Submittal Sheet

2
SPECIAL STAINLESS STEEL VENTING
For use with Category I, II, III, & IV gas burning appliances
Contact Local Building or Fire Officials about Restrictions and Installation Inspections in your area as well as National codes: USA -
National Fuel Gas Code ANSI-Z223.1/NFPA 54, CANADA -CAN\CGA-B149.1 or .2 Fuel Burning Installation Code
Please refer to appliance manufacturers' instructions to determine proper sizing and connection of venting system to appliance,
including maximum horizontal length, maximum height, and installation clearances (air spaces). The proper operation of the vent
system and appliance requires parts specified by Z-FLEX with no deletions or substitutions.
Z-FLEX recommends that an experienced professional who works with venting systems on a regular basis perform the
installation. These instructions are intended as a guide to assist a professional installer.
When the Z-VENT system is installed, the following should be observed:
1. A venting system that exits the structure through a sidewall or the like, shall terminate not less than 12 inches (254 mm) above
the ground (see illustration # 2, page 4).
2. The termination of a system shall be located above the snow line in geographical areas where snow accumulates. The
termination area should be kept clear of snow and ice at all times.
3. The vent shall not terminate less than 7 ft. (2.13 m) above a paved sidewalk or driveway.
4. The termination shall be 6 ft. (1.8 m) or more from the combustion air intake of any appliance.
5. The system shall terminate more than 3 ft. (.91 m) from any other building opening, gas utility meter, service regulator or the
like.
6. Exterior mounted venting systems should be enclosed below the roof line with a chase to limit condensation and protect
against mechanical failure.
NOTES:
A. The Z-FLEX SPECIAL STAINLESS VENT SYSTEM is for use only with appliances having a positive vent pressure of 8” of water
column or less.
B. Except for installation in one and two family dwellings, a venting system that extends through any zone above that on which
the connected appliance is located shall be provided with an enclosure having a fire resistance rating equal to or greater than that
of the floor or roof assemblies through which it passes
C. Do not place any type of insulation in any required air spaces surrounding the venting system.
D. A termination must be used on all installations to assure proper operation and to prevent debris from entering the venting
system.
E. Vertical runs must use firestops as lateral support at each ceiling level and at least one support collar at the base of the vertical
run. For vertical runs exceeding 16’ (4.88 m), a support collar is required at 16’ (4.88 m) intervals. Horizontal runs require a loose
fitting metal strap or similar support at each elbow.
Model SVEIV
PRODUCT NO. DESCRIPTION
2SVEPWC Model SVEIV Single Wall Pipe
2SVSPA Model SVEIV Single Wall Adj. Pipe
2SVST Model SVEIV Single Wall Tee
2SVEE Model SVEIV Single Wall Elbow 90
2SVSRCX Model SVEIV Single Wall Rain Cap W/ Wind Band
2SVSRC Model SVEIV Single Wall Rain Cap
2SVDP Model SVEIV Double Wall Pipe
2SVDA Model SVEIV Double Wall Adj. Pipe
2SVDE Model SVEIV Double Wall Elbow 90
2SVDT Model SVEIV Double Wall Tee
2SVDRC Model SVEIV Double Wall Rain Cap W/ Wind Band
2SVDRC Model SVEIV Double Wall Rain Cap
2SVSTCD Model SVEIV Tee Cap W/Drain
2SVSTC Model SVEIV End Cap
2SVSFSS Model SVEIV Single Wall Firestop/ Support
2SV_F Model SVEIV Tall Cone Flashing
2SV_LS Model SVEIV Support/Storm Collar
2SV_WS Model SVEIV Wall Support
2SV_GB Model SVEIV Guy Band