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TECHNICAL DATA SHEET
Concentric Vent
Product
Purpose
Features
Concentric Vent
The Concentric Vent allows both the intake for combustion air and the exhaust vent to pass through a standard
roof or sidewall. This is an alternative to the standard two
pipe intake/vent shown in the basic Category IV
appliance installation instructions.
Three Concentric Vent products are available: CVENT-2 is
for use with 2” intake/vent systems, CVENT-3 is for use with
3” intake/vent systems and CVENT-4 is for use with 4”
intake/vent systems. Refer to the Category IV appliance
installation instructions for intake/vent pipe sizing information.
NOTE: The Concentric Vent reduces the allowable
intake/vent piping length by 5 feet from that listed in the
basic Category IV appliance installation instructions.
WARNING
Do not use the Concentric Vent kit for anything other than
a Category IV heating applicance. Failure to follow this
warning could result in re, personal injury or death.
WARNING
Do not operate the furnace until the installation and
assembly of the Concentric Vent and all piping are
completed. Failure to follow this warning could result in
product damage or improper operation, personal injury or
death.
Each concentric vent kit contains the following items:
(1) Combustion Air Inlet Cap
(1) Air Inlet Pipe
(1) Vent Pipe
(1) Intake/Vent Concentric “Y”
(1) Installation Instructions on box
Pipe and ttings are required to complete installation
(user supplied). The combustion air and vent pipe ttings
must conform ANSI and ASTM standards D1785, F891,
D2665, D2241, D2661, or F628. Pipe cement and primer
must conform to ASTM standards D2564 or D2235. In
Canada, construct all combustion air and vent pipes for
this unit of CSA or ULC certied Schedule 40 PVC,
General Characteristics
Model
CV EN T- 2 2 ” 34 3 /4 “ 3 1/ 2” 19 1 /2 “
CV EN T- 3 3 ” 39 1 /8 “ 4 1/ 2” 24 “
CV EN T- 4 4 ” 57 1 /4 ” 5 9 /1 6” 4 1”
INTAKE/VENT NOM. OVERALL ASSEM’D INTAKE PIPE OUTSIDE AIR INLET PIPE
PIPE SIZE LENGTH 1 DIAMETER LENGTH 2
DOC32214
www.diversitech.com
1.800.995.2222
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