Install Instructions

2
Type B Gas Vent - 3” to 12” Diameter
Installation Instructions
• Portions of g as 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 fire-
resistance rating provisions. See all local and
national codes that may apply.
• Unenclosed outside vents below the roofline are
prohibited.
• No damper or other restriction is permitted in a
gas vent.
gure 1
• Single-wall connectors and stovepipes may be
used with Hart & Cooley Type B vent with the
following considerations: The use of single-wall
materials cause higher heat loss from the flue
products, which in turn reduce the draft and may
cause condensation to occur.
(A) Since the heat loss from single-wall pipe
is double that from Hart & Cooley pipe, be sure
to use the capacity table for single-wall connector.
(B) Observe the local requirements for
clearance to combustibles for single-wall pipe.
This distance is 6" to 9" in most areas.
(C) Do not run single-wall connectors through
unheated spaces, partitions, or in concealed
areas.
Step-by-step installation procedure
Assembly of the vent
Firestop Support
The Firestop Support (FSP) serves
as both a
firestop as well as a support. Each support is
designed to support up to 20 feet of vent pipe
when installed as follows:
1. It is recommended that the Vent Pipe be supported
at least every other floor. The distance between
must not, in any case, exceed 20 feet.
2. Frame in an opening providing proper
clearance to Type B Gas Vent. See Figure 1
and Table 1.
Figure 1
Vent Size
“A” Square
3RP
4RP
5RP
6RP
7RP
8RP
5-1/2 inches
6-1/2 inches
7-1/2 inches
8-1/2 inches
10-1/2 inches
11-1/2 inches
3. Secure Firestop Support (FSP) as shown in
Figure 2. Install strapping (minimum 3/4”, 28-
gauge) through all four slots in collar, and nail as
shown or nail at all four slots as shown in Figure
3 and Figure 4.
Table 1