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Installation
Instructions
INSTALLATION
CHECKLIST
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1. Tank location:
- Does room size require Iouvered door, duct kit, or similar ventilation7 10' x 10' x 7' (700 cu. ft.) or 240 square inches
(0.15 m2)open air-flow area needed.
- Back of unit away from wall by 7 inches (17.5 cm), and sides have at least 7 inches (17.5 cm) clearance. (6 inches
(15.2 cm) clearance for earthquake strap installations, with additional clearance on the opposite side of the unit.)
- Front of unit is free and clear.
- Is the water heater level? If no, add shims under the base of the unit.
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2. Verify Air Filter is installed. (Located in packaging).
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3. Plumbing connections:
- Does not prevent air filter removal.
- No leaks after filling the tank with water, either when water is flowing or not.
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4. Condensate lines are in place:
- Main Draintubing installed.
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5. Temperature and pressure-relief
valve is working and drain line completed per local code.
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6. Electrical verify 208/240 VAC to L1 and L2 at tank.
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7. Electrical connection does not prevent air filter removal.
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8. Verify control panel displays 120°F (49°C)Hybrid mode. Assist user in how to adjust temperature and modes (see
"About the Water Temperature Setting" section on page 7).
WHAT TO EXPECT FOR "NORMAL STARTUP" IN HYBRID MODE
After the unit has been installed, with all electrical and water connections secure and checked, then the unit should be
filled with water (vent tank by opening a hot water faucet somewhere in home to allow tank to fully fill with water). Once
tank is full and power is energized, you may experience the following:
Elapsed Time
HEWH Actions
Comments
0 to 2 minutes
Unit will go through
self-check.
2 to 22 minutes
Compressor ond fon turn on
22 minutes and
beyond
Compressor and fan turn off,
heating elements turn on. After
initial heat-up, elements turn off
and compressor
turns on.
This 2-minute
off-time prevents compressor
damage.
This 20-minute
period is used to ensure the tank
is full of water
(Dry-fire prevention algorithm).
The water heater is operating
in Hybrid mode.
Quickly provides initial amount of hot water, then
switches to efficient heat pump for majority of
heating.
NOTE: The heat pump operating range is 35°F to 120°F (2°C to 49°C). If the ambient temperature is outside of this range,
the heat pump will turn off and the electric elements will be used until the ambient temperature returns to within the
operating range.
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