6
QUEST 746
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
QUESTCLIMATE.COM
(877) 420-1330
WARNING!
Check the supporting structure to be used to verify that it has
sufficient load carrying capacity to support the weight of the unit. Suspend the unit
only from the threaded nut retainers. Do NOT suspend from the cabinet.
CAUTION!
Recommended maximum hanger rod is 6 ft (1.8 m).
5. CONTROL OPTIONS
The Quest 746 Dehumidifier is controlled by an external remote humidistat through a 24V terminal
block. External control NOT provided.
5.1 HUMIDITY CONTROL
A 24VAC signal is sent by the remote humidistat signals the fan or fan and compressor to actuate.
Quest Control Options:
»
Cloud Control
»
DEH 3000R
»
Honeywell Humidistat
»
Any 24V signal to dehumidify
CAUTION!
Low Voltage Hazard. Can cause equipment damage. Disconnect
power before beginning installation.
5.2 24VAC WIRING
The terminal block, low voltage circuit breaker, and power switch are located on the intake
side of the unit. Turn the power switch to the off position while wiring the unit.
FLOAT:
{External normally closed dry contact float switch.} No voltage may be applied
to the float switch.
FLOAT:
Applying voltage may damage the control and void the warranty. {If no float
is used in the system, leave the jumper connected to the terminal block.}
DEHU:
Dehumidificaton (compressor and fan operation).
R:
24VAC output
FAN:
Fan operation only.
C:
24VAC neutral (common)
Note:
»
External devices can be powered between 24V/COM (10VA max).
»
24V circuit is protected by circuit breaker
C
FAN
R
DHUM
(COMPRESSOR
AND FAN)
FLOAT
FLOAT
