Reznor APD Manual

INSTALLATION—CONTINUED
Vent Terminal Options—Continued
Vertical Vent Terminal (Option CC2) Installation—Continued
2. Install vent pipe and combustion air pipe runs:
a. Connect piping to heater in accordance with specifications listed in Venting and Combustion Air Requirements
section.
b. Seal all joints in accordance with specifications listed in Venting and Combustion Air Requirements section.
Due to high temperature considerations, do not enclose exhaust pipe or place pipe closer than 6 inches (152
mm) to combustible material.
c. Extend piping runs close to roof at location selected in step 1 and support piping in accordance with specifications
listed in Venting and Combustion Air Requirements section.
NOTE: The vent pipe will extend through the roof after the concentric adapter box is installed. The
indoor combustion air pipe will end at the box.
3. Cut hole through outside wall for combustion air pipe.
a. Ensure that location and orientation of concentric adapter box are correct and mark and cut hole.
b. Ensure that hole accommodates 8-inch (203-mm) combustion air pipe.
4. Connect combustion air pipe to concentric adapter box (see Figure 13):
a. Determine length of combustion air pipe so that dimension X in Figure 13 is equal to roof thickness plus
anticipated snow depth. Ensure that length of combustion air pipe does not exceed 48 inches (1,219 mm) or
does not extend less than 18 inches (457 mm) above roof.
b. Secure inlet air pipe to collar of concentric adapter box using sheet metal screws. Seal joint and seam using
tape or sealant.
Figure 13. Combustion Air Pipe Installation
DETAIL A
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I-UEZ (04-21) 1034347-0

Reznor APD Specifications

General

Brand	Reznor
Model	APD
Category	Gas Heater
Language	English