Product Overview

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103859-12 - 8/19
MPO-IQ
Installation & Service Manual
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 MPO-IQ 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.
• 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.
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 – the draft regulator supplied with
the boiler (or equivalent) must be used with this
appliance. Refer to Figures 13 and 14.
4 Natural Draft Venting (All Boiler Models)
WARNING
Vent this boiler according to these supplemental 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.
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