Payne PG9MAB Series A Installation Manual page 19

DUCTS
TO
OUTDOORS
12" MAX
1 SQ IN.
PER 2000 B
BTUH*
DUCTS
TO
OUTDOORS
1 SQ IN.
PER 2000
A
BTUH*
12" MAX
CIRCULATING AIR DUCTS
*Minimum dimensions of 3 in.
NOTE: Use any of the following
combinations of openings:
A & B C & D D & E
Fig. 18—Air for Combustion, Ventilation, and Dilution for
Outdoors
B. Non-Direct Vent Applications
CAUTION: UNIT DAMAGE HAZARD
Failure to follow this caution may result in intermittent unit operation.
Do not install furnace in a corrosive or contaminated atmosphere. Make sure all combustion and circulating air requirements are met.
Refer to the Air for Combustion and Ventilation section for details.
1 SQ IN.
PER 4000
BTUH*
D
12"
MAX
VENT
THROUGH
F
ROOF
1 SQ IN.
PER
4000
BTUH*
1 SQ IN.
PER
4000
BTUH*
E
G
12"
MAX
C
12" MAX
DUCT
1 SQ IN.
TO
PER 4000
OUTDOORS
BTUH*
F & G
Fig. 17—Installation in a Garage
CIRCULATING AIR
DUCTS
INTERIOR
HEATED
SPACE
CIRCULATING AIR DUCTS
* Minimum opening size is 100 sq in. with
minimum dimensions of 3 in.
†
Minimum of 3 in . . when type-B1 vent is used.
A03174
Fig. 19—Air for Combustion, Ventilation, and Dilution from
18-IN. MINIMUM
TO BURNERS
—19—
VENT THROUGH ROOF
12" MAX
1 SQ IN.
PER 1000
BTUH* IN DOOR
OR WALL
UNCONFINED
SPACE
6" MIN
(FRONT)
1 SQ IN.
PER 1000
BTUH* IN DOOR
OR WALL
12" MAX
Indoors
†
A03175
A93044