The preferred method of installation is to create a separate
return for the Ultra-Aire 65H in a central area of the structure.
Duct the supply of the Ultra-Aire 65H to the air supply of the
existing HVAC system.
4.4E Installation in a Structure with No Existing Forced
Air HVAC System
When installing the Ultra-Aire 65H in a structure that does
not have a forced air HVAC system, a single return for the
Ultra-Aire 65H should be installed in central open area of
the structure. DO NOT locate the return in a bathroom or a
kitchen. The supplies of the Ultra-Aire 65H should be located
in the remote areas of the structure (such as bedrooms,
den, etc.). By ducting this way, the air inside the structure
will circulate through the Ultra-Aire 65H to be filtered
and dehumidified. A 6" diameter duct is recommended
for branches to the bedrooms. A 8" diameter duct is
recommended for branches to larger areas.
4.4F Ducting for High Efficiency Filtration
The Ultra-Aire 65H is equipped with a high efficiency MERV
11 media filter (P/N 4027158). For optimal performance it is
recommended that the filter be replaced every 3-6 months.
4.5 Noise Abatement
A length of 10 feet or more of flex ducting on the outlet of
the Ultra-Aire 65H will reduce air noise from the fan. A length
of flexible ducting on all Ultra-Aire 65H duct connections is
recommended to reduce noise transmitted to rigid ductwork
in the structure.
CAUTION
Replacing the filter requires the return duct to be
removed. Failure to use flex duct will prevent filter
access. Three feet of flex duct should be adequate to
access the filter.
4.6 Controls
All control panels should be mounted in a central area of the
4. 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.
FOR HVAC INSTALLER ONLY
7
Ultra-Aire 65H Installer’s & Owner’s Manual
(P/N 4028539; with remote: P/N 4028407)
