Supply Air Connections; Return Air Connections - Payne PG9MAA Installation Manual

ANGLE
IRON OR
EQUIVALENT
(B)
(A) ROD LOCATION
USING DIMPLE
LOCATORS
(SEE DIMENSIONAL
DWG FOR
LOCATIONS)
(A) PREFERRED ROD LOCATION
(B) ALTERNATE ROD LOCATION
C. Supply Air Connections
UPFLOW FURNACES
Connect supply-air duct to 3/4-in. flange on furnace supply-air outlet. The supply-air duct attachment must ONLY be connected to furnace
supply-/outlet-air duct flanges or air conditioning coil casing (when used). DO NOT cut main furnace casing to attach supply side air duct,
humidifier, or other accessories. All accessories MUST be connected external to furnace main casing.
DOWNFLOW FURNACES
Connect supply-air duct to supply-air opening on furnace. The supply-air duct attachment must ONLY be connected to furnace supply/outlet or
air conditioning coil casing (when used), when installed on non-combustible material. When installed on combustible material, supply-air duct
attachment must ONLY be connected to an accessory subbase or factory approved air conditioning coil casing. DO NOT cut main furnace casing
to attach supply side air duct, humidifier, or other accessories. All accessories MUST be connected external to furnace main casing.
HORIZONTAL FURNACES
Connect supply-air duct to supply air opening on furnace. The supply-air duct attachment must ONLY be connected to furnace supply/outlet or
air conditioning coil casing (when used). DO NOT cut main furnace casing to attach supply side air duct, humidifier, or other accessories. All
accessories MUST be connected external to furnace main casing.
D. Return Air Connections
The furnace and its return air system shall be designed and installed so that negative pressure created by the air circulating fan cannot affect another
appliance's combustion air supply or act to mix products of combustion with circulating air, and that the air circulating fan of the furnace, if
(B)
(A)
3
/ -IN. HEX NUT
8
& WASHER (4)
REQD PER ROD
NOTES:
Fig. 25—Crawlspace Location in Direct Vent Application (All Sizes)
"
3
5 ⁄
4
DRAIN
(A)
(B)
13
/ -IN. MAX
16
(A) (B)
ALTERNATE SUPPORT
LOCATION FROM BACK
1. A 1 In. clearance minimum between top of
furnace and combustible material.
2. The entire length of furnace must be
supported when furnace is used in horizontal
position to ensure proper drainage.
—25—
3
⁄ -IN. ROD
8
ALTERNATE SUPPORT
LOCATION 4-IN. MIN
8-IN. MAX
A93304