13
12"
Non-Direct Vent
Vent/Flue Termination
No Terminations
Above Walkway
12"
min.
4'
min.
Non-Direct Vent
Vent/Flue Termination
Direct Vent
Vent/Flue Termination
<10'
Forced Air
Inlet
Non-Direct Vent
&
Direct Vent
Vent/Flue Terminations
Grade or Highest
Anticipated
Snow Level
3' min.
12" min.
4' min.
12" min.
Vent Termination Clearances
NOTE:
In Canada, the Canadian Fuel Gas Code takes precedence
over the preceding termination restrictions.
C
ANADIAN
V
ENTING
R
EQUIREMENTS
In Canada, venting must conform to the requirements of the current
CAN/CSA-B149 Installation Code. Use only CSA listed two or three
inch diameter PVC or ABS pipe, solvent cement, and fittings through-
out. Carefully follow the pipe manufacturers’ instructions for cut-
ting, cleaning, and solvent cementing PVC and/or ABS.
The vent can be run through an existing unused chimney provided
the space between the vent pipe and the chimney is insulated and
closed with a weather-tight, corrosion-resistant flashing.
S
TANDARD
F
URNACE
C
ONNECTIONS
It is the responsibility of the installer to ensure that the piping con-
nections to the furnace are secure, airtight, and adequately sup-
ported.
As shipped, attachment “couplings” for vent/flue and combustion
air intake pipe connections are provided on the furnace’s top cover
(upflow) or basepan (counterflow). To use the standard connec-
tions, field supplied vent/flue pipe and combustion air intake pipe
(when applicable) should be secured directly to the furnace at these
locations.
V
ENT
/F
LUE
P
IPE
Vent/flue pipe can be secured to the vent/flue coupling using the
rubber coupling and worm gear hose clamps provided with this fur-
nace (see “Standard Connections” figure). The rubber coupling al-
lows separation of the vent/flue pipe from the furnace during servic-
ing. Combustion Air and Vent piping should be routed in a manner
to avoid contact with refrigerant lines, metering devices, conden-
sate drain lines, etc. If necessary, clearances may be increased
by utilizing two 45 deg. Long-Sweep Elbows and creating an “S”
joint to provide additional space at connection locations. This joint
can be rotated on the fitting to establish maximum clearance be-
tween refrigerant lines, metering devices, and condensate drain
lines, etc. This joint is the equivalent of one 90 deg. elbow when
considering elbow count.
drain system. Allowances should be made for minor expansion
and contraction due to temperature variations. For this reason,
particular care must be taken to secure piping when a long run is
followed by a short offset of less than 40 inches.
Precautions should be taken to prevent condensate from freezing
inside the vent/flue pipe and/or at the vent/flue pipe termination. All
vent/flue piping exposed to freezing temperatures below 35°F for
extended periods of time must be insulated with 1/2” thick closed
cell foam. Also all vent/flue piping exposed outdoors in excess of
the terminations shown in this manual (or in unheated areas) must
be insulated with 1/2” thick closed cell foam. Inspect piping for
leaks prior to installing insulation.
T
ERMINATION
L
OCATIONS
NOTES:
Refer to
Section IV, Location Requirements and
Considerations
for combustion air contaminant restrictions.
The following bullets and diagram describe the restrictions concern-
ing the appropriate location of vent/flue pipe and combustion air
intake pipe (when applicable) terminations. Refer to
Non-Direct
Vent (Single Pipe) Piping
and
Direct Vent (Dual Pipe) Piping
lo-
cated in this section for specific details on termination construction.
•
All terminations (flue and/or intake) must be located at
least 12 inches above ground level or the anticipated snow
level.
•
Vent terminations (non-direct and direct vent) must
terminate at least 3 feet above any forced air inlet located
within 10 feet.
NOTE: This provision does not apply to the
combustion air intake termination of a direct vent
application.
•
The vent termination of a
non-direct
vent
application must
terminate at least 4 feet below, 4 feet horizontally from, or
1 foot above any door, window, or gravity air inlet into any
building.
•
The vent termination of a
direct vent
application must
terminate at least 12 inches from any opening through
which flue gases may enter a building (door, window, or
gravity air inlet).
•
The vent termination of vent pipe run vertically through a
roof must terminate at least 12 inches above the roof line
(or the anticipated snow level) and be at least 12 inches
from any vertical wall (including any anticipated snow build
up).
•
A vent termination shall not terminate over public walkways
or over an area where condensate or vapor could create
a nuisance or hazard or could be detrimental to the
operation of regulators, relief valves, or other equipment.
•
The combustion air intake termination of a direct vent
application should not terminate in an area which is
frequently dusty or dirty.
Содержание GCV9 Series
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