Payne PG8J - Page 18

18
30-IN. MIN
WORK AREA
6
″
MIN*
TYPE-B
VENT
17
3
/ 4 ″
22 ″
SHEET
METAL
SEDIMENT
TRAP
MANUAL SHUTOFF
GAS VALVE
LINE CONTACT ONLY PERMISSIBLE BETWEEN
LINES FORMED BY INTERSECTIONS OF
THE TOP AND TWO SIDES OF THE FURNACE
JACKET AND BUILDING JOISTS,
STUDS, OR FRAMING.
GAS
ENTRY
17
3
/ 4 ″ OVER ALL
4
3
/ 4 ″ UNDER DOOR
1″ UNDER FURNACE
EXTEND OUT 12″ OUT
FROM FACE OF DOOR
* WHEN USED WITH
SINGLE WALL VENT
CONNECTIONS
A02164
Fig. 17 --- Typical Attic Installation
A02075
Fig. 18 --- Upflow Return Air configurations and Restrictions
PG8J/M