Winter Setting; Water Quality - Polytropic PAC 16 Manuel D'instructions

Abnormal pressure
If the pressure is too high or too low (yellow or red area), it indicates that the
water flow circulating inside the heat pump is not correct.
You need to adjust the water flow by opening or closing the by-pass valve. Open
little by little it if the pressure is in the yellow area and close it little by little if the
pressure is in the red area until it remains stable in the green area.
Frequency of settings
The optimum water flow through the pool heat pump depends mainly on the
water temperature and to a lesser extent on the ambient air temperature.
Ideally the settings should be done:
• When the pool heat pump is turned on and water is cold.
• When the pool temperature is increasing.
• When the desired water temperature is reached.
Thereafter the flow does not need to be regulated any further. Simply check the
pressure once in a while to ensure that the pool heat pump is working normally
and that the water flow hasn't changed.

Winter setting

When you are winterising your pool system, you must:
• Turn the pool heat pump off
• Close downstream and upstream valves of the by-pass system.
• Drain the exchanger to prevent any risk of freezing.
Open completely the
exchanger tank before closing them.
• Cover the heat pump with a water-proof cover.
A special cover designed for each heat pump model can be provided
as an option.

Water quality

The water quality must be within the following limits
• Chlorine concentration less than 2.5 ppm
• pH level from 6.9 to 8
downstream and upstream valves to empty the heat
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