Specification Sheet

Saf-T Vent CI Plus
Clearances to Combustibles
For Category I,II,II,IV,
Gas Fired Appliances
And For Gas or Oil Fired Appliances
Listed For L-Vent Venting Systems
• The allowed clearances may differ by the appliance manufacturer. The appliance manufacturer’s
instructions and applicable local codes take precedence over this document.
• Combustible Material is defined as material made of or surfaced with wood, compressed paper,
plant fibers, or other materials that are capable of being ignited or burned. Such material shall
be considered combustible even though it is flame-proofed, fire-retardant treated, or plastered.
(Source: NFPA 54/ANSI Z223.1-1999)
• Noncombustible Material is defined as material that is not capable of being ignited and burned,
such material consisting entirely of, or of a combination of, steel, iron, brick, tile, concrete,
slate, glass, and plaster. (Source: NFPA 54/ANSI Z223.1-1999.)
www.heatfab.com [e-mail]
Pub # 11724-120208 413.863.2242 800.772.0739 fax [phone]
130 Industrial Boulevard Turners Falls MA 01376
DIAMETER
CLEARANCE TO
COMBUSTIBLE
MATERIAL
MAXIMUM FLUE
GAS TEMP. (°F) ORIENTATION ENCLOSURE
4” - 24" 1"
26" - 32" 2"
4" - 32" Not Allowed 550 Horizontal
Fully enclosed
by combustible
material on
all sides
4" - 8" 1"
9" - 12" 2"
14" 3"
16" - 20" 4"
22" - 24" 5"
26" - 32" 6"
4” - 32" 0” 550 Any
Noncombustible
material
Enclosed on a
maximum of 2
sides (ceiling &
si de w a l l )
Horizontal550
550 Vertical
Fully enclosed
by combustible
material on
all sides
Gas: Special Gas Vent
Oil: Type L-Vent
4”- 8" CI Plus 3" 570 Any Enclosed
4”- 32" CI Plus &
ICI Plus
3" 570 Any Un-Enclosed
4"- 24" ICI Plus 3" 570 Any Enclosed