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his brief information is provided as an aide to installers, service personnel, and owners. The intent of this
section is to provide rapid access to (only) very basic operational information. Individuals who will be
routinely using, installing, maintaining and servicing this heat pump are strongly encouraged to read this
entire manual. If uncertain about any instructions given herein, AquaCal Customer Support (800-786-7751) should
be contacted for additional information.
How to Operate the Controls - Pool or Spa
1. Turn the selected pool or spa thermostat dial clockwise to its highest setting.
2. The heat pump will start and begin to heat the pool or spa.
NOTE: The heat pump has a time delay so if it shuts down for any reason, it will not
restart for approximately five (5) minutes.
3. The typical spa may take several hours to initially heat up, while a pool may take several days. Heating
time will depend on the volume of water, water temperature, and the climatic conditions at the time of
start-up. (Also see Calculating Initial Heating Time.)
4. When the pool or spa reaches the desired temperature, slowly rotate the thermostat knob
counterclockwise until the heat pump (just) stops. The thermostat is now set to automatically
maintain this temperature.
QUICK START & STOP
Manual Switching From Pool to Spa
NOTE: It is best to stop the pump while repositioning valves.
1. Open spa valves and close pool valves.
2. With the spa filter pump running for at least five minutes, move the POOL/OFF/SPA toggle switch
from the Pool Setting to the Spa Setting.
3. Turn the Spa thermostat clockwise until it stops (104 F).
4. The typical spa may take several hours to initially heat up. Heating time all depends on the volume of
water, water temperature and the climatic conditions at the time of start-up.
5. When the spa reaches the desired temperature (104 F is maximum), slowly rotate the thermostat
knob counterclockwise until the heat pump (just) stops. The spa thermostat is now set to
automatically maintain this temperature any time the spa thermostat has been selected.
Start Up
1. Set pump controls to allow for temporary, continuous operation.
2. With pump OFF, position water valves to heat the POOL or SPA.
3. Rotate both thermostats counterclockwise to lowest temperature setting.
4. Depending on valve settings (per #2, above), position the POOL/OFF/SPA toggle switch to point at
either the POOL or SPA thermostat knob.
5. Ensure power is supplied to the heater, then start the water pump; the POWER and FLOW lights
should now both be lit. Permit the water pump to operate for five (5) minutes before proceeding
To Stop the Heat Pump
The unit can be stopped by switching off the electrical supply or by setting the desired temperature lower
than the actual water temperature.
Time Clock Programming
Once the heat pump has brought the pool or spa up to temperature, it will be necessary to reset the pump
controls. Be sure to allow enough running time for the heat pump to replace lost heat. This time will vary
depending upon the time of year. Colder months require longer running times—usually eight to twelve hours.