31
Venting for Direct-Vent Water Heater
Horizontal Vent Installation (cont.)
Using a thick bead of high temperature silicone,
seal the overlapping area of the outer 5-in. (12.7-
cm) pipe.
Attach required vent sections between the water
heater collar and the horizontal vent termination.
Typical Horizontal Termination with
1/4 In. Per Foot of DOWNWARD Slope
CAUTION:
The condensate collector must be used in
horizontal terminations if vertical rise in the vent
system exceeds 2 feet (610 mm).*
NOTICES:
• Maintain the proper clearance between the
vent pipe and combustible or noncombustible
materials as described on page 16.
• A clearance of 0 in. (0 cm) is allowed between
the air intake pipes and combustible material.
• Use proper support for the vent and air intake
pipes as described on "Venting".
• Support method used should isolate the
vent pipe from floor joists or other structural
members. This helps prevent transmission of
noise and vibration.
• DO NOT support, pin, or secure the venting
system in a way that restricts the normal
thermal expansion and contraction of the
chosen venting material.
3
Vent Pipe Wall Plate
Inspection
Access Panel
(Optional)
Inspection
Access Panel
(Optional)
Ceiling Fire
Stop
2' max.*
(610 mm)
1/4" Per Foot Downward Slope
90˚
Elbow
Venting
INSTALLATION INSTRUCTIONS
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