Direct Vent Installation of Vent/Air Piping
9
SECTION II - DIRECT VENT INSTALLATION
OF VENT/AIR PIPING
A Direct Vent appliance utilizes uncontaminated outdoor
air (piped directly to the appliance) for combustion.
Direct Vent - Vertical - Thru the Roof or An Unused
Chimney
Installation of the vent and combustion air pip-
ing must comply with local codes and require-
ments and with the National Fuel Gas Code
NFPA 54, ANSI Z223.1 for installations in the U.S.
or CSA B149.1 or B149.2 for installations in
Canada.
When using an unused chimney as a means of a
raceway for the vent, the surrounding space
within the chimney cannot be used to draw com-
bustion air or vent another appliance.
A gas vent extending through a roof should not
terminate near an adjacent wall or below any
building extensions such as roof eaves, bal-
conies or decks. Failure to comply with the
required clearances could result in severe per-
sonal injury, death or substantial property dam-
age.
The installer has two options when direct venting verti-
cally, Concentric or Two Pipe. Both vent options are
shown in Figs. 5 & 6 and are available in accessory kits
through Triangle Tube. See Fig. 6 page 10 for Two Pipe
installation details or the MODULATING DELTA
Concentric Vent Installation Manual for additional
Concentric details.
WARNING
NOTICE
NOTICE
Fire Stop/Support
Tall Cone
Flashing
5" Storm
Collar
Vertical
Termination
Adapter
Rain Cap
Hose
Clamps
Flexible
Air Hose
Combustion
Air Inlet
Spring
Clip
Flue
Outlet
Condensate
Drain Hose
3" Diameter
Trap Loop
Cable
Ties
To Drain According
to Local Codes
000
Direct Vent - Vertical Concentric.
See
MODULATING DELTA Concentric Vent
Installation Manual for Installation Details
Fig. 5:
