Rinnai REHP80 Electric Heat Pump Water Heater User Manual

Rinnai Electric Heat Pump Water Heater Manual

DO NOT destroy this manual. Please read the manual and labels thoroughly located on the water

heater before you install, operate, or service it. Consult your manufacturer or your dealer for details

concerning your product. The illustraon on the front cover is for reference only.

WARNING

1. Welcome ............................................................................................................................ 4

1.1 To the Installer and Consumer .................................................................................................4

1.2 For Your Records ......................................................................................................................4

2. Safety .................................................................................................................................. 5

2.1 Read the Safety Informaon ....................................................................................................5

2.2 Safety Precauons....................................................................................................................5

2.3 Relief Valve Warnings ..............................................................................................................7

2.4 Coin Cell baery Warnings .......................................................................................................8

2.5 Addional Precauons .............................................................................................................9

3. Understanding Heat Pump Water Heater ............................................................................. 10

3.1 Operang Principle ..................................................................................................................10

3.2 System Schemac ....................................................................................................................10

4. About the Water Heater ...................................................................................................... 11

4.1 Top View...................................................................................................................................11

4.2 Front View ................................................................................................................................11

4.3 Components .............................................................................................................................12

4.4 General Specicaon ...............................................................................................................12

4.5 Included Items with Unit ..........................................................................................................13

4.6 Accessories ...............................................................................................................................13

5. Installaon Instrucons ....................................................................................................... 14

5.1 Local Installaon Regulaons...................................................................................................14

5.2 Addional Clearances ..............................................................................................................14

5.3 Recommended Locaons for Maximum Energy Saving (Not Ducted) .....................................15

5.4 Inspect Shipment .....................................................................................................................16

5.5 Posioning the Heat Pump ......................................................................................................16

5.6 Thermal Expansion ...................................................................................................................17

5.7 Water Supply Connecons .......................................................................................................17

5.8 Condensate Drain .....................................................................................................................18

5.9 Typical Installaon ...................................................................................................................19

5.10 Relief Valve .............................................................................................................................19

5.11 To Fill the Water Heater ........................................................................................................20

5.12 Electrical Connecon .............................................................................................................20

5.13 Insulaon Blanket ..................................................................................................................23

5.14 Hot and Cold Pipe Insulaon Installaon ...............................................................................24

5.15 Ducng Requirement .............................................................................................................24

6. Operang Instrucon ........................................................................................................... 25

6.1 Start-Up Informaon ................................................................................................................25

6.2 Operaon .................................................................................................................................26

6.3 Engineering Channel ................................................................................................................33

Rinnai Electric Heat Pump Water Heater Manual

7. Care & Cleaning ................................................................................................................... 35

7.1 Roune Prevenve Care .......................................................................................................... 35

7.2 Draining the Water Heater ...................................................................................................... 35

7.3 Element Heater ........................................................................................................................ 35

7.4 Air Filter Maintenance ............................................................................................................. 36

7.5 Condensate Drain Maintenance .............................................................................................. 36

7.6 TCO Switch Check .................................................................................................................... 36

7.7 Vacaon and Extended Shut-Down ......................................................................................... 36

7.8 Anode Rod Maintenance ......................................................................................................... 36

8. Troubleshoong Tips ........................................................................................................... 37

8.1 Before you Call for Service ....................................................................................................... 37

8.2 Troubleshoong ....................................................................................................................... 37

8.3 Performance Data .................................................................................................................... 38

8.4 Error Codes .............................................................................................................................. 39

9. Customer Service ................................................................................................................. 42

9.1 CTA Module Set-Up .................................................................................................................. 42

9.2 Demand Response (CTA-2045) Installaons ............................................................................ 43

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

9.4 Thermal Cut-o Reset Instrucons .......................................................................................... 46

9.5 Wiring Diagram ....................................................................................................................... 47

9.6 Warranty .................................................................................................................................. 48

Rinnai Electric Heat Pump Water Heater Manual

This manual oers the installer essenal recommendaons and basic instrucons for correctly

installing and adjusng the water heater. It provides comprehensive informaon on the features,

operaon, safety precauons, maintenance, and troubleshoong procedures for the owner/

operator. Addionally, a replacement parts list is included in this manual.

It is imperave for the owner/operator to thoroughly read and comprehend the instrucons to

ensure procient adjustment and operaon of the water heater. If there is any diculty in

understanding the instrucons, it is advised to seek professional assistance.

For any inquiries regarding service, warranty, and maintenance maers not addressed in these

instrucons, please direct them to the seller from whom you purchased the product.

Thank you for purchasing a Rinnai Electric Heat Pump Water Heater. Before installing and

operang this water heater, please read these instrucons completely to familiarize yourself with

the water heater’s features and funconality.

Fill out this secon for your records.

Date Purchased:

Model number:

Serial number:

Check the rang plate label located on the front of water heater for model number and serial

number.

Proof of the original purchase date is needed to obtain service under the warranty.

Rinnai Electric Heat Pump Water Heater Manual

Idenfy the safety alert symbol,

recognizing it as a sign of

important safety informaon.

This symbol serves to alert you

to potenal hazards that pose a

risk of harm or injury to you and

others.

Indicates an imminently hazardous

situaon which, if not avoided, will result

in personal injury or death.

Indicates an imminently hazardous

situaon which, if not avoided, will result

in personal injury or death.

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.

Schedule an appointment with a trained

and qualied professional to install your

water heater.

Incorrect installaon, operaon, or service

can damage the water heater, your house

and other property, and present risks

including re, scalding, electric shock, and

explosion, causing serious injury or death.

Preventave care by owner can maximize

the life of the water heater. Please refer

to CARE & CLEANING secon and

TROUBLESHOOTING TIPS secon. This

may prevent you from making a service

call for your appliance.

WARNING

CAUTION

DANGER

All safety messages will follow the safety alert

symbol and either the word “DANGER”,

“WARNING”, “CAUTION” or “NOTICE”.

Aenon is called to observe a specied

procedure or maintain a specic

condion.

DANGER Scalding Risk

Priorize your safety and that of others. This

manual and your water heater contain

crucial safety messages. Adhere to all safety

instrucons.

Water temperatures

over 125° F (52° C)

can cause severe

burns or scalding

resulng in death.

HOT

BURN

Table 1

Temperature Time To Cause Serious Burns

120°F (49°C) More than 5 minutes

125°F (52°C) 1 1/2 to 2 minutes

130°F (54°C) About 30 seconds

135°F (57°C) About 10 seconds

140°F (60°C) Less than 5 seconds

145°F (63°C) Less than 3 seconds

150°F (65°C) About 1 1/2 seconds

155°F (68°C) About 1 second

Time/Temperature Relaonship in Scalds

NOTICE

Rinnai Electric Heat Pump Water Heater Manual

WARNING Liing Risk

As the owner/operator, it is essenal to

thoroughly read and adhere to the warning

instrucons provided on the label Figure 2,

which is also located on the water heater.

Figure 2

WARNING

Contact with the electrical

parts in the juncon box,

behind the juncon box cover

and behind electric heater

cover can result in severe

injury or death from the

electrical shock.

• Disconnect power by opening the circuit

breaker or removing the fuses before

installing or servicing.

• Use a non-contact circuit tester to

conrm that power is o before working

on or near any electrical parts.

• Replace the juncon box cover and

access doors aer servicing.

DANGER Electric Shock

The water heater is heavy.

Follow these precauons to

reduce the risk of property

damage, injuries from liing or

impact injuries from dropping

the water heater

• Use at least two people to li the water

heater.

• Be sure you both have a good grip before

liing.

• Unit is top heavy, use an appliance dolly

(with strap) to move the water heater.

Temperature

Seng

WARNING

• See the Figure 1 for the water default

temperature seng and refer to secon

6.2, page 25

in this manual for details on

adjusng it.

The water heater interface regulates the

temperature of the water. For safety

compliance, the temperature of the water

heater was factory preset at 120°F (49°C)

before it was shipped.

Figure 1

Mixing valves are recommended to lower

water temperature at specic points of use

by blending hot and cold water within

branch water lines.

NOTICE

• It is recommended to install a mixing

valve that meets the requirement in ASSE

1017, the Standard for Temperature

Actuated Mixing Valves for Hot Water

Distribuon Systems.

Warning Label

Scalding Label

Rinnai Electric Heat Pump Water Heater Manual

• NEVER block the outlet of the T&P valve

or its drain line for any reason. The T&P

valve MUST be operated at least every 6

months to remove lime deposits and

verify that it is not blocked. Failure to do

this may result in the water heater

failing.

• If the valve does not discharge water

when the easing gear is opened or does

not seal again when the easing gear is

closed, contact qualied and trained

professional to replace the valve. The

T&P valve is not serviceable, it MUST be

replaced.

WARNING

• DO NOT tamper with or remove safety

devices.

• DO NOT operate the water heater

unless all safety devices are ed and

in working order.

• DO NOT block or seal the T&P Valve

and drainpipe.

• DO NOT connect other plumbing to the

T&P plumbing; it must go directly to a

suitable open drain.

WARNING

To operate T&P valve, li

easing gear unl water ows

from drain line. (Lower gear

gently!)

• NEVER replace the T&P valve with one

which has a higher-pressure rang than is

specied for your water heater.

• The pressure rang of the relief valve

used must not exceed 150 PSI, the

maximum working pressure of the water

heater as marked on the rang plate.

WARNING

• For more detailed informaon, please

refer to Secon 9.2, page 42 for further

assistance, reach out to a licensed

plumber or your local plumbing

authority.

• In demand response applicaons, a

thermostac mixing valve in compliance

with ASSE 1017 must be placed on the

hot water supply line, following all

installaon instrucons provided by the

manufacturer.

Safety Devices

The water heang system is equipped with

temperature sensors, overheat sensors,

switches, Drain valve, and a Temperature &

Pressure Relief (T&P) valve. It is essenal that

these components are not tampered with or

removed. The operaon of the water heang

system should only occur when each of these

devices is correctly installed and funconing.

Temperature & Pressure Relief (T&P) Valve

Please note that this valve is located near the

top of the water heater close to hot water

outlet and is essenal for safe operaon. A

naonally recognized tesng laboratory

maintains periodic inspecon of the valve

producon process and ceres that it meets

the requirements for Relief Valves for Hot

Water Supply Systems, ANSI Z21.22.

WARNING

Prior to installing or operang the water

heater, thoroughly read and comprehend the

enre Manual. Taking the me to do so can

potenally save you both me and expenses.

Pay special aenon to the Safety

Instrucons outlined in the manual, as

neglecng these precauons could lead to

severe bodily harm or fatal consequences. If

you encounter dicules understanding the

instrucons or have any quesons, cease the

installaon or operaon, and seek assistance

from a qualied service technician or your

local electric ulity.

Easing gear

Rinnai Electric Heat Pump Water Heater Manual

• Remove and immediately recycle or dispose of used baeries according to local regulaons

and keep away from children. Do NOT dispose of baeries in household trash or incinerate.

• Even used baeries may cause severe injury or death.

• Call a local poison control center for treatment informaon.

• Baery type: CR2032

• Baery nominal voltage: 3.0V

• Non-rechargeable baeries are not to be recharged.

• Do not force discharge, recharge, disassemble, heat about 140°F (60°C) or incinerate. Doing

so may result in injury due to venng, leakage or explosion resulng in chemical burns.

• Ensure the baeries are installed correctly according to polarity (+ and -).

• Do not mix old and new baeries, dierent brands of baeries, such as alkaline, carbon-

zinc, or rechargeable baeries.

• Remove and immediately recycle or dispose of baeries from equipment not used for an

extended period of me according to local regulaons.

• Always completely secure the baery compartment. If the baery compartment does not

close securely, stop using product, remove the baeries, and keep them away from

children.

WARNING

Rinnai Electric Heat Pump Water Heater Manual

Refrigerant

The Water Heater comes pre-charged with an

environmentally friendly refrigerant, R134A,

which is free from chlorine. This refrigerant

has a zero-ozone depleon potenal.

2. Prior to installing or operang the water

heater, thoroughly review this manual.

3. Ulize this appliance solely for its

intended purpose as outlined in the

Manual.

4. Ensure that your appliance is correctly

installed in compliance with local codes

and the accompanying installaon

instrucons.

5. DO NOT aempt to repair or replace any

component of the water heater unless

explicitly recommended in this manual;

seek the assistance of a qualied

technician for all other servicing.

6. DO NOT aempt to repair or replace the

compressor, refrigerant, or any

component associated with the sealed

refrigerant system.

7. DO NOT acvate the electrical supply or

operate the water heater unless it is

enrely lled with water.

FLAMMABLE CONTENTS UNDER PRESSURE.

The compressor is a non-serviceable

component. Arcing of the compressor wiring

terminals could lead to the release of

pressurized refrigerant and oil, potenally

causing ignion and resulng in severe bodily

injury, severe burns, or even death.

WARNING

Before commencing maintenance, ensure

that all power to the unit is disconnected.

Neglecng to do so may lead to electrical

shock, causing signicant personal injury or

even death.

WARNING

1. Request the installer to demonstrate the

circuit breaker's locaon and how to switch

o the power if necessary. Switch o the

circuit breaker under circumstances such as

overheang, re, ooding, physical dam-

age, or if the TCO (thermal cut-o) fails to

deacvate.

Rinnai Electric Heat Pump Water Heater Manual

Illustrated in Figure 3, the sealed system within the apparatus is charged with refrigerant. This

refrigerant undergoes evaporaon at low temperatures, extracng heat from the surrounding air.

Within the evaporator, the refrigerant transions from a liquid to a gaseous state. Subsequently, a

compressor elevates the pressure and temperature of the gaseous refrigerant. The energy for

compression, sourced from electricity, is indirectly converted into heat and discharged to the

downstream microchannel (condenser). At this stage, the refrigerant indirectly imparts latent heat

to the water within the Domesc Hot Water (DHW) tank, experiencing a phase change back to a

liquid state. The liquid refrigerant is then directed to a lter dryer, followed by an expansion valve

that diminishes the prevailing pressure. The refrigerant is subsequently guided back to the

evaporator, iniang the cycle again.

Figure 3

The electric heat pump operates in a manner opposite to that of a refrigerator. It extracts heat from

the surrounding outside air and transfers it into the water, using electricity solely for system

operaon. This results in signicantly reduced energy consumpon compared to using an electric

element hot water system alone. The eciency of the heat pump system is enhanced in warmer

climates.

The heat pump unit features a highly ecient micro-channel heat exchanger wrapped around the

inner cylinder to opmize thermal conducvity. A temperature sensor in the tank regulates the

heat pump's operaon to achieve the desired water temperature.

During periods when ambient weather condions are unfavorable for the heat pump operaon or

during peak water demand, the electric element heater takes over to ensure a connuous supply of

hot water.

Rinnai Electric Heat Pump Water Heater Manual

Figure 5

Display

Condensate

Drain Pipe

CTA-2045

Port

Water

Outlet

T&P

Valve

Water

Inlet

Drain

Valve

Air Filter

The Rinnai Electric Heat Pump Water Heater

is designed for indoor installation only. The

appliance extracts heat from the ambient air

and provides it to the water in the DHW tank

with added electric power. The amount of

electric energy and time required to heat-up

the DHW depends on the temperature and

humidity of the ambient air.

Topics in this section

• Top View

• Front View

• Components

• General Specifications

• Included Items with Unit

• Accessories

Figure 4

Rinnai Electric Heat Pump Water Heater Manual

Listed below are descripons of heat pump components. Refer to the previous page for component

illustraon.

Item Name Descripon

Display

The appliance is equipped with 4.1” screen with user friendly

interface and touch panel controller to perform operaons.

Water Outlet Hot water outlet with 3/4” MNPT ng.

Water Inlet

Cold water in with 3/4” MNPT ng.

CTA2045 Port

CTA2045 compliant module can be connected to the water

heater through this port.

Drain Valve Provides easy access to drain the tank during maintenance.

T&P Valve

Automacally releases water when the pressure or temperature

in the tank exceeds safety levels.

Condensate Drain Pipe

A exible 5.2  long pipe provided with unit to drain condensate.

Air Filter Washable air lter lters and eliminates debris from entering.

Table 2

Table 3

Model REHP Series (for all models)

Total Unit Waage (Input)

5000 W

Installaon Type

Indoor

Power Supply

208 - 240 V

Electric Breaker Size

30 Amps

Maximum Current

21.5 Amps

Refrigerant Type

R134a

Refrigerant Circuit Max

Pressure

150 PSI (1034 KPa)

Operang Ambient Temp.

for Heat Pump

37~108°F (3~42°C)

Operang Ambient Temp.

for Heang Element

5~115°F (-15~46°C)

Ingress Protecon

IP21

Hot Outlet and Cold Inlet

Water Connecons

3/4” MNPT

Condensate Drain

Connecon

3/4” Male Barb Fing

Temp & Pressure Valve

Pressure Rang

150 PSI (1034 KPa)

Temp & Pressure Valve

Temperature Rang

210°F (99°C)

Cercaons

NEEA, AHRI, ANSI, and UL

Energy Star Cered

Yes

Warranty

Tank & All Other Parts & Components: 10 Years.

Reasonable Labor: 1 Year. See Secon 9.6, page 48

for Complete Details

*Refer to

800000224

(Electric

Heater Pump

Water Heater

Specicaon

Sheet) for

detailed

specicaons

and unit

dimensions.

Rinnai Electric Heat Pump Water Heater Manual

Carefully unpack your water heater and verify the following items are included/preinstalled. If any

items are damaged or missing, contact your local dealer/distributor. Do not aempt to use any

item that appears damaged.

• Installaon and Operaon Manual

(this manual)

DOCUMENTATION

T&P VALVE

PART #: 107000677

Figure 6

DRAIN VALVE

PART #: 107000678

DRAINAGE PIPE

PART #: 107000674

The following oponal accessories are available for the Rinnai Electric Heat Pump Water Heater.

EHPWH DUCTING KIT

PART #: 103000120

Figure 7

EHPWH LEAK KIT

PART #: 103000119

Rinnai Electric Heat Pump Water Heater Manual

Insucient venlaon in conned spaces

during installaon may result in higher power

consumpon for the unit. It is advisable to

install the water heater in locaons where

ambient temperature is more than 37.4°F (3°C)

and less than 107.6°F (42°C).

NOTICE

Installaon of this water heater must adhere

to these instrucons, local codes, ulity

codes, and ulity company requirements. In

the absence of local codes, compliance with

the latest edion of the Naonal Electrical

Code is mandatory. This code can be

obtained from various local libraries or

purchased from the Naonal Fire Protecon

Associaon at Baery March Park, Quincy,

MA 02269, in the form of the ANSI/NFPA 70

booklet.

For Canadian installaons, reference to

CSA22.1. A copy can be acquired from the

Canadian Standards Associaon at 5050

Spectrum Way, Mississauga, ONT L4W 5N6.

Locaon

Idenfy a clean, dry locaon for your water

heater and posion it as close as possible to

the area with the highest demand for heated

water. It's important to note that extended,

uninsulated hot water lines can result in

energy and water wastage. Ensure that the

water heater is situated in a way that allows

easy removal of the heang element cover

for inspecon and servicing, such as element

removal or control checks. Protect the water

heater and water lines from freezing

temperatures; avoid installing the water

heater in outdoor, unprotected areas. Verify

that the oor beneath the water heater is

robust enough to support the weight of the

lled water heater.

CAUTION

The water heater should not be located in an

area where leakage of the tank or

connecons will result in damage to the area

adjacent to it or to lower oors of the

structure. Where such areas cannot be

avoided, it is recommended that a suitable

drain pan, adequately drained, be installed

under the water heater.

Table 4

Figure 8

Wall

Front

Side

Top View

Locaon Addional Clearance

Top 0 in.

Recommended clearance

for opmal eciency &

servicing is 20 in. (508mm)

on the top

Back 0 in.

Le Side 6 in. (152 mm)

Recommended clearance

for servicing is 12 in. (305

mm) on the sides

Right Side 2 in. (51 mm)

Recommended clearance

for servicing is 12 in. (305

mm) on the sides

If addional clearances are not met, damage to

the property and water heater may occur.

CAUTION

Rinnai Electric Heat Pump Water Heater Manual

Figure 9

Figure 10

Front View

If air temperature in installed locaon drops

more than 15°F (8°C) during heang, air

circulaon is insucient for ecient

operaon.

NOTICE

No Addional Venlaon Needed:

For room size: Larger than 700 

(i.e. 7’ X 10’

X 10’). Illustrated in Figure 10.

Addional Venlaon Needed:

For room size: Smaller than 700 

(i.e. 7’ X 10’

X 10’). Full louvered door required as shown in

Figure 9.

Laundry room or similar:

• 24 in

of air gap should be provided under

the door for inlet air.

• Louver on the door must be located as the

same height of air exhaust on the water

heater.

• Water heater air exhaust must be posi-

oned towards louver side within 12 inch

from the door as shown in Figure 11.

Door

Top View

Figure 11

Front View

12” Max.

For installaon in a room smaller than 700



, fully louvered door or ducng should be

installed for ecient operaon.

NOTICE

Rinnai Electric Heat Pump Water Heater Manual

• Arrive at site and conduct a safety audit. Safety audits can also be known as Work Method

Statements (WMS) or Job Site Analysis (JSA).

• Park your vehicle as close as allowable to your installaon. Unload all materials in a safe

manner.

• Posion all materials in a convenient posion near the work area.

• This heat pump water heater MUST be installed indoors.

• Adequate access MUST be available to the T&P valve and an anode rod.

• Safely posion the new unit on a level surface in accordance with all plumbing and building

regulaons.

• A suitable drain pan (Figure 13) MUST be used with EHPWH leak kit (sold separately) where

property damage could occur from water spillage.

Examine the water heater for damage and verify that the power supply matches the unit's

requirements, as indicated on the rang plate (Figure 12) located on the front of the water heater.

Figure 13

B - Maximum 2”

A - Diameter of water

heater plus 4” min.

The drain line

should be at

least 3/4” ID

and pitched

for proper

drainage.

Figure 12

NOTICE

The auxiliary drain pan installaon MUST conform to local codes. Drain Pan Kits are available

from the store where the water heater was purchased, or any water heater distribuon. The

Drain Pan should not block the cold inlet or the drain valve. Ensure the oor beneath the water

heater can support its lled weight adequately.

Rinnai Electric Heat Pump Water Heater Manual

Please consult the illustraon on Figure 12 for a recommended standard installaon. It is

advisable to use exible connectors for the hot and cold-water connecons. These connectors

oer vibraon isolaon and facilitate easy service of the water heater, if required.

The HOT and COLD water connecons are disnctly labeled and measure 3/4” MNPT on all

models. It is recommended to install a shut-o valve in the cold-water line near the water heater.

Refer to Secon 5.11, page 20 for instrucons on how to ll the water heater.

Verify the presence of a check valve in the incoming water line by consulng your local water

ulity. It might be installed independently as a backow preventer in the cold-water line or

integrated into a pressure reducing valve, water meter, or water soener. A check valve in the

cold-water inlet line can establish a "closed water system," while the absence of such a valve or

backow prevenon device characterizes an "open" water system.

When water is heated, it undergoes thermal expansion, increasing pressure in the water system. In

an "open" water system, excess expanded water returns to the city main, where pressure is easily

dissipated. Conversely, a "closed water system" inhibits expanded water from owing back into the

main supply line, leading to a swi and hazardous pressure rise in the water heater and system

piping. This rapid pressure increase may trigger the T&P valve at each heang cycle.

The connuous expansion and contracon due to thermal expansion can prematurely damage the

T&P valve and potenally the heater itself. Simply replacing the T&P valve will not resolve the

issue. To control thermal expansion, it is recommended to install a correctly sized expansion tank

in the cold-water line between the water heater and the check valve. The expansion tank has an

integrated air cushion that compresses with rising system pressure, alleviang overpressure

condions and prevenng repeated relief valve acvaon. Alternave methods for managing

thermal expansion exist; consult your installaon contractor, water supplier, or plumbing inspector

for more informaon on this maer.

NOTICE

DO NOT apply heat to the HOT or COLD water connecons. If sweat connecons are employed,

sweat the tubing to the adapter before ng the adapter to the water connecons on the heater.

Any heat applied to the water supply ngs will result in permanent damage to the dip tube and/

or heat traps.

NOTICE

• Operang temperature range of cold (inlet) water is 48°F (9°C) to 110°F (43°C).

• Operang pressure range is 43.5 psi (300 kPa) to 150 psi (1034 kPa).

• Water ow rate should be from 0.88 gpm (0.2 m

/h) to 3.08 gpm (0.7 m

/h).

CAUTION

This appliance must be permanently connected to the water mains. Hose-sets must not be used as

water supply connecons.

Rinnai Electric Heat Pump Water Heater Manual

Please check local codes or ordinances for precise specicaons.

IMPORTANT: When making drain ng connecons to the drain tubing, use a clamp to secure.

IMPORTANT: Avoid overghtening when making drain ng connecons to the drain tubing, as it

may lead to product damage and leaks.

• Flexible drainage pipe with a clamp is provided with the unit.

• Drainage connecon is built-in with the unit.

• DO NOT reduce drain line size less than connecon size provided on condensate

drain.

• All drain lines must be pitched downward away from the unit a minimum of 1/8” per

foot of line to ensure proper drainage.

• Drain lines must include a P-trap if connected to a sewer pipe.

•

If no drain is available, then a common condensate pump with a capacity of no

less than 2 gallon per day must be installed.

• DO NOT allow condensate to drain into the water heater drain pan.

•

The drain line should be insulated where necessary to prevent sweang and

damage due to condensate forming on the outside surface of the line.

NOTICE

The condensate produced by this unit is non-acidic and does not require a condensate neutralizer.

Figure 14

Clamp

(Provided)

Flexible

Drainage

Pipe

(Provided)

Drainage

Connecon

Rinnai Electric Heat Pump Water Heater Manual

Figure 15

Hot Water Outlet to

xtures (eld supplied)

(Flexible Connecon

recommended)

Air lter (pre-installed)

6 in. (152 mm)

Clearance for servicing is 24

in. (610mm) on the top

6” Air gap

Cold Water Supply

(eld supplied)

(Flexible Connecon

recommended)

Drain Valve

(pre-installed)

Thermal Expansion

Tank (eld supplied)

T&P Valve

(pre-

installed)

Flexible

Condensate

drain piping

for easy

access for

maintenance

(provided)

To Drain

Heang Element Cover

(pre-installed)

Figure 15 illustrates the recommended typical installaon of water heater.

• A newly installed temperature and pressure relief (T&P) valve, meeng the standards outlined

in ANSI Z21.22/CSA 4.4 for Relief Valves in Hot Water Supply Systems, is factory-installed. It

must remain in the designated opening, clearly marked for this purpose, on the water heater.

No valves of any kind should be placed between the relief valve and the tank.

• The T&P discharge piping must be of a type approved for hot water distribuon. The discharge

pipe must be no smaller than the outlet of the T&P valve and must pitch downward from the

valve to allow complete drainage (by gravity) of the relief valve and discharge pipe. The end of

the discharge pipe should not be threaded or concealed and should be protected from

freezing. No valve of any type, restricon or reducer coupling should be installed in the

discharge piping.

Rinnai Electric Heat Pump Water Heater Manual

The pressure rang of the relief valve must not exceed 150 PSI, the maximum working pressure of

the water heater as marked on the rang place.

WARNING

Ensure the drain valve on the water heater is fully closed. Proceed to open the shut-o valve in the

cold-water supply line.

Gradually open each hot water faucet to enable the release of air from the water heater and

piping.

If there is a connuous and steady ow of water from the hot water faucet(s), it indicates that the

water heater is enrely lled.

WARNING

Failure to adhere to the instrucons outlined in this manual may result in permanent damage to

the unit and could void the manufacturer's warranty.

WARNING

DO NOT acvate the electrical supply or operate this water heater unless it is enrely lled with

water. The water heater must be lled with water before being turned on. Please note that the

water heater warranty does not cover damage or failure resulng from operaon with an empty

or parally empty tank

WARNING

DO NOT link any other plumbing to the T&P plumbing; it must be directly connected to a

suitable open drain. DO NOT join the T&P plumbing with the condensate plumbing.

WARNING

Prior to making any electrical connecons, be sure to turn o the electric power at the fuse box

or service panel. Addionally, ensure that the ground connecon is established before

proceeding with line voltage connecons. Neglecng to follow these steps can lead to electrical

shock, resulng in severe personal injury or death.

Before commencing maintenance, it is crucial to disconnect all power to the unit. Failure to do

so can result in electrical shock, leading to severe personal injury or death. Addionally, ensure

that the unit is grounded, as failure to do so can also cause electrical shock, resulng in severe

personal injury or death.

DO NOT operate the water heater again if it has been exposed to re, ood, or physical damage,

unl it has been inspected by a qualied service technician.

Rinnai Electric Heat Pump Water Heater Manual

NOTICE

DO NOT use this appliance if any part has been submerged in water. Contact a qualied installer

or service agency promptly to replace the water heater that has been exposed to ooding. DO

NOT aempt to repair the unit! It must be replaced.

A qualied electrician must establish a separate branch circuit equipped with copper conductors,

an overcurrent protecve device, and appropriate disconnecng means. All wiring must adhere to

local codes or the latest edion of the Naonal Electrical Code ANSI/NFPA 70.

The water heater is fully connected to the juncon box located inside the jacket at the top front of

the unit. A knockout is provided on juncon box cover for electrical ng is available for eld

wiring connecons. The voltage requirements and waage load for the water heater are detailed

on the rang plate situated on the front of the unit.

Grounding instrucon:

1. Ulize metallic conduit or metallic sheathed cable approved for use as a grounding conductor,

installed with ngs approved for this purpose.

2. If non-metallic sheathed cable, metallic conduit, or metallic sheathed cable not approved for

use as a ground conductor is employed, it must incorporate a separate conductor for

grounding. This grounding conductor should be connected to the ground terminals of both

the water heater and the electrical distribuon box.

3. The unit must be installed with a circuit breaker (including GFCI type) near the power supply

and must be eecvely earthed.

4. For wiring diagram, refer to Secon 9.5, page 47.

Step to make Electrical Connecon:

1. Locate the terminal block on top right side on water heater behind the juncon box cover.

2. If CTA-2045 module is installed, remove the module to gain access of juncon box cover.

3. Remove 3 screws to disassemble the juncon box cover as shown in Figure 16.

4. Juncon box comes with a 7/16” knockout to pass conduit cable through it.

5. As shown in Figure 17, connect Line 1 (L1), Line 2 (L2) and ground wire on the terminal block.

6. Mount back the juncon box cover.

Juncon Box Access

Juncon

Box Cover

Conduit

Connector

Figure 16

3 X Screws

CTA-2045

Module

(Not supplied)

Rinnai Electric Heat Pump Water Heater Manual

CAUTION

Table 5

Grounding

Screw

L1 Wire

Connecon

(Black)

Figure 17

WARNING

The water heater and water pipes are not enough for eecve grounding. Components like non-

metallic piping, dielectric unions, and exible connectors may electrically isolate the water

heater.

NOTICE

This guide suggests the minimum branch circuit sizing and wire size in accordance with the

Naonal Electric Code. Please consult the wiring diagrams provided in this manual for details on

eld wiring connecons.

Branch Circuit Sizing and Wire Size Guide - Single Phase Wiring

Total Water Heater

Waage

Recommended Over

Current Protecon (Fuse or

Circuit Breaker Amperage

Rang)

Copper Wire Size

AWG Based on NE.C

Table 310-16 (75°C)

240V 240V

2250 15 14

2750 15 14

3000 20 12

4000 25 10

5000 30 10

5500 30 10

NOTE: When sizing the breaker and wire for over current protecon, include an addional 500W to

the upper element waage rang. This will account for the maximum amperage draw of the

compressor and fan motor.

Ground Wire

Connecon

(Green/Yellow)

L2 Wire

Connecon

(Red)

Juncon Box Details

Rinnai Electric Heat Pump Water Heater Manual

Figure 18

If local codes require external applicaon of insulaon blanket kits the, manufacturer’s

instrucons included with the kit must be carefully followed.

WARNING

Insulaon blankets designed for external use on electric water heaters, which are readily available

to the general public, are not deemed necessary. The primary funcon of an insulaon blanket is

to minimize standby heat loss commonly associated with storage tank heaters. In the case of this

water heater, it either meets or exceeds the insulaon and standby loss requirements outlined by

the Naonal Appliance Energy Conservaon Act standards, rendering the use of an insulaon

blanket unnecessary.

It is important to note that the manufacturer's warranty does not cover any damage or defects

resulng from the installaon, aachment, or use of any energy-saving or other unapproved

devices - excluding those explicitly authorized by the manufacturer - incorporated into, onto, or in

conjuncon with the water heater. The ulizaon of unauthorized energy-saving devices may

compromise the lifespan of the water heater and pose risks to life and property. The manufacturer

explicitly disclaims any responsibility for losses or injuries resulng from the use of such

unauthorized devices.

If local codes mandate the use of an external insulaon blanket for this water heater, it is essenal

to meculously observe the following guidelines to avoid impeding the proper funcon and

operaon of the water heater.

CAUTION

• DO NOT obstruct or cover the operang or warning labels axed to the water heater.

• DO NOT aempt to reposion any labels on the exterior of the insulaon blanket.

• DO NOT block the air openings on top and le side of the water heater.

• DO NOT conceal the Controller Assembly, T&P valve, or drain valve.

• Frequently inspect the insulaon blanket.

Display &

Controller

Air Outlet

Opening

Horizontal Air Fil-

ter (20” Clearance

recommended on

top)

Rinnai Electric Heat Pump Water Heater Manual

Figure 19

Insulated Hot and Cold

Water Piping

(Flexible Connecon

recommended)

Install pipe insulaon on the cold water supply inlet and the hot water outlet as shown in Figure

19.

Please refer a separate instrucons provided with EHPWH Ducng Kit - 103000120 (Accessory)

for all ducng requirements.

DO NOT skip the ducng requirement document if any kind of ducng is installed. Ducng

installaon must follow all ducng requirements as menoned in the separate instrucons.

NOTICE

Rinnai Electric Heat Pump Water Heater Manual

CAUTION

Hydrogen gas has the potenal to accumulate in a hot water system when the water heater has

remained unused for an extended period, typically two weeks or more. It's crucial to be aware

that HYDROGEN GAS IS EXTREMELY FLAMMABLE!

To migate the risk of injury and disperse any accumulated gas, it is strongly recommended to

open the hot water faucet at the kitchen sink for several minutes before using any electrical

appliances connected to the hot water system. If hydrogen is present, you may hear an unusual

sound resembling air escaping through the pipes as the water begins to ow. It is imperave

that during this process, NO smoking or open ames are allowed near the open faucet. Exercise

cauon and priorize safety.

Safety Precauons

• If the water heater has been exposed to overheang, re, ood, or physical damage, ensure all

power is disconnected.

• DO NOT aempt to turn on the water heater unless it is properly lled with water.

• DO NOT acvate the water heater if the shut-o valve for the cold water supply is closed.

• In case of challenges comprehending or adhering to the Operang Instrucons or the Care and

Cleaning secon, it is advisable to seek the assistance of a qualied individual or service

technician.

If the water heater has been subjected to re, ood or physical damage, disconnect all power to

water heater, and DO NOT operate the water heater again unl it has been checked by a qualied

service technician.

WARNING

DO NOT use this appliance if any part has been submerged in water. Contact a qualied installer

or service agency promptly to replace the water heater that has been exposed to ooding. DO

NOT aempt to repair the unit! It must be replaced.

NOTICE

Safety Controls

The water heater features a thermal cut-o (TCO) posioned near the upper heang element,

making contact with the tank surface. If the water temperature becomes too high, the TCO

interrupts the power supply to the heang element. Aer acvaon, it requires manual

reseng. Refer Secon 9.4, page 46 for reseng instrucons.

A qualied service technician must invesgate the cause of high-temperature and take correcve

acons before pung the water heater back into operaon.

CAUTION

Rinnai Electric Heat Pump Water Heater Manual

DANGER

Seng the thermostat too high can create a scalding risk. Homes with young children, the elderly,

or individuals with disabilies may need to set the thermostat to 120°F (49°C) or lower to avoid

exposure to hot water.

Water Temperature Seng

Regulate your water heater's temperature through the control display, keeping safety and energy

savings in mind. Lower sengs reduce energy costs. For safety, the factory default is 120°F (49°C),

which is the recommended starng point. Temperatures above 125°F (52°C) can cause severe

burns. Always follow the manual and label warnings on the front of the heater.

Consider installing mixing valves to blend hot and cold water for safer point-of-use temperatures,

following ASSE 1017 standards. For demand response, use ASSE 1017-compliant thermostac

mixing valves on the hot water supply line, per manufacturer instrucons. Refer Table 1, page 5 to

determine the right water temperature for your home.

• The primary funcon of the control panel is to allow user to set temperature. Addionally, it

provides access to extra features like seng up schedule, check performance data, show

error codes, update engineering channels etc.

• The water heater has three means of heang the water: the elements, the heat pump, and a

combinaon of the elements and heat pump.

• The control logic of the Control Assembly is designed so that the heat pump always has

priority over the elements. The temperature regulaon will not be performed unl aer Dry-

Fire detecon tesng indicates that there is sucient water in the tank.

• Refer table 6 and 7 to understand display icons and available operaons on this appliance.

The heat pump’s fan will not turn on if the incoming water temperature is less than 39°F (4°C)

and/or the ambient air temperature is above 107.6°F (42°C), or below 37.4°F (3°C). The

internal diagnoscs detects that the heat pump is out of operaonal range.

NOTICE

Rinnai Electric Heat Pump Water Heater Manual

Operaon

Display

Figure 21

2 3

Figure 20

shown in Figure 20, control panel is located on top side on water heater.

Figure 21 shows all the available icons on the display. Refer Table 6 for detailed explanaon of

each icon.

Rinnai Electric Heat Pump Water Heater Manual

No Icon Descripon

•

Normally, it shows tank water temperature.

•

When “ ” or “ ” arrows pressed, it shows set temperature .

( “Set Temperature” on top side lights up)

•

On VACATION mode, it shows remaining days of vacaon modes.

•

It shows seng temperature on seng.

•

It shows unit seng/running parameters or error/protecon code

on performance data.

Time and clock seng

•

shows the clock.

•

Whenever there is any seng for clock, SET TIME will be lightened.

• There are daily or weekly TIMER icon.

• If anyone of them has been set, either “ ” or “ ” shows up.

• It remains empty if none of the mer is set.

• While seng up a mer, the corresponding icon ashes every 2

seconds to indicate it has been selected.

VACATION MODE:

When set to VACATION mode, the water tank is set at 59°F (15°C), maintains

low tank water temperature, preheats hot water and an-freeze lines, while

reducing on/o operaon of the tank.

HYBRID MODE:

Operang in HYBRID mode, the electric heater and heat pump run together to

fulll hot water demand.

Table 6

E-HEATER MODE:

When set to E-HEATER mode, only electric heater runs and provides hot

water.

ECONOMY MODE: (Default)

When set to ECONOMY mode, the heat pump and electric heater run together

with higher priority to heat pump to fulll hot water demand. Electric heater

turns on only when the hot water demand gets extremely high.

It is recommended to use this mode to maximize electricity cost savings.

HEAT PUMP MODE:

When set to HEAT PUMP mode, only heat pump will run to provide hot water.

Indicates when child lock funcon is enable. Locks all operaonal buons.

Protecon/Error:

It lights up when the appliance is under protecon/error.

Maintenance Reminder:

It ashes to remind the user to maintain the water tank.

High temp. Alert:

If water temp is higher than 122°F (50°C), it lights up.

Self Cleaning Alert:

It lights up when the tank is self-cleaning.

Rinnai Electric Heat Pump Water Heater Manual

It lights up when element heater is running.

NOTE: When the operang condions are not met to turn on this funcon,

the corresponding icon on the wire controller lights up briey and then

goes out.

Heat Pump Icon:

When the heat pump is operang and producing hot water, the icon lights up.

Clock Icon: The icon lights up when the clock is being set.

DR Icon:

• When the DR funcon is enabled, the icon remains on.

• Aer the DR funcon is enabled, if a general power limit request, basic load

request, advanced load request, or emergency power limit request is received,

the icon will ash slowly; When receiving an emergency power

ashes quickly.

It ashes 3 mes when any input is invalid.

Any pressing of buon is eecve

only under buon and display in

unlocked state. (refer child lock

funcon to unlock buon/display

as shown in Table 8)

Figure 22

20 21

25 26 27

28 29

Figure 22 shows all the available buons on the controller. Refer Table 7 for detailed explanaon

of each buon. All buons are touch sensive. It is recommended not to hard press buons to

maintain the long lifespan of controller.

Table 7

No Icon Descripon

Change Mode of Operaon

Default ECONOMY mode

Switch to HEAT PUMP mode

Adjust vacaon days (1-360 days)

Switch to HYBRID mode

Switch to E-HEATER mode

Switch to ECONOMY mode

*If the mode is

changed to E-heater,

within 72 hours, it will

automacally change

back to ECONOMY

mode (when 72 hours

is the power on me)

Switch to VACATION mode

Rinnai Electric Heat Pump Water Heater Manual

Demand Response

INCREASE AND DECREASE (UP/DOWN)

If screen is unlocked, corresponding value increases by pressing the buon.

•

When adjusng set temperature, press more than 1s, temperature value increases

connuously.

•

When seng clock/mer, press more than 1s, clock/mer value increases

connuously.

•

When seng vacaon days, press more than 1s, day value increases connuously.

DAILY SCHEDULE

1) Press the TIMER buon unl the day mer icon turns on, press the

conrmaon buon to enter the day mer seng, the day mer has a total of

6 me periods, each me period can be set to mer on, mer o, mode, set the

temperature of the water; to the rst mer period, set the temperature of the

water, press the conrmaon buon to enter the next me period of the set;

when set the sixth me period set the temperature of the water, press the

conrmaon buon to return to the main interface; during this period, you

can press the return buon Return to the previous seng

2) When seng the on me and o me, press the delete buon , the me can be

restored to the default value, and displaying ( -. --).

3) If there is a conict between the set me periods, the previous me period stays

valid, and the entered me period becomes invalid me period; the invalid me

period restores the default seng.

WEEKLY SCHEDULE

1) Press the TIMER buon unl the weekly mer icon turns on, press the

conrmaon buon to enter the weekly mer seng interface, weekly mer

is a total of 7 days, there are 6 me slots can be set each day, each me slot can

be set to mer on, mer o, the mode, set the water temperature; when the rst

me slot set the water temperature, press the conrmaon buon to enter

the next me slot sengs; when the sixth me slot set the temperature, press

the conrmaon buon to return to weekly. Aer seng the water

temperature for the 6th period, press the conrmaon key to return to the

selecon of week; during this period, you can press the return key to return to

the previous level of seng or the main interface;

2) When seng the on me and o me, press the delete buon to restore the

me, mode and set water temperature to default value, and displaying (-. --).

3) If you adjust the ming aer the seng is completed, then all the sengs aer

the adjustment me period gets canceled. For example, if you adjust the mer

on for me period 2, the mer o for me period 2, and the sengs for me

periods 3, 4, 5, and 6 get canceled to (---) aer adjustment. Mode and seng

water temperature become default values (ECONOMY, 120°F (49°C))

4) In the weekly mer seng, use the copy buon , you can locate the seng of

a certain day to the base day, select other days, press the copy buon, the fast

ashing indicates “selected” and the slow indicates “not selected”, aer pressing

on the conrmaon buon , you can copy the seng of the base day to the

selected day;

*You can enter the mer seng in both power-on and power-o state.

When the DR icon goes out, the DR funcon is not turned on.

Click this buon to turn on the DR funcon.

Aer the DR funcon is enabled, if a general power limit

request, basic load request, advanced load request, or

emergency power limit request is received, the icon will ash

slowly, when receiving an emergency power outage request,

the icon ashes quickly.

If you need to turn o the DR funcon, you need to click the

DR buon again while the DR is on and the device is on, and

the DR icon will turn o.

Rinnai Electric Heat Pump Water Heater Manual

COPY

It is used to copy selecon and paste in combinaon with other buons to

complete the funcon.

Power on/o buon

Press the buon to turn the device on or o. Small red led indicated if the device is

on/o.

Performance Data

1) In the main interface, press “ ” to enter the performance data funcon, and

use the up and down keys to switch the performance data channel, and the

aribute value of the channel will be displayed when switching to the channel.

Refer table 12 for more details.

2) Aer 30 seconds from the last operaon of the up and down keys, or by pressing

the return key or the on/o key, you can directly exit the performance data.

3) Performance data mode can be entered in both power-on and power-o state.

Engineering Mode

1) In the main interface, press and hold “ ” for 3 seconds to enter the

engineering mode; use the up and down keys to switch the engineering channel,

and the aribute value of the channel is displayed when switching to the

channel. By up and down key, you can modify a parameter seng, aer seng

and adjusng, press conrm key to return to the main interface to make the

seng eecve (channel 2, 3, 4, 34, 35 will be eecve immediately). Press the

Return buon to return to the previous interface (channel selecon interface).

Aer 30 seconds from the last operaon of the up and down buons, or by

pressing the return buon or the on/o buon, you can directly exit the

engineering mode. Refer table 10 for more details.

2) Engineering mode can be accessed in both power-on and power-o state.

NOTICE:

In order to prevent compromising the unit's regular funconing, it is strictly

forbidden for the customer to change the parameter of any/all engineering channels

without authorizaon.

E-Heater

Press the buon to turn the e-heater on instantaneously.

Delete

It is used to restore mer to default values and can be used to delete other selected

data.

Return

It is used to return to previous seng/screen.

CONFIRM/UNLOCK

If screen and buons are unlocked, press it to upload seng parameters aer

adjusng any parameter.

Rinnai Electric Heat Pump Water Heater Manual

No Icon

Descripon

Seng the

Date and

Clock

1) In the main interface, press and hold the mer buon for 3 seconds

to enter the date seng, press the up/down buon to select the

date, press the conrmaon buon to enter the clock seng,

press the up/down buon to modify the me, and press and hold to

accelerate the increase/de- crease of the me. Aer seng the

clock, press the conrm buon to return to the main interface to

complete the seng of date and me.

2) Aer 30 seconds from the last operaon of the up/down buon or

pressing the return buon or the power on/o buon, you can

directly exit the date and me seng;

3) Seng can be done in both

Child lock

funcon

1) In the main interface, long press the key combinaon for 2 seconds

to enter the child lock state;

2) In the state of child lock, long press the key combinaon again for 2

seconds to release the child lock state;

3) In the locked state, there will be an icon next to the water

temperature display.

Press for

2 sec

+ +

Table 8

Table 9

Mode Eciency Recovery

Vacaon

N/A N/A

Hybrid

Low High

E-Heater

Very Low Very High

Economy

(Default)

High Low

Heat-Pump

Very High Very Low

Figure 22

Press the “ ” buon to change operang mode on the unit (refer Figure 22).

Operaon Modes:

• ECONOMY (Default)

• HEAT-PUMP

• VACATION

• HYBRID

• E-HEATER

Rinnai Electric Heat Pump Water Heater Manual

Table 10

Engineering

Channel 1

Unit Temperature

0: °F (Default)

1: °C

Engineering

Channel 2

Maintenance Reminder

0：o

1：on (Default)

Engineering

Channel 3

Maintenance Time Seng

Default value： 365 days

(It can be set between 30 ~365 days)

Engineering

Channel 4

Maintenance Time Reset

0：Do not clear (Default)

1：Clean up (Resets the maintenance me to preset

days) (clears the icon from display)

Engineering

Channel 5

Clear Error Code

0: Default

1: Clear Error Code (Mainly used to clear error code

PhdH)

NOTE: DO NOT clear error without taking prevenve

acons rst.

Engineering

Channel 6

Electric Heater Switch

0: O (Permanently turns o electric heater)

1: On (Default)

Engineering

Channel 7

Automac Self Cleaning

Switch

0: O (Default) (Permanently turns o automac

self cleaning funcon)

1: On

Engineering

Channel 9

Set Self Cleaning Hours

Default value: 10 hours

(It can be set between 0~23 hours)

Engineering

Channel 11

Set Vacaon Temperature

Default value: 15°C

(It can be set between 15~20° C)

Engineering

Channel 14

N/A

Default value:

COO

NOTICE: DO NOT change the default seng.

Engineering

Channel 15

Dry Fire Protecon Switch

0: Invalid (Permanently turns o dry re protecon

funcon)

1: Valid (default)

NOTICE: DO NOT change the default seng unless

used for troubleshoong.

Engineering

Channel 16

Current Detecon Switch

0: Invalid (Permanently turns o current detecon

funcon)

1: Valid (default)

NOTICE: DO NOT change the default seng unless

used for troubleshoong.

3 Seconds

Figure 23

To enter the engineering channel mode:

Press and hold the “ ” buon for 3 seconds

on the main interface.

Select engineering channel, press the “ ”

buon to enter, and switch between valid

values using the “ ” and “ ” buons

(Refer Figure 23).

Rinnai Electric Heat Pump Water Heater Manual

Engineering

Channel 17

Set Self Cleaning

Temperature

Default value: 65°C

(It can be set between 65 ~ 70°C)

Engineering

Channel 18

Higher Set Temperature

Default value: 65°C

(It can be set between 65 ~ 70°C)

Engineering

Channel 21

Set 485 Communicaon

Address

Default value: 1

(It can be set between 1 ~ 20)

Engineering

Channel 23

Reset All Channels

0：o (Default)

1：on (Valid only once) (resets all engineering

channels to default)

Engineering

Channel 26

Set Self Cleaning Minutes

Default value: 0 minutes

(It can be set between 0~59 minutes)

Engineering

Channel 27

N/A

Default value:

NOTICE: DO NOT change the default seng.

Engineering

Channel 30

Backlight

0：o (Backlight stays always on)

1：on (Backlight turn on only when buon pressed)

(Default)

Engineering

Channel 34

Alarm Sound Disable

0：o (Default) (beeps when audible error code

occurs)

1：on (turns o audible sound of error code)

NOTICE: ALWAYS set channel back to default aer

taking correcve acons.

Engineering

Channel 35

Automac Child Lock

0：o (Default)

1：on (Locks buon aer 1 minute of no use)

Engineering

Channel 38

Shut-O Valve Seng

0：o (Default)

1：on

NOTICE: Must set to “ON” when leak kit

(103000119) is installed.

Engineering

Channel 39

Self Cleaning

0：o (Default)

1：on (Valid only once) (heats up tank water to 150°F

(65°C))

Engineering

Channel 40

Duct Seng

0：o (No Duct installed) (default)

1：on (Duct installed)

NOTICE: Must set to “ON” when duct kit

(103000120) is installed.

Rinnai Electric Heat Pump Water Heater Manual

To avoid scalding risks, ensure that no one

is exposed to hot water when manually

operang the relief valve. Release the water

into an appropriate drain to avoid injuries

or property damage.

DANGER

Thermal expansion in a closed loop water

system can cause the temperature and

pressure relief valve on the water heater to

discharge periodically.

Consult your water heater supplier or a

qualied plumber to correct it. DO NOT

block the relief valve outlet.

NOTICE

Regular maintenance ensures your water

heater's long, trouble-free operaon. This ap-

pliance has a maintenance reminder. Default is

365 days. When the maintenance me is due,

display shows icon. Establish and follow a

maintenance roune. Refer table 10 to reset

maintenance mer once compleng all check-

ups/clean ups.

Note that most electrical appliances, including

new ones, produce some operaonal noise. If

you noce an excessive increase in noise levels,

contact a qualied installer or plumbing

contractor for inspecon.

When water-using appliances with solenoid

valves close rapidly, it may cause a hammering

eect / noise in the water pipes. To minimize

this issue, you can use strategically placed ris-

ers in the water pipe system or employ water

hammer arresng devices.

IMPORTANT: Li and release the lever handle

on the T&P valve, located on the side of the

water heater, at least once a year to conrm its

Turn o the water heater's power before

beginning to drain water.

CAUTION

Ensure safety by conrming that nobody is

in the vicinity of the hot water discharge

when using the drain valve. The water from

the tank could cause scalding, so direct it to

a proper drain to prevent harm or damage.

DANGER

Sediments suspended in water can

accumulate at the boom of a water heater's

tank, oen due to hard water. To prevent

this buildup, it's recommended to drain a few

quarts of water from the tank every month.

To drain the water heater, rst shut-o the

cold-water supply. Then, either open a hot

water faucet or li the relief valve easing

gear to let air into the tank. You must rst

aach the garden hose. Then close cold

supply, and open hot faucet/T&P valve, then

open drain valve.

Figure 24

Drain

Valve

Check if the resistance across element heater

is 15 Ohms ± 10 Ohms. If resistance is out of

range, replace the element heater. Refer table

14 to order element heater replacement part.

Rinnai Electric Heat Pump Water Heater Manual

It's recommended to clean the air lter

located on the top of the water heater

every 3 months. Clean it with mild

detergent and water, then dry and install it

back. To remove the lter, li and slide it to

the front of the unit, and to replace it,

lower it into the lter slot on top

Refer to the Hydrogen Gas Cauon in the

Operang Instrucons.

NOTICE

Change the mode of operaon to “VACATION”

if water heater not in use for a long me, to

save energy and avoid hydrogen gas build-up.

In case of unit shut down, drain the water

heater and pipes to prevent damage from

freezing. Have a professional inspect the

heater aer a long shutdown and ensure its

fully relled before use.

Avoid removing the anode rod from the

water heater as it shortens the tank's

lifespan and voids the warranty. The anode

rod is designed to reduce corrosion in the

glass-lined tank and is slowly consumed.

High sulfate/mineral content in water can

cause a roen egg smell and chlorinaon of

the water supply can reduce this.

NOTICE

This water heater is equipped with an anode

rod engineered to extend the longevity of the

glass-lined tank. The anode rod undergoes

gradual consumpon, eecvely prevenng

or reducing corrosion of the glass-lined tank.

It is recommended to replace anode rod

every 5 years (IMPORTANT: life of the

anode rod depends on the water usage and

quality. It may need to be replaced earlier

than recommended me).

Filter

Handle

Horizontal

Air Filter

Figure 25

Ensure unobstructed condensate ow, clear

blockages if necessary. Pour a cup of bleach

into the condensate drain access opening at

least once a year to eliminate any algae, mold,

or mildew that may have developed in the

pipe.

Perform a connuity test between all 4

mounng screws around TCO switch to ensure

TCO switch works ne. If it fails connuity test,

replace the TCO switch. Refer table 14 to order

TCO replacement part.

Rinnai Electric Heat Pump Water Heater Manual

Save me and money! Review the

chart on this page rst and you

may not need to call for service.

Q: Why can’t compressor start immediately

aer seng?

A: The unit will wait for 3 min to balance the

pressure of system before starng the

compressor again, it's a self-protecon

logic of unit.

Q: Why does the temperature shown on the

display panel decreased while unit is

running?

A: When the upper tank temperature is much

higher than the lower tank temperature,

the upper hot water will be mixed by the

lower cold water which connually ows

from inlet. This will decrease the upper

temperature.

Q: Why does the element heater never turns

on even if tank temperature is signicantly

lower than set temperature?

A: Scenario 1: The unit is able to fulll hot

water demand without ulizing the backup

element heater.

Scenario 2: If unit is turned on for the rst

me, it goes through inial set up and runs

the dry-re protecon logic to ensure that

the tank is lled with water.

Scenario 3: Check if electric heang switch

parameter is set correctly. Engineering

channel 6 should be set to “

”.

Q: Why does the temperature display show

low temperature when hot water is sll

available?

A: the upper temperature sensor is located

1/4 from the top of the tank. It is possible

for the top 1/4 to sll be hot.

Q: Why are the buons unavailable

somemes?

A. The unit features child lock funcon to

avoid any accidental touch. It is indicated

by “ ” icon on the display. To unlock,

press “ ” and “ ” simultaneously for 2

seconds.

1. If an error occurs and unit starts again

aer self diagnoscs/restart, please

contact qualied and trained

professional for maintenance.

2. If an error occurs and unit does not start,

please cut o the power supply and

contact qualied and trained

professional for service. DO NOT aempt

to resolve the error in the absence of

qualied professional.

3. If a fault occurs, the “

” icon will light

up, the buzzer will beep at intervals, and

the main interface will display a fault

code.

4. Refer Secon 8.4 (Table 13) for more

details.

Rinnai Electric Heat Pump Water Heater Manual

Data Name Performance Data Descripon Unit

Upper water temperature sensor (T5U)

°F/°C

Lower water temperature sensor (T5L) °F/°C

N/A (Default: ---) -

Heat pump operang temperature max. °F/°C

Evaporator temperature sensor (T3) °F/°C

Ambient temperature sensor (T4) °F/°C

Compressor discharge temperature sensor (TP)

°F/°C

Compressor sucon temperature sensor (TH) °F/°C

N/A (Default: ---) -

Set temperature for self cleaning

°F/°C

Compressor and electric heang current Amps

DC fan Speed (rpm/10)

Machine Parameters (

255

) -

Electronic expansion valve opening Angle (Degree)

Compression mechanism hot water demand -

N/A (Default: ---) -

Fan Type (

: AC fan or

: DC fan) -

Electric heater controller type -

Compressor controller type -

N/A (Default: ---) -

Tank capacity Liters

N/A (Default: ---) -

N/A (Default: 0) -

Main PCB soware version -

Display controller soware version -

N/A (Default: 000) -

No of Electric heaters (

: one e-heater or

: two e-heaters) -

N/A (Default: 2) -

Last error code Error Code

last error code

Error Code

last error code

Error Code

Maintenance me days

Set (target) Temperature

°F/°C

End of the performance list -

Table 12

Data Name

Figure 26

Performance Data

Unit (If applies)

Press the “ ” buon (for <3 sec) to see the performance data. Use “ ” or “ ” buons

to scroll through each performance data. Refer Table 12 for data descripon and unit.

Rinnai Electric Heat Pump Water Heater Manual

Display

Unit Status

Malfuncon

Descripon

Correcve acon

EH0b

Unit Lockout

Controller to PCB

communicaon

error (controller

stops working/

malfuncon)

1. Power cycle the unit.

2. Turn o electrical power at breaker.

3. Disconnect and reconnect controller cable to

controller.

4. Disconnect and reconnect CN53 connector on the

main PCB.

5. If the error persists, contact a qualied person to

replace controller.

EH00

Unit Lockout

Machine working

parameters are

abnormal.

Power cycle the unit.

2. If the error persists, contact a qualied person to

replace main PCB.

EH03

Unit Lockout

Fan motor fault

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN51 connector on the

main PCB.

3. Inspect fan motor wire for damage.

4. If the error persists, contact a qualied person to

replace fan motor.

PH15

Unit Lockout

Electric current

leakage (If PCB

current dierence

between L,N

>14mA)

1. Power cycle the unit.

2. Turn o electrical power at breaker.

3. Check all connecons on the main PCB.

4. If the error persists, contact a qualied person to

replace main PCB.

EC54

Unit Lockout

Compressor

discharge

temperature

sensor (TP) failure.

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN28 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

replace temperature sensor.

EH5H

If both T3 and

TH fail, ONLY

heat pump

stops

Compressor

sucon

temperature

sensor (TH) failure.

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN29 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

replace temperature sensor.

Table 13

• Refer the following table to understand the occurring error code and take correcve acons

accordingly. If there is any acve error code, error code icon lights up and unit beeps unl

the error code is resolved or turned o manually.

• All alarms are audible (makes beeping noise) and they can be turned o by changing the

engineering channel 34 to “ 1 ”.

NOTICE: ALWAYS set engineering channel 34 back to “ 0 “ once the error code is resolved.

Figure 27

Error code icon

High Temp. Alert (if applies)

Error code

Rinnai Electric Heat Pump Water Heater Manual

EC53

If both T4

and T3 fail,

ONLY heat

pump stops

Ambient

temperature sensor

(T4) failure.

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN28 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

replace HP temperature sensor

EC52

If both T4

and T3 fail,

ONLY heat

pump stops

Evaporator

temperature sensor

(T3) failure.

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN28 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

replace HP temperature sensor

EH5L

If both T4

and T3 fail,

Unit lockout

Lower tank water

temperature sensor

(T5L) failure.

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN24 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

replace water temperature sensor

EH5U

If both T4

and T3 fail,

Unit lockout

Upper tank water

temperature sensor

(T5U) failure.

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN24 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

replace water temperature sensor

EH5d

ONLY

E-Heater

Stops

Electric heater open-

circuit error

1. Turn o electrical power at the breaker.

2. Check if TCO switch is triggered. If triggered, follow

secon 9.4 to reset it.

3. Check wires at elements, thermostat and control

assembly board for damage.

4. If the error persists, contact a qualied person.

EHHP

ONLY Heat

Pump Stops

Heat pump system

fault.

(When PH20,

PH21, PC30, PC06

any protecon

appears 3 mes or

the protecon lasts

more than 1 hour)

Call our Technical Support Team on a toll free number

which is listed in secon 9.6, “How to Obtain Service”.

PhdH

Unit

Lockout

Dry Fire protecon.

1. Turn o electrical power at breaker.

2. Check if tank is fully lled with water. If not, add

water by opening a hot water faucet to bleed all air

unl water ows without air bursts.

3. Turn on electrical power at breaker.

PH20

ONLY Heat

Pump Stops

Compressor

discharge

temperature

protecon (too low)

Call our Technical Support Team on a toll free number

which is listed in secon 9.6, “How to Obtain Service”.

PH21

ONLY Heat

Pump Stops

Compressor working

current protecon

(too high)

1. Power cycle the unit to see if code clears.

2. Turn o electrical power at breaker.

3. Inspect wire for damage.

4. If the error persists, contact a qualies person to

replace temperature sensor.

Rinnai Electric Heat Pump Water Heater Manual

PH24

Shut-o

valve closes

Freeze protecon

(When T5L< 39°F(4°

C) and T4 < 45°F(7ºC)

1. Power cycle the unit to see if code clears.

2. If error persists, call our Technical Assistance

Hotline which is listed on the water heater’s

warranty sheet for further assistance.

PC30

ONLY Heat

Pump Stops

ystem high pressure

protecon

(protecon acve

when ≥3.0MPa acve

and inacve when ≤

2.4Mpa)

1. Check if the air lter or air outlet is blocked. If

blocked, clean and see if the error code clears.

2. Check if evaporator is covered with too much dust.

3. If the error persists, contact a qualied person to

service the unit.

PC06

ONLY Heat

Pump Stops

High TP protecon.

(protecon acve

when TP > 221°F

(105°C) and inacve

when TP < 194°F (90°

C).

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN28 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

service the unit.

PH9b

Unit

Lockout

Overtemperature

protecon. (When

the water

temperature exceeds

the set temperature

by more than 9°F (5°

C)).

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN24 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

service the unit.

PH91

ONLY Heat

Pump Stops

Low T3 protecon.

1. Turn o electrical power at breaker.

2. Disconnect and reconnect CN28 connector on the

main PCB.

3. Inspect wire for damage.

4. If the error persists, contact a qualied person to

service the unit.

PH22

Shut-o

valve closes

Tank leakage

protecon

1. Turn o electrical power at the breaker, check all

electrical connecons, and wiring for damage.

2. Check for plumbing leaks and correct accordingly.

3. If tank is leaking, call our Technical Support Team

on toll free number which is listed on the water

heater’s warranty sheet for further assistance.

PHL1

ONLY Heat

Pump Stops

Condensate drain

leakage protecon

1. Check if the condensate line is clogged. If clogged,

follow instrucons of secon 7.5 to clean it.

2. Check if the water level switch located near

compressor works.

3. Disconnect and reconnect CN10 connector on the

main PCB.

4. If error persists, contact a qualied person service

the unit.

FC06

Shut-o

Valve closes

Shut-o valve

malfuncon

Check if the shut-o valve connector is connected.

Ensure that the shut-o valve motor assembly is

properly secured to valve.

If it does not work properly, contact a qualied

person.

Rinnai Electric Heat Pump Water Heater Manual

CTA-2045

Module

(Not supplied)

Conduit

Connector

CTA Module Connecon Port

A CTA2045 compliant Module can be connected to the water heater’s connecon port. Follow

the instrucons from the CTA2045 Module supplier for inial startup.

NOTICE

Figure 28

CTA Module

Connecon Port

Juncon Box

Cover (CTA 2045)

As shown in Figure 28, CTA module connecon port is located on top right side of water

heater. To gain access of the port, remove 3 screws holding juncon box cover and connect the

module to the port.

Rinnai Electric Heat Pump Water Heater Manual

Hot Water Outlet

3/4” Tempered

Domesc hot water

Supply to house

Nominal 3/4” size mixing or

tempering valve (refer to warning

above). Follow mixing or tempering

valve manufacturer's instrucons for

installaon of the valve

Cold Water Outlet

In demand response applicaons, a thermostac mixing valve in compliance with ASSE 1017

must be placed on the hot water supply line, following all installaon instrucons provided by

the manufacturer.

NOTICE

Figure 28

Rinnai Electric Heat Pump Water Heater Manual

For your safety DO NOT aempt repair of electrical wiring, heang elements, heat pump or electronic

controls. Refer repairs to qualied service personnel

Address parts orders to the distributor

All parts orders should

include:

marked on the rang plate.

and number of parts desired.

CAUTION

FLAMMABLE CONTENTS UNDER PRESSURE. The compressor is not a serviceable part. The

compressor wiring terminals may are allowing pressurized refrigerant and oil to escape, ignite and

cause serious bodily injury, severe burns or death.

WARNING

Check the water heater’s rating label on the front of the unit for the acceptable element wattage.

NOTICE

Figure 29

Rinnai Electric Heat Pump Water Heater Manual

Item Descripon

Part Number

Qty

50 Gallon 80 Gallon

Air Filter 108000136 1

Top Cover 109001486 109001489 1

3 Front Cover 109001485 109001488 1

4 Display Box Rear Cover 109001483 1

5 Display Box Front Cover 109001478 1

6 Display Box Assembly 105002062 1

7 Relay Board E-Box Assembly 105002060 1

8 Juncon Box Subassembly 105002061 1

9 Juncon Box Cover 109001477 1

10 Juncon Box Cover (CTA-2045) 109001479 1

11 Main Control E-Box Assembly 105002065 105002068 1

11.1 Main Control E-Box Lid Assembly 109001480 1

11.3 Compressor Capacitor 105002063 1

12 Cover of Relay Board E-Box 109001482 1

13 Motor Holder Assembly 109001481 1

14 Fan Motor 108000140 1

15 Axial Flow Fan 108000137 1

16 Venlaon Ring 108000141 1

17 Fan Box Assembly 108000138 108000139 1

23 Water Level Switch 105002058 1

25 HP Temperature Sensors (T3, T4, TP) 105002066 105002067 1

26 Sucon Line Temperature Sensor (TH) 105002059 1

27 Drainage Pipe 107000674 1

28 Ground Wire 105002055 1

29 Compressor Harness 105002056 1

30.2 Insulang Cover (Upper) 109001492 1

30.3 Insulaon Cover (lower) 109001493 1

30.4 Cover (TCO)/Cover (Electric Heater) 109001491 2

30.5 Thermal Cut-o (TCO) 105002070 1

30.6 Element Heater 105002064 1

30.7 T&P Valve 107000677 1

30.8 Water Temperature Sensor 105002069 2

30.9 Drain Valve 107000678 1

30.11 Anode Rod 107000679 107000680 1

30.12 Water Outlet J-Tube 107000675 1

30.13 Water Inlet Pipe Assembly 107000676 1

Table 14

Rinnai Electric Heat Pump Water Heater Manual

The following instrucons are intended for qualied service personnel ONLY and should only be

done when necessary.

CAUTION

Press the buon to reset

Figure 30

element, follow the instrucons below:

3. Remove one screw holding insulang cover to gain access to TCO/ water temperature

sensor/heang element.

necessary.

5. Remount the insulaon cover, TCO cover, and turn on the electrical power at breaker.

Before working near an energized circuit, ensure that all power to the unit is disconnected.

Neglecng to do so may lead to electrical shock, causing signicant personal injury or even

death.

WARNING

Rinnai Electric Heat Pump Water Heater Manual

Figure 31

Rinnai Electric Heat Pump Water Heater Manual

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 published product specicaons, subject to

the terms within this Limited Warranty document. This Limited Warranty applies only to products

that meet the requirements of a “qualied product installaon” and are originally installed in the

United States and Canada. Improper installaon may void this Limited Warranty. A “qualied

product installaon” consists of the following: (1) installed by a company or individual which holds a

current government issued license which ceres the company or individual is qualied to install

and service Electric Heat Pump Water Heater in the state where the product is located, if such

licensing is required; and (2) installaon, startup, operaon and service is performed in compliance

with (a) all Rinnai published engineering, applicaon, installaon, startup and service

documentaon, (b) all applicable federal, state and local laws, (c) applicable plumbing, electrical,

mechanical and building codes and best industry standards. This Limited Warranty is subject to the

condions that the Rinnai electric heat pump water heater has been installed per the “qualied

product installaon” terms and ongoing and proper maintenance has been performed, according to

Rinnai Installaon and Service documentaon, by a professional, licensed (if required) contractor.

Proof of the required service and maintenance tasks being completed must be kept in the provided

Rinnai Installaon and Service Record. This Limited Warranty coverage, as set out in the table

below, extends to the original end use 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.

[1]

Parts replaced during recommended maintenance procedures are not covered by this Limited

Warranty.

Item Period of Coverage (from date of purchase)

Tank 10 Years

All Other Parts and Components

[1]

10 Year

Reasonable Labor

1 Year

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 for products which meet the “qualied

product installaon” requirements. 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.

Table 15

Rinnai Electric Heat Pump Water Heater 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 90 days of purchasing the product. To register your

Rinnai Heat Pump 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, misuse, alteraon or misapplicaon

• Force majeure

• Improper installaon (such as but not limited to inadequate water quality, condensate

damage, improper ducng, incorrect water pressure, or absence of a drain pan under the

product)

• Damage caused by incorrect commissioning

• Improper maintenance (such as but not limited to scale build-up, freeze damage, or duct

blockage)

• Use in or around areas where chemical agents are used (such as but not limited to chlorine,

hair spray, or hair dyes)

• Damage or failure caused by contaminated air, including, but not limited to sheetrock

parcles, plasterboard parcles, dust, dirt, or lint entering the water heater or any of its

components

• Water hammer

• Any other causes other than defects in materials or workmanship

This Limited Warranty does not cover any other costs including but not limited to lodging, fuel,

transportaon, handling, etc. incurred during in the installaon, removal, replacement, repair,

maintenance, troubleshoong or complying with Naonal, State or Local building, mechanical or

electrical codes nor any expenses associated with providing substute or temporary equipment

and/or service during me in which product is inoperable or not being ulized pending repair or

replacement under this Limited Warranty.

If you purchase a Rinnai product from an unauthorized dealer, or if the original factory serial

number has been removed, defaced or altered, your Rinnai warranty will not be valid.

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.

This Limited Warranty shall not be aected, extended, or enlarged and no addional obligaon or

liability will be incurred by Rinnai providing technical informaon, applicaons recommendaons, or

equipment modicaons to any enty or person who is related to the design, equipment selecon,

installaon, operaon, maintenance, service, or repair of the product.

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.

Rinnai REHP80 Electric Heat Pump Water Heater

Product's Documents

Installation and Operation Manual

Specifications

Rinnai REHP80 Questions and Answers