Adjusting Water Flow Using Δt (Delta-T) - Aquacal WATER SOURCE WS03 Installation Manual

MODEL SOURCE
Source-Side
WS05
Pool / Spa
Source-Side
WS10
Pool / Spa
SunPower
MODEL SOURCE
Source-Side Titanium ThermoLink
SP05
Spa Side
PLEASE NOTE -
If minimum flow rates are not met, heat pump performance is reduced and performance will
suffer. Internal safety devices may deactivate the heat pump with the following errors:
HIGH PRESSURE FAULT
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HP5 SYSTEM LOCKOUT
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LOW PRESSURE FAULT
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LP5 SYSTEM LOCKOUT
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Operate water filtration devices per manufacturer's specifications. Dirty filters can cause a reduction of water flow
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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.
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Check for improper valve settings. A partially closed valve after the filter, or a full-open bypass around the heat
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pump, will cause insufficient water flow through the heat pump.
The maximum static pressure (or operating pressure) is 50 psi (345 kPa) unless a special "high-pressure" unit has
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been ordered. These specifications relate to the heat pump only.
Code-specified whole system turnover rates must be satisfied.
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1.4.g Adjusting Water Flow Using ΔT (Delta-T)
The Delta-T is the temperature difference between the water temperatures entering and leaving the heat pump.
The equipment can be fine-tuned for maximum performance by balancing water flow rates to maintain an
ideal ∆T.
The adjustment procedure must be completed with the unit in heating mode.
PLEASE NOTE -
See "Temperature Port Kit (# STK0096)" on page 78.
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1. Adjust the thermostat to its lowest setting with the unit in heating mode.
2. Deactivate the water filtration pump.
HEAT EXCHANGER TYPE
®
Titanium ThermoLink
Cupronickel
®
Titanium ThermoLink
®
Titanium ThermoLink
Cupronickel
®
Titanium ThermoLink
HEAT EXCHANGER TYPE
®
®
Titanium ThermoLink
FLOW RATES
MINIMUM
20 GPM (75.7 L/min)
10 GPM (37.9 L/min)
30 GPM (113.6 L/min) 70 GPM (265 L/min)
30 GPM (113.6 L/min) 70 GPM (265 L/min)
30 GPM (113.6 L/min) 54 GPM (204.4 L/min)
30 GPM (113.6 L/min) 70 GPM (265 L/min)
FLOW RATES
MINIMUM
20 GPM (91 L/min)
30 GPM (113.6 L/min) 70 GPM (265 L/min)
MAXIMUM
70 GPM (265 L/min)
18 GPM (68 L/min)
MAXIMUM
70 GPM (265 L/min)
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