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III. Venting / Air Intake Piping
Do not use this boiler with galvanized, non metallic or any other venting material that is not de-
signed for condensing flue gas applications.
Do not use a drafthood with this appliance.
Do not use vent dampers with this boiler.
Moisture and ice may form on surfaces around termination. To prevent deterioration, surfaces
should be in good repair (sealed, painted, etc.).
This appliance needs fresh air for safe operation and must be installed so there are provisions
for adequate combustion and ventilation air.
Do not reduce size of air intake pipe.
Read, understand and follow combustion air instruction restrictions contained in the Pre-Installa-
tion instructions of this manual.
Do not operate appliance where gasoline or other flammable vapors or liquids, or sources of
hydrocarbons (i.e. bleaches, cleaners, chemicals, sprays, paint removers, fabric softeners, etc.)
are used, stored and/or present in the air.
When installing vent pipe through chimney, no other appliance can be vented into the chimney.
Do not exceed maximum vent/air intake lengths. Refer to Table 1.
A. Vent Guidelines Due to Removal of an Ex-
isting Boiler
For installations not involving the replacement of an
existing boiler, proceed to Step B.
When an existing boiler is removed from a common
venting system, the common venting system is likely to
be too large for proper venting of the remaining appli-
ances. At the time of removal of an existing boiler, the
following steps shall be followed with each appliance
remaining connected to the common venting system
placed in operation, while the other appliances remain-
ing connected to the common venting system are not in
operation:
1. Seal any unused openings in the common venting
system.
2. Visually inspect the venting system for proper size
and horizontal pitch and determine there is no
blockage or restriction, leakage, corrosion, and
other deficiencies which could cause an unsafe
condition.
3. Insofar as is practical, close all building doors and
windows and all doors between the space in which
the appliances remaining connected to the common
venting system are located and other spaces of the
building. Turn on clothes dryers and any appliance
not connected to the common venting system.
Turn on any exhaust fans, such as range-hoods
and bathroom exhausts, so they will operate at
8
WARNING
maximum speed. Do not operate a summer exhaust
fan. Close fireplace dampers.
4. Place in operation the appliance being inspected.
Follow the Lighting (or Operating) Instructions.
Adjust thermostat so appliance will operate
continuously.
5. Test for spillage at the draft hood relief opening
after five (5) minutes of main burner operation. Use
the flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
6. After it has been determined that each appliance
remaining connected to the common venting
system properly vents when tested as outlined
above, return doors, windows, exhaust fans, fire
place dampers and any other gas burning appliance
to their previous conditions of use.
7. Any improper operation of the common venting
system should be corrected so the installation
conforms with the National Fuel Gas Code, NFPA
54/ANSI Z223.1 and/or CAN/CSA B149.1 Natural
Gas and Propane Installation Code. When resizing
any portion of the common venting system, the
common venting system should be resized to ap-
proach the minimum size as determined using the
appropriate tables in Part 11 of the National Fuel
Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA
B149.1 Natural Gas and Propane Installation Code.
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