Quest DRY 105, 155, and 205
Installation, Operation and Maintenance Instructions
1-877-420-1330
10
www.QuestProtect.com
5. Controls
The Quest Dry can be equipped with various accessories to enhance its operation. A remote control must be used with
the Quest Dry. ThermaStor offers the DEH 3000 proprietary controller. The DEH 3000 allows homeowners the
ability to monitor and control relative humidity levels in their home. This control is also offered witha remote sensing
option.
WARNING:
DO NOT
allow the yellow lead from the unit to contact the red lead or the white
lead from the unit or damage to the transformers will result.
The Quest Dry is controlled using five color-coded wires.
Green (or brown) = Fan control
Blue = Dehumidification (fan and compressor) control
Red = 24volt AC power transformer neutral side (common with white)
White = 24volt AC power transformer neutral side (common with red)
Yellow = transformer high side
Between the red/white lead and the yellow leads is a 40VA transformer. This low voltage power source powers the relay
coils which control the fan and compressors. This 24VAC transformer can also be used to power HVAC assessories
external to the dehumidifier.
• To turn the dehumidifier on make contact between yellow and blue wires.
• To turn the fan on make contact between yellow and green(or brown) wires.
• To power an HVAC accessory, connect the accessory to the white (or red) wire and the yellow wire.
FOR HVAC INSTALLER ONLY
(P/N 4027370; with remote: P/N 4028531)
Control Part No. 4027370
Quest
Dehumidifier
RED
4201 Lien Rd. Madison, WI 53704
•
TOLL-FREE 1-800-533-7533
•
www.thermastor.com
•
TS-673, 06/11
WARNING:
Allowing yellow wire to contact red or white wire
will
destroy
the transformer.
Dehumidifier on : Connect yellow and blue wires.
Fan only on : Connect yellow and green (or brown) wires.
Accessory power : 24volt AC power supply available for HVAC accessories between yellow and
white(and/or red) wire. Red and white wires are common with each other.
Quest DEH 3000 dehumidification & ventilation control
YELLOW
BLUE
GREEN or BROWN
WHITE
Internal Connections
OPTIONAL
DAMPER
24 V
AC
DMP COMP FAN
Control Part No. 4027370
Quest
Dehumidifier
RED
4201 Lien Rd. Madison, WI 53704
•
TOLL-FREE 1-800-533-7533
•
www.thermastor.com
•
TS-673, 06/11
WARNING:
Allowing yellow wire to contact red or white wire
will
destroy
the transformer.
Dehumidifier on : Connect yellow and blue wires.
Fan only on : Connect yellow and green (or brown) wires.
Accessory power : 24volt AC power supply available for HVAC accessories between yellow and
white(and/or red) wire. Red and white wires are common with each other.
Quest DEH 3000 dehumidification & ventilation control
YELLOW
BLUE
GREEN or BROWN
WHITE
Internal Connections
OPTIONAL
DAMPER
24 V
AC
DMP COMP FAN
