglage pour forte altude ................................ 68

Réglage pour longueur de venlaon

(modèles d’intérieur uniquement) ..................... 68

Liste de contrôle pour gaz et électricité ............. 68

Installaon de contrôleur de température ........ 69

Liste de contrôle nal .......................................... 71

Instrucons générales Qualicaons de l’installateur

À ÉVITER

• N’installez pas de chaue-eau RL75i, RL94i ou RLX94i

à l’extérieur.

• N’installez pas de chaue-eau RL75e ou RL94e à

l’intérieur.

• N’installez pas l’appareil dans une zone où une fuite

d’eau venant de l’appareil ou de ses raccordements

endommagerait la zone proche ou les étages du

dessous de la structure. Quand une installaon à de

tels emplacements est inévitable, il est recommandé

de placer sous l’appareil un bac de drainage

convenable avec une bonne connexion à un drain de

sol. Ce bac ne doit pas obstruer le ux d’air de

combuson.

• N’obstruez pas le ux d’air de combuson et de

venlaon. L’air de combuson ne doit pas provenir

d’espaces occupés.

• N’ulisez pas cet appareil dans une applicaon telle

que du chauage de piscine ou de spa ulisant de

l’eau chimiquement traitée (Cet appareil convient

pour remplir de grandes baignoires ou des baignoires

d’hydromassage avec de l’eau potable).

• N’ulisez pas des pièces de remplacement qui ne

seraient pas autorisées pour cet appareil.

À FAIRE

• L’installaon doit être en conformité avec les normes

locales, ou en leur absence avec la norme américaine

ANSI Z223.1/NFPA 54 (Gaz combusble), ou la norme

canadienne CSA B149.1 (Installaons au gaz naturel

ou propane). En cas d’installaon en maison

préfabriquée, il faut se conformer à la norme

américaine pour Construcon de maison préfabriqué

et sécurité, Titre 24 CFR, Pare 3280 et/ou à la norme

canadienne CAN/SCA Série Z240 MH (Maison mobile).

• L’appareil une fois installé doit être relié

électriquement à la terre en conformité avec les

normes locales, ou à défaut, avec la norme

américaine électrique, ANSI/NFPA 70, ou la norme

canadienne électrique, CSA C22.1.

• L’appareil et sa vanne de gaz d’alimentaon

devront être débranchés du système de conduite

d’alimentaon en gaz durant tout test de pression

de ce système au-delà de 1/2 psi (3,5 kPa ou 13,84

pouces de hauteur de colonne d’eau).

Type d’installaon

• Produit à installer dans des applicaons résidenelles

et commerciales.

• Ceré pour une installaon dans des maisons

mobiles préfabriquées.

Il est recommandé qu'un professionnel agréé installe

l'appareil, l'inspecte et teste la fuite avant ulisaon. La

garane peut être annulée en raison d'une installaon

incorrecte. L’installateur doit avoir des compétences dans

ces domaines :

• Calibraon de fourniture de gaz.

• Raccordement des conduites de gaz et d’eau, des

vannes et de l’électricité.

• Connaissance des normes applicables (naonales,

provinciales et locales)

• Installaon de venlaon au travers de mur ou de toit

• Formaon en installaon de chaue-eau sans réservoir

(Du perfeconnement est accessible en ligne sur le site

www.trainingevents.rinnai.us).

52 Manuel de Série VC

Préparaon pour l’installaon

Pièces incluses

Ouls nécessaires

Matériaux nécessaires

• L’appareil devra être isolé du système de conduite

d’alimentaon en gaz en fermant sa vanne de

coupure manuelle d’alimentaon durant tout test de

pression de ce système en dessous de 1/2 psi (3,5 kPa

ou13,84 pouces de hauteur de colonne d’eau).

• Vous devez suivre les instrucons d’installaon et

celles de la pare Soins et entreen pour la

conformité de l'admission d’air de combuson et

l’échappement.

INFORMATIONS

• Si un chaue-eau est installé dans un système fermé

de fourniture d’eau, comme un comportant un

disposif an-retour sur sa conduite d’alimentaon

en eau froide, il faut prendre des mesures pour

contrôler l’expansion thermique. Contactez la régie

fournissant l’eau ou un inspecteur local de plomberie

pour connaître la manière de contrôler cee

expansion thermique.

• En cas de surchaue, ou si il est impossible de couper

l’alimentaon en gaz, coupez au niveau de la vanne

manuelle de gaz en amont de l’appareil.

• Maintenez la zone d’admission d’air exempte de

produits chimiques tels que chlore ou agent

blanchissant qui produisent des fumées. Ces fumées

peuvent endommager des composants et réduire la

durée de service de votre appareil.

• Chaue-eau sans réservoir

• Vannes d’isolement repérées par couleur, pour eau

froide (bleu) et chaude (rouge)

• Soupape de décharge

• Contrôleur de température MC-91-2 (intégré dans les

modèles d’intérieur, fourni pour les modèles d’extéri-

eur)

• Clés à tuyaux (2)

• Pinces réglables

• Tournevis (2)

• Pinces coupantes

• Gants

• Lunees de sécurité

• Niveau

Ouls pouvant être nécessaires

• Perceuse à percussion

avec forets pour béton

• Scie

• Fileteuse avec têtes et

buree d'huile

• Foret aléseur avec tête

diamant

• Chalumeau et

accessoires

• Coupe-tubes en cuivre

• Coupe-tubes d’acier

Matériaux pouvant être nécessaires

• Soluon savonneuse ou

spéciale pour détecon

de fuites de gaz

• Venlaon approuvée

• Bande Téon

(recommandée) ou

composion pour tuyaux

• Bande résistant à la

chaleur

• Isolant pour tuyaux

• Fil et gaine électrique

selon la norme locale

• Chevilles pour murs en

béton

• Cache-tuyau oponnel

• Contrôleur de

température oponnel

• Tube exible en PCV de

5/8” de diamètre interne

• Câble à deux

conducteurs 22 AWG

pour le contrôleur

• Boîer électrique à

commande unique

• Bouchons serre-ls

• Raccord-union et

robinets de drainage

Instrucons générales (Suite)

Manuel de Série VC 53

Environnement

Air entourant le chaue eau, l'évacuaon et l'évent

terminaon(s) est ulisé pour la combuson et doit être libre

de tout composés qui causent la corrosion des composants

internes. Ces comprennent des composés corrosifs qui sont

trouvent dans les aérosols, les détergents, les agents de

blanchiment, les solvants de neoyage, huile de base

peintures et vernis et uides frigorigènes. L'air de beauté

bouques, magasins de neoyage à sec, laboratoires de

traitement de photos et aires de stockage des fournitures pool

conent souvent ces composés. Par conséquent, il est

recommandé que les modèles extérieurs soient ulisés pour

ces endroits lorsque c'est possible.

Le chaue-eau, l'évacuaon et l'évent terminaon(s) ne doit

pas être installé dans toutes les zones où l'air de combuson

peut contenir ces composés corrosifs. Si cela est nécessaire

pour un chaue-eau à être situés dans des zones qui peuvent

contenir des composés corrosifs, les instrucons suivantes

sont fortement recommandées.

Considéraons importantes pour:

Chaue-eau d'intérieur

• FAIRE pas les installer dans les zones où air de combuson

peut être contaminé par des substances chimiques.

• Avant l'installaon, examiner où air a la capacité de

voyager dans l'immeuble pour le chauage de l'eau.

• Lorsque c'est possible, installez le chaue-eau dans un

placard scellé an qu'elle est protégée contre le potenel

de l'air intérieur contaminé.

• Substances chimiques qui sont corrosifs dans la nature ne

doivent pas stockées ou ulisées près de chaue-eau.

Chaue-eau extérieurs et Évacuaon des terminaisons de

chaue-eau internes

• Installez le chaue-eau aussi loin que possible des hoes

de venlaon d'échappement.

• Installez aussi loin que possible des bouches d'air inlet.

Fumées corrosives peuvent être libérées par le biais de ces

évents lorsque l'air n'est pas apportée grâce à eux.

• Substances chimiques qui sont corrosifs dans la nature ne

devraient pas stockées ou ulisées près de la cessaon de

chauage ou de vent de l'eau.

Dommages et réparaon en raison de composés corrosifs dans

l'air n'est pas couvert par la garane.

Dans les facteurs à considérer pour l’entreen de votre

chaue-eau il y a l’évaluaon de la qualité de l’eau.

L’eau doit être potable, exempte de produits chimiques

corrosifs, de sable, salissures ou autres contaminants. Il est

de la responsabilité de l’installateur de s’assurer que l’eau ne

conent pas de produits chimiques corrosifs ou d’éléments

qui pourraient aecter ou endommager le chaue-eau. Une

eau qui conent des produits chimiques dépassant les seuils

montré dans ce tableau aecte et endommage l’échangeur

thermique. Un remplacement de chaue-eau résultant d’une

mauvaise qualité d’eau n’est pas couvert par la garane.

Niveau maximum

Dureté totale Jusqu'à 200 mg/L

Aluminium* Jusqu'à 0,2 mg/L

Chlorures* Jusqu'à 250 mg/L

Cuivre* Jusqu'à 1,0 mg/L

Dioxyde de carbone dissous (CO

) Jusqu’à 15,0 mg / L, ou PPM

Fer* Jusqu'à 0,3 mg/L

Manganèse* Jusqu'à 0,05 mg/L

pH * 6,5 à 8,5

Maères dissoutes totales (MDT)* Jusqu'à 500 mg/L

Zinc * Jusqu'à 5 mg/L

Déterminez l'endroit d’installaon

Qualité de l'eau

* Source : Pare 143 réglementaons naonales d'eau potable

secondaire

Si vous vivez dans une région connue pour la dureté de son

eau, ou pour causer des accumulaons de tartre, vous devez

traiter votre eau et/ou rincer régulièrement l’échangeur

thermique.

Quand du tartre qui s’accumule dans le chaue-eau

commence à aecter sa performance, un code de diagnosc

“LC#” va s’acher. Rincez l’échangeur thermique pour éviter

qu’il ne soit endommagé. Une accumulaon de tartre est due

à de l’eau dure avec une consigne réglée à température

élevée.

Rinnai propose le “Système de condionnement d’eau

ScaleCuer” de Southeastern Filtraon qui permet une

prévenon supérieure du niveau d’entartage et du contrôle

de la corrosion, en injectant un mélange de composés de

contrôle dans l’alimentaon en eau froide.

Vous devez vous assurer que les habilitaons seront sasfaites

et que le cloaque sera dans les limites requises. Tenir compte

de l'environnement d'installaon, qualité de l'eau et nécessité

d'une protecon de gel. On trouvera des exigences pour la

conduite de gaz, conduites d'eau, connexion électrique et

d'éliminaon de condensat dans leurs secons respecves

d'installaon de ce manuel.

Rinnai propose le “Système de condionnement d’eau

ScaleCuer” de Southeastern Filtraon qui permet une pré-

venon supérieure du niveau d’entartage et du contrôle de la

corrosion, en injectant un mélange de composés de contrôle

dans l’alimentaon en eau froide.

Référence Descripon

103000038

Southeastern Filtratrion

ScaleCuer System 3/4” Feed

103000039

ScaleCuer Rell

54 Manuel de Série VC

[1] Une venlaon ne doit pas se terminer directement au-dessus d’un trooir ou d’une voie de

circulaon pavée qui serait située entre deux construcons familiales et desservant les deux.

[2] Autorisé seulement si véranda, porche, plate-forme ou balcon ont une complète ouverture

au moins sur deux côtés en-dessous de l’étage.

* Pour des dégagements non spéciés dans ANSI Z223.1/NFPA 54, ils devront être en

conformité avec les normes locales d’installaon et les exigences du fournisseur de gaz. Le

dégagement par rapport à un mur opposé est de 24 pouces (60 cm).

Venlaon directe (Chaue-eau d’intérieur) Venlaon indirecte (Chaue-eau d’extérieur)

Réf. Descripon

Installaons canadiennes

(CSA B149.1)

Installaons américaines

(ANSI Z223.1 / NFPA 54)

Installaons canadiennes

(CSA B149.1)

Installaons américaines

(ANSI Z223.1 / NFPA 54)

Dégagement au-dessus de niveau du sol, véranda,

porche, plate-forme ou balcon

12 po. (30 cm) 12 po. (30 cm) 12 po. (30 cm) 12 po. (30 cm)

Dégagement par rapport à porte ou fenêtre pouvant

être ouverte

36 po. (91 cm) 12 po. (30 cm)

6 po. (15 cm) pour les appareils ≤ 10

000 Btu/h (3 kW), 12 po.

(30 cm) pour ceux > 10 000 Btu/h (3

kW) et ≤ 100 000 Btu/h

(30 kW), 36 po. (91 cm) pour ceux

>100 000 Btu/h (30 kW)

4 pieds (1,2 m) sous ou sur le côté de

l’ouverture ;

1 pied (30 cm) au-dessus de l’ouverture

Dégagement par rapport à une fenêtre restant

fermée en permanence

* * * *

Dégagement vercal par rapport à un sote venlé,

situé au-dessus de la terminaison à une distance

horizontale de moins de 2 pieds (60 cm) de l’axe de

cee terminaison

* * * *

E Dégagement par rapport à un sote non venlé * * * *

F Dégagement par rapport à un angle sortant * * * *

G Dégagement par rapport à un angle rentrant * * * *

Dégagement par rapport à une ligne centrale

prolongée au-dessus de l’ensemble de compteur/

régulateur

* * * *

Dégagement par rapport à la sore de venlaon

d’un régulateur de service

Au-dessus d'un régulateur

situé à moins de 3 pi (91

cm) horizontalement de la

ligne médiane vercale de

la sore d'aéraon du

régulateur jusqu'à une

distance vercale

maximale de 4,5 m (15 pi)

Au-dessus d'un régulateur situé à

moins de 3 pi (91 cm)

horizontalement de la ligne médiane

vercale de la sore d'aéraon du

régulateur jusqu'à une distance

vercale maximale de 4,5 m (15 pi)

Écartement par rapport à une admission d’air non-

mécanique dans le bâment, ou l’arrivée d’air de

combuson vers un autre appareil

36 po. (91 cm) 12 po. (30 cm)

6 po. (15 cm) pour les appareils ≤ 10

000 Btu/h (3 kW), 12 po.

(30 cm) pour ceux > 10 000 Btu/h (3

kW) et ≤ 100 000 Btu/h

(30 kW), 36 po. (91 cm) pour ceux

>100 000 Btu/h (30 kW)

4 pieds (1,2 m) sous ou sur le côté de

l’ouverture ;

1 pied (30 cm) au-dessus de l’ouverture

Dégagement par rapport à une admission d’air

mécanique

6 pieds (183 cm)

3 pieds (91 cm) au-dessus

si à moins de 10 pieds

(3 m) horizontalement

6 pieds (183 cm)

3 pieds (91 cm) au-dessus si à moins de 10 pieds

(3 m) horizontalement

Dégagement au-dessus de passage ou de trooir

pavé appartenant au domaine public

7 pieds (213 cm)  * 7 pieds (213 cm)  7 pieds (213 cm)

Dégagement par-dessus véranda, porche, plate-

forme ou balcon

12 po. (30 cm)  * 12 po. (30 cm)  *

Dégagements à la terminaison

Pour les modèles d’intérieur, vous devez installer une terminaison de venlaon pour faire entrer de l’air de combuson et dégager les

gaz d’échappement.

POUVANT

S’OUVRIR

DÉTAIL D’ANGLE

RENTRANT

FERMÉ EN

PERMANENCE

POUVANT

S’OUVRIR

FERMÉ EN

PERMA-

NENCE

Sore d'evacuaon

du régulateur

BOUCHE D’ALIMENTATION

EN AIR

TERMINAISON DE

VENTILATION

SNOW

TERMINATION

Clearance in

Ref. A also

applies to

anticipated

snow line

NEIGE

TERMINAISON

Le dégagement

en référence A

s’applique à la

hauteur de

neige prévue

Manuel de Série VC 55

24"

Contrôlez si des réglementaons locales sont plus exigeantes

que ces valeurs de dégagements.

• Évitez de posionner des terminaisons près d'une

venlaon d’un déshydrateur

• Évitez de posionner des terminaisons près d’une

évacuaon de cuisine commerciale.

• Vous devez installer une terminaison de venlaon à

au moins 12 pouces (30 cm) du sol.

60"

(1,52 m) entre

des terminaisons

à des niveaux

diérents

(0,61 m) jusqu’à un mur ou parap et

(0,30 m) entre des

terminaisons au

même niveau

12"

V V

(1,52 m) vercalement

entre des terminaisons

60"

Dégagements addionnels - RL75i, RL94i, RLX94

12"

36"

INSIDE

CORNER

V V

(0,30 m)

jusqu’à un

angle rentrant

(0,30 m) entre des

terminaisons au même

niveau

Importantes considéraons pour situer la terminaison de

venlaon sous un sote (venlé ou non, ou à évent d’avant

-toit, ou bien sous un platelage ou un porche)

• N’installez pas de terminaison de venlaon sous un

sote de manière que son évacuaon puisse entrer

dans l’évent de sote

• Installez la terminaison de venlaon de sorte que

l’échappement et l’humidité qui en sort ne soient pas

collectés sous l’avant-toit. Une décoloraon de

l’extérieur du bâment pourrait survenir en cas

d’installaon trop proche.

• N’installez pas la terminaison de venlaon trop près

sous le sote où elle pourrait causer une recirculaon

des gaz d’échappement dans l’admission d’air de

combuson faisant pare de cee terminaison

ANGLE

RENTRANT

56 Manuel de Série VC

12"

60"

36"

Les normes locales ont la préséance sur ces recommandaons.

• Évitez de posionner des terminaisons près d'une

venlaon d’un déshydrateur.

• Évitez de posionner des terminaisons près d’une

évacuaon de cuisine commerciale.

• Évitez de posionner des terminaisons près de

n’importe quelles bouches d’admission d’air.

Dégagements addionnels -

RL75e, RL94e

(0,30 m) jusqu’à

un angle

rentrant

(50 mm) entre des terminaisons au même niveau

(1,52 m) vercalement

entre des terminaisons

(0,91 m) jusqu’à un sote venlé ou non, ou

un évent d’avant-toit, ou bien une plate-

forme ou un porche

Manuel de Série VC 57

Dégagements autour du chaue-eau

* 0 pouce depuis les composants de venlaon et la

conduite de drainage de condensats.

L’espace libre pour les intervenons de service est de 24

pouces (61 cm) vers l’avant du chaue-eau.

Pour une installaon en armoire, l’écartement est de 5

pouces (152 mm) depuis l’avant.

Modèles d’intérieur : RL75i, RL94i, RLX94i

Modèles d’extérieur : RL75e, RL94e

L’espace libre pour les intervenons de service est de

24 pouces (61 cm) vers l’avant du chaue-eau.

Par rapport à des

combusbles,

en pouces (mm)

Par rapport à des

non-combusbles

en pouces (mm)

Haut du chaue-eau

12 (305) 2 (51)

Arrière du chaue-eau

0 (zero) 0 (zéro)

Avant (panneau)

24 (610) 0 (zéro)

Avant (évacuaon)

24 (610) 24 (610)

Côtés du chaue-eau 6 (152) 1/8 (3.2)

Sol/plancher

12 (305) 2 (51)

Par rapport à des

combusbles,

en pouces (mm)

Par rapport à des

non-combusbles,

en pouces (mm)

Haut du chaue-eau

6 * (152) 2 *(51)

Arrière du chaue-

eau

0 (zero) 0 (zéro)

Avant du chaue-eau

6 (152) 6 (152)

Côtés du chaue-eau

2 (51) 1/2 (13)

Sol/plancher

12 (305) 12 (305)

Venlaon

0 (zero) 0 (zero)

to side

to front

to top

to ground/bottom

to side

to front

to top

to ground/bottom

Vers le

haut

Vers le

haut

Vers le

haut

to side

to front

to top

to ground/bottom

Vers le

haut

Vers le côté

Vers l’avant

Vers le sol/le bas

58 Manuel de Série VC

Protecon contre le gel

Assurez-vous que par temps très froid le chaue-eau et ses

conduites d'eau sont protégées pour éviter le gel. Les

dommages dus au gel ne sont pas couverts par la garane.

Avec un raccordement sur le secteur et une alimentaon

en gaz, le chaue-eau ne gèlera pas quand la température

de l’air ambiant extérieur descend jusqu’à -22°F (-30 °C)

pour les modèles d’intérieur, ou -4°F (-20 °C) pour les

modèles d’extérieur, en étant protégé contre une

exposion à un courant d’air direct. Du fait du

refroidissement par le vent, tout vent ou air circulant sur

l’appareil réduira sa capacité à résister au gel.

Dans l’éventualité d’une panne d’alimentaon secteur ou

une coupure de gaz, à des température en dessous de 0 °C,

le chaue-eau doit être vidangé de toute son eau pour

éviter des dégâts par le gel. De plus, il faut vider aussi le

piège à condensats et la conduite de drainage.

Une perte de protecon contre le gel peut entraîner des

dégâts des eaux venant d’un échangeur thermique ou de

conduites d’eau qui ont explosé.

L’appareil peut être vidangé manuellement. Cependant il

est fortement recommandé que :

• Des électrovannes de vidange soient achetées et

installées pour vider automaquement le chaue-eau

en cas de coupure d’alimentaon secteur. Elles sont

proposées dans un kit, N° de pièce 104000059 (Le

bouchon de drainage du piège à condensats et le

bouchon de drainage d’eau ne sont pas aectés par les

électrovannes de purge, et devront être ouverts

manuellement).

• Un parasurtenseur avec prises soit acheté et installé de

façon à permere aux électrovannes de fonconner si

le chaue-eau est désacvé du fait d’un code de

diagnosc. Il est disponible sous le N° 104000057.

De plus, ces électrovannes devront être connectées

électriquement sur un parasurtenseur avec des prises. Cela

permet aux électrovannes de fonconner si le chaue-eau

est désacvé suite à un code de diagnosc.

Les capacités de protecon contre le gel n’empêchent pas

la tuyauterie extérieure de geler. Il est recommandé

d’isoler les tuyaux d’eau chaude comme d’eau froide. Des

caches de couverture de tuyaux peuvent être remplis de

maère isolante pour plus de protecon contre le gel.

Longueur maximale de venlaon

(modèles d’intérieur uniquement)

Déterminez le nombre de coudes à 90 degrés dans le

système de venlaon (Deux coudes à 45 degrés

comptent comme un coude à 90 degrés).

Reportez-vous à ce tableau pour trouver la longueur

maximale de venlaon compte tenu du nombre de

coudes

Réglez le micro-commutateur DIP N° 1 du bloc SW1

(micro-commutateurs bronze) si c’est demandé par la

note applicable.

 Si la longueur est supérieure à 21 pieds (6,4 m), alors

passez le micro-commutateur N° 1 de SW1 sur OFF.

 Si la longueur est supérieure à 15 pieds (4,6 m), alors

passez le micro-commutateur N° 1 de SW1 sur OFF.

 Si la longueur est supérieure à 9 pieds (2,7 m), alors

passez le micro-commutateur N° 1 de SW1 sur OFF.

 Passez le micro-commutateur N° 1 de SW1 sur OFF.

Exemple : Si vous avez un coude alors votre longueur

maximale de venlaon est de 35 pieds (10,7

m). Si la longueur réelle calculée est supérieure

à 15 pieds (4,6 m), alors passez le micro-

commutateur N° 1 de SW1 sur OFF.

Nombre de

coudes à 90°

Longueur maximale de venlaon

0 41 pieds (12,5 m) 

1 35 pieds (10,7 m) 

2 29 pieds (8,8 m) 

3 23 pieds (7,0 m) 

4 17 pieds (5,2 m) 

5 11 pieds (3,4 m) 

6 5 pieds (1,5 m) 

Si votre longueur de venlaon est plus grande que la

prescripon (voir la note 3 sur cee longueur max. de

venlaon), alors il faut mere ce micro-commutateur N° 1

en posion OFF. Cela assure le bon fonconnement du

chaue-eau. Des codes de diagnosc de conduit bloqué et

des interrupons de fonconnement peuvent venir d’une

posion incorrecte de ce micro-commutateur N° 1.

AVIS

Manuel de Série VC 59

Montage mural

Supports

d’installaon

murale

1. Idenez l’emplacement de l’installaon et conrmez

qu’elle respectera tous les dégagements obligatoires.

2. Fixez solidement le chaue-eau au mur en ulisant

n'importe quels trous dans les supports d’installaon

murale qui sont en haut et en bas du chaue-eau.

Assurez-vous que la force des aaches est susante

pour supporter le poids. Référez-vous au poids du

chaue-eau plein dans la secon des spécicaons.

Ulisez un oul de mesure de niveau pour vous

assurer que le chaue-eau est xé d’aplomb. Son bon

fonconnement exige que le chaue-eau soit de

niveau.

REMARQUE : Le chaue-eau ne doit être placé qu’en

posion droite. Ne l’installez pas tête en bas ou sur le

côté.

Liste de contrôle pour choisir

l’emplacement de l’installaon

□ Le chaue-eau n’est pas exposé à des composés

corrosifs dans l’air.

□ L’emplacement du chaue-eau permet de respecter

les dégagements.

□ Pour les modèles d’intérieur, la venlaon prévue ne

dépassera pas la longueur maximale en foncon du

nombre de coudes ulisé.

□ L’emplacement prévu pour la terminaison de

venlaon/admission d’air permera de respecter les

dégagements.

□ De l’air d’extérieur n’est pas ulisé pour la combuson.

□ L’eau d’alimentaon ne conent pas de produits

chimiques et ne présente pas un taux de dureté qui

endommagerait l’échangeur thermique.

□ Une prise murale standard 3 broches pour

alimentaon secteur 120 V CA/60 Hz (pour modèles

d’intérieur), correctement reliée à la terre, ou une

autre source secteur équivalente, est disponible.

□ L’installaon doit être en conformité avec les normes

locales, ou en leur absence avec la norme américaine

ANSI Z223.1/NFPA 54 (Gaz combusble), ou la norme

canadienne CSA B149.1 (Installaons au gaz naturel ou

propane). En cas d’installaon en maison préfabriquée,

il faut se conformer à la norme américaine pour

Construcon de maison préfabriqué et sécurité, Titre

24 CFR, Pare 3280 et/ou à la norme canadienne CAN/

SCA Z240 Série MH (Maisons mobiles).

□ Laissez tout le manuel xé par bande sur le chaue-

eau (modèles d’intérieur), ou sur le contrôleur de

température (modèles d’extérieur), ou donnez-le

directement au consommateur.

Dépose du panneau avant

Glissez les caches de garniture en plasque de chaque côté

du chaue-eau pour exposer les vis.

Enlevez les 4 vis et rez le panneau avant pour le sorr.

60 Manuel de Série VC

Fabricant

Produits de venlaon listés et testés

pour RL75i, RL94i et RLX94i

Téléphone Télécopie Contact

Ubbink Système de venlaon Rolux 800-621-9419 678-829-1666 www.rinnai.us

Heat-Fab Système SC de venlaon Saf-T 800-772-0739 413-863-4803

custsvc@heat-fab.com,

www.heaab.com

Metal-Fab

Système de venlaon / admission

d’air Corr/Guar

800-835-2830 316-943-2717

[email protected], www.metal-

fabinc.com

Installaon de venlaon (modèles d’intérieur uniquement)

Installez la venlaon correcte pour votre modèle en suivant les instrucons de son fabricant et les consignes qui suivent.

Référez-vous à la liérature technique du fabricant pour les numéros de pièces et les instrucons spéciques.

Consignes pour la venlaon

À ÉVITER

• N’ulisez pas de PCV, CPCV, ABS ou matériau galvanisé

pour venler cet appareil.

• Ne combinez pas des composants de venlaon venant

de fabricants diérents.

• Le diamètre de la venlaon ne doit pas être rétréci.

• Ne connectez pas le système de venlaon sur une

évacuaon ou cheminée existante.

• Ne partagez pas une venlaon avec le tuyau de

venlaon de tout autre constructeur de chaue-eau

ou appareil.

À FAIRE

• Ce chaue-eau est un modèle à venlaon directe et,

de ce fait, il est ceré et listé avec le système de

venlaon. Vous devez uliser des composants de

venlaon qui sont cerés et listés pour aller avec le

modèle de chaue-eau.

• Le système de venlaon doit donner directement sur

l’extérieur du bâment et uliser de l’air extérieur pour

la combuson.

• Évitez les aaissements et points bas dans les tronçons

horizontaux de venlaon en installant des supports

selon les instrucons du constructeur de la venlaon.

• Supportez les tronçons horizontaux de venlaon tous

les quatre pieds (120 cm) et tous les tronçons vercaux

tous les six pieds (180 cm) ou en conformité avec les

normes locales.

• La venlaon doit être aussi directe que possible avec

un minimum de raccords de tuyaux.

• Les connexions de venlaon doivent être fermement

pressées ensemble de façon à ce que les joints soient

bien étanches à l’air.

• La pare de venlaon connectée sur le chaue-eau

doit être xée avec une vis autotaraudeuse.

INFORMATIONS

• Référez-vous aux instrucons du fabricant de système

de venlaon pour le montage des composants.

• Si le système de venlaon doit être enfermé, il est

suggéré que la concepon de son enveloppe permee

son inspecon. La concepon de cee enveloppe doit

être jugée acceptable par l’installateur ou l’inspecteur

local.

AVIS

S’il devient nécessaire d’accéder à un système de

venlaon enfermé pour des intervenons de service ou

de réparaon, Rinnai n’est pas responsable des coûts ou

des dicultés pour y accéder. La garane ne couvre pas

l’obtenon d’un accès au système de venlaon dans un

environnement fermé.

Manuel de Série VC 61

Terminaison vercale

(Un collecteur de condensats doit être ulisé dans toutes les installaons)

3 pouces

(75 mm) minimum

3 pouces

(75 mm)

minimum

Terminaison horizontale ulisant le collecteur de

condensats

3 pouces

(75 mm)

minimum

Piège à

condensat

1. Desserrez les 4 vis au support arrière.

2. Faites glisser le support en l’écartant du haut de

venlaon femelle.

3. Enlevez les 4 vis xant le haut de venlaon femelle au

chaue-eau.

4. Soulevez le haut de venlaon femelle et reposionnez-le

comme désiré (ou remplacez-le par un haut de venlaon

male).

5. Installez les 4 vis sur le haut de venlaon et serrez-les

sur le support.

Fixez la première pare de venlaon branchée sur le

chaue-eau avec une vis autotaraudeuse à l’emplacement

du trou au-dessus du collecteur de condensats.

Support

Collecteur de condensats

Vis de xaon

Installaon horizontale sans uliser de collecteur de condensats

Hauteur maximale *

5 pieds (1,52 m)

Dans les régions à climat froid, il y aura

plus de condensats dans le système de

venlaon. Le collecteur de condensats

doit être ulisé dans les climats froids.

Si plus d’un coude est ulisé dans la

secon vercale il faut uliser le

collecteur de condensats.

* Le collecteur de condensats doit être ulisé

pour les terminaisons horizontales si la montée

vercale du système de venlaon dépasse 5

pieds (1,5 m).

Si le collecteur de condensats n’est pas ulisé, le tube de drainage

doit être capuchonné pour éviter que des gaz d’échappement et

des condensats n’entrent dans le bâment. Le capuchon est livré

avec l’appareil. Dans ce cas inclinez vers le bas la venlaon de

1/4” par pied (soit 1 cm/48 cm) depuis le chaue-eau selon les

instrucons d’installaon du fabricant.

Installez la terminaison de venlaon en foncon des schémas et des instrucons qui suivent.

Inclinez la venlaon en direcon du

chaue-eau (1/4” par pied, soit 1 cm/48

cm) selon les instrucons d’installaon du

fabricant. Meez les condensats au rebut

selon les normes locales.

AVERTISSEMENT

Pour ajuster la posion du collecteur de condensats ou remplacer le haut de venlaon femelle par un mâle :

Installaon d’évacuaon des gaz de combuson (modèles d’intérieur uniquement)

62 Manuel de Série VC

Condensats

(modèles d’intérieur uniquement)

Des condensats peuvent se former dans la venlaon

d’appareils à venlaon directe de grande ecacité. Sans

un drainage correct les condensats endommageraient

l’échangeur thermique.

Pour éviter des dégâts dus aux condensats, suivez ces

instrucons.

À ÉVITER

• Ne laissez pas de condensats entrer dans le chaue-eau.

• Ne branchez pas le tuyau de drainage de condensats

directement dans l’égout à eau de pluie.

• Ne branchez pas le tuyau de drainage de condensats sur

un drain de serpenn d’évaporateur de

condionnement d’air.

• Ne connectez pas le tuyau de drainage de condensats

sur la conduite de soupape de décharge de l’appareil.

À FAIRE

• N’ulisez qu’une venlaon qui est approuvée et

idenée pour votre modèle parculier.

• Pour des terminaisons vercales, installez un drain et un

piège pour condensats aussi près que possible de

l’appareil.

• Inclinez la venlaon en direcon du chaue-eau selon

les instrucons d’installaon du fabricant de venlaon.

• Tous les condensats doivent être mis au rebut

conformément aux normes locales.

• N’ulisez que des matériaux résistant à la corrosion

pour les conduites de drainage de condensats, comme

du tube en PCV ou du tuyau en plasque.

• Le tuyau de drainage de condensats (sur toute sa

longueur) doit être au moins du même diamètre que la

conduite de drainage (5/8 de pouce, NPT).

• L’extrémité du tube de drainage de condensats doit être

ouverte sur l’atmosphère. Elle ne doit pas arriver sous

l’eau ni dans d’autres substances.

• Pour minimiser le gel de condensats, faites passer la

conduite de drainage de condensats par un mur

intérieur ou entre une isolaon et un mur intérieur.

• Un collecteur de condensats doit être ulisé pour toutes

les applicaons de chauage à eau chaude.

Liste de contrôle pour venlaon et

condensats (Modèles d’intérieur

uniquement)

□ Vériez que les dégagements sont corrects autour des

sores de venlaon et d’admissions d’air.

□ Assurez-vous d’avoir ulisé les produits de venlaon

corrects pour le modèle installé, et que vous avez bien

suivi enèrement les instrucons d’installaon du

fabricant et celles de ce manuel.

□ Vériez que le tube de venlaon a bien une pente

vers l’extérieur de 1/4 pouce par pied (1,2°) OU qu’il

est incliné vers le chaue-eau (comme le demandent

certaines normes locales), que le collecteur de

condensats est installé de façon à permere de drainer

les condensats en l’écartant du chaue-eau vers un

drain adéquat.

□ Vériez que les condensats n’auront pas la possibilité

de revenir dans le chaue-eau.

□ Vériez que la venlaon prévue ne dépassera pas la

longueur maximale en foncon du nombre de coudes

ulisés.

INFORMATIONS

• Un piège à condensat est disponible sous le N° de pièce

222053.

• Dans les régions à climat froid, il y aura plus de

condensats dans le système de venlaon. Le collecteur

de condensats doit être ulisé dans les climats froids.

• La conduite de drainage du condensat doit être aussi

courte que possible et avoir une pente descendante.

Manuel de Série VC 63

Installaon de la plomberie

Des vannes d’isolement sont incluses sur ce chaue-eau.

Rinnai recommande fortement l’installaon de vannes

d’isolement sur les conduites d’eau chaude et d’eau froide,

car elles donnent la possibilité d’isoler le chaue-eau de la

plomberie de la structure et permeent un accès rapide

pour rincer le chaue-eau. Un rinçage régulier de

l’échangeur thermique est nécessaire dans le cadre d’un

bon entreen de ce chaue-eau.

Besoins en tuyauterie

Une vanne de commande manuelle d’arrivée d’eau doit

être placée dans la connexion d’entrée du chaue-eau

avant de le relier à la conduite d’eau. Des raccords-union

peuvent être ulisés sur les conduites d’eau froide et

chaude pour faciliter les futures intervenons de service et

le débranchement du chaue-eau.

À ÉVITER

• N’introduisez pas de produits chimiques toxiques

comme ceux ulisés pour le traitement des eaux de

chaudière à l’eau potable servant au chauage des

locaux.

À FAIRE

• La tuyauterie (incluant les matériaux de soudage) et les

composants reliés à cet appareil doivent être approuvés

pour une ulisaon avec des systèmes à eau potable.

• Purgez la conduite d’eau pour chasser tous les débris et

l’air résiduel. Les débris abîmeraient le chaue-eau.

• Si l’appareil doit être ulisé sur une source d’eau

potable, il ne doit pas être connecté à un système qui

était précédemment ulisé avec de l’eau non-potable

pour appareil de chauage.

• Assurez-vous qu’un ltre à eau propre est bien installé

sur le chaue-eau.

Vannes d’isolement

Besoins pour la soupape de décharge

Installez la soupape de décharge en suivant ces

instrucons.

Une soupape de décharge approuvée est obligatoire selon

la norme américaine ANSI Z21.10.3 sur tous les systèmes de

chaue-eau, et doit rester accessibles pour les

intervenons de service.

À ÉVITER

• Ne bouchez pas la soupape de décharge et n’installez

pas de raccords réducteurs ou d’autres restricons sur

la conduite de décharge. Cee conduite de décharge

permet un drainage complet de la soupape et de la

conduite.

• Ne placez aucun type de vanne ou de disposif de

coupure entre la soupape de décharge et le chaue-

eau.

À FAIRE

• La soupape de décharge doit être conforme aux

réglementaons ANSI Z21.22 (Relief Valves and

Automac Gas Shuto Devices for Hot Water Supply

Systems) et ou à CAN1-4.4 (Temperature, Pressure,

Temperature and Pressure Relief Valves and Vacuum

Relief Valves).

• La soupape de décharge doit être calibrée pour jusqu’à

150 psi et au moins le taux BTU/h maximal du chaue-

eau.

• La sore de la soupape de décharge doit être envoyée

par tuyau au sol ou dans un système de drainage selon

les normes locales.

• La soupape de décharge doit être aconnée une fois par

an manuellement pour vérier son bon fonconnement.

• La soupape de décharge doit être ajoutée sur la

conduite de sore d’eau chaude et près de la sore

d’eau chaude du chaue-eau, en suivant les instrucons

du fabricant.

• NE placez AUCUN autre type de robinet ou de disposif

de coupure entre la soupape de décharge et le chaue-

eau.

INFORMATIONS

• Si une soupape de décharge crache périodiquement,

cela peut être dû à une expansion thermique dans un

système de fourniture d’eau en circuit fermé. Contactez

la régie fournissant l’eau ou un inspecteur de plomberie

local pour corriger cee situaon. Ne bouchez pas la

soupape de décharge.

• La norme américaine (ANSI Z21.10.3) ne demande pas

une soupape de décharge par combinaison de

température et de pression pour cet appareil.

Cependant des normes locales peuvent exiger cee

combinaison.

L’eau crachée par la soupape de décharge peut causer in-

stantanément des brûlures graves et de l’échaudage pou-

vant être mortel.

AVERTISSEMENT

64 Manuel de Série VC

Vannes d’isolement et soupapes de décharge

Les vannes d’isolement procurent la capacité d’isoler le chaue-eau de la plomberie de la structure et de permere un ac-

cès rapide pour rincer l’échangeur thermique. Contrôlez dans les normes locales si une soupape de décharge déclenchée sur

pression et température est nécessaire. Les vannes incluses sont conformes aux normes naonales américaines (ANSI

Z21.10.3) et canadiennes (CSA 4.3) et ont l’approbaon ANSI/NSF 61 pour traiter de l’eau potable.

Instrucons d’installaon des vannes d’isolaon :

1. Entourez ainsi que l’extrémité letée de la soupape de décharge approuvée, avec un minimum de 5 tours de bande

Teon®.

2. Installez la soupape de décharge sur le port leté 3/4” sur la vanne de service d’eau chaude "HOT" ROUGE (qui sera

adjacente à la coupure, ou au-dessus, mais jamais dessous). Voyez la secon relave à la soupape de décharge pour les

besoins d’une bonne installaon.

3. Placez le robinet d’isolement chaud (rouge) sous le tuyau chaud.

4. Serrez à la main le joint pivotant de la vanne d’isolement chaude (rouge) sur le côté chaud du chaue-eau.

5. Tournez la soupape de décharge à une posion accessible. Serrez le joint pivotant sur le chaue-eau avec une clé.

6. Répétez les points 3 à 5 pour le robinet d’isolement froid (bleu).

7. Connectez le robinet d’isolement froid (bleu) à la conduite d’eau froide.

8. Connectez le robinet d’isolement chaud (rouge) à la conduite d’eau chaude.

9. Assurez-vous que les deux robinets de vidange sont fermées avant d’ouvrir le robinet d’eau.

Instrucons d’installaon de soupape de décharge (PRV) :

La soupape de décharge (PRV) doit être connectée sur le port leté 3/4” de la vanne de service d’eau chaude "HOT" ROUGE

(qui sera adjacente à la coupure, ou au-dessus, mais jamais dessous). L’installaon doit maintenir une taille de port de 3/4"

sans vanne de coupure ni restricon de conduite entre le chaue-eau et la PRV. La conduite de décharge de la PRV doit être

inclinée vers le bas et se terminer 6" (15 cm) au-dessus des drains où l’évacuaon doit être clairement visible. L’extrémité

de décharge de la conduite doit être lisse (non-letée) avec un diamètre d’au moins 3/4". Le matériau de cee conduite de

décharge doit supporter de l’eau à au moins 180°F (82 °C). Aucune vanne quelque soit son type ne doit être installée dans

cee conduite de décharge de la soupape de décharge.

Entreen de la soupape de décharge :

Pour entretenir correctement cee soupape de décharge approuvée, il est recommandé qu’elle soit acvée manuellement

une fois par an. Pour cela, il est nécessaire de prendre des précauons contre la sore d’eau sous pression pouvant poten-

ellement vous ébouillanter. Assurez-vous que l’eau évacuée à un endroit où s’écouler sans danger. Un contact avec votre

corps ou des objets proches peut causer une blessure ou des dégâts.

Veuillez noter que seule cee PRV dans le lot est cerée par CSA Internaonal comme arcle approuvé.

Le joint pivotant

La soupape

de décharge

Tuyau chaud

Robinet d’isolement

chaud (rouge)

Robinet d’isolement

froid (bleu)

Robinet de vidange

Tuyau froid

Manuel de Série VC 65