Aquacal TropiCal T035 Operation Manual page 36

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6. Disconnect the plumbing to the heat pump at connection unions (removal is counter-
clockwise).
7. Allow water to drain completely from the heat pump. Expect to see a lot of water drain out at
first, and then a small amount to continue to drain out over a long period.
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 no stronger than 50
psig (446 kPa). The residual water should be forced out of the heat pump's
water outlet. Allow compressed air to blow into the heat pump inlet for at
least 15-20 seconds after the water stops coming out.
10. Repeat process on the outlet side of the heat pump.
11. Partially reconnect plumbing connection unions.
12. Winterizing is complete.
13. 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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