Pentair ThermalFlo - Manual (Page 23)

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ThermalFlo Installation and User’s Guide
Section 3
Operating ThermalFlo
This section describes how to operate the ThermalFlo heat pump.
Initial Start-up Precautions
CAUTION — Do not use this heat pump if any part has been under water. Immediately call a qualified service
technician to inspect the heater and replace any part of the control system which has been under
water.
CAUTION — Keep all objects off the top of the heat pump. Blocking air flow could damage the unit and may void
the warranty.
ATTENTION
After starting the ThermalFlo heat pump, please note that there is a 5 minute delay before the compressor begins operation.
The heat pump display will show the remaining delay time in minutes and hundredths of a minute.
Be sure that there is water in the pool and that the surface level is above the skimmer or other inlets of the pool’s filter system.
The pool pump must be on and water flowing through the heat pump for it to operate.
With any new pool or spa installation, operate the filter pump with the heat pump off long enough to completely clean the
water. This will remove any installation residue from the water. Clean the filter at the end of this operation before starting the
heat pump. When raising the temperature of a cold pool, program the time clock to run the pump continuously. This lets the
filter system and heat pump operate continuously until the water reaches the temperature setting on the temperature control.
When that happens, the heat pump will automatically shut off, but the filter pump will keep running.
Figure 14.