Calorex DIGITAL LOGIC AT800 Owner Operational Manual page 4

"Digital Logic" Digital Control Panel Information
HEATER ON/OFF:
To start the heater press this button and it's green light will come on. To disable the
heater press this button and its green light will go off.
THERMOSTAT BUTTONS:
Pressing the + button will raise the set temperature. Pressing the - button will lower the
set temperature. When either button is pressed the LED display will begin to flash. The
flashing numbers indicate the thermostat setting.
MODE SELECT BUTTONS-POOL or SPA: The heater has two thermostat modes for
two different desired temperature settings, one for pool mode and one for spa mode.
If you do not have a spa use the pool mode only. If you do have a spa, you can connect
two Jandy™ motorized plumbing valves. Therefore, when you select either mode the
motorized valves will turn to isolate the heater to either the pool or spa. NOTE: There
is a 30 second compressor when switching pool/spa modes.
"OPTIONAL" WATER PUMP TIME CLOCK OVERRIDE OPERATION When the T.C.O. but-
ton is set to the ON mode, the Time Clock Override feature is designed to start the
water pump whenever the pool requires heat. Once the pool is up to the set tempera-
ture the heater will stop and then 5 minuets later the water pump will stop. When this
button is set to the OFF mode, the heater will operate only when the water pump is
running during the timed period set on the water pumps time clock.
NOTE: The time clock override works best if used during cooler weather conditions
where the pool is loosing more than 8 to 10 degrees over night or when the pool is
being heated from "dead cold".
NOTE: If the time clock override starts the water pump and the thermostat does not
continue to call for heat for at least 5 minuets, the control will shut the water pump and
heater off. Thereafter, it will not re-attempt to start the water pump for 4 hours. This 4
hour delay can be bypassed by pressing the T.C.O. button off then back on.
NOTE: When the T.C.O. button is activated while in "spa mode" the water pump will
run the entire time you are in sap mode. When you switch back to pool mode there will
be a 5 minute delay before the water pump shuts off. The T.C.O. option is built into the
heater at the factory and can not be added later.
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