Payne PG95ESA Installation, Start-Up, Operating And Service And Maintenance Instructions page 26

Supply Air Connections
For a furnace not equipped with a cooling coil, the outlet duct shall
be provided with a removable access panel. This opening shall be
accessible when the furnace is installed and shall be of such a size
that the heat exchanger can be viewed for possible openings using
light assistance or a probe can be inserted for sampling the air
stream. The cover attachment shall prevent leaks.
Connect supply- -air duct to flanges on furnace supply- -air outlet.
Bend flange upward to 90_ with wide duct pliers. See Fig. 19. The
supply- -air duct must be connected to ONLY the furnace
supply- -outlet- -air duct flanges or air conditioning coil casing
(when used). DO NOT cut main furnace casing side to attach
supply air duct, humidifier, or other accessories. All supply- -side
accessories MUST be connected to duct external to furnace main
casing.
Return Air Connections
The return- -air duct may be connected to bottom of the furnace.
The side of casing that faces downward may also be used for return
air connection. A combination of the bottom and downward
facing side may also be used. The upward facing side of the casing
cannot be used as a return air connection. See Fig. 24.
Bottom Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return- -air opening. Remove and discard this panel when
bottom return air is used. To remove bottom closure panel, see Fig.
27 and 28.
Side Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return- -air opening. This panel MUST be in place when
side return air inlet(s) are used without a bottom return air inlet.
Not all horizontal furnaces are approved for side return air
connections See Fig. 24. Where required by code, seal bottom
closure to furnace with tape, mastic, or other durable sealing
method.
SCREWS (2)
Representative drawing only,
some models may vary in appearance.
1 Lay furnace on the back or side
2 Remove the two (2) screws that secure the bottom
closure panel to the furnace casing and remove the
panel
Fig. 27 - - Removing Bottom Closure Panel (2 Screws)
1
2
3
4
Filter Arrangement
FIRE, CARBON MONOXIDE AND POISONING
HAZARD
Failure to follow this warning could result in fire, personal
injury or death.
Never operate a furnace without a filter or filtration device
installed. Never operate a furnace with filter or filtration
device access doors removed.
The furnace may be used with an optional external media filter
cabinet. The optional media filter cabinet uses either a standard
1-in. (25 mm) filter or 4-in. (102 mm) wide media filter which can
be purchased separately. A field supplied accessory air cleaner may
also be used in place of the media cabinet.
The optional media cabinet is sized for bottom return applications
for use in upflow, downflow and horizontal applications. A 16- -in.
BOTTOM
(406 mm) media cabinet may be used with the 14- -3/16-in. (360
CLOSURE
mm) furnace and includes block-off plates
For upflow side return applications, the optional media cabinet (or
field supplied accessory air cleaner) can be installed on the side of
the furnace or side and bottom when a bottom plenum is used. See
Fig. NO TAG and 22.
For downflow applications, the optional media cabinet (or field
supplied accessory air cleaner) must only be connected to the
bottom opening on the furnace. See Fig. NO TAG and 23.
A170123
For horizontal applications, the optional media cabinet (or field
supplied accessory air cleaner) for all models can be connected to
the bottom opening on the furnace. For side return use in the
horizontal position, refer to Fig. 24. If both side and bottom
openings are used in Fig. 24, each opening used will require an
optional filter.
The optional media cabinet (or field supplied accessory air cleaner)
can also be installed in the common return duct prior to entering
the return air opening in any orientation.
26
SCREWS (4)
BOTTOM
PLATE
Representative drawing only,
some models may vary in appearance.
Lay furnace on the back or side
Remove the four (4) screws that secure the bottom
plate to the furnace casing
Remove the bottom closure from the casing
Re--install the bottom plate to the furnace casing and
re--install the four (4) screws
Fig. 28 - - Removing Bottom Closure Panel (4 Screws)
WARNING
!
A170124