Kenmore CENTRAL HUMIDIFIER 303.9380612 - Manual (Page 7)

If plenum is wider than stiffener:
2. The five reference hole marks you’ve made on
the plenum outline the area that must be cut out.
Mark straight lines connecting the five points.
WARNING: Wear safety glasses! Be sure not to drill
or cut into air conditioner coil or tubing! If electric drill
is used, be sure it is properly grounded.
3. Drill or punch a large hole In one corner of the
area to be cut out. This will allow you to insert tin
snips or a metal saw.
4. Cut along the lines connecting the five points. If
any of the cut edges are rough, file them smooth.
5. Drill the remaining holes marked on the plenum
with a 1/8" drill bit.
6. Mount the stiffener with the mounting tabs facing
out toward you. Use the seven sheet metal
screws, supplied, to fasten the stiffener. Make
sure the stiffener is flush with the plenum and is
airtight. Seal around the edge with caulking (not
furnished) if necessary.
7. Using the two finger grips (Fig. 9) on the lower
edge of the front panel, simply lift the front panel
about 1/8" straight up, swing the lower edge out,
pull down until the front panel is free. Remove
lower rod screw (Fig. 9).
Disconnect media motor wiring at the electrical
disconnect. Grasp both ends of the electrical
disconnect and simply pull apart (Fig. 9).
WARNING: Do not pull on wires to separate
electrical connector.
Upper Case Electrical Disconnect
Remove the reservoir assembly. Remove the
lower case from the humidifier by unfastening
the latches on both sides and removing the
lower rod screw. Set the lower case, reservoir
media wheel assembly, and front panel aside.
Remove the humidistat from the lower case.
8. Hang the upper case assembly on plenum stiff­
ener mounting tabs (Fig. 7). Tabs may have to
be bent out slightly to fit into the slots in the
back of the upper case assembly. Secure the
upper case to the stiffener by pressing the
capped fastener (No. 47, Page 16) through the
back of the humidifier and into hole “A” (Fig. 10).
NOTE: It is very important that this fastener be
used. If the upper case is not attached with the
fastener, it could be dropped and damaged during
routine maintenance.
HUMIDISTAT
1 , Locate the humidistat on the return (cold) air
plenum (Fig. 11). DO NOT install the humidistat
on the supply (hot) air plenum because the
humidistat cannot accurately measure indoor
relative humidity and will cause the humidifier to
function improperly.
Return
Air
Plenum
Gasket
Fig. 11
2. The humidistat mounts in a horizontal position.
Using gasket as a template, mark the location
of the two mounting holes and the opening for
the humidistat on the return air plenum.
3. Drill 1/8" holes for two mounting screws.
Cut out the opening for the humidistat.