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Model 900 Humidifier Installation Manual
Installation
1. The Model 900 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 8-7/8" wide by 12" tall. Extend horizontal
centerline of cut out to the adjacent plenum. Cut a 6" hole
10" to 15" from side of humidifier, on cabinet centerline, using
connecting collar as guide. The bypass is reversible and can
be mounted on the right or left side of the humidifier.
2. The humidifier is self retaining. Slide the top side in first,
then slide the chassis down. Level chassis and install center
screws. If by-pass pipe installs to opposite side of chassis,
bend clip on chassis, remove side panel, and reinstall panel
to opposite side of chassis. Install remaining four corner
screws.
3. Connect the by-pass pipe to the collar and humidifier
cabinet. Using holes at top and bottom of side panel
discharge, pierce two self tapping screws through by-pass
pipe.
4.
Mount the self tapping saddle valve or code valve on either
a cold or a hot water pipe. A side or top mount is best to
avoid clogging from pipe sediment. Connect 1/4" O.D.
tubing to the saddle valve. Copper tubing requires a brass
compression nut and brass sleeve. Plastic tubing requires a
brass insert inside the tubing, a plastic sleeve on the outside
with a brass compression nut.
!
CAUTION: Do not use plastic tubing on hot water or in
contact with any hot plenum surface or duct. Installation
of this saddle valve must meet or exceed local codes and
ordinances.
4
Breathe Healthier!
Residential Whole-House Indoor Air Quality
8-7/8"
2
3
COPPER
TUBING
PLASTIC
TUBING
12"
1
2
6"
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