Install Instructions

ManualsBrandsHart & Cooley ManualsPlumbing Supplies3" x 18" B Round Gas Vent Pipe (3RP18)

Please read and understand the requirements before proceeding.

Hart & Cooley Type B gas vent pipe and fittings are

Underwriters Laboratories-tested and listed to

Standard 441 for use with listed gas-fired appliances

that have been certified for use with Type B gas vent.

B-Vent is intended for neutral or negative draft

applications. It is designed for vertical installations

(including laterals) but may be used for horizontal

applications with a draft-inducing fan located such

that all indoor portions of the vent are under negative

pressure.

The materials in this B-Vent have been selected to

provide maximum resistance to corrosion and heat;

however, their use with temperatures exceeding

550° F or in highly corrosive atmospheres, such as

chlorinated hydrocarbons (i.e., refrigerants, dry-

cleaning fluids, degreasers, paint removers, etc.),

may substantially reduce their life expectancy.

These installation instructions will enable the installer

to make a safe and proper installation of the vent.

Compliance with these instructions will ensure an

installation that meets the requirements of all National

Building Codes and the National Fuel Gas Code,

NFPA 54 and NFPA 211. Hart & Cooley Type B gas

vents are listed under the follow-up service of

Underwriters Laboratories, Inc.

Gas appliances that may be connected to Type B

gas vents

Type B gas vents may be used to vent gas appliances

listed for use with Type B gas vent.

These vents shall be installed in accordance with our

listing as detailed in these installation instructions.

The type of appliances that may be vented with these

vents include:

Unit heaters Room (space) heaters

Duct furnaces Central warm-air furnaces

Attic furnaces Hot-water boilers

Floor furnaces Steam boilers

Water heaters

Gas appliances that must be connected to

chimneys

The following appliances must be connected to

chimneys.

• All incinerators in domestic applications

• All appliances that may be converted readily to the

use of solid or liquid fuels

• Combination gas/oil-burning appliances

• Unlisted appliances

General instructions

• The vent should always be sized for the sea-level

name plate input rating of appliances in accordance

with the procedures set forth in the Gas Vent

Capacity Tables, which appear in the Gas vent

chimney sizing and application guide or in NFPA

54.

• Provide for adequate air supply for combustion air

and draft-hood dilution air. Refer to NFPA 54 or the

application guide for recommended arrangements

and proper size of air supply openings.

• Use only parts and fittings listed in the catalog to

ensure an approved vent.

CAUTION

Flue gas temperatures must never exceed

550° F in any Hart & Cooley gas vent system.

CAUTION

Hart & Cooley Type B vents are not to be used

with appliances burning solid or liquid fuels.

Installation Instructions

Type B Gas Vent - 3" to 12" Diameter

Summary of content (8 pages)

PAGE 1
Installation Instructions Type B Gas Vent - 3" to 12" Diameter Please read and understand the requirements before proceeding. Hart & Cooley Type B gas vent pipe and fittings are Underwriters Laboratories-tested and listed to Standard 441 for use with listed gas-fired appliances that have been certified for use with Type B gas vent. B-Vent is intended for neutral or negative draft applications.
PAGE 2
Type B Gas Vent - 3" to 12" Diameter Installation Instructions • Portions of gas vents that may pass through accessible spaces must be enclosed to prevent personal contact with and possible damage to the vent. The enclosure also may have to meet fireresistance rating provisions. See all local and national codes that may apply. Figure 1 Figure 1 shows the installation of an RSA support assembly. • Unenclosed outside vents below the roofline are prohibited.
PAGE 3
Type B Gas Vent - 3" to 12" Diameter Installation Instructions Installation of vent pipe in the RSA support • Place a supporting collar in the groove at the bottom end of any standard pipe just above the locking ring. Tighten the screw so that the collar is firmly clamped into position in the groove. The pipe is now assembled properly to fit into the support plate. (See Figure 4.
PAGE 4
Type B Gas Vent - 3" to 12" Diameter Installation Instructions • If for some reason it is (B) The necessary straight lengths of pipe should be connected to the elbow, tee, or the draft hood connector, and all joints should be securely locked together as indicated above. necessary to uncouple a joint, this may be easily done by sliding up the lock ring and moving the top section slightly to loosen the tabs. The section can then be lifted off.
PAGE 5
Type B Gas Vent - 3" to 12" Diameter Installation Instructions Framing to prevent contact with building insulation • In many instances, vents pass through ceilings that are insulated. In these cases, it is necessary to frame around the opening cut in the ceiling for passage of the vent pipe so that building insulation or other combustible material will not come in contact with the surface of the vent.
PAGE 6
Type B Gas Vent - 3" to 12" Diameter Installation Instructions Terminations using a flashing and a cap Models RHW and RM caps, sizes 3" through 12", are listed for installation on gas vents terminating so that the lowest discharge opening shall be no closer than the minimum height shown in Table 1 and Figure 12. These minimum heights may be used, provided that the vent is not less than 8 feet from any vertical wall.
PAGE 7
Type B Gas Vent - 3" to 12" Diameter Installation Instructions Notice concerning limitation of Hart & Cooley pipe used with gas appliances • Gas vent systems should be plainly and permanently labeled: This gas vent is for appliances that burn gas only. Do not connect to incinerators or solid or liquid fuel-burning appliances. Inspect the vent prior to each heating season to confirm an unrestricted vent.
PAGE 8
Type B Gas Vent - 3" to 12" Diameter Installation Instructions • If pipe assemblies are lowered into place from Installation instructions for Hart & Cooley UL-listed Type B gas vent adapters above, sheet metal screws should be used to hold the lock bands in place. The following table specifies the UL-listed adapters to be used when changing between Hart & Cooley and B-vent manufactured by others. • Terminate the vent with a tall cone flashing (RTF), storm collar (RS), and appropriate diameter cap.