Unit Exterior Description; How A Heat Pump Works - Calorex Aquatherm DIGITAL LOGIC AT1000 Owner Operational Manual

Unit Description
THERMOSTAT
CONTROLS
POOL/SPA
POOL/SPA
SELECT SWITCH
OFF/ON
SWITCH
LED READOUT
"OPTIONAL"
TIME CLOCK
OVERRIDE
SWITCH
WATER OUT
PIPE
REFRIGERANT
SERVICE VALVES
DO NOT OPEN !

How A Heat Pump Works

A swimming pool & spa heat pump utilizes proven refrigerant technology to capture the heat in the
outside air and transfers it to the pool water. Refrigerant is used because of its ability to absorb and
transfer heat energy. The fan circulates air through the outer evaporator air coil that acts as a heat
collector. The liquid refrigerant in the air coil absorbs the
available heat in the ambient air, transforming it into a
gas. The refrigerant gas is then
pumped into the compressor.
When this warmed gas is com-
pressed, it intensifies or concen-
trates the heat, like a magnifying
glass in the sun.
This intensely hot gas is then
pumped into the heat ex-
changer condenser, where the
actual heat transfer takes place.
As the pool water passes
through the heat exchanger, the
hot gas gives up its heat to the cooler pool wa-
ter. The refrigerant returns to a liquid state and
is pumped through the expansion valve then
into the evaporator air coil to start the process all
over again.
How Efficient Is It ?
This graph is a operational cost comparison for equal
amounts of pool heat. As you can see heat pump is
the most efficient way to heat your pool.
Compared to L.P. gas heaters, a heat pump produces
5 to 6 times more heat for every $1.00 you spend
on operation.
AIR DISCHARGE FAN
WARNING: ROTATING BLADE KEEP
HANDS & HAIR CLEAR!
SERIAL
NUMBER
PLATE
INSTALLATION
WATER IN
ELECTRICAL
PIPE
SUPPLY WIRING
ACCESS PANEL
"KEEP OUT"
WARM
AIR
FAN
EVAPORATOR
Page 3
WARNING
DANGER FROM ELECTRICAL
SHOCK & ROTATING FAN !
CAUTION: MORE THAN ONE
DISCONNECTION MAY BE
REQUIRED TO ELIMINATE ALL
POWER TO THIS UNIT INCLUDING
POWER TO THE OPTIONAL TIME
ELECTRICAL
PORTS
COMPRESSOR
WARMED
GAS
COOL
AIR
AIR COIL
EXPANSION
VALVE
SHUT OFF ALL POWER
BEFORE SERVICING !
CLOCK OVERRIDE !
POOL
FILTER
HEAT EXCHANGER
CONDENSER
WATER
PUMP