Reznor CAUA Unit Installation Manual Bedienungsanleitung PDF herunterladen (Seite 18)

Form I-CAUA, P/N 164771 R8, Page 18

FIGURE 10 - Assemble Concentric Adapter Box, Outdoor Combustion Air Pipe, and Double-Wall

Vent Pipe

b. Attach the outside portion of the combustion air pipe to the box. Determine

the length of the combustion air pipe so that dimension ”X” in FIGURE 10 is equal to

the bracket length, plus the roof thickness, plus anticipated snow depth, but does not

exceed 48“ (1219mm) or have less than 18” (457mm) of pipe above the roof. Attach

the inlet air pipe to the collar of the concentric adapter box with sheetmetal screws.

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

FIGURE 11 - Slide

attached Combustion

Air Pipe up through the

Roof

5) Attach the concentric adapter box to the roof. On the inside, insert the

combustion air pipe up through the opening and attach brackets to the roof. (See

FIGURES 10 and 11.) On the outside, ash the combustion air pipe to the roof.

Flashing is eld supplied.

6) Determine the length and install the double-wall vent pipe.

a. Determine the minimum length of the continuous section of double-wall vent

pipe (no joints). See FIGURE 10. The vent pipe extending through the box and the

inlet air pipe must be one piece of double-wall vent pipe without joints.

Determine the length by adding the requirements. Starting at the bottom, the

maximum the vent pipe can extend below the box is 6" (152mm); plus 6" (152mm)

through the box; plus length of bracket extending above the box; plus the width

of the roof; plus the height of the outside combustion air pipe above the roof; plus

a minimum of 3" (76mm) beyond the top of the inlet air pipe. Total is the minimum

length of the vent pipe section. If the actual piece of vent pipe is longer, extend it

further above the combustion air pipe. Do not extend it more than 6" (152mm) below

the box.

b. Install the pipe. Being sure the pipe is in the proper ow direction, slide the end

into the box and out through the combustion air pipe. Position the vent pipe so that

6.0 Mechanical

(cont'd)

6.2 Venting and

Combustion Air

(cont'd)

6.2.1.2 VERTICAL Vent Instructions (cont'd)

6.2.1 Venting and Combustion Air Requirements for a Separated

Combustion (cont'd)

Installation Instructions for Vertical Vent/Combustion Air Kit (cont'd)

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 43 44

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