C L I M AT E M A S T E R WAT E R - S O U R C E H E AT P U M P S
Tranquility
®
Large Water-to-Water (TMW) Series
R e v. : O c t o b e r 5 , 2 0 2 1
C l i m a t e M a s t e r Wa t e r-S o u rc e H e a t P u m p s
34
Control System, Cont’d.
Condenser Water Flow Sensor -
There is a differential
pressure sensor, which measures and displays pressure
drops across the condenser water main headers. If the
differential pressure drops below a predetermined setting
for a fixed period of time after the unit receives a “RUN”
input signal, the unit will not be allowed to run, and a Source
water flow alarm condition is displayed. This alarm condition
must be resolved and flow re-established, and a minimum
pressure differential acknowledged by the differential
pressure sensor. The alarm clears automatically; however,
the alarm condition is logged for permanent retention of the
most recent 100 alarms. This will constitute an “OK to RUN”
status. Alternatively, the controller can configure to accept a
differential pressure sensor indicating proper Source water
flow (refer to the wiring diagram), set to differential pressure
sensor.
Alarm Output -
The relay output contact is closed
whenever there is an active latching or non-latching alarm
condition present relative to a fault parameter.
TMW Status Output -
The relay output contact is closed
whenever all input signals to the unit are present and
normal, indicating the requirement for the unit to operate
when able.
