Printed in USA
NOTICE: This water heater is designed for use in a commercial application and the installation and maintenance of
it sho
uld be performed by qualified, licensed service personnel. If the foregoing assumption is not appropriate, then
we rec
ommend that you obtain and retain our Residential Use & Care Manual.
CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to
cause cancer, b
irth defects or other reproductive harm.
!
!
WITH INSTALLATION INSTRUCTIONS FOR THE INSTALLER
Commercial Electric Water Heater
USE & CARE MANUAL
®
LISTED
18GO
The purpose of this manual is twofold: one, to provide the installing contractor
with basic directions and recommendations for the proper installation and
adjustment of the water heater; and two, for the owner-operator, to explain the
features, operation, safety precautions, maintenance and trouble shooting
of the water heater. This manual also includes replacement parts informa-
tion.
It is imperative that all persons who are expected to install, operate or ad-
just this water heater read the instructions carefully so that they may un-
derstand how to perform these operations. If you do not understand these
instructions or any terms within it, seek professional advice
Any questions regarding the operation, maintenance, service or warranty
of this water heater should be directed to the entity from whom it was pur-
chased. If additional information is required, refer to the section on “If You
Need Service”.
Do Not Destroy this Manual. Please read carefully
and keep in a safe place for Future Reference.
Recognize this symbol as an Indication of Im-
portant Safety Information!
!
!
AP13387 (11/03)
2
Safety Information
Safety Precautions . . . . . . . . . . . . . . . . . . . 3
Introduction
Local Installation Regulations. . . . . . . . . . 4
Water Heater Location . . . . . . . . . . . . . . . . 4
Installation Instructions
Inspect Shipment . . . . . . . . . . . . . . . . . . . . . 4
Water Supply Connections . . . . . . . . . . 5, 6
Electrical Connections . . . . . . . . . . . . . . . . 7
Installation Checklist . . . . . . . . . . . . . . . . . . 9
Operating Instructions
Water Temperature . . . . . . . . . . . . . . . . . . 10
Safety Controls . . . . . . . . . . . . . . . . . . . . . . 10
Extended Shut Down. . . . . . . . . . . . . . . . . 11
Draining the Water Heater . . . . . . . . . . . . 11
Troubleshooting
System Sentinel
®
. . . . . . . . . . . . . . . . . . . 12
Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . 13
Customer Service
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
If You Need Service. . . . . . . . . . . . . . . . . . 14
Care and Cleaning
Routine Maintenance . . . . . . . . . . . . . . . .12
TABLE OF CONTENTS
Your safety and the safety of others is very impor-
tant. There are many important safety messages
in this manual and on yo
ur appliance. Always read
and obey all safety messages.
This is the safety alert symbol. Recognize this sym-
bol as an indication of Important Safety Information!
This symbol a
lerts you to potential hazards that can
kill or hurt you and others.
All safety messages will follow the safety alert
symbol and either the word “DANGER”, “WARN-
ING”, “CAUTION” or “NOTICE
”.
These words mean:
DANGER
An imminently hazardous
situation that will result in
death or serious injury.
WARNING
A potentially hazardous
situation that could result
in death or serious injury
and/or damage to property.
CAUTION
A potentially hazardous
situation that may result in
minor or moderate injury.
Notice:
Attention is called to
observe a specified proce
dure or maintain a specific
condition.
!
!
!
!
READ THE SAFETY INFORMATION
To meet commercial water use needs, the surface mounted ther-
mostats on this water heater are adjustable to deliver 170
°F for
the 85 gallon and 105 gallon models. However, water tempera-
tures over 125°F can cause severe burns instantly or d
eath from
scalds. This is the preferred starting point for setting the control
for supplying general purpose hot water.
Safety and energy conservation are factors to be considered when
setting the water temperature on the thermostat. The m
ost ener-
gy efficient operation will result when the temperature setting is
the lowest that satisfies the needs consis
tent with the application.
Maximum water temperatures occur just after the thermostat has
shut off the elements. To fin
d the hot water temperature being de-
livered, turn on a hot water faucet and place a thermometer in the
hot water stream an
d read the thermometer.
The following chart details the relationship of water temperature
and time with regard to scald
injury and may be used as a guide
in determining the safest water temperature for your applica-
tions.
The temperature of
the water in the heater can be regulated by
adjusting the thermostats. To comply with safety regulations both
thermosta
ts were set at the factory to a setting corresponding to
120°F. The illustration below pictures the thermostats used on
t
he water heater covered in this manual and how to adjust the
water temperature.
Hotter water increase the Potential for H
ot Water SCALDS.
NOTICE: When this water heater is supplying general purpose
hot water requirements for use by individu
als, a thermostatically
controlled mixing valve for reducing point of use water temperature
is recommended to reduce t
he risk of scald injury. Contact a li-
censed plumber or the local plumbing authority for further infor-
mation.
3
Be sure to read and understand the entire Use & Care Manual before attempting to install or operate this water heater. Pay particular attention to the
following General Safety Precautions. Failure to follow these warnings could result in serious bodily injury or death . Should you have any problems
understanding the instructions in this manual, STOP, and get help from a qualified installer or service technician or the local utility.
General Safety Precautions
DANGER
!
HOT
Water temperature over 125°F can
cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
Temperature Time to Produce Serious Burn
120° F More than 5 minutes
125° F 1
1
/
2
to 2 minutes
130° F About 30 seconds
135° F About 10 seconds
140° F Less than 5 seconds
145° F Less than 3 seconds
150° F About 1
1
/
2
seconds
155° F About 1 second
Table courtesy of Shriners Burn Institute
TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
DANGER
!
R
E
S
E
T
R
E
S
E
T
TURN OFF
POWER
BEFORE
SERVICING
LOW
MED
HI
To adjust the water temperature on Surface Mounted Thermostat,
insert a small straight screwdriver into slotted screw of indicator
and move indicator to desired setting.See Operation Section of
this Manual for details.
Surface Mounted
Thermostat
!
DANGER — Hotter water increases
the Potential for Hot Water SCALDS.
!
4
Read and Review this entire Manual with special emphasis
on the Installation Section (Pages 4 - 8) and Operation Sec-
ti
on (Pages10 -11) prior to any installation work.
The factory installed vacuum valve on this water heater is an essential
part of the product and must remain on the heater a
s provided.
LOCAL INSTALLATION REGULATIONS—
This water heater must be in-
stalled in accordance with these instructions, local codes, utility com-
pany requirements, and/or in the absence of local codes, the latest edi-
tion of the American National Standard / National Electrical Code. A copy
of which can be purchased from the National Fire Protection Associa-
tion, 1 Batterymarch Park, Quincy, MA 02269 as booklet NFPA 70.
LOCATION
A.
The water heater should be installed in a clean, dry location as close
as practical to the area of greatest hot water demand. Long hot water
lines should be insulated to conserve water and energy. The water
heater and water lines should be protected from exposure to freez-
ing temperatures. DO NOT install the water heater in an outdoor, un-
protected area.
B.
The water heater should not be located in an area where leakage of
the tank or connections will result in damage to the area adjacent to
it or to lower floors of the structure. When such areas cannot be avoid-
ed, it is recommended that a suitable catch pan, adequately drained,
be installed under the water heater.
NOTICE: Auxiliary catch pan installation MUST conform the applic-
able local codes.
Make certain the floor underneath
the water heater is strong enough
to sufficiently support the weight of the water heater once it is filled
with water.
C. F
OR THE TANK TYPE MODELS,
the minimum distance to provide
adequate clearance for protection of combustible material is 0 inch-
es from jacket and 18 inches from access door. However, addition-
al clearance for accessibility to permit inspection and servicing such
as removing heating elements or checking controls must be provid-
ed. All models are approved for installation on combustible flooring.
D. RESTAURANT INSTALLATION:
If the water heater is to be installed in a restaurant, or other location
where NSF International listing is required, it must be weather sealed
to the floor, a raised base, or shelf so that seepage cannot accu-
mulate under it; or elevated to provide at least (6) inches of clear-
ance from the floor.
In order to meet NSF International requirements for Standard 5, the
base of the water heater must be sealed to the floor to prevent seep-
age underneath. Apply a 3/8” bead of RTV Silicone completely
around the floor edge of the base of the tank.
The manufacturer’s warranty does not cover any damage or
defect caused by installation, or attachment or use of any
spec
ial attachment such as energy saving devices (other
than those authorized by the manufacturer) into, onto, or in
conjun
ction with the water heater. The use of such unautho-
rized devices may shorten the life of the water heater and
may endang
er life and property. The manufacturer disclaims
any responsibility for such loss or injury resulting from the
use of su
ch unauthorized devices.
1. INSPECT SHIPMENT—
for possible damage. The manufacturer’s
responsibility ceases upon delivery of goods to the carrier in good
condition. Any claims for damage, shortage in shipments, or non-
delivery must be filed immediately against carrier by consignee.
2.
THERMAL EXPANSION — Determine if a check valve exists in
the inlet water line.
It may have been installed in the cold water
line as a separate back flow preventer, or it may be part of a pres-
sure reducing valve, water meter or water softener. A check valve
located in the cold water inlet line can cause what is referred to
as a
”closed water system”
. A cold water inlet line with no check
valve or back flow prevention device is referred to as an ”open”
water system.
As water is heated, it expands in volume and creates an increase
in the pressure within the water system. This action is referred to
as
”thermal expansion”
. In an ”open” water system, expanding
water which exceeds the capacity of the water heater flows back
into the city main where the pressure is easily dissipated.
A
”closed water system”
, however, prevents the expanding water
from flowing back into the main supply line, and the result of
”ther-
mal expansion”
can create a rapid, and dangerous pressure
increase in the water heater and system piping. This rapid pres-
sure increase can quickly reach the safety setting of the relief
valve, causing it to operate during each heating cycle. Thermal
expansion, and the resulting rapid, and repeated expansion and
contraction of components in the water heater and piping system
can cause premature failure of the relief valve, and possibly the
heater itself.Replacing the relief valve
will not
correct the prob-
lem!
The suggested method of controlling thermal expansion is to
install an expansion tank in the cold water line between the water
heater and the check valve. The expansion tank is designed with
an air cushion built in that compresses as the system pressure
increases, thereby relieving the over pressure condition and elimi-
nating the repeated operation of the relief valve. Other methods of
controlling thermal expansion are also available. Contact your
installing contractor, water supplier, or plumbing inspector for
additional information regarding this subject.
If a recirculation line is installed, the return connection should be made
to a tee close to the inlet connection on the water heater. A check
Installation
Introduction
WARNING
!
WARNING
!
5
Installation
Figure 2 — Typical installation methods using Water Heater Installation Kit (top), Soldered Copper or CPVC Pipe (center), or
Threaded Pipe (bottom).
SOLDERED COPPER OR
CPVC PLASTIC PIPE
CAUTION: DO NOT SWEAT SOLDER DIRECTLY TO THE WATER HEATER HEX UNION NUTS AS SOLDERING TORCH
HEAT WILL DAMAGE THE WATER HEA
TER BEYOND REPAIR.
Hot Water
Outlet
Cold Water
Inlet
Shut-Off
Valve
Flexible
Connector
Flexible
Connector
Extension Fitting
(included with heater)
HOT Outlet
Hex Union Nut
T & P
Relief
Valve
*
* See Temperature & Pressure (T & P) Relief Valve section for drain pipe installation details.
Vacuum Valve Ass’y
(included with heater)
Seal Ring
(included with heater)
Seal Ring
(included with heater)
Extension Fitting
(included with heater)
Vacuum Valve Ass’y
(included with heater)
Seal Ring
(included with heater)
Seal Ring
(included with heater)
COLD Inlet
Hex Union Nut
HOT Outlet
Hex Union Nut
T & P
Relief
Valve
*
COLD Inlet
Hex Union Nut
HOT Outlet
Hex Union Nut
T & P
Relief
Valve
*
COLD Inlet
Hex Union Nut
HOT Outlet
Hex Union Nut
T & P
Relief
Valve
*
COLD Inlet
Hex Union Nut
HOT Outlet
Hex Union Nut
T & P
Relief
Valve
*
COLD Inlet
Hex Union Nut
Hot Water
Outlet
Cold Water
Inlet
Shut-Off
Valve
Union
Union
Hot Water
Outlet
Cold Water
Inlet
Shut-Off
Valve
Union
Union
90° Elbow
90° Elbow
Hot Water
Outlet
Cold Water
Inlet
Shut-Off
Valve
Union
Union
Hot Water
Outlet
Cold Water
Inlet
Shut-Off
Valve
Flexible
Connector
Flexible
Connector
Extension Fitting
(included with heater)
1” Adapter
Sweat X Female Pipe
Vacuum Valve Ass’y
(included with heater)
Seal Ring
(included with heater)
Seal Ring
(included with heater)
1” Adapter
Sweat x Male Pipe
Extension Fitting
(included with heater)
1” Adapter
Sweat X Female Pipe
Vacuum Valve Ass’y
(included with heater)
Seal Ring
(included with heater)
Seal Ring
(included with heater)
1” Adapter
Sweat x Male Pipe
Extension Fitting
(included with heater)
1” Female Coupling
Vacuum Valve Ass’y
(included with heater)
Seal Ring
(included with heater)
Seal Ring
(included with heater)
90° Elbow
90° Elbow
HOT Outlet
Hex Union Nut
T & P
Relief
Valve
*
COLD Inlet
Hex Union Nut
Hot Water
Outlet
Cold Water
Inlet
Shut-Off
Valve
Union
Union
90° Elbow
90° Elbow
Extension Fitting
(included with heater)
1” Female Coupling
Vacuum Valve Ass’y
(included with heater)
Seal Ring
(included with heater)
Seal Ring
(included with heater)
THREADED PIPE
WATER HEATER
INSTALLATION KIT
Figure 1. — Typical Installation and Method of Supporting Relief Valve Drain Pipe.
Installation
6
Temperature & Pressure
Relief Valve
Union
(The addition of a union at this point will help in the
replacement of the T & P Relief Valve should the
need arise.)
Drain Pipe
Drain Valve
No threads permitted on
end of Drain Pipe.
6” Maximum distance
from drain pipe to suitable
open drain.
Support the relief valve drain pipe
using metal strapping or wire fas-
tened to the structure overhead.
Seal Ring
Hex Union Nut
(Relief Valve)
NOTICE: Vacuum Relief
Valve - DO
NOT
REMOVE, COVER, OR
BLOCK!
Hot Water
Outlet
Cold Water
Inlet
valve should always be installed in the recirculation line to prevent cold
water from entering.
3. WATER CONNECTIONS—
This heater may be connected individ-
ually in multiples with others, or with an external hot water storage
tank. It may also be used to boost the temperature of preheated
water.
NOTICE: If the incoming water pressure is over 80 PSI, be
sure to install a pressure reducing valve (water pressure reg-
u
lator) somewhere in the inlet water line upstream of the
water heater.
NOTICE: DO NOT remove the vacuum valve for any reas
on.
Doing so will void the manufacturer’s warranty!
Inlet and outlet water connections are clearly marked next to the
connections on the heater. Use only clean, new galvanized steel,
copper or approved plastic for pipe for water connections. Local
codes shall govern the exact type of material to be used. The in-
stallation of unions on the inlet and outlet water lines and a shut-
off valve in at least the cold water line is recommended so the water
heater may be easily disconnected for servicing. Dielectric unions
are not required for protection of the water heater.
IMPORTANT!! Do not apply heat directly to the plumbing con-
nections at the top of this water heater. If sweat connection
s
are used, sweat tubing to connectors and allow to cool before
fitting connectors to the brass fittings at the top of the h
eater.
ANY HEAT APPLIED OR TRANSFERRED FROM THE COP-
PER PIPE AND CONNECTORS TO THE HOT AND COLD
BRASS WATER FITTINGS CAN P
ERMANATELY DAMAGE
THE TANK.
The connection between the vacuum valve and the water
heater uses a seal ring. If unions are n
ot used on the water
heater supply lines, the vacuum valve can be removed from
the heater to accommodate final con nection
to supply piping.
The hex union fitting on the water heater can then be used to
make the connection between the tank and the
valve/supply
piping. Remember to use the seal ring provided with the
water heater when re-installing the vacuum valve a
nd water
inlet piping. DO NOT use pipe sealant on this joint!
IMPORTANT! – DO NOT attempt to turn the pipe or fittings
after
the hex union nuts are tightened.
Doing so will damage
the water heater beyond repair!
When this water heater is supplying general purpose hot water re-
quirements for use by individuals, a thermostatically controlled
mixing valve is recommended to reduce the risk of scald injury.
Contact a licensed plumber or the local plumbing authority for fur-
ther information.
Thermometer(s) should be installed to indicate the temperature of
the water at or near the outlet of the water heater and storage
tank(s) if provided. See Fig. 1 or 2.
4. RELIEF VALVE —
A new combination pressure and tem-
perature relief valve, complying with the Standard for Relief Valves
and Automatic Gas Shutoff Devices for Hot Water Supply Systems,
ANSI Z21.22, is factory installed on this water heater at the time
of manufacture. No valve is to be placed between the relief valve
and the water heater. For a circulating tank installation, the sepa-
rate storage tank(s) must have similar protection. Local codes shall
govern the installation of relief valves.
The pressure rating of the relief valve must not exceed 150 psi, the
maximum working pressure of the water heater as marked on the
rating plate. The Btu/h rating of the relief valve must not be less
than the input rating of the water heater as indicated on the rating
plate located on the front of the heater. (1 watt = 3.412 Btu/h).
Connect the outlet of the relief valve to a suitable open drain so
that the discharge water cannot contact live electrical parts. The
discharge line must pitch downward from the valve to allow complete
draining (by gravity) of the relief valve and discharge line and be no
smaller than the outlet of the valve. The end of the discharge line
should not be threaded or concealed and should be protected from
freezing. No valve of any type, restriction or reducer coupling should
be installed in the discharge line. Local codes shall govern the in-
stallation of relief valves.
Following all of the above rules, install the drain valve discharge
piping, using thread sealer on all male threads.
5. DRAIN VALVE —
The drain valve is factory installed. If required, to
face the drain valve outlet in a different direction, loosen the union
hex nut, position drain valve outlet as desired, and retighten union
hex nut.
NOTICE: DO NOT attempt to turn the drain valve without first
loosening the union hex nut. Doing so could damage the
water h
eater beyond repair.
6. TO FILL WATER HEATER —
Make certain drain valve is completely
closed. Open shut-off valve in cold water supply line. Open each
hot water faucet slowly to allow air to vent from the water heater
and piping. A steady flow of water from the hot water faucet(s) in-
dicates a full water heater.
Tank MUST be full of water before power is turned ON. Heat-
ing elements and the tank WILL BE DAMAGED if energized
for even a
short time while tank is dry. The water heater’s
warranty does not cover damage or failure resulting from op-
eration wit
h an empty or partially empty tank. (Refer to the
Certificate of Limited Warranty for complete terms and con-
ditions.)
7. ELECTRICAL CONNECTIONS & WIRING —
The water heater is
completely internally wired to the field connection terminal block.
Check the rating plate of the water heater to power supply for cor-
rect voltage and phase.
Provide a separate branch circuit with overcurrent protective device
and suitable disconnecting means for each water heater. Refer to
Table 1 on following page for minimum branch circuit sizing.
Water heater internal wiring diagrams are located in the back of
this manual.
7
Installation
WARNING
!
8
Installation
Table 1. — Minimum Branch Circuit and Wire Sizing Guide. Based on N.E.C. ANSI / NFPA 70 - 1993; Article 422-4(a); Article 240-
6(a); Chapter 9, Table 3A; and Table 310-16 (Based on 75°C Type THW wire)
8. GROUNDING—
The presence of water in the piping and water heater does not
provide sufficient conduction for a ground. Nonmetallic pi
p-
ing, dielectric unions, flexible connections, Etc.., can cause
the water heater to be electrically isolated.
The branch circuit should include either:
A.
Metallic conduit or metallic sheathed cable approved for use as a
grounding conductor and installed with fittings approved for the pur-
pose.
B.
Nonmetallic sheathed cable, or metallic conductor or metallic
sheathed cable not approved for use as a grounding conductor,
shall include a separate conductor for grounding. It shall be con-
nected to the grounding means of the water heater (1/4” green
screw) and that of the electrical distribution box. Terminate
stranded grounding conductors with suitable pressure connectors.
ALUMINUM WIRE CONNECTIONS
When aluminum wire is used for electrical supply leads, it is ad-
visable to check the field terminal connections of a new instal-
lation twenty-four hours after the heater has been placed in ser-
vice for possible need to retighten. Torque specs are marked on
the terminal block.
The water heater tank is insulated with 2
1
/2” of foam insulation to
stop heat loss. More insulation is not needed. DO NOT install an
insulating blanket.
If local codes require external application of insulation blanket
kits the manufacturer’s instructions included wit
h the kit must
be carefully followed.
Application of any external insulation to this water heater will
require careful a
ttention to the following:
•
Do not cover the temperature and pressure relief valve.
•
Do not cover jacket access panels to thermostats and
heating elements.
•
Do not cover electrical junction box of water heater.
•
Do not cover operating or warning labels attached to the
water heater nor attempt to relocate them on exterior of
insulat
ion blanket.
The manufacturer’s warranty does not cover any damage or
defect caused by installation, attachment or use
of any type of
energy saving or other unapproved devices (other than those
authorized by the manufacturer) into, onto or
in conjunction with
the water heater. The use of unauthorized energy saving devices
may shorten the life of the water hea
ter and may endanger life
and property. The manufacturer disclaims any responsibility for
such loss or injury resultin
g from the use of such unauthorized
devices.
CAUTION
!
WARNING
!
208 240 277 480
Wire Con- Wire Con- Wire Con- Wire Con- Wire Con- Wire Con- Wire Con- Wire Con-
VVVVGa.dui
t
Ga. duit Ga. duit Ga. dui
t
Ga. duit Ga. dui
t
Ga. dui
t
Ga. dui
t
12.4 1 80 70 60 35 4 1 3 1 1/4 6141614110 8
35045x25816 1 8161xxxx12 10 1/2
18 1 110 100 90 50 2 1 1/4 1/0 1 1/2 3 1 1/4 1 1 1/4 4 1 2 1 1/4 8 3/4 6 1
38070x354 3 614 xxxx10 81
241150125110701/0 /02 1 /0 2 1/0 6141
310090x453 1 2 xxxx8161
480 Volt
Copper Aluminum
kW
Phase
Recommended
Copper
208 Volt
Aluminum
Over Current 277 Volt
Copper AluminumProtection Rating
240 Volt
Copper Aluminum
1 1/2
1 1/4
1 1/2
1 1/2
1 1/4 1/4 1 1/4
1 1/4
1 1/4
1 1/4
1 1/4
3/4
1/2
1/2
1 1/4
3
1 1/4
1/2
2
9
A. Water Heater Location
❑
Close to area of heated water demand.
❑
Indoors and protected from freezing temperatures.
❑
Area free of flammable vapors.
❑
Provisions made to protect area from water damage.
❑
Sufficient room to service water heater.
B. Water Supply
❑
Water heater completely filled with water.
❑
Air purged from water heater and piping.
❑
Water connections tight and free of leaks
C. Relief Valve
❑
Temperature and Pressure Relief Valve properly installed
and discharge line run to open drain
❑
Discharge line protected from freezing.
D. Wiring
❑
Power supply voltage agrees with water heater rating plate.
❑
Branch circuit wire and fusing or circuit breaker of proper
size.
❑
Electrical connections tight and unit properly grounded.
Installation Check List
Model No. Serial No. Date of Installation Installed By:
TO PLACE WATER HEATER IN OPERATION:
Make certain tank is completely filled with water before plac-
ing the water heater in operation. (Refer to Installatio
n Sec-
tion of this manual)
This unit is equipped with a “Dry Fire Protection Switch” located near the
terminal block in the electrical compartment. The switch should be in the
“Protect” position, which isolates the elements from the power supply,
when installing or working on the unit. Before placing the switch in the
“Normal” position, to operate the elements, make certain the tank is com-
pletely filled with water. Failure to do this could result in damage to the
tank and elements.
Placing the “Dry Fire Protection Switch” in the “Protect” position only iso-
lates the elements from the electrical power. All other parts will still be
“LIVE”. Turn off the main power to the water heater before removing or
opening any covers.
1. WATER TEMPERATURE SETTING —
To comply with safety reg-
ulations and reduce the risk of scald injury, the thermostat(s) of
the water heater has been set at the factory to a setting corre-
sponding to 120° F. This is the preferred starting point for setting
the control for general purpose hot water. To meet commercial
water needs for dishwasher rinse applications and other com-
mercial purposes, where water temperatures are needed beyond
the upper limit of this water heater, a Booster heater may be re-
quired.
Water temperatures over 125° F can cause severe burns in-
stantly or death from scalds.
It is recommended that the thermostats remain at the factory set-
ting for most normal applications. All water temperature adjust-
ments should be made at both thermostats.
Safety and energy conservation are factors to be considered when
setting the water temperature on the thermostat. The most energy
efficient operation will result when the temperature setting is the
lowest that satisfies the needs consistent with the application.
Hotter water increases the Potential for Hot Water SCALDS.
NOTICE: When this water heater is supplying general pur-
pos
e hot water requirements for use by individuals, a ther-
mostatically controlled mixing valve for reducing point of
use
water temperature is recommended to reduce the risk of
scald injury. Contact a licensed plumber or the local plumb-
ing a
uthority for further information.
Outlet water temperatures will vary during normal operating cy-
cles. Reliable temperature readings should be taken shortly after
the thermostat(s) cycle off during a period of little or no use.
If water temperature other than 120° F is needed, the following in-
structions will apply.
Be certain power to the water heater is turned OFF before ad-
justing temperature setting of thermostat.
The upper thermostat controls the upper two heating elements.
The lower thermostat controls the lower two heating elements. The
lower two elements provide recovery while the upper two elements
assist with larger demands for water. They are located behind the
removable pad of glass fiber insulation in the control compartment.
Adjust thermostat dial pointer, with a small screwdriver, to the de-
sired water temperature setting (refer to Fig. 3).
THERMOSTAT
PROTECTIVE COVER SHOULD NOT BE REMOVED.
The ther-
mostat is adjustable from a “LOW” to “HI” setting. An approximate
10
A.
Do
turn off power to water heater if it has been subjected to over
heating, fire, flood or physical damage.
B.
Do Not
turn on water heater unless it is filled with water.
C.
Do Not
turn on water heater if cold water supply shut-off valve is
closed.
D.
If there is any difficulty in understanding or following the OPERA-
TION or MAINTENANCE instructions, it is recommended that a
qualified person or serviceman perform the work.
SAFETY PRECAUTIONS
Operation
R
E
S
E
T
R
E
S
E
T
TURN OFF
POWER
BEFORE
SERVICING
LOW
MED
HI
To adjust the water temperature on Surface Mounted Thermo-
stat models, insert a small straight screwdriver into slotted screw
of indicator and move indicator to desired setting.See Opera-
tion Section of this Manual for details.
DANGER!! — Hotter water in-
creases the Potential of Hot
Water SCALDS!
!
Surface Mounted
Thermostat
Figure 3. — Thermostat Adjustment
CAUTION
!
WARNING
!
WARNING
!
DANGER
!
DANGER
!
water temperature of 140° F is accomplished when the tempera-
ture dial pointer is in the “MED” position. Each mark above and
below the “MED” position indicates an approximate 10° F change
in water temperature.
Replace insulation, close access door and turn power ”ON”, and
the water heater is operational.
NOTICE: A thermometer(s) installed at or near the outlet of the
water heater and/or storage tank(s) will result in the mo
st accu -
rate outlet water temperature measurement.
2. HIGH TEMPERATURE LIMIT CONTROL —
Surface Thermostats
are equipped with a manual reset high temperature limiting con-
trol(s). If for any reason the water temperature becomes exces-
sively high, The High Temperature Limit Control breaks the power
to the heating elements. Once this control opens, it must be man-
ually reset.
The cause of the high temperature condition must be in-
vestigated by qualified service personnel and corrective ac-
ti
on taken before placing the water heater in service again.
TO RESET HIGH TEMPERATURE LIMIT CONTROL:
Be certain the power supply to the water heater is turned
“OFF” before attempting to reset the Limit Control.
NOTE: Allow the water in the tank to cool before resetting the High
Temperature Limit Control.
On Surface Mounted Thermostat models, press the red “RESET”
button located above the thermostat (refer to Fig. 3). The thermo-
stat protective cover
SHOULD NOT
be removed.
3. EMERGENCY INSTRUCTIONS —
If the water heater has been subjected to flood, fire, or phys-
ical damage, turn off power and water to water heater. Do no
t
operate the water heater again until it has been thoroughly
checked by qualified service personnel.
4. LONG TIME SHUT-DOWN —
If the water heater is to remain idle
for an extended period of time (60 days or more), the power and
water to the water heater should be turned off to conserve ener-
gy. Place the “Dry Fire Protection” switch in the “Protect” position
to prevent accidental dry-fire during start-up. The water heater
and piping should be drained if they might be subjected to freezing
temperatures. It is recommended that the water heater’s opera-
tion and controls should be checked by qualified service personnel,
before putting it in service again.
Make certain the water heater is completely filled. Then
place “Dry Fire Protection” switch in normal position before
a
gain placing it in operation.
5. DRAINING HEATER —
Be sure that the power to the water heater is shut off
before draining water.
The water drained from the tank may be hot enou
gh to pre-
sent a SCALD HAZARD and should be directed to a suitable
drain to prevent injury or damage.
In order to drain this water heater, be certain to turn OFF power at
the service panel before turning OFF the cold water supply.
Before opening the drain valve, it is necessary to admit air into the
tank.
OPEN a hot water faucet and leave it OPEN until the tank is
completely drained, or lift the handle on the relief valve until it is
completely drained.
DO NOT USE A PUMP TO DRAIN THE TANK,
UNLESS THE WATER HEATER IN THE TANK HAS BEEN COM -
PLETELY COOLED DOWN. TO DO THIS, TURN OF
F THE POWER
AT THE SERVICE PANEL AND RUN WATER AT A HOT FAUCET
UNTIL IT RUNS COMPLETELY COLD. TURN OFF THE WATER
SUPPLY AND OP
EN A HOT FAUCET TO ADMIT AIR INTO THE
TANK.
Attach a garden hose to the drain valve on the water heater
and direct the stream of water to a drain where it will do no damage.
11
Operation
CAUTION
!
WARNING
!
WARNING
!
WARNING
!
CAUTION
!
CAUTION
!
Properly maintained, this water heater will provide years of depend-
able, trouble free service. It is strongly suggested that a regular rou-
tine maintenance program be established and followed by the owner.
It is further recommended that a periodic inspection of the relief valve
and electrical controls be made by service personnel qualified in elec-
tric appliance repair.
Make certain all power to the water heater is turned “OFF” be-
fore performing any maintenance or inspection work on this
water heater.
1. ELECTRICAL CONNECTIONS —
Periodic inspection of all elec-
trical connections at the service terminal block, fuse holders, con-
tactors, thermostats and elements should be performed to make
certain all connections are tight. If the electrical supply leads used
are aluminum, particular attention should be given to the branch cir-
cuit connections at the heater’s terminal block. It is advisable to
retighten the field terminal connections of aluminum conductors
twenty-four hours after the water heater was first placed in ser-
vice. Torque specs are marked on the terminal block.
NOTICE: On surface mounted thermostat models, make certain
insulation is carefully replaced and tucked in before plac
ing heater
in operation. Also check the thermostat to be certain that the mount-
ing screws are tightened making good con
tact with the thermo -
stat mounting plate.
2. FUSES —
Any replacement fuses should be of the same UL Class
and type as the originals. The amp rating of the element circuit
fuses may be reduced on those models not having high amperage
elements.
3. HEATING ELEMENTS —
The life of elements can be extended in
hard water areas by removing the scale build up. Cleaning can be
accomplished by scraping or soaking in a de-scaling solution. Care
should be taken so the protective plating is not damaged by scrap-
ing or dissolved by excessive soaking.
Be certain all power to the water heater is turned “OFF” and
tank has been completely drained before removing elements
fo
r cleaning.
Whenever an element is removed from the tank for cleaning or re-
placement, a new gasket should be installed to prevent a possi-
ble water leak. Refer to parts information in this manual for re-
placement gasket information. The elements are easily unscrewed
with a 1-7/8” socket wrench.
4. RELIEF VALVE —
The Temperature and Pressure Relief Valve
must be free to operate properly. Check operation (at least once a
year) by lifting the handle fully and allowing several gallons of
water to flush through the discharge line. Make certain the dis-
charged water is directed to a suitable drain.
Before manually operating the relief valve, make certain no
one will be exposed to the danger of coming in contact with
th
e hot water released by this valve. The water may be hot
enough to create a SCALD hazard. The water released
should be direc
ted to a suitable drain to prevent injury or
damage.
NOTICE: If the temperature and pressure relief valve on the water
heater discharges periodically, this may be due to the
rmal expansion
in a “closed” water system. Contact the water supplier or local plumb-
ing inspector on how to correct thi
s. DO NOT plug the relief valve out-
let.
5. TANK —
Good maintenance requires that the tank be cleaned of de-
posits. Unless the water supply is very soft (0 to 5 grains hard-
ness), scale or lime deposits will accumulate in the tank. Hard
water scale is deposited at an increasingly high rate in proportion
to increased water temperature, and accumulation of these de-
posits may reduce efficiency and shorten the life of the water heater.
CLEANING THE TANK:
The water heater is not supplied with a clean-out provision on the tank.
To remove accumulated deposties from the tank, it is suggested that
a few gallons of water be drained from the water heater’s tank through
the drain valve every month to remove those deposits.
6. SEASONAL OPERATION —
If the water heater is to remain idle
for an extended period of time (60 days or more) the power to the
heater should be turned off. The water heater and piping should
be drained if they might be subjected to freezing temperatures. It
is recommended that the water heater’s operation is thoroughly
checked (by qualified personnel) before it is placed back in ser-
vice.
7. GENERAL—
Periodic cleaning of the equipment is recommend-
ed. Turn off power to heater. Remove any lint or dust that may
block the free passage of air through the control compartment. Do
not allow combustible materials such as newspapers, rags or mops
to accumulate near the water heater.
12
Maintenance
CAUTION
!
CAUTION
!
DANGER
!
13
.......
........
.......
Dip Tube
Grommet, Cold Side
Seal Ring, Cold Side
Nipple, 1" Close - Cold Side
Vacuum Valve Assembly
"Tee", 1" x 1" x 3/4" Long
Temperature & Pressure Relief Valve (T&P)
Nipple, 1" x 3" Long
Seal Ring, Hot Side
Seal Ring, T&P Valve
Grommet, Hot Side
Grommet, T&P Relief Valve
Upper Thermostat
Upper Protector
Screw #10 - 32 x 3/8"
Thermostat Insulation
Upper Access Panel
Screw #10 - 16 x 5/8"
Access Panel Cover Insulation
Upper Access Panel Cover
Element Gasket
Heating Element
Lower Thermostat
Lower Protector
Lower Access Panel Cover
Seal Ring - Drain Valve
Drain Valve
Access Panel Cover
Element Gasket
Heating Element
A
ccess Panel Cover
Access Panel Cover Insulation
Screw #10 - 16 x 5/8"
Lower Access Panel
Heating Element
Element Gasket
Ground Connection
Terminal Block
Control Circuit Fuse Block
Transformer
Ground Connection
Dryfire Protection Switch
Element Fuse Block
Contactor
Element Fuse Block
Contactor
Element Fuse Block
Contactor
Insulation
Insulation
.......
........
.......
Reducer Bushing
Insulation
Insulation
Insulation
Insulation
Thermostat Insulation
Replacement Parts
The following Parts are required for Normal Maintenance for all Models:
SP610070 1
7
/8” Socket Wrench for Element Head
SP310060 Element Gasket
All other Parts can be ordered by providing the following information:
1. Description of Part(s), such as:
2. Quantity of each part required.
3. Complete model number and name of the water heater.
4. Serial Number of water heater
5. Specify the voltage and KW rating.
6. Address Parts orders to your distributor or dealer.
13
How to Obtain Service Assistance
1. Should you have any questions about your new water heater,
or if it requires adjustment, repair, or routine maintenance, it is
suggested that you first contact your installer, plumbing con-
tractor or previously agreed upon service agency. In the event
that the firm has moved, or is unavailable, refer to the tele-
phone directory commercial listings or local utility for qualified
service assistance.
2. Should your problem not be solved to your complete satisfac-
tion, you should then contact the Manufacturer’s National
Service Department at the following address:
2600 Gunter Park Drive
Montgomery, Alabama 36109-1413
Phone: 1-800-432-8373.
When contacting the manufacturer, the following information
should be made available:
a. Model and serial numbers of the water heater as shown on the
rating plate attached to the jacket of the heater.
b. Address where water heater is located and can be seen.
c. Name and address of installer and any service agency who
performed service on the water heater.
d. Date of original installation and dates any service work was
performed.
e. Details of the problem as you can best describe them.
f. List of people, with dates, who have been contacted regarding
your problem.
System Sentinel® System
This water heater is supplied with the System Sentinel® System. The system consists of an element diagnostic panel utilizing light emitting diodes
(L.E.D.). The L.E.D.’s are lit only when the thermostat(s) is calling for element operatio
n. This diagnostis system has L.E.D.’s corresponding to the
number and location of heating elements and are energized w
hen the elements are operating. An unlit L.E.D pinpoints the exact location of a non-
functioning element, making eleme
nt operation diagnosis simple and positive.
CAUTION
!
* For your safety, DO NOT attempt repair of Thermostats, High Limit Controls or any other control component. Refer repairs
to qualified service personnel.
15
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