17
INSTALLATION
EXHAUST
BOILER
Fig. 26
All Combustion Air from Adjacent Indoor Spaces through
indoor Combustion Air Openings
EXHAUST
BOILER
Fig. 27
All Combustion Air from Outdoors - Through Ventilated Attic
EXHAUST
BOILER
Fig. 28
All Combustion Air From Outdoors - Inlet Air From Ventilat-
ed Crawl Space and Outlet Air to Ventilated Attic
EXHAUST
BOILER
AIR DUCT
AIR DUCT
Fig. 29
All Combustion Air from Outdoors through Horizontal Ducts
VENTING CONFIGURATIONS: The following gures show the acceptable piping installation for venting and combustion air.
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