6 7
8
9
10
1
2
3
4
5
HEATER CONTROLS
Appearance may vary by model
1 POOL / SPA SELECTOR
– Selects either pool or spa thermostat.
2 UP ARROW
– Increases temperature setting. (Maximum setting is
104
o
F)
3 DOWN ARROW
– Decreases temperature setting. (Minimum
setting is 45
o
F)
4 HEATING INDICATOR LIGHT
– Indicates unit is heating.
5 MODE SELECTOR
– Used to select between Heating and Off.
6 POOL INDICATOR LIGHT
– Indicates heater is referencing spa
thermostat.
7 SPA INDICATOR LIGHT
– Indicates heater is referencing pool
thermostat.
8 LED DISPLAY
– Displays water temperature when no keys are
being pressed. Displays desired temperature when UP ARROW
or DOWN ARROW is pressed. Also displays operational,
programming, and fault codes as applicable.
4
HEATING TIPS
Heating in Cooler Weather...
Late night and early morning, generally being the coolest times of the day, are least
efficient for heating. For most efficient heating operation, heat pumps should be
timed to operate during the warmest, daylight portions of the day. Please set water
pump and heat pump controls accordingly.
Pool/Spa Blankets
A “solar” blanket will significantly reduce your heating bills. Check with the in-
stalling dealer to see if your heat pump was sized to be used in conjunction with
a blanket. Blanketed pools will typically lose only 3 - 4° of heat per night versus
8 - 10° overnight with an un-blanketed pool. Reductions of 40-60% on heating
bills can be achieved by using blankets.
Pool and Spa Combination Heating...
Everything stated for heating a pool applies for heating a spa—only the volume of
water being heated is different. Your heat pump comes equipped with two thermo-
stats. One thermostat is for the pool and the other is for the spa. Simply position the
pool and spa isolation valves as directed by your installer; select the appropriate
thermostat (pool or spa), whichever you are heating, and with electrical power and
water flow supplied to the heater, the water will be maintained at set point.
Spa Heating & Spa Setback Option
Air blowing into your spa, while it is being brought to temperature, will very
often neutralize or partially counteract the heat being put into the spa by the
heater; this added heat loss equates to increased time to bring your spa to desired
temperature. When heating a spa, be sure to turn off the air blower. Air induced
through the spa jets should also be eliminated, during warm-up, whenever pos-
sible.
If your heater is being used to only heat a spa, the POOL thermostat can be used as
a setback control: simply set the pool control at a point 10-15º F below desired spa
heat temperature and select the pool thermostat. This method allows the spa–when
not in use–to be held at a heated temperature, but somewhat lower than normal spa-
use temperature. One would want to blanket the spa if using this setback method.
Using spa setback will result in reduced warm up periods over full, cold starts.
WARNING !
Failure to heed the following may result in
permanent injury or death.
Improperly used, Pool-Spa blankets can become a drowning risk to people
and pets. Blankets are not safety covers. They are not designed to support
the weight of a person or pet. Never enter a pool until the blanket is completely
removed (under no circumstances should anyone swim under the blanket).
Follow all safety recommendations of the blanket manufacturer.
11
Summary of Contents for AT115
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