Reznor CAUA Unit Installation Manual Instrukcja Użytkownika Pobierz pdf (Strona 23)

Form I-CAUA, P/N 164771 R8, Page 23

Horizontal Vent

Terminal Clearances

A vent cap is required. Maintain a clearance of 12" (305mm) from the wall to the vent

terminal cap for stability under wind conditions.

Products of combustion can cause discoloration of some building nishes and dete-

rioration of masonry materials. Applying a clear silicone sealant that is normally used

to protect concrete driveways can protect masonry materials. If discoloration is an

esthetic problem, relocate the vent or install a vertical vent.

TABLE 14 - Horizontal

Vent Clearances

Structure

Minimum Clearances for Vent Terminal Location (all directions

unless specied)

Forced air inlet within 10 ft (3.1M)* 3 ft (0.9M) above

Combustion air inlet of another appliance 6 ft (1.8M)

Door, window, or gravity air inlet (any building opening) 4 ft (1.2M) horizontally; 4 ft (1.2M) below; 1 ft (305mm) above

Electric meter, gas meter ** and relief equipment U.S. - 4 ft (1.2M) horizontally; Canada - 6 ft (1.8M)

Gas regulator ** U.S. - 3 ft (0.9M); Canada - 6 ft (1.8M) horizontally

Adjoining building or parapet 6 ft (1.8M)

Adjacent public walkways 7 ft (2.1M) above

Grade (ground level) 3 ft (.9M) above***

*Does not apply to the inlet of a direct vent appliance. **Do not terminate the vent directly above a gas meter or service regulator.

*** Consider local snow depth conditions. The vent must be at least 6” (152mm) higher than anticipated snow depth.

Single-Wall Vent Run

and Double-Wall

Terminal

NOTE: Drawing is not

proportional; read all

measurements.

FIGURE 17 - Horizontal

Vent Terminals

Single-Wall Vent Run and

Single-Wall Terminal

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NOTE: Drawing is not

proportional; read all

measurements.

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available with the heater (Option CC1) is recommended. A different style vent cap

could cause nuisance problems or unsafe conditions.

See the illustrations in FIGURES 17 and 18 for requirements of vertical and horizontal

vent termination. The vent terminal pipe may be either single-wall or double-wall (Type

B). If double-wall pipe is used in the vent terminal with a single-wall vent run, follow the

illustrated instructions in FIGURES 16B and 16C to attach the vent cap and to connect

the double-wall pipe to the single-wall vent pipe run.

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 43 44

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