Canadian Venting Requirements; Standard Furnace Connections; Vent /Flue Pipe; Ent Lue Ipe - Goodman xMEC96 Series User Manual

• 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.
NOTE: In Canada, the Canadian Fuel Gas Code takes precedence over the preceding termination restrictions.
C V R
ANADIAN ENTING EQUIREMENTS
In Canada, venting must conform to the requirements of the current 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.
S F C
TANDARD URNACE ONNECTIONS
It is the responsibility of the installer to ensure that the piping connections to the furnace are secure, airtight, and adequately
supported.
V /F P
ENT LUE IPE
The vent pipe outlet is sized to accept 2" pipe. Secure vent/flue pipe directly into the
furnace fitting with the appropriate glue. Alternately, a small section of 2" pipe may be
glued in the furnace socket and a rubber coupling installed to allow removal for future
service. Combustion Air and Vent piping should be routed in a manner to avoid contact
with refrigerant lines, metering devices, condensate drain lines, etc. If necessary,
clearances may be increased by creating an offset using two 45 degree elbows. This
joint can be rotated on the fitting to establish maximum 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. (Figure 8A)
NOTE: For non-direct vent installations, a minimum of one 90° elbow should be in-
stalled on the combustion air intake coupling to guard against inadvertent blockage.
D V I
IRECT ENT NSTALLATIONS
On upflow units secure the combustion air intake pipe to the air intake coupling by
using a take apart rubber coupling supplied with the furnace or a plastic cou-
pling. Also, the intake coupling may be inverted to allow the intake pipe to be
glued directly to it. After inverting the coupling, secure it to the furnace top
with screws. On counterflow units secure the combustion air intake pipe to the air
intake coupling using the rubber coupling and worm gear hose clamps provided with
the unit. The counterflow rubber coupling allows service removal of air intake piping
internal to the furnace blower compartment. The combustion air intake pipe can
also be secured directly to the counterflow unit air intake pipe coupling.
COMBUSTION AIR INTAKE OPTION: The RF000142 coupling can be secured
directly to the furnace intake coupling if condensation is a concern. If the
RF000142 is used on the combustion air inlet, it must be installed with the
arrow pointing up. It should be noted, the combustion air will actually be moving in a direction opposite of the arrow on the
RF000142 coupling. It must have a field supplied, trapped drain tube free-draining to proper condensate disposal location. A
loop in the drain tube can serve as a trap. The unused RF000142 drain fitting should be capped. (Figure 8B)
13
V
E
N
T
45 DEGREE
LONG-SWEEP
ELBOWS
Increased Clearance Configuration
Figure 8A
VENT-DRAIN
The RF000142 Coupling
Figure 8B