USSC 1537M Owner's Manual page 23

2" MINIMUIM
CLEARANCE
COLD AIR
RETURN
ANTI-BACKDRAFT
FLAPPER
SOLID FUEL
FURNACE
2" MINIMUIM
CLEARANCE
COLD AIR
RETURN
SOLID FUEL
FURNACE
INSTALLATION - D
(U.S. ONLY)
DUCT
WORK
INSTALLATION - E
(U.S. ONLY)
DUCT
WORK
23
11 PCS
(OPTIONAL PLENUM FAN
CONTROL LOCATION)
FURNACE PLENUM
EXISTING FURNACE
BAFFLE
FURNACE PLENUM
EXISTING FURNACE