NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
9
When installed as a Wall Support, the band
must be secured to the vent with the supplied
1/4” hex head screws. To do so, first install the
assembly as indicated above for a Wall Band.
With a 1/16” drill bit, carefully drill holes through
the ouside of the vent section (ONLY), using
the holes in the band as a guide. Complete
the assembly by inserting the #8x1/4” hex
head screws through the holes (2 screws for
3” through 6”, 3 screws for 7” and 8” diameter
vent) and tighten.
NOTE: WHEN DRILLING OUTER WALL OF
VENT BE CAREFUL TO DRILL THROUGH
THE OUTER WALL ONLY, NOT THE INNER
WALL.
NOTE: REMEMBER TO MAINTAIN THE
REQUIRED MINIMUM AIR SPACE CLEAR-
ANCE TO COMBUSTIBLES FROM THE
OUTSIDE OF THE VENT.
CAUTION: WEAR GLOVES WHILE HAN-
DLING METAL PARTS TO AVOID PERSONAL
INJURY, SHARP EDGES OR PROJECTIONS
CAN CUT YOU.
When installed as a Wall Band, slip a vent
section through the band and clamp loosely
in place using the bolt and nut provided. Mark
the locations for the screws which will attach
the assembly to the wall. Secure the assembly
using four #10 wood screws provided. Secure
(clamp) the band around the vent by tightening
the screw and nut.
90°
Elbow
Type B
Vent
10. USE OF GAS VENT FITTINGS
Do not cut gas vent pipe or fittings. Adjustable
Lengths are telescoped over fixed lengths, to
accommodate odd distances between vent
lengths or connectors. An Adjustable Length
suspended below a support serves as an
expansion joint between two fixed points of
properly supported gas vent. Ordinarily, the
Adjustable Length must be secured, but for
expansion joints it should just maintain good
contact and a minimum 1-1/2” overlap. DO
NOT USE Adjustable Lengths to suspend any
weight of pipe below.
Elbows are fully adjustable. Tees used to
start vertical vents must use a Tee Cap to
prevent air leakage. All unused openings in
a gas vent must be sealed to prevent loss of
effective vent draft.
Adjustable Length
Draft Hood
Connector
Firestop
Spacer
or Wall
Thimble
Wall
Support/
Band
Tee
Tee
Cap
FIG. 8 - Interior Wall Penetration for Type B Vent
CLEARANCE TO
BODY BRANCH COMBUSTIBLES
4” 3” 1”
4” 4” 1”
5” 3” 1”
5” 4” 1”
6” 3” 1”
6” 4” 1”
6” 5” 1”
On many newer gas appliances designed with
efficiencies of 78% to 83% (mid-efficiency
appliances, commonly referred to as fan
assisted appliances), it is important that the
connector system maintain the maximum
amount of heat as possible, in order to reduce
the chances of excessive condensation in the
venting system
Therefore, according to the current vent
sizing guidelines in many situations it will
be necessary to use Type B vent as the
connector system. As a convenience for use
in such installations, a fixed wye fitting is
available for maximum installation flexibility.
The common vent extends from the ceiling
and the wye is attached in the manner as a
Tee. The body of the wye, can be rotated 360
degrees to accommodate the position of the
water heater or smaller appliance.
The lower section is connected to the main
FIXED WYE -
SIZES AVAILABLE
