Burnham PVG Boiler User Manual


 
19
1. Do not exceed maximum vent lengths. Refer to
Table 4.
2. This installation will allow a maximum of seven
(7) feet vertical exterior run of the vent piping to be
installed .
NOTICE
Exterior run to be included in equivalent vent
lengths.
3. Install vent piping.
a. Install vent piping for desired venting system.
Refer to specic section for details for vent pipe
installation.
F. Optional Exterior Separate Horizontal Vent Terminal Mounting – See Figure 9.
b. After penetrating wall/thimble, install an
AL 29-4C
®
90° elbow so that elbow leg is in the
up direction.
c. Install maximum of ve (5) feet of AL 29-4C
®
vent pipe. Refer to Sections C through E for
proper procedures for joining vent pipe and
ttings.
d. Install AL 29-4C
®
45° elbow to upper AL 29-4C
®
90° elbow so that leg of 45° is in down direction
(see Figure 9).
f. Install vent terminal.
g. Brace piping if required.
Figure 9: Horizontal Vent Terminal Installation (3” Vent [left view] or 4” Vent [right view])