Vertical Vent Cap Termination; Venting Requirements - Breckwell BH23 Owner’s Instruction And Operation Manual

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Table of Contents

WARNING:

ALWAYS MAINTAIN MINIMUM CLEARANCES AROUND

VENT SYSTEMS. THE MINIMUM CLEARANCES TO

COMBUSTIBLES FOR HORIZONTAL VENT PIPE ARE

2" AT THE TOP AND 1" AT THE SIDES AND BOTTOM

OF THE VENT SYSTEM. FOR WALL FIRESTOPS, A 1"

MINIMUM CLEARANCE ALL AROUND THE PIPE MUST

BE MAINTAINED. DO NOT PACK THE OPEN AIR SPACES

WITH INSULATION OR OTHER MATERIALS. THIS COULD

CAUSE HIGH TEMPERATURES AND MAY PRESENT A FIRE

HAZARD.

APPROVED VENT TERMINATIONS

46DVA-HC

46DVA-H2

46DVA-HSCH

DuraVent

46DVA-SNK14

46DVA-H2-SNK14

46DVA-VCH

46DVA-4C

TM-45ST14

TM-4HT

ICC

TM-4RHT

TM-4SVT

BDM

DVR-HC

Olympia

VDV-HC04

VENTING REQUIREMENTS

Consult the local and national installation codes to assure

adequate combustion and ventilation air is available.

Venting requirements apply to both natural gas and LP gas.

• Flame height and appearance will vary depending upon

venting configuration and the type of fuel used.

• Refer to the vent manufacturer's installation manual for

complete installation instructions. Vent installation must

conform with venting requirements and restrictions as

outlined in this manual.

• Provide a means for visually checking the vent connection

to the appliance after it is installed.

VENT SECTION CLEARANCES

NOTES: Wall thimble products that comply with the required

1" (25 mm) clearance to combustibles must be installed for

all horizontal vent runs that pass through interior or exterior

walls. These wall thimble products may be insulated using

unfaced insulation products listed as noncombustible per

ASTM E 136.

NOTES: Attic insulation shields may be insulated using

unfaced insulation products listed as noncombustible per

ASTM E 136.

Horizontal

USE OF ELBOWS

• MAXIMUM NUMBER OF 90° ELBOWS: 4

Vertical

• For each additional 90° elbow used after the first 90°

Vertical

elbow, 3 ft (91.4 cm) must be subtracted from maximum

Horizontal

venting allowed.

Horizontal

• For each 45° elbow used, 1½ ft (457 mm) must be

Horizontal

subtracted from maximum venting allowed.

Vertical

• (2) 45° degree elbows may be used in place of (1) 90°

elbow.

Horizontal