47
Tranquility
®
D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e
R e v. : 1 0 M a r c h , 2 0 1 5
w w w. c l i m a t e m a s t e r. c o m
Units Having LT1 Lockouts In Heating with
Modulating Valve (Open Loop)
B-L
When running unit in Y1 and Y2, if valve position moves slightly below 50% open, there is a greater impact on GPM.
Putting a pressure-reducing valve ahead of heat pump will prevent valve from moving below 50% open. Set pressure
reducing valve to 30 PSI.
Water Out
Shut Off
Ball Valves
for Isolation
Water In
Well
Tank
Boiler
Drains
Pressure-
Reducing
Valve -
30 PSI
50 - 70 PSI
Typical Household
Pressure for Wells
