Thomas & Betts RGM 405 사용자 설명서

Any length of single-wall vent pipe exposed to cold air or run
through an unheated area or an area with an ambient temperature
of 45°F or less must be insulated along its entire length with a
minimum of 1/2" foil-faced fiberglass, 1-1/2# density insulation.
Where extreme conditions are anticipated, install a means of con-
densate disposal.

The vent system must be terminated with the type of vent cap
approved for use with this heater. The vent cap must be the same
size as the vent pipe. Use either a vent cap available from the

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

4 ft (1.2m) horizontally

(any building opening)

4 ft (1.2m) below
1 ft (30cm) above

Electric meter, gas meter* and relief

4 ft (1.2m)

*Do not terminate the vent

equipment

horizontally

directly above a gas meter

Gas regulator*

3 ft (0.9m)

or  service regulator.

Adjoining building or parapet

6 ft (1.8m)

Adjacent public walkways

7 ft (2.1m) above

Grade (ground level)

7 ft (2.1m) above

heater manufacturer (Option CC1) or a field-supplied cap. If the vent cap is
field-supplied, use a Type L Breidert Air-x-hauster

®

 or equivalent vent cap.

(Type L Air-x-hauster

®

 is a trademark of The G. C. Breidert Company.) Use

of a vent cap supplied by the pipe manufacturer is not permitted; the vent
cap must be the type approved for use with this heater. A different style
vent cap could cause nuisance problems or unsafe conditions.
See the illustrations in Figures 9A and 9B 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 termi-
nal with a single-wall vent run, follow the instructions on page 10 to attach
the vent cap and to connect the double-wall pipe to the single-wall vent pipe
run.

A vent cap is required. Maintain a clearance
of 12" from the wall to the vent terminal cap
for stability under wind conditions.

Products of combustion can cause discolora-
tion of some building finishes and deteriora-
tion of masonry materials. Applying a clear
silicone sealant that is normally used to pro-
tect concrete driveways can protect masonry
materials. If discoloration is an esthetic prob-
lem, relocate the vent or install a vertical vent.