Pentair HP 230 - Manual (Page 11)

THERMOSTAT SETTING
There are no temperature reading numbers printed on the thermostat dial due to calibration changes from unit to
unit. The demand for exact temperatures should be regulated by using a high quality thermometer right in the pool
water. Normal temperatures for pools are 78 to 82 degrees F. Spa temperatures are 98 to a maximum of 104
degrees F.
You should place a high quality "tie on type" or a "floating type" thermom-
eter directly in the pool or spa water, so you can determine what tempera-
ture that is suitable to you. Check the pool temperature occasionally during
the heat up time until it has reached the temperature you desire.
Then go to the heater and turn thermostat counter clockwise, to the left,
away from warmer, SLOWLY until the unit just shuts off. Therefore, the
thermostat will be set exactly at the current temperature shown on your
floating thermometer. Make a mark on the thermostat dial so you know the
approximate setting that you desire.
Now the heater will come on each day when the circulation pump starts, then it will bring the pool up to that set
temperature. The pool will lose some heat overnight but will come back up to temperature with minimal delay. If
you have a pool and spa combination, you can set the spa thermostat the same way once you are in the spa heating
mode. When adjusting the thermostat, remember that it will take some time for the water temperature to reach a
higher setting. The cooler the outside air, the longer heat up time needed.
MAKE SURE YOU ADJUST THE THERMOSTAT BACK FROM THE HIGHEST POSITION SET DURING
THE START UP PROCEDURE OR THE POOL MAY GET TOO WARM. BE SURE TO RESET THE CIRCU-
LATION PUMP TIMER FOR 6 TO 18 HOURS PER DAY OR AS NEEDED, ACCORDING TO THE SIZE OF
YOUR POOL AND WEATHER CONDITIONS. COLDER CLIMATES WILL REQUIRE MORE TIME.
LARGER POOLS WILL REQUIRE MORE TIME. EXPOSED POOLS WILL REQUIRE MORE TIME. WIN-
TER TIME OPERATION WILL REQUIRE MORE OPERATIONAL TIME EACH DAY.
11
If the pool temperature on the thermometer reads 80 degrees F, and
you turn the thermostat to the "left" until the heater shuts off, the
thermostat will now be set at 80 degrees F.
Thermometer
104 F
Max.
50 F
Min.
+ or - 1.5 F
CAUTION
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