Avalon Firestyles B-Vent-1995 - Manual (Page 20)

P AGE 20
I
NSERT
I
NSTALLATION
(C
ONT
.) -
For qualified installers only!
Vent Requirements
! Always maintain the required 1" clearance (air space) to combustible materials to prevent a fire
hazard. Do not fill air spaces with insulation.
! The gas appliance and vent system must be vented directly to the outside of the building, and never
be attached to a chimney serving a separate solid fuel or gas-burning appliance.
¥ The vent must reline the entire length of the chimney and have a minimum 5' vertical rise
¥ Horizontal run may not exceed 50% of the vertical rise
¥ Use 4" listed gas chimney liner or B vent from one manufacturer (don't mix brands)
? When using flexible gas vent, do not crimp or rupture the liner when bending it into chimney offsets
¥ When installed, the vent must meet all of the vent manufacturer's requirements
? When installed, the vent must provide suitable draft for the appliance. Other factors, such as exhaust
fans, may create negative pressure inside the home and cause down drafts. Additional vent height
may be required in these circumstances.
4" Listed gas chimney
liner or B Vent
Hearth and/or hearth
pad must extend
underneath insert
Z.C. (Metal)
firebox
6"
Min.
A sealed cover plate
is recommended, but
not required.
Surround
Panel
(Do not seal)
17-1/2"
Min.
6"
Min.
Leveling bolts for step-up hearths
Zero
Clearance
Fireplace
Surround Panel
(Do not seal)
Approved Cap
Masonry
Fireplace
17-1/2"
Min. We recommend sealing this
area to prevent heat loss.
Vent Termination Requirements
¥ Vent termination must have an approved cap (to prevent water from entering)
¥ Vent termination must not be located where it will become plugged by snow or other material
¥ Vent termination must extend a minimum of 6" above the top of the chimney