Questions? Please Contact Your Local Manufacturer’s Representative
2-23
SECTION 2 EDR-SOLA-IOM-2022-0216 INSTALLATION
direction, nearby mechanical equipment and other design considerations
as detailed in this manual. Some recommendations:
Avoid sharp turns, boot tees, bullhead tees, back-to-back 90
degree elbows, and short radius elbows.
Avoid extensive direction changes (ue gases being required
to turn around).
Never direct ue stacks in a downward direction.
Combustion Air Intake
Adhere to the folllowing for installation:
1. It is the responsibility of the designer and installer of the venting system to
guarantee the prevention of ue gas recirculation (ue gases being drawn
into a boiler’s combustion air supply, or ue gases moving backward
through an idle boiler).
2. The installation of room exhaust fans in a boiler room should be avoided.
An exhaust fan or similar equipment can create down draft in the stack or
restrict the burner’s air supply, resulting in poor combustion or life safety
hazard.
3. It is essential that only fresh air is allowed to enter the combustion
air system. Foreign substances, such as combustible volatiles in the
combustion system can create hazardous conditions.
4. Particulate matter (example: sheetrock, berglass, cement, plaster board,
dirt, dust, lint) or chemicals (example: chlorine, sulfur, freon, uorine,
perchlorethylene, halogenated compounds) in the combustion air supply
to the boiler will cause damage or failure to the heat exchanger and/
or burner, and is not covered under warranty. High-risk situations for
particulate matter to be in the air include construction and maintenance
activities. See Table 5.
NOTE: Pool and laundry room air may be contaminated with chlorine or uorine
compounds. If allowed to enter the combustion air supply, these contaminants
will signicantly increase the acidity of ue gas condensate, potentialy damaging
heat transfer surfaces. Damage to the heat exchanger due to poor combustion air
quality is not covered under warranty.
5. Ensure there is not a negative pressure in the boiler room. The boiler room
pressure must be neutral relative to the outdoors.
TABLE 5 PRODUCTS/CONTAMINANTS TO AVOID
Products to
avoid
Products containing chloro/ourocarbons; chlorine-based
products; calcium chloride products, sodium chloride
products, paint and varnish removers, hydrochloric acid,
muriatic acid, cements, glues, antistatic fabric softeners,
Freon, drywall particles, dirt, berglass
Areas with
the potential
to have
contaminants
Dry cleaning/laundry areas; swimming pools; repair
shops; processing plants; manufacturing plants; active
construction sites; chemical storage; food processing
plants; farms, cooling towers, chillers
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct, and strict
adherence to applicable jurisdictional/
professional codes and regulations.
4 CAUTION
Ensure there is not a negative pressure in the
boiler room. The boiler room pressure must
be neutral relative to the outdoors.
Particulate matter or chemicals (example:
chlorine, uorine, perchlorethylene,
halogenated compounds) in the
combustion air supply to the boiler will
cause damage or failure to the burner.
High-risk situations for particulate matter
to be in the air include construction and
maintenance activities. See Table 5.
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