Manual
49-50300-2  15
TO FILL THE WATER HEATER
WARNING
 Risk of Unit Damage - The tank 
must be full of water before heater is turned on. 
The water heater warranty does not cover damage 
or failure resulting from operation with an empty or 
partially empty tank.
Make certain the drain valve is completely closed. 
Open the shut-off valve in the cold water supply line.
Open each hot water faucet slowly to allow the air to 
vent from the water heater and piping. 
A steady flow of water from the hot water faucet(s) 
indicates a full water heater.
F11” fault code during installation: If the unit is 
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tank with water (see above), then turn the power back 
on.
Note:  the DRY TANK DETECTION feature on tank is 
for the aid of installer and should NOT be used as the 
primary control to prevent operation with an empty or 
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NOTICE
Do not mis-wire electrical connections. 240VAC or 
208VAC must be applied across L1 and L2 wires as 
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to do so will VOID the warranty, and can result in 
120V applied to water heater, which may damage the 
compressor or other electrical components.
If a 4-conductor wire is supplied to the water heater, 
cap the neutral, and connect the remaining wires as 
illustrated.
NOTE REGARDING UTILITY POWER-MANAGEMENT 
DEVICES (Sometimes called Peak Load Reduction 
Switches):
Some power-management switching devices or even 
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from 240V to 120V during high-electricity-demand 
periods. These devices must be removed from the 
circuit providing power to the water heater because of 
the potential unit damage noted above. 
However, switching devices which cut power from 240V 
to 0V on a periodic basis are acceptable.
“bAd linE” fault code during installation:,I³E$GOLQ(´
is shown on the display, the unit is not receiving the 
correct voltage as a result of incorrect wiring. To correct 
this fault, turn the power off to the unit, correct the wiring 
issue, then turn the power back on.
RELIEF VALVE
WARNING
 Risk of Unit Damage - The 
pressure rating of the relief valve must not exceed 
150 PSI (1.03 kPa), the maximum working pressure 
of the water heater as marked on the rating plate. 
A new combination temperature and pressure-relief 
valve, complying with the Standard for Relief Valves 
and Automatic Gas Shut-Off Devices for Hot Water 
Supply Systems, ANSI Z21.22, is supplied and must 
remain installed in the opening provided and marked for 
the purpose on the water heater. No valve of any type 
should be installed between the relief valve and the tank. 
Local codes shall govern the installation of relief valves.
The BTUH rating of the relief valve must not be less 
than the input rating of the water heater as indicated 
on the rating label located on the front of the heater (1 
watt=3.412 BTUH).
Connect the outlet of the relief valve to a suitable open 
drain so that the discharge water cannot contact live 
electrical parts or persons and to eliminate potential 
water damage. 
Piping used should be of a type approved for hot water 
distribution. The discharge line must be no smaller than 
the outlet of the valve and must pitch downward from 
the valve to allow complete drainage (by gravity) of the 
relief valve and discharge line. 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.
CAUTION
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temperatures in this water heater, install temperature 
and pressure protective equipment required by local 
codes and no less than a combination temperature 
and pressure relief valve certified by a nationally 
recognized testing laboratory that maintains periodic 
inspection of production of listed equipment or 
materials, as meeting the requirements for Relief 
Valves and Automatic Gas Shutoff Devices for Hot 
Water Supply Systems, ANSI Z21.22. This valve 
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of the water heater. Install the valve into an opening 
provided and marked for this purpose in the water 
heater, and orient it or provide tubing so that any 
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above, or at any distance below, the structural floor, 
and does not contact any live electrical part. The 
discharge opening must not be blocked or reduced in 
size under any circumstances.
Installation Instructions
INSTALLATION INSTRUCTIONS










