Hubbell Electric Heater Company J25 User manual

INSTALLATION, OPERATION AND MAINTENANCE
MANUAL FOR
COMPACT POINT-OF-USE
ELECTRIC WATER HEATER
2018Edition
BASE MODEL “J25”

2
HUBBELL ELECTRIC HEATER COMPANY
P.O. BOX 288
STRATFORD, CT 06615
PHONE:
[phone]
FAX:
[phone]
INTERNET:
http://www.hubbellheaters.com
-- IMPORTANT --
Always reference the full model number and serial number when calling the factory.
The following information should be noted at time of installation and retained for future
reference.
Serial No.:
Date Installed:
Dealer's Name:
Address:
City and State:

3
WARNING / CAUTION
1. Please read all instructions prior to installing water heater.
2. Tank is to be completely filled with water and all air is to be vented before energizing.
3. Due to the rigors of transportation, all connections should be checked for tightness
before heater is placed in operation.
4. Safety relief valve must be installed in tapping provided.
5. The refractory material used in heating elements may absorb some moisture during
transit, periods of storage, or when subjected to a humid environment. This moisture
absorption may result in a cold insulation resistance of less than one (1) megohm. If this
heater has been subjected to the above condition, the heating element must be checked
for insulation resistance before energizing. A low megohm condition can be corrected by
removing the terminalhardware and baking the element in an oven at 350°F - 700°F for
several hours or until the proper megohm reading is obtained.
6. KEEP AWAY FROM LIVE ELECTRICAL CIRCUITS.
Do not perform any maintenance or replace any components inside the control panel
with the high voltage power supply turned on. Under certain circumstances, dangerous
potentials may exist even when the power supply is off. To avoid casualties, always turn
the power supply safety switch to off, turn the charge or ground the circuit before
performing any maintenance or adjustment procedure.
7. This appliance is designed to store water heated only by the electrical elements
provided, at temperature of not more than 194°F and pressures of not more than 150
psi. Heat input from any external or additional source will void the warranty.
8. The design anticipates the proper installation and care in use of the product. There is a
risk of property damage and personal injury inherent in these or any hot water system.
The Company cannot supervise the installation and therefore make it a specific
condition of the warranty that the customer will supervise the installation and use of
this product to be sure they are performed in accordance with safe guidelines and
proper local or national codes. Generalized instructions and procedures cannot
anticipate all situations. For this reason, only qualified installers should perform the
installations. A qualified installer is a person who has licensed training and a working
knowledge of the applicable codes regulation, tools, equipment, and methods necessary
for safe installation of an electric resistance water heater. If questions regarding
installation arise, check your local plumbing and electrical inspectors for proper
procedures and codes. If you cannot obtain the required information, contact the
company.

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Table of Contents
SECTION I - GENERAL INFORMATION .................................................................................................... 5
GENERAL DESCRIPTION......................................................................................................................... 5
CONSTRUCTION........................................................................................................................................ 6
TANK ....................................................................................................................................................... 6
TANK CONNECTIONS.......................................................................................................................... 6
HEATING ELEMENT............................................................................................................................. 6
ELETRONIC TEMPERATURE CONTROLLER................................................................................... 6
HIGH TEMPERATURE CUT-OFF SWITCH ........................................................................................ 6
SAFETY RELIEF VALVE ...................................................................................................................... 6
OUTER SHELL AND INSULATION..................................................................................................... 6
WALL BRACKETS (OPTIONAL) ......................................................................................................... 6
COVER LEGS (OPTIONAL) .................................................................................................................. 7
SECTION II – INSTALLATION GUIDELINES............................................................................................ 7
UNPACKING AND INSPECTING THE HEATER ................................................................................... 7
WATER HEATER PLACEMENT............................................................................................................... 7
PIPING INSTALLATION............................................................................................................................ 7
FILLING THE HEATER ............................................................................................................................. 8
ELECTRICAL INSTALLATION................................................................................................................ 8
FINAL CHECKS.......................................................................................................................................... 9
SECTION III – CONTROLLER OPERATION............................................................................................. 11
ABOUT THE CONTROLLER................................................................................................................... 11
POWERING UP YOUR WATER HEATER FOR THE FIRST TIME..................................................... 11
THE HOME SCREEN................................................................................................................................ 11
BUTTON OVERLAY................................................................................................................................ 11
VACATION OVERRIDE .......................................................................................................................... 11
CHILD LOCK ............................................................................................................................................ 12
CONTROLLER SETTINGS...................................................................................................................... 12
TEMPERATURE SETTING...................................................................................................................... 12
DIAGNOSTICS.......................................................................................................................................... 13
DIFFERENTIAL ........................................................................................................................................ 14
AUDIBLE ALARM.................................................................................................................................... 14
DISPLAY.................................................................................................................................................... 14
DEFAULTS................................................................................................................................................ 14
DEGREES................................................................................................................................................... 14
DISABLE ERRORS................................................................................................................................... 14
PEAK DEMAND ENERGY CONTROL .................................................................................................. 14
TROUBLESHOOTING.............................................................................................................................. 15
SECTION IV - SCHEDULED MAINTENANCE AND OPERATION........................................................ 16
OPERATION OF HEATER....................................................................................................................... 16
FREEZING................................................................................................................................................. 16
DRAINING TANK..................................................................................................................................... 16
QUARTERLY INSPECTION.................................................................................................................... 16
ANNUAL INSPECTION ........................................................................................................................... 17
LONG TERM SHUT DOWN .................................................................................................................... 17
EMERGENCY............................................................................................................................................ 17
SECTION V – TROUBLESHOOTING......................................................................................................... 18
SECTION VI - SERVICING & REPLACEMENT OF PARTS.................................................................... 19
HIGH TEMPERATURE CUT-OFF SWITCH .......................................................................................... 19
HEATING ELEMENT............................................................................................................................... 20
RELIEF VALVE ........................................................................................................................................ 21
ELECTRONIC TEMPERATURE CONTROLLER (ETC)....................................................................... 21
SECTION VII – WARRANTY...................................................................................................................... 22
LIMITED WARRANTY AND TANK REPLACEMENT POLICY......................................................... 22
LIMITED WARRANTY - TEN YEAR..................................................................................................... 22
TANK REPLACEMENT POLICY - TEN YEARS................................................................................... 22
CONDITION AND LIMITATIONS.......................................................................................................... 22
HOW TO OBTAIN SERVICE ASSISTANCE.......................................................................................... 23

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SECTION I- GENERAL INFORMATION
GENERAL DESCRIPTION
This manual describes a packaged electric water heater that is a stationary, self-contained unit.
The complete assembly consists of the storage tank, immersion electric heating element, digital
controller, hi-limit thermostat with manual reset, safety relief valve, and any other required
electrical operating control. An exploded view of the assembly, calling out the major
components, can be found in Figure 1. Optional equipment may be supplied with your unit.
Please consult the product drawing or visit our website, listed at the end of this manual, for details
specific to your assembly. The unit is factory assembled, insulated, jacketed, wired, tested, and
ready for electrical and plumbing service connections.
Figure
1: Part Locations
High Temperature
Cut-Off Switch
Insulation Board
Temperature &
Pressure Safety
Relief Valve
Cold Water Inlet
Hot Water Outlet
Heating Element
Digital Controller
Cord only supplied
on 120 VAC models
1440 kW or less
Drain
Optional
Power On/Off

6
CONSTRUCTION
TANK
The 2.5-gallon storage tank is constructed of 304 stainless steel and is designed for a maximum
allowable working pressure of 150 psi (300 psi TP).
TANK CONNECTIONS
The heater is supplied with separate ½” FNPT cold water and hot water connections. A ¾-inch
FNPT connection is located on the top of the heater for mounting a combination safety
temperature and pressure relief valve. A drainage system, consisting of 1/8” NPT piping,
connects from the bottom of the tank and runs out of the front of the enclosure. See drawing for
locations and sizes.
HEATING ELEMENT
The water heater is supplied with a heating
element, shown in Figure 2, with energy
ratings specific to its model number,
composed of a copper sheathed element with
a 1”-11 ½ NPSM brass plug. The energy
ratings specific to the individual heating
element can be found in Table 1.
ELETRONIC TEMPERATURE CONTROLLER
The temperature of the water in the heater is regulated by the
adjustable, digital control, shown in Figure 3, located behind the
enclosure’s front cover. The controller is set at the factory to
maintain a water temperature of 120°F to reduce the risk of scald
injury. The controller has a settable range from 50oF (10oC) to
160oF (71oC). See Section III for a complete description of the
controller operation.
HIGH TEMPERATURE CUT-OFF SWITCH
The high temperature cut-off switch is a surface mounted safety
device that that is factory set at 190oF. In the event of an over-
temperature condition, the thermostat will disengage the power from
the system. If this switch operates, refer to Section V for
troubleshooting. If a dangerous situation is indicated, a qualified
service person should be called to find the source before the unit
is operated again.
SAFETY RELIEF VALVE
The Safety Relief Valve is a safety device mounted on the top of the water heater. In an over
temperature or over pressure situation, the valve opens up and allows the water to escape to
prevent physical damage to the unit. Ensure the relief valve discharge pipe is aimed towards
a drain and away from contact to prevent injury.
OUTER SHELL AND INSULATION
The tank body is enclosed in 1/4-inch thick closed cell insulation.
The tank and insulation is protected by the enclosure assembly.
WALL BRACKETS (OPTIONAL)
Wall support rails, shown in Figure 4, are available
for easy wall mounting of the heater.
Figure
2: Heating Element
Figure
4: Support Rails
Wall Support Rails
Figure
3: Electronic
Temperature Controller

7
COVER LEGS
Adjustable, stainless steel cover legs, shown in Figure 5, are available inlieuof wall support
rails.
ON/OFF POWER SWITCH (OPTIONAL)
Rocker switch is available to power the unit down externally, shown in
Figure 1.
ELECTRIC CORD (OPTIONAL)
For 120V models 1440W or less, an electric cord can be installed and plugged into a standard
15A wall socket.
SECTION II– INSTALLATION GUIDELINES
WARNING / CAUTION
DO NOT TURN ON THE ELECTRIC POWER SUPPLY to this equipment until heater is
completelyfilled with water and all airhas been released. If the heater is NOT filled with water
when the power is turned on, the heating elements will burn out.
For protection against excessive pressures and temperatures, local codes require the
installation of a temperature-and-pressure (T&P) relief valve, certified by a nationally
recognized laboratory, that maintains periodic inspection of production of listed equipment of
materials, meeting the requirements for Relief Valves and Automatic Gas Shutoff for Hot
Water Supply Systems. ANSI Z21.22-1971. A relief valve is designed to discharge
excessively hot water. THE CUSTOMER IS RESPONSIBLE TO PROTECT PROPERTY
AND PERSONNEL FROM HARM WHEN THE VALVE FUNCTIONS.
All water heaters have a risk of leakage at some unpredictable time. IT IS THECUSTOMER'S
RESPONSIBILITY TO PROVIDE A CATCH PAN OR OTHER ADEQUATE MEANS, SO
THAT THE RESULTANT FLOW OF WATER WILL NOT DAMAGE FURNISHINGS OR
PROPERTY.
The warranty provided assures replacement within its terms, but specifically does not warrant
against consequential damage caused by failure to follow these instructions.
UNPACKING AND INSPECTING THE HEATER
1. Remove the model CE25 from the shipping carton and visually inspect for any sign of
damage. A damaged unit should not be installed, but returned to the factory for
replacement.
WATER HEATER PLACEMENT
•Locate the heater in a clean, dry location nearest to the point of most frequent hot water
use.
•Secure the water heater. Optional wall support rails or cover legs may be utilized if
supplied.
•The water heater should be protected from freezing and waterlines should be insulated
to reduce energy and water waste.
•Leave sufficient room to service the heater.
•Do not install in an area where flammable liquids or combustible vapors are present.
PIPING INSTALLATION
NOTE: The most effective means for preventing deterioration from accelerated corrosion due
to galvanic and stray current, is the installation of dielectric fittings/unions. The installation of
these fittings is the responsibility of the installing contractor.
Figure
5: Cover Legs

8
Figure
6: Temperature and Pressure Relief Valve
1. Connect the cold water inlet and hot water outlet to the appropriate connections; refer
to Figure 8.
2. Provide a shut off valve in the cold water line. Mark for future emergency use.
3. If pressure reducers or any other restrictions are put in the cold water line, special
precautions should be taken. Consult your local plumbing inspector.
4. Install the combination temperature and pressure safety relief valve, shown in Figure 6,
in the tapping provided. Note that this is required by law for safety considerations.
5. Install a relief valve overflow pipe to a nearby floor drain.
CAUTION: No valve of any type should be installed between the relief valve and tank
or in the drain line.
FILLING THE HEATER
1. Completely close the drain valve.
2. Open the highest hot water faucet to allow all air to escape from piping.
3. Open the valve to the cold water inlet and allow the heater and piping system to
completely fill, as indicated by a steady flow of water from the open faucet.
ELECTRICAL INSTALLATION
NOTE: THESE INSTRUCTIONS ONLY APPLY TO MODELS WITHOUT AN
ELECTRICAL PLUG
1. Enter the electrical service entrance with properly sized feeder leads, conforming to the
voltage stamped on the rating plate. Note: A separate fused branch circuit, conforming
to local or National Electric Codes, must be provided by a qualified electrician.
2. Connect these power leads to wires enclosed in junction box with wire nuts. Refer to
Figure 7 before wiring.
CAUTION: There is a risk of electric shock in an ungrounded service. It is critical that
this unit be wired with a power supply that has a service ground wire available. Be sure
to connect the ground wire to the ground lug provided inside the enclosure.
3. Mark the electrical shut off clearly for future emergency use.
4. Field connections with aluminum conductors must use connectors approved for copper
to aluminum connection.
5. All other electrical connections are made at the factory; therefore, no other electrical
connections are necessary.
Temperature Probe
Outlet to Floor Drain
Manual
Release
Lever
Install into Provided
Coupling

9
FINAL CHECKS
1. Check all connections for tightness.
2. Complete following checklist to ensure that all the above steps are completed:
a. Unit unpacked and checked for damage.
b. Heater properly located.
c. Heater properly secured to wall (If option was chosen).
d. Cold water line connected to cold water inlet on tank.
e. Shut-off valve installed in cold water line.
f. Hot water line connected to hot water outlet on tank.
g. Temperature and pressure relief valve installed.
h. Relief valve overflow line installed.
i. Water heater filled with water.
j. _____Power cord plugged into properly rated and grounded outlet. (For 120V
models 1440kW or less)
k. Power leads connected inside electrical enclosure from separate fused
circuit. (For all 208/240V and 277V models as well as 120V models
above 1440kW)
l. Ground wire connected.
3. After the water is heated for the first time, monitor the water temperature as described
in Section IV, Quarterly Inspection.
2 1
4 3
HI-LIMIT W/RESET
ELECTRONIC
TEMPERATURE
CONTROLLER
LOWER TEMPERATURE
SENSOR
WIRE NUT
HEATING ELEMENT
E
D
BA
G
F
F
C
POWER SUPPLY
H
TANK GROUND
A) 18 AWG STRANDED RED
B) 18 AWG STRANDED BLUE
C) 12 AWG STRANDED YELLOW
D) 12 AWG STRANDED RED
E) 12 AWG STRANDED BLUE
F) 12 AWG SOLID BLACK
G) 12 AWG SOLID RED
H) 12 AWG SOLID GREEN
(PLUG OPTION AVAILABLE FOR
120V UNITS 1440 Kw OR LESS)
Figure 7 - Wiring Diagram
Table 1: Heating Elements
Heating Element Part Number
Volts
Watts
Watt Density
C1315-750A
120
750
32
C1315-1000A
120
1000
42
C1315-1440A
120
1440
60
C1315-2000A
120
2000
84
C1315-1000S
240
1000
42
C1315-1500S
240
1500
63
C1315-2000S
240
2000
84

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**NOTE: ONLY TEMPERATURE AND PRESSURE RELIEF VALVE SUPPLIED BY
MANUFACTURER**
Temperature & Pressure
Relief Valve
Relief Valve
Discharge Pipe
Piping to Hot
Water
Piping from
Cold Water
Inlet Valve
Drain
Figure
8: Recommended Installation Diagram
Dielectric
Union
Dielectric
Union

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SECTION III – CONTROLLER OPERATION
ABOUT THE CONTROLLER
The Hubbell Electronic Temperature Controller provides the user with the ability to control
and customize the operation of their water heater. The 4-digit display shows the status of the
water heater, and can display useful information such as current temperature conditions inside
the tank, error notifications, and more. It allows basic customization, such as mode and
temperature differential, and display options. Once the setup is complete, the water heater is
automatic in operation and will maintain a full tank of water at the temperature setting of the
controller.
POWERING UP YOUR WATER HEATER FOR THE FIRST TIME
When the unit is first powered up, the default home screen is shown. This screen shows the
temperature setpoint (e.g. 120).
THE HOME SCREEN
The home screen provides a quick reference to the status of the water heater, showing either
the setpoint temperature or the actual temperature of the tank, denoted by “b” preceding the
temperatures. The temperature readouts can be displayed in Fahrenheit or Celsius. There is a
power indicator to show if the element is on. This indicator blinks when the element is heating
properly.
BUTTON OVERLAY
The button overlay provides the user with a means to alter the configuration settings and
control the operation of the water heater. To access the button overlay, the front cover of the
unit must be removed. WARNING: Button overlay will be operated while circuits are live. A
brief description of the basic functionality of each button is provided below. Detailed
descriptions of how to use the buttons to perform certain functions is provided throughout this
manual.
Power: Used for putting the water heater into standby mode,
will be displayed. Used in the operations menu to navigate backwards. Used to
cancel setpoint selection without saving.
Mode: Used for navigating the options menu. Serves as a cancel button in certain
menus.
Up: Used for increasing numeric settings. Can also be used to scroll up when
changing options. Can be held for auto scroll.
Down: Used for decreasing numeric settings. Can also be used to scroll down
when changing options. Can be held for auto scroll.
Away: Used for entering / exiting vacation override. Can also be used to set / unset
user lock.
VACATION OVERRIDE
Vacation mode deactivates the water heater for extended periods of time by overriding the
current mode the water heater is set to. This is useful for saving energy when the water heater
will not be used for a period of several days. The unit will maintain a water temperature of
50°F to prevent freezing.
Tank Temperature
Temperature Setpoint
Element Power

12
To activate vacation override, press the button on the controller. The display will show
“A-07”, indicating the default vacation length of 7 days. The minimum vacation length is 2
days and the maximum is 99 days. Use the or buttons to adjust the desired length of
time to use vacation mode. The water heater will exit vacation mode automatically one day
before the specified time period has elapsed. It is designed this way such that when the user
returns from being away, hot water will be available.
Once the desired time period is displayed, press the button to save the selection. The
water heater will now be in vacation mode. The display will show “A-##”, where “##” is the
number of days remaining in vacation mode period.
To manually cancel or end vacation mode, press the button once.
CHILD LOCK
Child Lock is essentially a button locking mechanism. If the user wishes, they may set the
child lock, which will disrupt any future attempt to change modes, change the setpoint, etc.
The user will be locked out of performing any function on the device until the child lock is
released.
To activate the Child Lock feature, press and hold the button until “chLd” is displayed
on the screen. The controller is now locked.
To deactivate the Child Lock, press and hold the button until “un” is displayed. You will
be returned to the home screen.
CONTROLLER SETTINGS
The Hubbell Electronic Temperature Controlleris equipped with various customizable options
and settings. A brief overview of each option / setting is listed below:
TEMPERATURE SETTING
The temperature setpoint represents the desired approximate temperature of the water inside
the heater. The setpoint may be adjusted to your liking. There are pre-defined temperature
limits to prevent extremely hot or freezing water in the unit and surrounding piping.
To change the temperature setpoint for hot water output, from the home screen, press the
AND buttons on the controller. The display will flash the new temperature setpoint as
the AND buttons are pressed. Once the desired temperature setting has been reached,
allow the screen to time out after 5 seconds. The new setpoint can also be saved by pressing
the AND buttons. Pressing will cancel the changes without saving. The display will
now show the newly set temperature (e.g., “116”).

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To access the options menu, from the home screen, press and hold the button until the display
reads “diF” (differential), this is the first selection in the options menu.
To navigate the options menu, continue to press the button to cycle through the available
options until the desired option is displayed. When the option to be changed is displayed, press
the or buttons to enter the edit mode. When the display is flashing, the option may be
altered by pressing the or buttons until the desired choice is displayed. To set the change,
press the button, or press the button. The change will be made and the controller will
return the user to the options menu. To exit the menu at any time, let the display time out after 5
seconds or press the button.
DIAGNOSTICS
Enabling this option causes the controller to perform various checks, including making sure each
element works correctly. Any errors will be displayed after all of the tests are complete. The
software version, such as , is displayed before normal operation resumes.

14
DIFFERENTIAL
A temperature differential represents how far the water temperature can fall before the water
heater must call for heat again. For example, if the setpoint is 120°F and the differential is 10°F,
then after satisfying at 120°F, the water temperature must fall to 110°F before the water heater
will call for heat.
AUDIBLE ALARM
The audible alarm beep is programmed to sound every 30 seconds whenever an error had been
detected. To turn the audible alarm on or off, in the edit mode press the or buttons to
alternate between “On” and “OFF”.
DISPLAY
The display setting provides the ability to select whether the home shows the setpoint
temperature (diSS) or the measured temperature (diSt) inside the tank.
DEFAULTS
Enabling this option will reconfigure the controller to factory defaults. The factory defaults are
shown below.
Temperature Setpoint: 120°F
Differential: 30°F
Audible Alarm: Off
Display: Show Temperature Setpoint
Degrees: Fahrenheit
Disable Errors: All Enabled
To set the unit back to factory defaults, in the edit mode press the or buttons to alternate
between cancelling the operation, “no” or resetting to defaults, “YES”.
DEGREES
The degrees option provides the user with the ability to switch between standard and metric
temperature readings. The “dEgF” choice will set the temperatures to be displayed in Fahrenheit,
and the “dEgC” choice will set the temperatures to be displayed in Celsius.
To change the display units, in the edit mode press the or buttons to alternate between
degrees Fahrenheit, “dEgF” or degrees Celsius, “dEgC”. To set the change, let the display
time out after 5 seconds, press the button, or press the button.
DISABLE ERRORS
The disable errors option allows for the use of external timer controllers to inhibit operation of
the elements during certain times without removing power to the controller or otherwise affecting
operation. If no external control is used, these errors should remain enabled.
PEAK DEMAND ENERGY CONTROL
Hubbell has been designing and programming streamlined and sophisticated energy
controllers in conjunction with electric utility thermal storage programs for over 30 years,

15
satisfying the utility’s need for peak control while also offering a great deal of flexibility for
the end user. Programs for the ETC are determined by the electric utility. Once programmed,
the ETC automatically controls the water heater, saving energy without any worry or
inconvenience to the user. If for some reason the user wishes to override the system, an
override may be accomplished with the simple push of a button.
During Peak Demand time periods, “P” will be displayed before the setpoint temperature. The
controller could be programmed with a customer override allowing the peak period to be
temporarily overridden for a predetermined duration. If the customer override is available
simply press the MODE button to allow full operation. “C” will be displayed while in override
mode.
Peak Mode
Customer Override
TROUBLESHOOTING
CAUTION: Make certain power to heater is OFF before removing jacket access panel(s) for
any reason. FOR QUALIFIED SERVICE PERSONNEL ONLY.
ERROR CODES
When the Hubbell Electronic Temperature Controller detects an abnormal condition, the
display will alternate between the home screen, ERR, and then the error code below.
Error Code
Possible Cause
Possible Service Required
ETC-H20
(Temperature Sensor) 1. Temperature sensor issue 2. Controller sensing issue
*Check wire connections
*Replace or repair probe
*Replace or repair controller
F-02
(Temperature Sensor) 1. Temperature sensor issue 2. Controller sensing issue
*Check wire connections
*Replace or repair probe
*Replace or repair controller
F-04
(Heating Element) 1. Heating element malfunction 2. Controller output issue
*Check wire connections
*Replace heating element
*Replace or repair controller
CAUTION: For your safety, DO NOT attempt repair of electrical wiring, thermostat(s),
heating elements or other operating controls. Refer repairs to qualified service personnel.

16
SECTION IV - SCHEDULED MAINTENANCE AND OPERATION
WARNING / CAUTION
Before performing any maintenance procedure,make certain power supply is OFF and cannot
accidentally be turned on.
Exposure to 125°F or hotter water can cause scalding injuries. Appropriate caution must be
taken when using hot water. Special supervision must be given to those who cannot react
quickly such as children, invalids, or elderly persons.
OPERATION OF HEATER
The water heater is automatic in its operation. It will maintain a full tank of water at the
temperature setting of the thermostat. The water heater should not be turned on without first
making sure that the tank is full of water and that all air has been released.
FREEZING
The tank should be fully drained in the event the electricity has been turned off and there is a
danger of freezing.
DRAINING TANK
1. Drain Tank as follows:
a. Shut off power to water heater.
b. Close the valve on the cold-water line to the heater.
c. Remove drain plug attach a hose to the drain coupling at the base of the water heater,
see Figure 1 for drain location. Direct hose towards a drain.
d. Open hot water faucet or lift the test lever on the Pressure Relief Valve to admit air into
the tank.
NOTE: Teflon tape (NOT PIPE DOPE) should be used when reinstalling the drain
plug
QUARTERLY INSPECTION
1. Water temperature regulation.
a. Let water heater completely heat to a designated thermostat setting.
b. After thermostat satisfies (i.e., when the decimal before the temperature display on the
controller is not blinking), draw water from heater.
c. Measure the maximum temperature with an accurate thermometer.
d. If the temperature is above the safe limits for your circumstances call a service man to
adjust or replace the control.
2. Lift test lever on relief valve and let water run through valve for a period of approximately
10 seconds. This will help flush away any sediment that might build up in water
passageways.
3. Inspect element flange for leakage as follows:
a. Shut off Power Supply.
b. Remove element housing cover.
c. Visually inspect heating element for evidence of leaks.
d. Rub finger around heating element and check for any evidence of moisture. If moisture
is present or a water drip is observed, follow procedure outlined in Section VI.
4. Check for loose electrical connections. Tighten as necessary.

17
ANNUAL INSPECTION
1. Flush tank as follows:
a. Shut off power to water heater.
b. Close the valve on the cold-water line to the heater.
c. Remove drain plug and attach a hose to the drain coupling at the base of the water
heater, refer to Figure 1 for drain location. Direct hose towards a drain.
d. Open hot water faucet or lift the test lever on the Pressure Relief Valve to admit air into
the tank.
e. Install drain plug.
f. Open valve on cold water line to heater.
g. Monitor water flow from hot water faucet. Once a steady flow is established, indicating
air is removed from system and tank is completely filled, close hot water faucet.
h. Turn power supply on.
NOTE: Teflon tape (NOT PIPE DOPE) should be used when reinstalling the drain
plug
LONG TERM SHUT DOWN
1. If the water heater is to remain idle for an extended period of time, the power and
water to the heater should be turned off to conserve energy.
2. The water heater and piping should be drained if they might be subjected to freezing
temperatures.
3. After a long shutdown period, the heater's operations and controls should be checked
by qualified service personnel.
4. Make certain the water heater is filled before placing it in operation.
EMERGENCY
1. Should the heater be subject to flood, fire, or other damaging conditions, turn off the
power and water to the heater.
2. DO NOT place water heater in operation again until it has been thoroughly checked
by qualified service personnel.

18
SECTION V– TROUBLESHOOTING
Troubleshooting instructions can be found in Table 2.
Table 2: Troubleshooting
Symptom
Probable Cause
Corrective Action / Remedy
No hot water
Circuit breaker tripped at
source
Reset circuit breaker.
High limit switch tripped
Reset high limit switch.
Loose wires
Tighten wires.
Heating element inoperable
Check heating element operation by
clamping an ammeter around each
wire to the element. The ampere
reading should agree with the
nameplate ‘AMP’ figure.
Low line voltage
Have source electrical system
checked by an electrician.
Faulty thermostat
If controller display is not lit and
power is available at the controller,
check wire connections then replace
controller.
Faulty temperature sensor /
controller
If the temperature indicated by the
controller when set to display the
tank temperature does not match the
actual temperature of the water
(within ±5°F), replace controller
and/or temperature sensor.
Incorrect setpoint (too low)
Increase the setpoint.
Water temperature
always below
setpoint
temperature
Faulty temperature sensor /
controller
If the temperature indicated by the
controller when set to display the
tank temperature does not match the
actual temperature of the water
(within ±5°F), replace controller
and/or temperature sensor.
Heating element inoperable
Check heating element operation by
clamping an ammeter around each
wire to the element. The ampere
reading should agree with the
nameplate ‘AMP’ figure.
Low line voltage
Have source electrical system
checked by an electrician.
Incorrect setpoint (too low)
Increase the setpoint.
Heater improperly sized
Verify heater is properly sized for the
flow rate and temperature rise of
your system. Replace elements with
proper size as necessary.
Relief valve
discharges
continuously
Excessive temperature or
pressure in tank
Temperature and pressure relief
valves are made to operate if the
water temperature exceeds 210°F or
water pressure exceeds the pressure
rating of the safety relief valve. If
trouble is excessive temperature, then
thermostat is not shutting off at the
right setting and thermostat must be
replaced.

19
Mounting Nuts
SECTION VI- SERVICING & REPLACEMENT OF PARTS
WARNING / CAUTION
Before servicing or replacing any part, make sure to turn the power supply switch to the OFF
position.
HIGH TEMPERATURE CUT-OFF SWITCH
1. Disconnect power from unit.
2. Remove access cover.
3. Remove insulator board by removing two (2) mounting nuts.
4. Disconnect the four (4) 12 gauge wires from the high temperature cutoff switch.
NOTE: Tag wires with corresponding terminal of high temperature cut-off switch to
facilitate wire installation on replacement switch.
5. Remove switch from assembly.
6. Install new high limit temperature cut-off switch by performing above steps in reverse
order; refer to Figure 7 in Section II.
Insulator Board
12 Gauge Wires
Figure
9: Hi-Limit Switch
Figure
10: Hi-Limit Replacement

20
Heating Element
Terminals
Figure
11: Heating Element Terminals
HEATING ELEMENT
1. Disconnect power from unit.
2. Shut off incoming water supply.
3. Attach hose to drain connection.
4. Lift manual release lever on relief valve to
let air into system or break union on
outgoing water line.
5. Drain water from tank.
6. Remove enclosure front cover.
7. Disconnect the wires from the heating
element terminals.
8. Unscrew heating element from tank coupling.
9. Withdraw element assembly.
10. Ensure there is an O-ring on the new element and tank connection is clean and free of
debris.
11. Insert new heating element. Thread sealant not required.
12. Rewire element; refer to Figure 7 in Section II.
13. Reinstall enclosure front cover.
14. Install drain plug.
15. Fill tank and check around element for any leaks.
Element Assembly
Tank Coupling
Figure
12: Remove Heating Element