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Page 6 12426-4-0104
Note: No vent equipment supplied with furnace.
4" Oval (all parts purchase locally)
1. Type B-1 oval pipe
2. Single story type B-1 gas vents require a baseplate and one pair of
ceiling plate spacers.
3. Multi-story type B-1 gas vents require a baseplate, one pair of ceiling
plate spacers at the Þ rst ß oor ceiling and one pair of Þ re stop spacers
at each successive ceiling level.
Type B-W gas vent pipe is available for single story or multi-
story installations. Type B-W gas vent pipe is to be used with the
Listed base plate, ceiling plate spacers and Þ re stop spacers.
Insulated Vent Enclosure
Gravity vented wall furnaces installed in buildings with ß at roofs can have
poor venting. The cold vent pipe will have a delay in proper venting and
cause the wall furnace to shut "off" by the vent safety switch. To prevent
delayed venting as well as condensation of ß ue products an insulated vent
enclosure is recommended.
Use Type B vent pipe and maintain at least a one inch (25mm) clearance
to combustibles.
Use metal thimble to protect vent pipe as it passes through combustibles.
Baseplate Gasket is factory installed on header. Baseplate attaches to header
with screws. B-vent snaps into and is attached to baseplate. Minimum
height of vent pipe must be six feet (1.8m) above header.
Stud space around gas vents must be free of obstructions and building
paper.
Uninsulated Single-Wall Metal Pipe shall not be used outdoors in cold
climates for venting gas utilization equipment.
Attention: The main burner uses room air for combustion. As the gas/air
mixture is injected into the main burner, there is also the ß ow of dust and
lint particles into the main burner.
Dust and lint accumulation inside the main burner will result in a yellow
main burner ß ame and possible sooting inside the combustion chamber
and vent pipe. To clean main burner refer to Page 13, "Proper Main Burner
Flame."
RECOMMENDED VENT CONFIGURATION