7
COMBUSTION AIR & VENTING
REQUIREMENTS
WARNING:
CARBON MONOXIDE POISONING HAZARD
Codes.
IMPORTANT INFORMATION:
5.
WARNING:
WARNING:
This condensing furnace is certified for installation either as
a Direct Vent (2-pipe) or Conventional (1-pipe) appliance.
Direct Vent appliances draw combustion air from the
outdoors and vent combustion products back outside.
Installation with air taken from around the furnace is often
referred to as Conventional installation - i.e. only the vent
(exhaust) pipe is provided.
Another important consideration when selecting one or
two pipe installation is the quality of the Indoor air which
can sometimes be contaminated with various household
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