Burnham SCG manual Pre-Installation Considerations, General Installation Requirements

1.Saf-T Vent SC is an advanced concentric vent system designed for zero clearance installation in residential applications. The inner wall is constructed from superferritic AL29-4C®stainless steel. The outer wall is also constructed from stainless steel, providing durability and a lasting finish.

2.As a Special Gas Vent system: Saf-T Vent is approved for use on ANSI Category I, II, III, and IV Gas-Burning Appliances and certain Direct Vent Appliances. Saf-T Vent SC is appropriate for use on appliances that specify an AL29-4C venting system.

3.As a Sealed Combustion system: The unique concentric design of Saf-T Vent SC also allows it to function as a pipe-in-a-pipe vent. Products of combustion are exhausted out through the inner wall while combustion air is drawn in through the outer wall. An appliance can be direct-vented with only a single penetration through the building structure.

This application must be approved by the Appliance Manufacturer.

Note: Saf-T Vent SC includes an integral seal and does not require RTV sealant. However, sealant may be necessary when connecting Saf-T Vent SC components directly to certain appliance flue collars and to the gasket-less Saf-T Vent GC and Saf-T Vent CI vent systems.

For applications up to 550°F/288°C, approved sealants include GE RTV 106 and Dow Corning 736.

For applications up to 300°F/149°C, approved sealants include GE RTV 106 and Dow Corning 732.

4.Pre-Installation Considerations:

•Proper planning prior to installation is essential as to avoid possible contact with concealed plumbing or electrical wiring inside walls, floors or ceilings as well as maintaining proper clearances. Be sure to plan a sufficient number of supports for the entire system that will maintain the required straight-line pitch and hold

Clearances to Combustibles:

the system in place. A continuous straight-line pitch of at least ¼” (2°) to the foot on horizontal runs must be maintained in order to properly rid the system of the corrosive condensate.

5.General Installation Requirements:

•Saf-T Vent SC vent sections, or other Saf-T Vent products, must be used throughout the entire length of the system. Alternatives such as galvanized pipe, PVC, nonmetallic pipe, prefabricated chimney, field-fabricated vents or Type B vent sections must not be used. Do not mix pipes, fittings, or joining methods from different manufacturers.

•More than one appliance may not be interconnected to any part of the venting system.

•Any penetrations of ceilings, floors or walls must be properly fire-stopped.

•Whenever gas-burning equipment is installed in the same space where halogenated substances may exist (refrigerants, solvents, bleaches, salts, etc.), clean outside air must be utilized for combustion.

•The vent system shall not be routed into, through or within any other actively used vent or chimney.

•Seal weather exposed joints of the outer jacket with foil tape or an exterior grade silicone sealant.

•Combustible Material is any 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, or plastered. (Source: NPFPA54/ANSI Z223.1-1999.)

•Non-Combustible Material is any material that is not capable of being ignited and burned, such material consisting entirely of, or a combination of, steel, iron, brick, tile, concrete, slate, asbestos, glass and plaster. (Source: NPFPA54/ ANSI Z223.1-1999.)

	Clearance to	Maximum Flue
Diameter	Combustible		Orientation	Enclosure
		Gas Temp. (°F)
	Material
		550	Vertical,
	0"		No Offsets
				Fully enclosed by combustible
		330
				material on all sides
			Horizontal,
3" - 4"	1"	400
			Vertical with
	0"	400		Unenclosed, at least 1 side open,
			Offsets
				combustible material on a
	1"	550
				maximum of 3 sides
	0"	550	Any	Noncombustible material

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