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Page 6
2.2 Heating Water
1) Heat pump's mode is set to "HEA".
2) Thermostat is set to desired water temperature.
3) Water pump's time clock is overridden to 24-hour operation. This is only necessary for an
initial startup. After the water reaches the desired temperature, the time clock can be reset
to a normal time frame operation.
4) Sufficient time is provided for heat pump to operate. The following calculations determine
how long it will take the heat pump to bring the water to temperature. The calculation is only
an approximation and varies per site condition. Additional heat pump runtime is needed to
compensate for cooling factors such as waterfalls, disappearing edges, fountains, etc.
1) POUNDS OF WATER
X
Length
Width
of Pool
of Pool
2) REQUIRED BTU'S
3) NUMBER OF HOURS
2.3 Cooling Water
1) Heat pump's mode is set to "COO".
2) Thermostat is set to desired water temperature.
3) Water pump's time clock is overridden to 24-hour operation. After the water reaches the
desired temperature, the time clock can be reset to a normal time frame operation.
4) Sufficient time is provided for heat pump to operate.
1) POUNDS OF WATER
X
Length
Width
of Pool
of Pool
2) REQUIRED BTU'S
3) NUMBER OF HOURS
HEATING TIME FORMULAS
X
X
Average
Gallons per
Depth of
Cubic Feet
Pool
-
Desired
Temp
Required
COOLING TIME FORMULAS
X
X
Average
Gallons per
Depth of
Cubic Feet
Pool
-
Current
Temp of
Water
Required
7.5
X
8.3
Pounds per
Gallon
X
Current
Total Pounds of
Temp of
Water to Heat
Water
÷
BTUs
BTU Output of
Heat pump
7.5
X
8.3
Pounds per
Gallon
X
Desired
Total Pounds of
Temp
Water to Heat
÷
370,000
BTUs
BTU Output of
Heat pump
=
Total Pounds of
Water to Heat
=
BTUs
Required
=
Total Hours
Required to Heat
Water
Figure 2
=
Total Pounds
of Water
to Cool
=
BTUs
Required
=
Total Hours
Required to Cool
Water
Figure 3
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