FOR HVAC INSTALLER ONLY
Ultra-Aire 90H Installer’s & Owner’s Manual
4.6 Controls
The Ultra-Aire can be equipped with various accessories to
enhance its operation. A remote control must be used with the
Ultra-Aire. 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 UA dehumidifier 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 trans-
former. 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.
(P/N 4028539; with remote: P/N 4028407)
Ultra-Aire
Dehumidifier
RED
YELLOW
BLUE
GREEN or BROWN
WHIT
E
Internal Connections
OPTIONAL
DAMPER
24
VA
C
DMP COMP FAN
10
