GOLD CGa Gas-Fired Water Boiler
10 Part Number 550-110-593/1099
Combustion air and ventilation openings must comply
with Section 5.3, Air for Combustion and Ventilation,
of National Fuel Gas Code ANSI Z223.1-latest edition,
or applicable local building codes. Canadian
installations must comply with B149.1 or B149.2
Installation Codes.
Provide adequate combustion and
ventilation air to assure proper
combustion and reduce the risk of
severe personal injury, death or
substantial property damage caused
by flue gas spillage and carbon
monoxide emissions.

Air from inside building

(boiler in interior room - Figure 2)
1. Tightly constructed buildings must be provided with
openings to outside for combustion and ventilation
air. These openings must be sized to handle all fuel
burning appliances, exhaust or ventilation fans and
fireplaces.
2. When openings to boiler room are t aken to interior
spaces, provide two permanent openings:
• One air opening within 12 inches of floor.
• A second opening within 12 inches of ceiling.
Each opening must provide a minimum free area
of 1 square inch per 1,000 Btuh of input of all
appliances in room plus requirements for any
exhaust fans in room. The interior space supplying
combustion and ventilation air must have adequate
infiltration from outside.
1. Tightly constructed buildings must be provided with
combustion and ventilation air openings to boiler
room, which are adequate to handle the boiler needs
plus the needs of all other fuel burning appliances,
exhaust or ventilation fans and fireplaces.
2. When combustion air is supplied to the boiler space
directly through outside walls (Figure 3): Provide
two permanent openings:
• One air opening within 12 inches of floor.
• A second opening within 12 inches of ceiling.
Each opening must provide a minimum free area
of 1 square inch per 4,000 Btuh of input of all
appliances in room plus requirements for any
exhaust fans in room.
Prepare boiler location — air openings1c
MODEL
CGi
MODEL
CGi