Dehumidifier Connected for Independent
Operation with Vertical Air Handler/Furnace
CONTROLS CONNECTION (Independent
Operation)
The dehumidifier controls must interface with the
main air conditioning unit. This interface is
required to do the following:
•
Turn off the dehumidifier if the air conditioning
unit is in the heating mode
•
Turn off the dehumidifier if the air conditioning
unit is in the cooling mode
•
Turn off the air conditioner fan, during
dehumidifier operation, if the FAN switch on
room thermostat has been placed in the ON
position for continuous operation
Five wires run from the air handler/furnace to the
dehumidifier to accomplish this interface, per Unit
Connection Diagram (Independent Operation)
and per the following:
•
Connect the C, W, and Y terminals on the
dehumidifier unit to the corresponding
terminal on the air conditioner. Do not
disconnect any of the existing wires from the
C, W, or Y terminals on the air handler/
furnace.
•
Disconnect the existing thermostat wire from
the G terminal on the air handler/furnace.
Using a wire nut, splice this wire to a new wire
and then connect to the G1 terminal on the
dehumidifier.
•
Connect the G2 terminal on the dehumidifier
to the G terminal on the air handler/furnace.
All controls wiring, including connection to a
remote dehumidistat, must be 18-22 gauge and
must meet national and local electrical codes.
Entry into the dehumidifier unit is through a 7/8"
diameter hole located on the air entry end of the
unit, adjacent to the unit mounted dehumidistat.
Note that this is separate from the power entry.
Unit Connection Diagram
(Independent Operation)
REMOVE
JUMPER ON S1
& S2 WHEN
OPTIONAL
DEHUMIDISTAT
IS USED
WALL-MOUNTED
DEHUMIDISTAT
(OPTIONAL)
6
• Dehumidifier
suspended from
ceiling
• Piped parallel
to air handler
• Independent operation (furnace blower and
dehumidifier do not operate at the same time)
DEHUMIDIFIER
AIR HANDLER/FURNACE
MODEL NUMBER
S1-DEHUMDKIT
S1-DEHUSTAT
