Installation; Bottom Return Air Inlet; Side Return Air Inlet; Leveling Legs (If Desired) - Payne PG8JAA042090AAJA Installation And Operating Instructions Manual

c.( ornbining space ondiff?rent floor l evels. The volumes of
spaces on different floorlevels shall b econsidered as
communicating spaces if connected byone ormore p erma=
nent openings indoors orfloors h aving f i'ee a rea o fatleast
2 in.2/1,000 Bmh (4,400 mma&W) of total input rating of
all gas appliances.
2. An attic or crawlspace may be considered a space that fieely
communicates with the outdoors provided there are adequate
pet_nanent ventilation openings directly to outdoors having
_?ee area of at least i-in.2/4,000 Bmh of total input rating for
all gas appliances in the space.
3. In spaces that use tlle Indoor Combustion Air Method,
infiltration should be adequate to provide air for combustion,
pemlanent ventilation and dilution of flue gases. However, in
buildings with unusually tight construction, additional air
MUST be provided using the methods described in the
Outdoor Combustion Air Method section.
Unusually tight construction is defined as
Construction with:
a. Walls and ceilings exposed to the outdoors have a continu=
ous_ sealed vapor barrier. Openings are gasketed or sealed
and
b. Doors and openable windows are weatherstripped and
c. Other openings are caulked or sealed. These include joints
around window and door fi'ames, between sole plates and
floors, between wall-ceiling joints, between wall panels, at
penetrations _br plumbing, electrical and gas lines, etc.
---> Combination of Indoor and Outdoor Air
1. Indoor openings shall comply with tlle Indoor Combustion
Air Method below and,
2. Outdoor openings shall be located as required in tlle Outdoor
Combustion Air Method mentioned previously and,
3. Outdoor openings shall be sized as follows:
a. (alculate the Ratio of all Indoor Space volume divided by
required volume _br Indoor Combustion Air Method
below.
b. Outdoor opening size reduction Factor is 1 minus the
Ratio in a. above.
c. Minimum size of Outdoor openings shall be the size
required in Outdoor (ombusIiou Air Method above
nmltiplied by reduction Factor in b. above. The nlininlum
dimension of air openings shall be not tess than 3 in. (80
111111)
INSTALLATION
L PFLOW INSTALLATION
Bottom Return Air Inlet
These fhmaces are shipped with bottom closure panel installed in
bottom return-air opening. Remove and discard this panel when
bottom remm air is use& To remove bottom closure panel
perfbrrn die following:
1. Tilt or raise furnace and remove 2 screws holding bottom filler
panel (See Fig. 9.)
2. Rotate bottom filler panel downward to release holding tabs.
3. Remove bottom closm'e panel
4. Reinstall bottom filler panel and screws
Side Return Air Inlet
These fk/rnaces are shipped with bottom closure panel installed in
bottom return=air opening. This panel MUST be in place when
only side remm air is used.
BOTTOM FILLER
PANEL
I I
BOTTOM CLOSURE
PANEL
A02098
Fig. g--Removing Bottom Closure Panel
10
NOTE:
Side return=air openings can be used in UPFLOW and
most HORIZONTAL coni:igurations Do not use side return-air
openings in DOWNFLOW configuration.
Leveling Legs (If Desired)
In upfluw position with side remm inlet(s), leveling legs may be
used. (See Fig. 10.) Install field=supplied, 5/16 X 1-1/2 in. (max)
con'osion-resistant machine bolts, washers and nuts.
NOTE: Bottom closure most be used when leveling legs are used.
It may be necessary to remove and reinstall bottom closure panel
to install leveling legs. To remove bottom closure panel, see Item
1. in Bottom Return Air Inlet section.
To install leveling legs:
1. Position furnace on its back. Locate and drill a hole in each
bottom corner of fi/mace. (See Fig. 10.)
2. For each leg, install nut on bolt and then install bolt and nut in
hole. (Install flat washer if desired.)
3. Install another nut on other side of fi/rnace base. (Install flat
washer if desired.)
4. Adjust outside nut to provide desired height, and tighten inside
nut to secure arrallgement.
5. Reinstall bottom closure panel if removed.
DOVvL\'FLOW INSTALLATION
NOTE: For downflow applications, this furnace is approved fbr
use on combustible flooring when any one of the following 3
accessories are used:
° Special Base, KGASB
° Cased (oil Assembly Part No. (D5 or (K5
° (?oil Box Part No. KCAKC
1. Determine application being installed from Table 3.
2. (onstruct hole in floor per Table 3 and Fig. 11.
3. (onstruct plenum to dimensions specified in Table 3 and Fig.
11.
4. If downfluw subbase, KOASB is used, install as shown in Fig.
12. If Coil Assernbly Part No. (D5 or (K5 or (Toil Box Part
No. K(AKC is used, install as shown in Fig. 13.
NOTE: It is recommended that the perI:brated supply-air duct
flanges be completely _blded over or removed flora fi_rnace when
installing the _i/rnace on a fhctory-supplied cased coil or coil box.
To remove the supply-air dact flange, use wide duct pliers or hand
seamers to bend flange back and _:Prth until it breaks of L Be careful
of sharp edges. (See Fig. 14.)