Aquacal Water Source WS03 Installation Manual page 90

Cupronickel Tube in Tube Exchanger
1. Disconnect the plumbing to the heat pump at connection unions (removal is counter-
clockwise).
2. Place a garden hose into the inlet side of the heat pump; wrap a clean rag around the hose to
form a temporary seal.
3. Turn on the garden hose water supply.
4. Allow water to run through the heat exchanger for 2-3 minutes; fresh water should be seen
exiting the pool's out-port.
5. Place a garden hose into the outlet side inlet of the heat pump; wrap a clean rag around the
hose to form a temporary seal.
6. Turn on the garden hose water supply.
7. Allow water to run through the heat exchanger for 2-3 minutes; fresh water should be seen
exiting the pool's in-port.
8. Place an air hose into the water inlet of the heat pump; wrap a clean rag around the hose to form a temporary
seal.
9. Push all water from the water circuit using compressed air at approximately 50 psig (446 kPa). The residual
water should be forced out of the heat pump's water outlet.
10. Allow compressed air to blow into the heat pump inlet for at least 15-20 seconds after the water stops coming
out.
11. Repeat process on the outlet side.
12. Partially reconnect plumbing connection unions.
13. Winterizing is complete.
14. When ready to use the heat pump again, hand-tighten connection unions. Reconnect electrical power, and set the
operating mode on the heat pump. Activate the filter pump.
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Cupronickel
(Orientation
depends
on model)