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2. RECIRCULATION MODE
TO POOL ROOM
EXHAUST TO OUTSIDE
FROM POOL ROOM
FROM POOL ROOM
Ø
FRESH AIR FROM OUTSIDE (CLOSED)
Ø
Ø
OFF
ON
NOTE:
The external low voltage
contacts on a pool unit
control the Ventilation/
Recirculation Damper only,
not low/high speed control.
TO POOL ROOM
EXHAUST TO OUTSIDE
1. VENTILATION MODE
Ø
FRESH AIR FROM OUTSIDE
FROM POOL ROOM
ON
ON
FROM POOL ROOM (CLOSED)
3. DEFROST MODE
TO POOL ROOM
FROM POOL ROOM
FRESH AIR FROM OUTSIDE (CLOSED)
Ø
FROM POOL ROOM
EXHAUST TO OUTSIDE
ON
ON
Ventilation Mode
In ventilation mode, both motors are running and air is
being exchanged with the outside through the supply
and exhaust ducts.
Recirculation Mode
In recirculation mode the supply motor continues to run
and a damper moves to block off air entering from
outside, drawing air instead from the conditioned
space. The exhaust to outside motor is OFF when in
recirculation mode.
*NOTE: "Defrost" light is illuminated during
"Recirculation Mode", indicating damper direction.
Defrost Mode
In defrost mode both the supply and exhaust motors
run to draw air through the heat exchange cores. This
mode is automatic and does not require field
adjustments. Defrost light on side of cabinet illuminates
to indicate defrost operation.
Ducting Requirements & Mode of Operation