Document LTM0883 rev 2e

 

Winterizing

Failure to properly winterize the heat pump as needed may result in serious equipment damage.

 

WARNING

Failure to heed the following may result in injury or death.

 

  • Deactivate all electrical power to heat pump before performing hard freeze procedures.

NOTICE

Failure to heed the following may result in damage to equipment.

 

  • Failure to winterize heat pump may result in serious equipment damage. Freeze damage is not covered under the heat pump warranty.
  • While the plumbing connections are in the winterized condition (not fully tightened), it is imperative that water not run through the heat pump. Loss of water through loose plumbing connections may result in damage to circulation pump, pool and spa structures, and other equipment.

Light Freeze Conditions

A light freeze is when the ambient air temperature falls below 32 degrees Fahrenheit for less than 8 hours. Typically during light freeze conditions circulating (or moving) water will not freeze. Temporarily activate the filter pump for continuous operation during light freeze conditions.

Hard Freeze Conditions

A hard freeze is when the ambient air temperature falls below 32 degrees Fahrenheit for more than 8 hours. In areas where this condition is prevalent and sustained, the heat pump MUST be winterized for hard freeze conditions. Follow the correct procedure depending on the type of heat exchanger found in the heat pump.

Identify Exchanger:

  1. Deactivate all electrical power to heat pump.
  2. Deactivate filter pump.
  3. Remove front access panel. See "Access Panels"
  4. Identify heat exchanger from illustrations in this section. Then follow procedure for the appropriate heat exchanger.

Titanium ThermoLink® Exchanger (with no Drain)

No Drain

  1. Reinstall front access panel.
  2. Disconnect the plumbing to the heat pump at connection unions (removal is counter-clockwise).
  3. 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.
  4. After heat pump has fully drained, partially reconnect plumbing connection unions.
  5. Winterizing is complete.
  6. When ready to use heat pump again, hand-tighten connection unions. Reconnect electrical power, and set the operating mode on the heat pump. Activate filter pump.

 

Titanium Tube-in-Tube Exchanger

Titanium Tube-in-Tube

  1. Reinstall front access panel.
  2. Disconnect the plumbing to the heat pump at connection unions (removal is counter-clockwise).
  3. 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.
  4. Place an air hose into the water inlet of the heat pump; wrap a clean rag around the hose to form a temporary seal.
  5. Push all water from the water circuit using compressed air no stronger than 50 psig. 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.
  6. Repeat process on the outlet side of the heat pump.
  7. Partially reconnect plumbing connection unions.
  8. Winterizing is complete.
  9. When ready to use heat pump again, hand-tighten connection unions. Reconnect electrical power, and set the operating mode on the heat pump. Activate filter pump.