Bottom Return Air Inlet; Horizontal Installation; Roll-Out Protection; Filter Arrangement - Payne PG8JAA042090AAJA Installation And Operating Instructions Manual

A02071
Fig. 10--Leveling Legs
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,
per_brm the following:
1. Tilt or raise fi/mace and remove 2 screws holding bottom filler
panel. (See Fig. 9.)
2. Rotate bottom filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws.
HORIZONTAL INSTALLATION
--€
FIRE, EXPLOSION, AND CARBON MONOXIDE
POISONING HAZARD
Failure to follow this warning could result in dangerous
operation, serious injury, death or property damage
Do not instal1 the fttrnace on its back or hang fimaace with
control compartment facing downward. Safety control opera=
tion will be adversely affected. Never connect return=air ducts
to the back of the furnace.
The filrnace car* be installed horizontally in an attic or crawl space
on either the left-hand (LH) or right=hand (RH) side The furnace
can be hung fiom floor joists, rafters or trusses or installed on a
non-combustible plat_brm, blocks, bricks or pad.
Suspended Furnace Suppmq _
The furnace may be supported under each end with threaded rod,
angle iron or metal plumber's strap as shown. (See Fig. 15 and 16.)
Secure angle iron to bottom of l\tmace as shown. Heavy-gauge
sheet metal straps (plumber's straps) may be used to suspend the
furnace fiom each bottom corner. To prevent screws fiom pulling
out, use 2 #S x %-in. screws into the side and 2 #8 x -%-in. screws
in the bottom of the fl/mace casing for each strap. (See Fig. 15 and
16,)
--> If the screws are attached to ONLY the fitmace sides and not the
bottom, the straps must be vertical against the fm'nace sides and
not pull away fiom the _amace sides, so that the strap attachment
screws are not in tension (are loaded in shear) for reliable support,
11
Plat_brm Furnace Support
Construct working platform at location where all required furnace
clearances are met. (See Fig 2 and 17.) For fi/rnaces with l-in.
clearance requirement on side, set fllmace on non=congbustible
blocks, bricks or angle iron For crawlspace installations, if the
fm'nace is not suspended fi'om the floor joists, the ground under-
neath furnace must be level and the furnace set on blocks or bricks.
Roll=Out Protection
Provide a minimum 17-3/4" X 22" piece of sheet metal for flame
roll-out protection in fl'ont of burner area tbr fhmaces closer than
12 inches above the combustible deck or suspended furnaces
closer than 12-in. to joists. The sheet metal MUST extend
underneath the fllmace casing by 1 in. with the door removed.
The bottom closure panel on furnaces of widths 17=i/2 in. and
larger may be used for flame roll-out protection when bottom of
furnace is used _br remm air connection. See Fig. 17 _br proper
orientation of roll=out shield.
Bottom Return Air Inlet
These ti_maces are shipped with bottom closure panel installed in
bottom return=air opening. Remove and discard this panel when
bottom remm air is used. To remove bottom closure panel,
perform the tbllowing:
1. Tilt or raise fi/mace and remove 2 screws holding bottom filler
panel. (See Fig. 9.)
2. Rotate bottom filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws.
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) is used without a bottom return air linlet.
Not all horizontal furnaces are approved for side return air
connections (See Fig. 20.)
FILTER ARRANGEMENT
FIRE, CARBON MONOXIDE AND POISONING
HAZARD
Failure to %tlow this warning could result in fire, personal
inju W, or death,
Nero* operate a fin'nace without a filter or with filter access
door remove&
There are no provisions for an internal filter rack in these fllrnaces.
A field=supplied accessory external filter rack is required.
This fllmace requires KGAFR0301ALL 1" external filter rack or a
suitable field-supplied substitute, such as the Media Cabinet.
Refer to the instructions supplied with external filter rack _br
assembly and installation options
AIR D[CTS
General Requirements
The duct system should be designed and sized according to
accepted national standards such as those published by: Air
Conditioning Contractors Association (ACCA), Sheet Metal and
Air Conditioning Contractors National Association (SMACNA) or
American Society of Heating, Refrigerating and Air Conditioning
Engineers (ASHRAE) or consuh Yhe Ai_' 5)'stems Desigr_ G_ide-
[i_ve.s reference tables available fi'om your tocal distributor. The
duct system should be sized to handle the required system design