WattMaster Water Source Heat Pump, Installation & Operation Manual

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Section 1
WattMaster WHP
1-14
Design Guide
Water Temperature Alarming
The controlling water temperature is monitored to prevent it from exceeding both a user
defined High and Low Alarm Limit. If either limit is exceeded for a user defined length of
time, an alarm is generated and the compressor output is de-activated. If the high limit is
exceeded, the heat addition outputs are de-activated and if the low limit is exceeded, the
heat rejection outputs are de-activated. The alarming and shutdown only pertains to the
controlling water temperature. This does not affect the pump operation.
If a external manual alarm reset button is connected between ground and input #5, All
outputs are turned off and ALL timers are reset. This forces the loop controller to stage
off. This reset WILL shut down the pumps and force them to restart!
Fire Alarm
If the Fire Alarm is activated on input #1 of the Analog Input Expansion Board (Contact
OPENS for Alarm!) then ALL outputs and timers are reset and held off for the duration of
the Fire Alarm signal.
If the Fire Alarm is not required, input #1 of the Analog Input Expansion Board must
have a shorting wire to ground to allow the equipment to operate.