SHUT DOWN & FREEZE PROTECTION PROCEDURES
When shutting the unit down for the end of the swimming season you must consider some items to protect the unit from inclement weather. It is best in most situations to shut the unit off by turning the thermostat all the way down, to the "left". Leave power ,(circuit breaker), to the unit “on” unless the pool or spa water temperature drops below 50 degrees F. If you shut off the main power supply due to freezing conditions, be sure to preheat the compressor for 8 hours before attempting to start the heater.
SHORT TERM FREEZE PROTECTION PROCEDURES
When the outside air temperature is forecast to drop below 32 degrees F for a short time:
You should set the circulation pump timer to run 24 hours per day in order to circulate water through the unit and filtration system. Standing water inside the unit will freeze and damage the units heat exchanger and refrigerant system.
Shut the heat pump off and do not try to heat the pool during freezing temperatures. If the unit is left running it may ice up and the compressor will stop running. The defrost control inside the unit will shut the compressor off but allow the fan to run. The fan will circulate air through the unit to help defrost the evaporator air coil. If you know that the temperatures are going to be below 36 degrees F, you should eliminate the possibility of icing and just shut the unit off. Do not use the circuit breaker as the “on”/“off” switch, but keep the water pump running.
LONG TERM FREEZE PROTECTION / DRAIN VALVE INSTALLATION
If you live in a climate that has a seasonal swim season due to winter, you should follow these long term freezing precautions.
Spigot Type
Drain Valves
OUT
IN
Shut Off
Valves
Shut the water pump off. Close both shut off valves. Open both drains and allow water to exit. Use pressurized air on the water in spigot only, to force the rest of the water out the other spigot.
If you live in an area that experiences freezing tempera- tures, the heat exchanger/water coil and bypass plumbing must have all water removed to prevent damage to the heat pump system. This procedure should be done prior to the first freeze along with your other pool winterizing routine. When you drain the filter system and piping you should in- clude the heat pump as well.
There should be two spigot type drains plumbed into the heaters water in and water out piping. Place these valves as close to the heater and at the lowest point possible so as much water will drain as possible. Install two shut off valves on the water in and out lines as shown here. The rest of the water should be blown out with pressurized air to insure all water is removed. A antifreeze designed for pool equipment may be used, see a local pool professional.
CAUTION
Do not add isolation valves unless you
intend to clear the heat exchanger of water with pressurized air. Stagnate water left in the heat exchanger can cause corrosion.
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CAUTION
You may shut the circuit breaker off for the season as long as you remember to preheat the compressor next season before start up see start up procedures.