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6
Natural Draft Venting (Chimney)
• Vent this boiler according to these instructions. Failure to do so may cause products of combustion to enter
the home resulting in severe property damage, personal injury or death.
• Insufficient Combustion Air Supply may result in the production and release of deadly carbon monoxide (CO)
into the home which can cause severe personal injury or death.
• Improper venting may result in property damage and the release of flue gases which contain deadly carbon
monoxide (CO) into the home, which can cause severe personal injury, death, or substantial property
damage.
• Inspect existing chimney and vent connector for obstructions and deterioration before installing boiler.
Failure to clean or replace perforated pipe or chimney liner will cause severe injury or death.
• Do not de-rate the appliance. Failure to fire the boiler at it's designed input may cause excessive
condensation upon the interior walls of the chimney. In addition, the lower input may not create enough draft
to adequately evacuate the by-products of combustion.
A . CHIMNEY VENTING
1. Chimney venting is an important part of a safe and efficient oil
fired appliance system. Contact your local fire and building
officials on specific requirements for restrictions and the
installation of fuel oil burning equipment. In addition, consult
with a professional knowledgeable on the requirements of NFPA
31 – Standard for the Installation of Oil-Burning Equipment and
NFPA 211 - Standard for Chimneys, Fireplaces, Vents, and Solid
Fuel-Burning Appliances for installations in the United States.
Installations in Canada must be reviewed with a professional
knowledgeable on the requirements of CSA B139 – Installation
Code for Oil-burning Equipment.
2. The safe venting of oil fired boilers is dependant on many
factors. Some of these factors include:
a. sufficient draft during the entire heating season to allow
for the safe discharge of combustion by-products and;
b. suitable corrosion protection in the event of condensing
flue gases. Only a trained and qualified contractor may
install this product.
3. The CI-HGS-E shall be vented into any of the following:
a. Masonry or metal chimney. Build and install in
accordance with local buildings codes; or local authority
having jurisdiction; or "Standards for Chimney,
Fireplace, Vents, and Solid Fuel Burning Appliances",
ANSI/NFPA 211 and/or National Building Code of
Canada. Masonry chimney must be lined with listed
chimney system. Listed clay flue lined masonry
chimneys meet venting requirements.
•
External chimneys are more susceptible to flue
gas condensation due to colder outside air
temperatures. To prevent corrosion due to flue gas
condensation, use a listed corrosion-resistant metal
liner in chimney.
24
Installation, Operating & Service Manual
CI-HGS-E
!
WARNING
•
4. Chimney Inspection – Prior to the installation of any new
or replacement fuel burning equipment the chimney shall
be inspected by a qualified installer. The chimney shall
be inspected for integrity as well as for proper draft and
condensate control. Some jurisdictions require the use of a
liner when changing fuel types. Some jurisdictions require
the use of a liner even when the same fuel is used. At a
minimum, the chimney shall be examined by a qualified
person in accordance with the requirements of Chapter 11 of
NFPA 211, Standard for Chimneys, Fireplaces, Vents, and
Solid Fuel-Burning Appliances.
a. Loose Mortar – Loose mortar could be an indication of a
prior history of condensing flue gases upon the inside walls
of the chimney. Colder climates are more susceptible to
this condition. Under no circumstances shall a chimney
of this condition be used until it meets the requirements
of NFPA 211 or CSA B139.
b. Unlined Chimney – Under no circumstances shall a chimney
constructed of brick only be used. Only approved clay
liners or listed chimney lining systems shall be used as
specified in NFPA 31 or CSA B139.
c. Abandoned Openings – Openings through the chimney
wall that are no longer used shall be sealed in accordance
to NFPA 211. Often abandoned openings are improperly
sealed and usually covered by a gypsum wall covering.
d. Clean Chimney – Chimney shall be free of all loose debris.
5. Draft Regulator – a draft regulator (not supplied with boiler)
must be used with this appliance. Refer to Figures 13 and 14.
Oversized chimneys are more susceptible to flue
gas condensation. To reduce the likelihood of
flue gas condensation and ensure proper draft,
use a properly sized listed metal liner in oversized
chimney.
105753-06 - 9/19
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