Amana GUIA Series Service Instructions Manual page 47

PRODUCT DESIGN
• 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 antici-
pated snow build up).
• A vent termination shall not terminate over public
walkways or over an area where condensate or va-
por 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.
NOTE: In Canada, the Canadian Fuel Gas Code takes pre-
cedence over the preceding termination restrictions.
OTHER THAN
COMBUSTION AIR
TERMINATION INTAKE
NON-DIRECT VENT
VENT/FLUE TERMINATION
10'
12"
3"
GRADE OR HIGHEST
12"
ANTICIPATED
SNOW LEVEL 12"
FORCED AIR
INLET
DIRECT VENT
VENT/FLUE TERMINATION
90% Furnace Vent Termination Clearances
CANADIAN VENTING REQUIREMENTS (90%
FURNACES ONLY)
In Canada, venting must conform to the requirements of the
current CAN/CGA-B149 Installation Code. Use only CSA
listed two or three inch diameter PVC or ABS pipe, solvent
cement, and fittings throughout. Carefully follow the manu-
facturers' instructions for cutting, cleaning, and solvent ce-
menting 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-re-
sistant flashing.
The vent shall not be located:
• Less than 12 inches above the finished grade line.
• Less than 36 inches from any building opening or
any gas service regulator. For gas service regulators
in the Province of Ontario, 72 inches.
NO TERMINATIONS
ABOVE WALKWAY
4'
4'
12"
NON-DIRECT VENT
VENT/FLUE TERMINATION
• Less than 72 inches from the combustion air intake
of another appliance.
• Directly above a gas utility meter or service regula-
tor.
• Over a walkway unless located 84 inches above
grade.
STANDARD FURNACE CONNECTIONS (90%
FURNACES ONLY)
It is the responsibility of the installer to ensure that the pip-
ing connections to the furnace are secure, airtight, and ad-
equately supported.
As shipped, attachment "couplings" for vent/flue and com-
bustion air intake pipe connections are provided on the
furnace's top cover (upflow). To use the standard connec-
tions, field supplied vent/flue pipe and combustion air intake
pipe (when applicable) should be secured directly to the fur-
nace at these locations.
Vent/Flue Pipe (90% Furnaces Only)
Vent/flue pipe can be secured to the vent/flue coupling us-
ing the rubber coupling and worm gear hose clamps pro-
vided with this furnace. Torque hose clamps to 20 inch-lbs
(see "Standard Connections" figure). The rubber coupling
allows separation of the vent/flue pipe from the furnace
during servicing. NOTE: Do not use other commercially
available "no hub connectors" due to possible material con-
flicts. 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 section in this manual or
the installation instructions for further details).
NOTE: For non-direct vent installations, a minimum of one
90° elbow must be installed on the combustion air intake
coupling to guard against inadvertent blockage.
Combustion Air Pipe (90% Furnaces Only)
Direct Vent Installations
On upflow units secure the combustion air intake pipe di-
rectly to the air intake coupling. On counterflow units se-
cure the combustion air intake pipe to the air intake cou-
pling using the rubber coupling and worm gear hose clamps
provided with the unit. The counterflow rubber coupling al-
lows service removal of air intake piping internal to the fur-
nace blower compartment. NOTE: Because of probable
material conflicts, do not use other commercially available
"no hub connectors". The combustion air intake pipe can
also be secured directly to the counterflow unit air intake
pipe coupling.
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Rev. 1