John Wood Envirosense Power Direct Vent (prior to May 2010) - Manual (Page 21)

21
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 22.
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 18A.
The vent system piping should be supported every 5 feet (1.5 m)
of vertical run and every 3 feet (91 cm) 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 (1.5 m) of vertical run and every 3 feet (91 cm)
of horizontal run. All piping and fittings must be joined by the proper
procedures as described under: VENT PIPE PREPARATION.
fIGure 23.
IMportant
The vent system must terminate so that proper clearances are
maintained as cited in local codes or the current edition of the
Natural Gas and Propane Installation Code (CAN/CSA-B149.1) and
as listed below:
1. Vent Termination must extend a minimum of 12 inches (30.5 cm)
above roof or above the anticipated snow level to prevent blockage
of the vent termination, as shown in Figures 20 and 21.
concentrIc vent InstallatIon
This appliance is certified for concentric venting with concentric vent
kit #9006328005. Follow instructions below for proper installations.
KIt coMponents
Each kit is comprised of the following:
Item Description Qty.
Rain Cap 3 in. 1
SDR-26 pipe 4 in. dia. 1
SDR-26 pipe 2½ in. dia. 1
Y Concentric Fitting 3 in. 1
Installation Instructions 194504 1
Field supplied pipe and fittings are required to complete the
installation.