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Typical HD16 (64-90 kW) Plumbing Connections
(Front View)
SECTION III – SCHEDULED MAINTENANCE AND OPERATION
WARNING / CAUTION
Before performing any maintenance procedure, make certain the power supply is turned OFF
and cannot accidentally be turned on.
MAINTENANCE AND OPERATION
The water heater is automatic in its operation. It will maintain a full tank of water at the
temperature setting of the controller. 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 if there
is danger of freezing.
CONTROLLER OPERATION
NOTE: All controller variables come preset from the factory to include a preset temperature
of 185°F.
1. To turn unit on or off:
a. Press the ON/OFF button on the display module.
b. Note that the controller will resume its last mode of operation if power is
disconnected.
2. To change setpoint temperature (the temperature is fully adjustable from 32° to 194°F
(0°-90°C):
a. Press the UP and DOWN arrows simultaneously to enter setpoint change mode.
b. Press the UP or DOWN button to change the setpoint temperature.
c. Pressing and holding the UP or DOWN button will scroll through the setpoint
temperature.
d. To leave setpoint change mode
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