Water Flow Rates

Maintain water flow rates as indicated. Please note, these specifications relate to the heat pump only. Code-specified whole system turnover rates must be satisfied.

NOTICE

Failure to heed the following may result in damage to equipment.

 

  • Water flow exceeding maximum flow rates will negatively affect the total pool filtration performance and may damage the heat pump. This will not be covered under the equipment warranty.

Water Source

MODEL SOURCE HEAT EXCHANGER TYPE FLOW RATES
MINIMUM MAXIMUM
WS03 Source-Side Titanium ThermoLink®

20 GPM (75.7 L/min)

70 GPM (265 L/min)
Cupronickel

10 GPM (37.9 L/min)

14 GPM (53 L/min)
Pool / Spa* Titanium ThermoLink®

30 GPM (113.6 L/min)

70 GPM (265 L/min)
WS05 Source-Side Titanium ThermoLink®

20 GPM (75.7 L/min)

70 GPM (265 L/min)
Cupronickel

10 GPM (37.9 L/min)

18 GPM (68 L/min)
Pool / Spa* Titanium ThermoLink®

30 GPM (113.6 L/min)

70 GPM (265 L/min)
WS10 Source-Side* Titanium ThermoLink®

30 GPM (113.6 L/min)

70 GPM (265 L/min)
Cupronickel

30 GPM (113.6 L/min)

54 GPM (204.4 L/min)
Pool / Spa* Titanium ThermoLink®

30 GPM (113.6 L/min)

70 GPM (265 L/min)

SunPower

MODEL SOURCE HEAT EXCHANGER TYPE FLOW RATES
MINIMUM MAXIMUM
  SP05 Source-Side Titanium ThermoLink®

20 GPM (91 L/min)

70 GPM (265 L/min)
Spa Side* Titanium ThermoLink®

30 GPM (113.6 L/min)

70 GPM (265 L/min)

* Head Loss - 30 GPM = 1.5 PSI, 70 GPM = 8.2 PSI

 

 

Please note -

If minimum flow rates are not met, heat pump output is reduced and performance will suffer. Internal safety devices may deactivate the heat pump with the following errors:

  • HIGH PRESSURE FAULT
  • HP5 SYSTEM LOCKOUT
  • LOW PRESSURE FAULT
  • LP5 SYSTEM LOCKOUT
  • Operate water filtration devices per manufacturer's specifications. Dirty filters can cause a reduction of water flow to the heat pump. An increase of 7-10 psi (48 to 69 kPa) higher than the clean filter pressure typically reduces flow rates. This requires the filter to be cleaned or back-washed.
  • Keep baskets free of debris. A large quantity of debris in the pump and skimmer baskets can reduce water flow.
  • Check for improper valve settings. A partially closed valve after the filter, or a full-open bypass around the heat pump, will cause insufficient water flow through the heat pump.
  • The maximum operating pressure is 50 psi (345 kPa) unless a special "high-pressure" unit has been ordered. The maximum operating pressure for special high-pressure units is 450 psi (3102 kPa). These specifications relate to the heat pump only.
  • The heat pump is not intended to be installed on high pressure applications.
  • Code-specified whole system turnover rates must be satisfied.