Weil-McLain EG 5 Series Manual page 7

EG PEG
&
SERIES
Prepare boiler location
Vent System
(continued)
Chimney or vent requirements
installations must comply with B149.1 or B149.2 Installation Codes.
2. See "Ratings" on page 38 for minimum chimney or vent sizes. Chimney
or vent termination:
A chimney, or any vent other than a Type B vent with listed vent cap,
must extend at least 3 feet above the highest point where it passes
through a roof of a building, and at least 2 feet higher than any portion
of a building within a horizontal distance of 10 feet.
than 8 feet from a vertical wall or similar obstruction.
penetration and at least 2 feet higher than any portion of a building
within 10 feet.
3. A lined chimney is preferred and must be used when required by local,
state, provincial and national codes, laws, regulations and ordinances.
linings made of noncorrosive materials are best. Advice for flue connec-
tions and chimney linings can be obtained from local gas utility. Type B
double-wall metal vent pipe or single-wall vent pipe may be used as a
liner.
4. Cold masonry chimneys, also known as outside chimneys, typically have
one or more walls exposed to outside air. When any atmospheric gas-
fired boiler with automatic vent damper is vented through this type of
chimney, the potential exists for condensation to occur. Condensation
can damage a masonry chimney. The following are recommended to
prevent possible damage.
a. Line chimney with corrosion-resistant metal liner such as AL29-4C®
single-wall stainless steel or B-vent. Size liner per National Fuel Gas Code
b. Provide drain trap to remove any condensate.
5. Where two or more gas appliances vent into a common chimney or vent,
equivalent area should be at least equal to area of vent outlet on largest
appliance plus 50 percent of vent outlet area of additional appliances.
Terminations with Type B vent fitted with listed cap, provided
vent is at least 8 feet from any vertical wall or similar
obstruction
Part Number 550-142-782/1112
5 EGH 5
SERIES
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GAS FIRED BOILERS
Air contamination
1. Please review the following information on potential
combustion air contamination problems.
2. See Table 3 for products and areas which may cause
contaminated combustion air.
Products to avoid
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Cements and glues
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Adhesives used to fasten building products and other
similar products
Areas likely to have contaminants
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Metal fabrication plants
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Refrigeration repair shops
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—
BOILER MANUAL
To prevent potential of severe personal
injury or death, check for products or
areas listed below before installing boiler.
If any of these contaminants are found:
— OR —
bustion air. See national, provincial or
local codes for further information.
Contaminants to avoid
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