/ WARNING:
CARBON MONOXIDE POISONING
HAZARD
1. Seal any unused openings in the
venting system
2. inspect the venting system for
proper size and horizontal pitch,
as required in the National Fuel
Gas Code, ANSi Z223.1 or the
CAN/CGA B149 Installation Codes
and these instructions. Determine
that there is no blockage or re-
striction, leakage, corrosion and
other deficiencies which could
cause an unsafe condition.
3. So far as is practical, close all
building doors and windows and
all doors between the space in
which the appliance(s) connected
to the venting system are located
and other spaces of the building.
4. Follow the lighting instructions.
Place the appliance being
inspected in operation. Adjust
thermostat so appliance shall
operate continuously.
5. Turn on clothes dryers and any
other appliance not connected to
the venting system. Turn on any
exhaust fans, such as range hoods
and bathroom exhausts, so they
shall operate at maximum speed.
Do not operate a summer exhaust
fan.
6. Close fireplace dampers.
7. Test for spillage from draft hood
equipped appliance at the draft
hood relief opening after 5 minutes
of main burner operation. Use the
flame of a match or candle.
8. If improper venting is observed
during any of the above tests, the
venting system must be corrected
in accordance with the National
Fuel Gas Code, ANSI Z223.1/NFPA
54and/or CSA B149.1, Natural Gas
and Propane Installation Codes.
16
. After it has been determined that
each appliance connected to the
venting system properly vents
when tested as outlined above,
return doors, windows, exhaust
fans, fireplace dampers and any
other gas burning appliance to
their previous conditions of use.
It must not be vented in common with any
other appliance, even if that appliance is of the
condensing type. Common venting can result
in severe corrosion of other appliances or their
venting and can allow combustion gases to
escape through such appliances or vents. Do
not vent the furnace to a fireplace chimney or
building chase.
If removing an existing furnace in a venting
system, the venting system may not be properly
sized. To test the vent system with the remaining
appliances, follow the test outlined below.
The following steps shall be followed with each
appliance connected to the venting system
placed in operation, while any other appliances
connected to the venting system are not in
operation:
Vent Pipe Material
Vent and combustion air pipe and fittings must
be one of the following materials and must
conform to the indicated ANSI/ASTM standards:
Material ....................................... Standard
Schedule 40PVC ............................ D1785
PVC-DWV ....................................... D2665
SDR-21 & SDR-26 .......................... D2241
ABS-DWV ....................................... D2661
Schedule 40 ABS ............................ F628
Foam/Cellular Core PVC ................ F891
Note: In Canada, vent materials must be certi-
fied to the Standard for Type BH Gas Venting
System, ULC $636. Any certified ULC $636
material must not be interchanged with unlisted
or non certified pipes and/or fittings. The plastic
components, specified primers and glues of the
certified vent system must not be intermixed with
any other manufacturer's vent systems or parts.
Cement and primer must conform to ATSM
Standard D2564 for PVC and Standard D2235
forABS. When joining PVC piping toABS, use
an appropriate solvent cement and procedure
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