Flow Controller 3
R e v. : F e b u r a r y 9 , 2 0 1 6
8
G e o t h e r m a l H e a t P u m p S y s t e m s
NOTES: 1. Piping is shown schematically
. Actual pipe diameter and layout must be determined before installation.
2. Pressure drop calculation must be made to verify that parallel pumping arrangement provides enough head to deliver design
flow rate to each unit
when all units are operating. 3. Flow Controller should be mounted close enough to unit to maintain short (approx. 10 ft., 3m) hose kit from Flow Controller
to unit.
4.
All units must include P/T
ports for flow rate measure and balancing.
Multiple Units on Common Loop Field
Parallel Pumping
Arrangement
Heat Pump
Heat Pump
Heat Pump
Field-supplied
full-port ball valve
for balancing
Field-supplied check valve to
prevent short-cycling
Each heat pump must include P/T
ports to verify flow rates
Wa
ter Out
W
ater In
Wa
ter Out
Wa
ter In
LW
T
EWT
Flow
Controller
Flow
Controller
Flow
Controller
Heat Pump
Wa
ter Out
Wa
ter In
Figure 8b: Parallel Unit Piping 2
Piping Installation
