Installing the water heater.
Insert 1/2" Mesh Protective Screen Inside
Terminal Elbow
Short Piece of Vent Pipe
Min. 12" (30,5cm)5 |
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Above Roof |
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| Through Roof | |
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Min. 12" (30,5cm) Above |
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Anticipated Snow Level4 |
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Max. 24" (61cm) Above | Elbows |
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Roof (Without Additional
Support)
4Not applicable for Canada Installations.
Vertical Vent Termination
Minimum twelve (12) inches (30,5 cm)5 above roof.
Minimum twelve (12) inches (30,5 cm)6 above anticipated snow level.
Maximum
Ten (10) feet (3,05m)7 from any forced air inlet to the building. Any fresh or
5For installations in Canada 18” (45,7 cm).
6Not applicable for installations in Canada.
7For installations in Canada 6´ (1,8 m).
NOTICE: Canadian vent termination/location must follow CSA B149 requirements and may vary from above.
Horizontal Vent Installation
Mortar or
Silicone Caulk
Vent Pipe
From
Water Heater
Pipe Coupling
Recommended 2' x 2'
Sheet Metal Shield
on Brick or Masonry Walls
Vent Terminal with
1/2" Mesh Protective Screen Inside
Outside of |
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Building |
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Wall |
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Once the vent terminal location has been determined, make a hole through the exterior wall to accommodate the 3” or 4” vent pipe. Vent pipe must exit exterior wall only.
Insert a small length of 3” or 4” vent pipe through the wall and connect the coupling as shown.
Place the ½” mesh metal screen inside the terminal fitting and connect it as shown to the vent pipe on the exterior of the building.
Seal any opening around the vent pipe or fittings with mortar or silicone caulk as shown.
Complete the rest of the vent pipe installation to the water heater’s vent connector fitting on the blower outlet. If necessary support horizontal run as previously mentioned.
Use silicone sealant at the point the vent connector joins the blower assembly.
Draining the Condensate
In certain conditions, installations in unconditioned space or having long horizontal or vertical runs may accumulate condensate.
In order to prevent condensate from draining back into the blower, we recommend a condensate tee and drain to be installed in a horizontal vent section as close as practical to the blower vent connection.
Condensate is known to be acidic; refer to local, state (provincial) or federal codes for proper handling methods.
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