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PREMIER E SERIES DUAL CAPACITY INSTALLATION AND MAINTENANCE MANUAL
WATER TANK REFILL
1) Close the drain valve to the water heater.
2) Open the cold water supply to the tank.
3) Open the hot water faucet in the house to bleed air from the system. Close when full.
4) Depress the handle on the pressure relief valve to bleed any remaining air from the tank
then close.
5) If so equipped, unscrew the indicator plug on the motor end of the pump (located in the Premier E
unit) until all air is purged from the pump, then tighten the plug. Use vent couplings to bleed air
from the lines.
6) Carefully inspect all plumbing for water leaks and correct as required.
7) Before restoring electrical supply to the water heater, adjust the temperature setting on
the tank.
• On tanks with both upper and lower elements, the lower element should be turned down to
the lowest setting, approximately 100°F. The upper element should be adjusted to 120°F to
130°F. Depending upon the specific needs of the customer, you may want to adjust the
upper element differently.
• On tanks with a single element, lower the thermostat setting to 120°F.
8) After thermostat(s) is adjusted, replace the access cover and restore electrical supply to the water
heater.
DESUPERHEATER START UP
CAUTION:
Never operate the DHW circulating pump while dry.
1) Make sure that any valves in the desuperheater water circulating circuit are open.
2) Turn on the Premier E unit to first stage heating.
3) The DHW pump should be running. Be sure the disable switch for the DHW pump (SW4) is ON.
The DHW OFF LED on the unit should not be illuminated.
4) The temperature difference between the water entering and leaving the desuperheater should be
5°F to 15°F. The water flow should be approximately 0.4 gpm per ton of nominal cooling.
5) Allow the unit to heat water for 15 to 20 minutes to be sure operation is normal.
6) When the pump is first started, open the inspection port (if equipped) until water dribbles out, then
replace. Allow the pump to run for at least five minutes to ensure that water has filled the circula-
tor properly.
DESUPERHEATER NOTE
When servicing a unit’s refrigeration circuit, it is always good practice to disable the desuperheater
pump. This can be accomplished by using the DHW pump disable switch located on the front of the
unit cabinet near the LED annunciator panel. The red DHW OFF LED will illuminate, indicating the
DHW pump is disabled.
NOTE:
Do not run DHW pump while dry. If the unit is placed in operation before the desuperheater
piping is connected, be sure that the pump switch is set to the OFF position.
GENERAL
Be sure the available power is the same voltage and phase as that shown on the unit serial plate.
Line and low voltage wiring must be done in accordance with local codes or the National Electric Code,
whichever is applicable.
Initial
Desuperheater
Start Up
Electrical
Connections
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