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Humidity Control Humidistat HUMb-TsT-a-a
HUMIdITY ConTRol
HUMIdIsTaT HUMb-TsT—a—a
INSTALLER: Leave owner's manual with home
owner.
safeTY
Improper electrical wiring can result in fire or
loss of humidity control. Disconnect electrical
power before installing and servicing. Failure to
disconnect electrical power may result in injury or
death. All local building and electrical codes must
be followed. The humidistat must be installed by
a qualified Technician. Failure to properly install
the humidistat may result in property damage or
personal injury.
Homeowners must read instructions and
understand the operation of the humidistat and the
humidifier(s) it controls.
Improper operation can result in over or under
humidification. Over humidification can result in
condensation, structural damage and mold.
Condensation within a building's structure can
cause loss of structural strength. Condensation can
also enable mold and mildew growth resulting in
personal injury and damage to building structure
and contents.
aPPlICaTIon
The humidistat provides low voltage control of
humidifiers installed in central heating systems.
The humidistat control has a DPST switch and is
designed for wall mounting in the living area, or
Revised 07-12
Subject to change without prior notice
mounting on the return air duct. Use contacts C
and NO for humidistat operation. Use contacts C
and NC for dehumidistat operation.
RanGe: 10% to 85% RH ELECTRICAL RATING: 30
VAC / 60 VA
oPeRaTIon
Set the control knob to the desired humidity
setting. The recommended setting for optimum
whole-house humidification is 30% to 50%. The
vertical position on the knob is approximately 42%
RH.
Setting the humidistat above or below the
recommended settings may not provide
satisfactory results for your home. Refer to the
Care and Maintenance section of this manual for
recommended settings.
InsTallaTIon InsTRUCTIons—
PReCaUTIons
The installer must be a qualified technician.
Disconnect electrical power before beginning
installation. Do not install the humidistat on the
warm air duct. Conduct a thorough checkout
before leaving the installation.
Wall MoUnT InsTRUCTIons—
HUMIdIsTaT/deHUMIdIsTaT
veRsIons
1. Choose a location for the HUMB-TST—H—A
about five feet above the floor on an inside wall
with average room temperature and relative
humidity conditions.
2. Drill a small hole in the wall and run low voltage
wiring to the location chosen. Pull about 6" of
wire through the hole. Use the entire mounting
gasket (both inside and outside portions) to
seal the wall opening or use foam tape to
prevent drafts from affecting the humidistat
operation. See Figure 6.
3. Squeeze the top and bottom of the base to
release the face of the humidistat.
4. Mount the base horizontally over the wires.
Attach directly to the wall, using the two screws
provided in the slotted holes.
6 720 220 343
IaQ series 5
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