Horizontal Examples For Colinear Direct Vent - Empire Comfort Systems PV-28SV50-BN-1 Owner's Manual

HORIZONTAL EXAMPLES FOR COLINEAR DIRECT VENT
Max Vent Run - 40 ft. Equivalent With Three (3) 90° Elbows
Special Note: The vent terminal 90° elbow and first 90°
elbow off back of the heater, when within 6" (15.2 cm), do not
contribute to the overall vent length measurement. For each
45° elbow installed in the horizontal run, the length of the
horizontal run MUST be reduced by 1.5 feet (45 cm). This
does not apply if the 45° elbows are installed on the vertical
part of the vent system. Reduce the length of the horizontal
run 3 feet (91.4 cm) for every 90° elbow.
Note: On horizontal runs, a P.V.C. support clamp needs to be
installed every 3 feet. No "sags" in horizontal vent runs; water
will settle in the pipe.
In both vertical and horizontal colinear direct vent applications,
a colinear transition plate model PVCT can be used to minimize
clearances between intake and exhaust pipes.
For horizontal colinear direct venting, exhaust and intake air, cap
pipes with 90º elbows, pointed downward.
Note: If transition plate (model PVCT) is used, the measurement
for center to center of the pipes will be 2.5". If the transition plate
(model PVCT) is not used, the measurement for center to center
of the pipes can be 3" to 24" maximum.
Page 24
Figure 24
Enhanced top view of Figure 26
When installing a colinear horizontal, the minimum vent length
protruding from the outside wall is 6" (15.2 cm) for air intake and
9" for exhaust. See Figure 27.
Note: Horizontal discharge 90° elbow must be pointed
downward. See Figure 26. All horizontal runs require either a 1/4"
per foot rise to run condensation back to the heater, or a 1/4" per
foot downward slope to run condensation away from the heater.
Note: All PVC vent run piping can be purchased at a local
hardware store. Schedule 40 PVC pipe should be used and cemented.
PVCA Horizontal Colinear Direct Vent Adaptor, PVVTC Cap,
PVVK-CFA Flex Kit and PVVK-SH Horizontal Vent Adaptor Kit
are available from Empire Comfort Systems, Inc.
Note: Must maintain a minimum 3" between
exhaust outlet and air intake.
Figure 27
MIN. 2"
3" MIN.
6" MIN.
12" MIN.
9" MIN.
EXTERIOR GRADE
Figure 25
Figure 26
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