8
VENTING AND COMBUSTION
AIR PIPING
WARNING
CARBON-MONOXIDE
POISONING
HAZARD
Failure to follow instruction could result in severe
personal injury or death due to carbon-monoxide
poisoning, if combustion products infiltrate into
the building.Check that all openings in the outside
wall around the vent (and air intake) pipe(s)
are sealed to prevent infiltration of combustion
products into the building.Check that furnace vent
(and air intake) terminals are not obstructed in
any way during all seasons.
3
WARNING
Corrosive or contaminated air may cause failure
of parts containing flue gas, which could leak into
the living space.
Air for combustion must not
be contaminated by halogen compounds, which
include fluoride, chloride, bromide and iodide.
These elements can corrode the heat exchanger
and burner cabinet component. This conditions
would shorten the furnace life. Air contaminants
are found in aerosol sprays, detergents, bleaches,
cleaning solvents, salts, air fresheners, and other
household products. Do not install the furnace
in a corrosive or contaminated atmosphere.
Make sure all combustion and circulating air
requirements are met, in addition to all local codes
and ordinances.
8.1
GENERAL
If this furnace replaces a furnace that was connected to
a vent system or chimney, the vent or vent connectors
of other remaining appliances may need to be re-sized.
Vent systems or vent connectors of other appliance must
be sized to the minimum size allowable.
An abandoned masonry chimney may be used as
a
raceway
for
properly
insulated
and
supported
combustion-air (when applicable) and vent pipes. Each
furnace must have its own set of combustion air and vent
pipes.
A furnace shall not be connected to a chimney flue
serving a separate appliance designed to burn solid fuel.
Other gas appliances with their own venting system
may also use the abandoned chimney as a raceway
providing it is permitted by local code, the current edition
of the National Fuel Gas Code, and the vent or liner
manufacturer’s installation instructions.
Care must be
taken to prevent the exhaust gases from one appliance
from contaminating the combustion air of other gas
appliances.
• The vent pipe and combustion air pipe must be the
same diameter.
• Slope horizontal vent piping upward a minimum
of 1/4" per foot of run so that condensate drains
toward the furnace.
• Support horizontal vent piping at least every five
feet. No sags or dips are permitted
• The vent pipe and combustion air pipe must
terminate on the same building side.
• Watt heat tape at the termination of venting could
be a necessity if ice build up is expected.
8.2
DIRECT VENT
When this furnace is installed as a direct vent (2 pipes)
furnace, no special provisions for combustion air are
required.
Direct vent installations require a dedicated combustion
air and exhaust vent piping. The system is only using
outside air for combution.
The vent and combustion air pipe can terminate vertically,
through the roof or horizontaly through and outside wall.
Refer to figures for approved termination.
Penetration throught a roof requires appropriate sealing
and proper flashing.
In Canada
, refer to manufacturer’s instructions for
supporting ULC S636 venting. ABS can be used for the
combustion air pipe.
8.3
NON DIRECT VENT
All air for combustion comes directly to the furnace from a
space that is well ventilated with outdoor air (such as an
attic or crawlspace). In addition, other gas appliances
installed in the space with the furnace may require
outside air for combustion.
The combustion air pipe
cannot be terminated in attics or crawlspaces that uses
ventilation fans designed to operate during the heating
season. If ventilation fans are present in these areas, the
combustion pipe must terminate outdoors as a direct vent
(2 pipe) system.
8.4
SPECIAL VENTING
REQUIREMENTS FOR
INSTALLATION IN CANADA
In Canada, S636 certified primers and cements must
be used and be of the same manufacturer of the S636
venting system- do not mix primers and cements from
one manufacturer with a vent system from a different
19
Summary of Contents for CC15-M-V
Page 18: ...Figure 17 Wiring Diagram 18...
Page 23: ...Figure 25 Direct vent clearance 23...
Page 24: ...Figure 26 Other than Direct vent clearance 24...
Page 34: ...12 PART LIST Figure 27 Exploded view...
Page 35: ...Figure 28 Exploded view continued...
Page 36: ...Table 19 Part list Chinook Compact...
Page 37: ...Table 20 Part list continued...
Page 38: ...13 NOTES 38...
Page 39: ...39...
Page 40: ...40...
