Owner`s manual

27020-3-0410 Page 25
HORIZONTAL EXAMPLES FOR COLINEAR DIRECT VENT
EXTERIOR GRADE
REAR SHROUD
12” MIN.
MODEL PVCT
SINGLE FLUE ADAPTER
CO-LINEAR DIRECT VENT ADAPTER
6” MIN.
9” MIN.
OUTDOOR SEALANT
REQUIRED
TOP VIEW
EXHAUST
EXHAUST
12” MIN.
EXTERIOR GRADE
3” MIN.
2.5”
AIR INTAKE
AIR INTAKE
TRANSITION PLATE
Figure 34
Enhanced top view of Figure 33
Figure 33
Max Vent Run - 40 ft. Equivalent With Three (3) 90° Elbows
Special Note: The vent terminal 90° elbow and rst 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.
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 34.
Note: Horizontal discharge 90° elbow must be pointed
downward. See Figure 32. 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.
Horizontal Colinear Direct Vent Adaptor, Cap, Flex Kit and PV-
VK-SH Horizontal Vent Adaptor Kit are available from Empire
Comfort Systems, Inc.
Figure 31
In both vertical and horizontal colinear direct vent applications,
a colinear transition plate can be used to minimize clearances be-
tween intake and exhaust pipes.
For horizontal colinear direct venting, exhaust and intake air, cap
pipes with 90º elbows, pointed downward.
Note: If transition plate is used, the measurement for center to
center of the pipes will be 2.5”. If the transition plate is not used,
the measurement for center to center of the pipes can be 3” to 24”
maximum.
Note: Must maintain a minimum 3” between
exhaust outlet and air intake.
EXTERIOR GRADE
12” MIN.
9” MIN.
MIN. 2”
6” MIN.
3” MIN.
Figure 32