Heat Controller Water Source Heat Pump - Manual (Page 78)

Section 3 WattMaster WHP
3-30 Programming
Setpoint Screen #9
Setpoint Screen #10
Setpoint Screen #11
WHP Loop Setpoints
Lead/Lag Changeover
Switch After xxx Hrs
The two pumps will switch after this programmed amount of
time so that each pump accumulates roughly the same
number of run time hours. If a pump is currently running and
this time period is exceeded, the changeover will occur as
soon as pump run time exceeds the setpoint. The current
pump will shut off and the standby pump will start at the
same time.
Minimum Default Maximum
Changeover 1 Hour 40 Hours 240 Hours
WHP Loop Setpoints
Water Loop Proof Of
Flow Pr. SP: xxx PSI
If you attached a Pressure Sensor for proof of flow instead of a
differential pressure contact closure for proof of flow, the
controlling pressure is programmed on this screen. This
Setpoint represents the amount of pressure that you set to prove
water flow exists in the system. Otherwise, this screen will not
appear.
Minimum Default Maximum
Flow PR. SP 0 5 PSI 50 PSI
If you configured the system for Variable Speed Pumping with
a Pressure Sensor for proof of flow, the controlling pressure,
deadband and control adjust time period are programmed on
this screen. Otherwise, this screen will not appear. WHP Loop Setpoints
Pressure SP: xxx PSI
SP Deadband: xx PSI
Adjust Time: x.x Sec
Minimum Default Maximum
Pressure SP 1 PSI 40 PSI 50 PSI
SP Deadband 1 PSI 2 PSI 50 PSI
Adjust Time 0.1 Seconds 1.0 Seconds 25 Seconds