Air Openings; Boiler Room - Weil-McLain GOLD CGa Installation And Maintenance Manual

GOLD
1c
Prepare boiler location —
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.
Air from inside building
(boiler in interior room -
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 taken 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
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.
Figure 2 Air openings to interior space
Each opening free area =
1 sq. inch per 1,000 Btuh
Other
appliances
59321a
10
CGa Gas-Fired Water Boiler
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.
)
Figure 2
0 to 12"
CGa
boiler
Add air openings
building is tight
MODEL MODEL
CGi CGi
0 to 12"

air openings

ir directly from outside to

boiler room

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)
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
appliances in room plus requirements for any
exhaust fans in room.
Figure 3 Air directly from outdoors
Each opening free area =
1 sq. inch per 4,000 Btuh
Other
appliances
of all
59321b
3. When combustion air is supplied to the boiler space
directly from outside or ventilated attic/crawl
space through vertical ducts (Figure 4)
two permanent openings:
• One air opening within 12 inches of floor.
• A second opening within 12 inches of ceiling.
to outside if
Each opening must provide a minimum free area
construction.
of
1 square inch per 4,000 Btuh of input
appliances in room plus requirements for any
exhaust fans in room. The duct cross sectional area
must be no less than the required area of the
permanent openings.
: Provide
of all
0 to 12"
CGa
boiler
MODEL MODEL
CGi CGi
0 to 12"
: Provide
of all
Part Number 550-110-593/1099