Reznor RA 140 Guide de dépannage télécharger pdf (Page 15)

Form I-RA/D 140/235 (Version A), Mfg No. 110318 Rev 3, Page 15

Vent Cap

Factory Built Vent

8 ft (2.4M)

Minimum

Single Wall Pipe

Barometric Draft

Regulator

(alternate location)

Tee with

Cleanout

Barometric

Draft

Regulator

Draft Inducer

(if required)

Factory Built Vent

Roof jack recommended by the

manufacturer of the factory built vent

3 ft (914mm)

minimum

2 ft (6.0mm)

minimum

Ventilated Thimble

if construction

is combustible

Single Wall Pipe or

Factory Built Vent

Detailed Require-

ments for the Vent

System (read all

before beginning

installation)

• Any portion of the vent

system that passes

through an unheated

space or a concealed

area such as an “attic”

must be a factory-built

vent that is approved to

Standard UL 641. See

illustration . .

. . . . . . . . .

• The heater may be

vented into a masonry

chimney that complies

with the BOCA Na-

tional Mechanical Code

for low-heat appliances

or other building code

requirements for low-

heat appliances.

• Pipe/Joints/Clearances: Single-wall pipe must be a minimum of 24

gauge galvanized steel for 8” or 9” diameter pipe and 22 gauge for 10”

or 12” diameter pipe. Each joint must be secured with three screws or

rivets. If installing a factory-built vent, follow the manufacturer’s

instructions.

If the vent system passes through a combustible wall, material or roof,

for single wall pipe, maintain 18” (457mm) clearance or install a

ventilated thimble that is not less than 12” (305mm) larger than the

diameter of the vent pipe. If installing factory-built vent, follow the

manufacturer’s instructions.

• Horizontal Length and Slope: The horizontal portion of the vent

must comply with the maximum horizontal length shown in the table

below and have not more than two elbows. Horizontal portions must

be sloped upward 1/4” for each foot of pipe. If installation conditions

require horizontal lengths in excess of those permitted in the table, a

draft inducer must be used.

Vent Pipe Model Size and Maximum Length

Diameter Vertical Length of Horizontal Pipe

8” 140 with 8 feet (2.4M) or Equal to or less than

more of vertical pipe the vertical height

8” 235 with 8 feet (2.4M) 4 feet (1.2M) or less

of vertical pipe

8” 235 with 10 feet (3M) Equal to or less than

of vertical pipe the vertical height

• Vent Size: The vent system must be at least 8” in diameter.

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Reznor RA 140 Guide de dépannage Page 15

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