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Installation
The installer should be an experienced service
technician. Disconnect electrical power before
beginning installation. Do not install where
temperatures fall below 32 degrees F or where
plenum temperatures exceed 150 degrees F.
When wiring into a multi-speed blower circuit
see Step 6.
InsTallaTIon
The humidifier may be mounted with the 6" outlet to
the right or left side. The humidifier may be mounted
on the warm or return air plenum with equal
efficiency. See Typical Installations.
additional Materials That May be
necessary
1. 1/4" diameter plastic supply tubing or 1/4"
copper supply tubing for hot water applications
2. 6" diameter galvanized by-pass pipe
3. Electrical wire and wire nuts
4. Current sensing relay
5. #8 self piercing sheet metal screws
6. Accurate Humidity measuring device.
sTeP 1: Carefully unpack the Bosch Humidifier and
verify that all contents are present and undamaged.
Remove the cover using the the release tabs on the
top and bottom, exposing the humidifier evaporator
pad. Remove the evaporator pad, drain pan, and
distributor trough ( all of this should come out as
one piece).
Revised 07-12
Subject to change without prior notice
step 2: The BOSCH humidifier may be installed on
either the supply or return plenum of a forced air
handling system. Select a location for the humidifier
that allows for service and maintenance. Cut out a
rectangle. Extend horizontal center line of cut out to
the adjacent plenum. Cut a 6" hole 10" to 15" from
side of humidifier, on cabinet center line, using
connecting collar as guide. The bypass is reversible
and can be mounted on the right or left side of the
humidifier. Use provided template provided in the
humidifier package. See Figure 1.
figure #1
step 3: Humidifier is self retaining. Slide top side in
first, then slide chassis down. Level chassis and
install center screws. If by-pass duct installs to
opposite side of chassis, bend clip on chassis,
remove side discharge, and reinstall discharge to
opposite side of chassis. Install remaining four
corner screws. See Figure 2.
figure #2
step 4: Connect by-pass duct to collar and
humidifier cabinet. Using holes at top and bottom of
side panel discharge, pierce 2 self tapping screws
through by-pass pipe. See Figure 3.
6 720 220 343
IaQ series
3
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