Installation Instructions

All joints in Selkirk gas vents must be secured using the appropriate method.
(“Snap Lock”) feature for sizes 3”- 8” (Fig. 1) and sheet metal screws for
sizes 10”-48” (Fig. 2). To use the Snap Lock feature, orient sections as
shown in Fig. 1 and force adjacent pieces together until “SNAP” is heard,
indicating full/proper joint engagement.
To secure Model QC joints, orient as shown in Fig. 2. Push together until
slots in the inlet end overlap the holes in the outlet end. Insert 6 (max. 1/2”
long) screws, evenly spaced around perimeter.
NOTE: Some local jurisdictions require a supplemental screw(s) at joints to
prevent disengagement of the joint. Although not required under the terms
of the UL Listing because of the integral couplers, screws are permitted to
be installed at the joints in 3” through 8” vent. In such case, the screws
should be located approximately. 1/4” from overlapped edge and must be
maximum 1/4” in length so they do not pierce or deform the inner liner.
A new Lock-Tab® feature provides the equivalent of using a screw for this
purpose since, once engaged (with finger or thumb until it bends into the
groove in the top/ outlet end of the adjacent piece), it prevents the pipes
from being disengaged unless the tab is pried back out and dimples aligned.
2. TYPES OF APPLIANCES AND BUILDINGS
Type B Gas Vents are for venting of listed (L.P. or natural) gas-burning
appliances equipped with draft hoods and other Listed gas appliances
specified for use with Type B gas vents. These appliances include (but are
not limited to) the following types: furnaces, boilers, water heaters, room
heaters, unit heaters, duct furnaces, floor furnaces, and decorative appli-
ances.
DO NOT USE Type B Gas Vent for wall furnaces “Listed” for use with Type
BW Gas Vents only, incinerators and appliances Listed for use with chim-
neys only, combination gas-oil burning appliances, and appliances which
may be converted readily to the use of solid or liquid fuels. DO NOT USE
Type B Gas Vent for Category II, III, or IV appliances, or for any gas-burning
appliance which requires either a pressure-tight or liquid-tight venting sys-
tem.
All sizes of Selkirk Type B Gas Vent may be used in single and multistory
buildings. All Type B Gas Vents may be used for both individual and multiple
appliance venting. Selkirk Type B Gas Vents are to be installed and used in
accordance with the “National Fuel Gas Code”, NFPA 54, the “Standard for
Chimneys, Fireplace and Venting Systems”, NFPA 221, the “International
Fuel Gas Code” and/or applicable local/regional codes. Selkirk Type B Gas
Vent is also suitable for use in existing, otherwise unused and new
P
U
FIG. 2 10" - 48" QC
UP
FIG. 1 3" - 8" RV
sq. in. = Total Input
sq. in. = Total Input
sq. in. = Total Input
sq. in. = Total Input
sq. in. = Total Input
Draft Ho od
(NAT)
APPLIANCE TYPES IN ROOM
BASED ON TOTAL INPUT*
REQUIRED FREE AREA FOR EACH OPENING OR DUCT, SQUARE INCHES
Out To Attic
Air Supply
e. All Air From
Crawl Space
D. All Air From
Ventilated Attic
C. All Air From
Outdoors Through
Ducts
Wall Openings
B. All Air From
Outdoors Through
A. All Air From
Inside Building
Method
4000 4000 8000
Fan-AssistedCombination
Total Input
4000
Total Input
2000
Total Input
4000
Total Input
Total Input
1000
(FAN + NAT)
4000
2000
4000
1000
Total Input
Total Input
8000
4000
Total Input
8000
Total Input
2000
Total Input
(Fan Only)
* Total input - Total of all appliance nameplate input ratings.
LENGTH
TYPE B VENT
TYPE B VENT
DRAFT HOOD
CONNECTOR
45/60° ELBOW
INCREASER
45/60° ELBOW
INCREASER
90° ELBOW
ADJUSTABLE
TEE
Selkirk gas vent parts LISTED and produced under the
Factory Inspection and Follow-up program of Underwriters’
Laboratories, Inc. carry the LISTING MARK illustrated here.
CAUTION: WEAR GLOVES WHILE HANDLING METAL PARTS TO AVOID PERSONAL
INJURY. SHARP EDGES OR PROJECTIONS CAN CUT YOU.
1. GAS VENT DESIGNATIONS/JOINT METHOD
These instructions describe installation of the following sizes of Selkirk,
Type B Gas Vent Pipe and associated parts.
Minimum Airspace
Model Size Means of Joining Clearance
RV 3 - 8” Integral Snap Lock Coupler 1”
QC 10 - 24” 6 sheet metal screws/joint 1”
QC 26 - 48” 6 sheet metal screws/joint 2”
Round Type B
Gas Vent
INSTALLATION INSTRUCTIONS
masonry chimneys to protect the chimney from damaging effects of moist
combustion products from the appliances listed above. NEVER USE Selkirk
Type B Gas Vent on any appliance that is not listed and approved for
venting with Type B gas vent.
A NOTICE SHOULD BE POSTED near the point where the Gas Vent is con-
nected to the appliance, with the following wording: “Connect this Gas
Vent only to gas burning appliances, as indicated in the installation instruc-
tions. Do not connect to incinerators, or liquid or solid fuel burning appli-
ances”.
3. AIR SUPPLY
Gas appliances must have an adequate air supply for combustion, vent
operation, and ventilation. (See Table below) Special provisions for bring-
ing in outside air may be necessary in tight buildings or when appliances
are in small rooms. Consult local building codes, or NFPA 54, “National Fuel
Gas Code” for air supply requirements.
4. VENT CONNECTOR TYPE AND SIZE
Selkirk Gas Vent pipe meets all building code and safety standards for use
as gas appliance vent connectors. (See Fig. 3). Correct selection of con-
nector and vent size is detailed in the Selkirk Gas Vent and Chimney Sizing
Handbook, the “National Fuel Gas Code” (NFPA 54), and local/regional codes.
Draft hood connectors must be attached to the appliance outlet with screws.
Single wall connectors, if used must be secured to the appliance, to the
gas vent, and at all joints with 3 sheet metal screws per joint. Attachment of
vent to non-metallic outlets should be per appliance manufacturer recom-
mendations.
®
Failure to follow the installation instructions could cause
FIRE, CARBON MONOXIDE POISONING, OR DEATH. If you
are unsure of installation requirements, call the telephone
number listed on these instructions, or visit our website
www.selkirkcorp.com.
WARNING