Goodman Mfg CVM96 사용자 설명서

14

Vent/flue pipe can be secured to the vent/flue coupling using the
rubber coupling and worm gear hose clamps provided with this
furnace (see “Standard Connections” figure).  The rubber coupling
allows separation of the vent/flue pipe from the furnace during ser-
vicing. Combustion Air and Vent piping should be routed in a man-
ner to avoid contact with refrigerant lines, metering devices, con-
densate drain lines, etc.  If necessary, clearances may be in-
creased by utilizing two 45 deg. Long-Sweep Elbows and creat-
ing an “S” joint to provide additional space at connection loca-
tions.  This joint can be rotated on the fitting to establish maxi-
mum clearance between refrigerant lines, metering devices, and
condensate drain lines, etc.  This joint is the equivalent of one 90
deg. elbow when considering elbow count.

45 DEGREE

LONG-SWEEP

ELBOWS

V
E
N
T

NOTE: Do not use other commercially available “no hub connec-
tors” due to possible material conflicts.  The vent/flue pipe can also
be secured using a  PVC or ABS elbow or coupling using the
appropriate glue (see Materials and Joining Methods).

NOTE: For non-direct vent installations, a minimum of one 90°
elbow should be installed on the combustion air intake coupling to
guard against inadvertent blockage.

On upflow units secure the combustion air intake pipe  directly to
the air intake coupling.   On counterflow units secure the combus-
tion air intake pipe to the air intake coupling using the rubber cou-
pling and worm gear hose clamps provided with the unit. The coun-
terflow rubber coupling allows service removal of air intake piping
internal to the furnace blower compartment.  NOTE: Because of
probable material conflicts, do not use other commercially avail-
able “no hub connectors”.  The combustion air intake pipe can
also be secured directly to the counterflow unit air intake pipe
coupling.

•

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.

Non-Direct Vent

Vent/Flue Termination

No Terminations
 Above Walkway

Non-Direct Vent

Vent/Flue Termination

Direct Vent

Vent/Flue Termination

Forced Air

Inlet

Non-Direct Vent

&

Direct Vent

Vent/Flue Terminations

Grade or Highest

 Anticipated 
Snow Level

NOTE: In Canada, the Canadian Fuel Gas Code takes precedence
over the preceding termination restrictions.

In Canada, venting must conform to the requirements of the cur-
rent CAN/CSA-B149.1-05 Installation Code. Use only CSA-listed,
ULC-S636 compliant two- or three-inch diameter PVC or ABS pipe,
solvent cement, and fittings throughout.  The certified piping should
be clearly marked with the ULC Std “S636” on the pipe and fittings.
Carefully follow the pipe manufacturers’ instructions for cutting,
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.

It is the responsibility of the installer to ensure that the piping
connections to the furnace are secure, airtight, and adequately
supported.

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.