Preferred
TM
Model PF845411/PF845412
I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
6
Preferred Products
4. Apply the gasket material found in the accessory bag to
the duct around the rectangular cutout.
5. Lift the humidifer base into the rectangular opening so that
the plastic tabs engage the lower edge of the rectangular
opening. The tabs should be on the inside of the duct. Tilt
the upper edge of the humidifier against the duct so that
the mounting holes line up with the drilled holes on the
duct. Secure the humidifier with two #8 X 3/4” self-drilling-
sheet metal screws from the accessory bag.
6. Refer to the section regarding pad replacement on page
8. Complete that section before proceeding to ensure
that the internal components of the humidifier are properly
aligned/installed as they may have become misaligned
during shipment. Failure to complete this task may result
in faulty operation or leaks.
7. Ensure that the humidifier is level and plumb before pro-
ceeding.
4.3 Plumbing
1. Install a saddle valve and strainer (not provided) on the
nearest cold water supply pipe. (See the instructions that
accompany the saddle valve for additional details).
2. After the saddle valve and strainer are installed but before
inserting the line into the humidifier supply fitting, turn the
saddle valve to the open position and discharge the water
into a bucket or pan. This will allow the water to flush any
debris that may have accumulated in the line during the in-
stallation process. Once this is complete, close the saddle
valve.
3. Attach the line to the humidifier by simply pushing the line
into the push-to-lock fitting and pulling back slightly to seat
the line. If it becomes necessary to remove the line, press
on the release ring around where the line goes into the fit-
ting to release the line and pull it out. See Figure 5 for
plumbing diagram.
4. Connect the drain hose to the drain connection fitting and
run this to an open, gravity drain. The end of this line must
not be submerged in water or be trapped.
5. Turn on the saddle valve.
6. Ensure that no water is leaking from any of the fittings be-
fore proceeding.
Figure 5
4.4 Electrical
!
CAUTION
This humidifier should be installed by a qualified service per-
son only in accordance with the Nation Electric Code, ANSI/
NFPA 70 and the Rules of the Canadian Electric Code, Part
I, C22.1. Do not connect the unit to the power source until
the installation is complete. A thorough checkout of the unit
installation should be completed before operating the unit.
Failure to follow these directions may void the manufacturer’s
original warranty.
The Preferred
TM
PF845411/PF845412 humidifier requires a
120 VAC source of electrical power. The unit is equipped with
a line-cord so that this power source may be connected easily.
Before proceeding, ensure that interconnection of the 120 VAC
power may be accomplished without the use of an extension
cord. In order to access the wiring compartment remove the
screw as shown in Figure 6. Once the screw is removed, the
door may be opened as shown in Figure 7.
Figure 6