Lennox International Inc. 1003C - Manual (Page 12)

INSTALLATION
See Pipe Manufacturers Instructions For Installation Requirements Of Venting Components And Vent Clearances.
PAGE 12
RESIDENTIAL STANDARD
Using 6” (152 mm) Diameter Single Wall
Connector Pipe. Not Approved For
Manufactured (Mobile) Homes.
MANUFACTURED (MOBILE) HOME STANDARD
Using 6” (152 mm) Diameter Type L-Vent Connector Pipe
IMPORTANT NOTES:
• Minimize the use of elbows (30°, 45° or 90°) - Offsets in the
venting system are very restrictive and will inhibit the draft
(i.e. You will lose approximately 5 feet of effective draft for
every 90 degrees of direction change). This appliance re-
quires 12 to 15 feet of effective draft for optimum perform-
ance (see Draft Requirements on page 11).
• First section of pipe must be vertical - Use as much straight
vertical pipe directly above the appliance as possible be-
fore using an elbow (a 2’ to 3’ initial vertical rise is sug-
gested).
Chimney
Termination Cap
Storm
Collar
Roof
Flashing
Ceiling Support
Assembly
Slip Adapter
Chimney
Connector
6” x 24”
24-Gage
Single Wall Pipe 5 ¼” (134 mm)
Floor
Protection
Square, Outside
Air Floor Duct
7 ft. (214 cm)
Minimum
DVL Close
Clearance
Connector
Support Box
Minimum 12-
15 ft. (366-
458 cm) of
Flue to
Achieve a
Stable Draft
14.5”
(369 mm)
3 ft. (915 mm)
Minimum
Spark Arrestor Cap
Storm Collar
Flashing