Adjusting Water Flow Using Δt (Delta-T) - Aquacal TropiCal T035 Operation Manual

MODEL HEAT EXCHANGER TYPE
TC500 Titanium Tube-in-Tube
TC1000 Titanium ThermoLink
TC1500 Titanium ThermoLink
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). These specifications relate to the heat
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pump only.
Code-specified whole system turnover rates must be satisfied.
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2.6 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.
Installed temperature ports are required to perform the following procedures.
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These ports are typically located on the pool in and pool out water lines approximately six inches away from the
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heat pump.
PLEASE NOTE -
The installation of temperature ports is required for all commercial applications.
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The installation of temperature ports is strongly recommended for residential installations.
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See "Temperature Port Kit (# STK0096)" on page 54.
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20 GPM (75.7 L/min)
®
30 GPM (113.6 L/min)
®
30 GPM (113.6 L/min)
FLOW RATES
MINIMUM
45 GPM (170 L/min)
70 GPM (265 L/min)
70 GPM (265 L/min)
MAXIMUM