Initial Installation
QUALIFIED INSTALLERS ONLY
(b)For buildings with vinyl siding, a vinyl siding standoff, should be installed between the vent cap and the exterior wall (see Figure 29). Attach the vinyl siding standoff to the horizontal termination. The vinyl siding standoff prevents excessive heat from possibly melting the vinyl siding material. Note that the horizontal vent termination bolts onto the flat portion of the vinyl siding standoff (shaded area in Figure 29), so that an air space will exist between the wall and the vent termination.
(c)The horizontal run of vent pipe must be level and should have a 11⁄4 inch (32mm) rise for every one foot (305mm) of run towards the termination. Never allow the vent to run downward. This could cause high temperature and may present the possibility of a fire.
(d)The location of the horizontal vent termination on the exterior wall must not be easily blocked or obstructed.
(e)When installing a vent pipe in a chase the minimum clearance to combustibles is 2” (51 mm).
(f)Maintain manufacturer’s clearances to combustibles with venting.
Figure 31: Installation for Cara DR.
INSTALLATION WITH OPTIONAL SNORKEL:
If necessary to get above grade the Cara DR can be installed using a 14” or 36” snorkel.
Place the unit into position.
Attach a small section of pipe on the unit and mark exterior wall where vent would pass through the wall.
Cut a 10” (25.4 cm) minimum hole in the wall to maintain clearances to combustibles. Frame hole as shown in Figure 27.
Install a wall thimble, interior finished collar, and the vent section through the wall.
Seal around the vent terminal to the structure using a non- hardening mastic.
Also refer to INITIAL INSTALLATION - INSTALLATION OF APPLIANCE.
Figure 32: Installation for Cara DR with a
snorkel.
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