Installation of Vent SYSTEM, Sidewall

With the route of the venting system and selection of materials completed, as discussed in the section of this manual titled PLANNING THE VENT SYSTEM, the through the wall vent terminal in place and the first section of piping, up to first elbow, installed at the blower it is time to complete the installation of the venting system for the sidewall installation.

FIGURE 8

Before completing the installation of the venting system be sure to read the sections of this manual discussing the proper method of cutting and cementing PVC pipe and fittings: VENT PIPE PREPARATION.

It is recommended that the completion of the venting system start at the blower assembly and run to the coupling on the inside wall of the vent terminal, Figure 6.

The vent system piping should be supported every 5 feet of vertical run and every 3 feet of horizontal run. All piping and fittings must be joined by the proper procedures as described under: VENT PIPE PREPARATION.

INSTALLATION OF VERTICAL VENT SYSTEM

A proper flashing or "BOOT" should be used to seal the pipe where it exits the roof. The total vent system should not exceed the equivalent feet of pipe as listed in Table 1.

Provide support for all pipe protruding through the roof. All piping should be properly secured. The vent system piping should be supported every 5 feet of vertical run and every 3 feet of horizontal run. All piping and fittings must be joined by the proper procedures as described under: VENT PIPE PREPARATION.

FIGURE 9

IMPORTANT

The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the National Fuel Gas Code, ANSI Z223.1 and as listed below:

1.Vent Termination must extend a minimum of 18 inches above roof or 18 inches above the anticipated snow level to prevent blockage of the vent termination, as shown in Figures 8 and 9.

2.The venting system shall terminate at least four (4) feet from or one (1) foot above any gable, dormer or other roof structure with building interior access; i.e., vent, window, etc.

3.The venting system shall terminate three (3) feet above any forced air inlet located within ten feet.

BTX-80 specifications

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