Heatfab Saf-T Liner 304 4716772 handleiding

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Handleiding

CLEARANCE FROM COMBUSTIBLES

Air space clearances between the masonry chimney exterior and

combustible materials should be checked to verify that the chimney is in

accordance with the following clearance specifications (Fig. 2). The

minimum air space clearance between masonry chimneys and combustible

materials shall be at least 1" for a UL Listed Installation.

DETERMINING THE LINER DIAMETER

The Saf-T Liner must be properly sized for your heating appliance. The

diameter of the Saf-T Liner for a single appliance shall not be less than the

diameter of the appliance flue collar or that specified in the appliance

manufacturer’s instructions. Measure the dimension of the chimney opening

at its smallest point (Fig.3). Take the smaller of the two measurements (A&B)

and deduct 2" to arrive at the maximum diameter of Saf-T Liner that may be

installed. Saf-T Liner may be installed in any chimney with an inside diameter

greater than 7"x7" and constructed of 4" thick nominal solid or cored, brick or

masonry. When using Saf-T Liner to vent a fireplace, the cross section

opening of the flue shall not be less than 1/10th of the face area of the fireplace

opening, to insure proper draft (Fig. 4). Custom rectangle or square Saf-T

Liner is available for flues which will not fit the required size round liner.

DETERMINING THE TOTAL LENGTH OF SAF-T LINER

Saf-T Liner is recommended for use in chimneys measuring in height from

8' to 80'.

Non-Fireplace Chimney

Measure the length of the chimney flue to determine the length of liner needed

by utilizing a tape measure. From this length subtract 14" for each tee

required. It is recommended that Saf-T Liner be installed with an accessible

clean-out tee that will facilitate easy cleaning and maintenance of the chimney

system. One tee will be required for the appliance, as well as a tee at the base

of the Saf-T Liner as a clean-out. Determine the distance between these two

tees and then the distance above the appliance tee to the top of the chimney.

The liner assembly will be supported by the tee take-offs and the clean-out tee resting on non-combustible

material.

Hearth/Fireplace Insert Stove

If installing a hearth or fireplace insert stove using an existing fireplace chimney, the length of rigid Saf-T Liner

required will be the distance from the chimney top to the top of the smoke chamber. Listed stainless steel

Chimney Liner components, an engineered Direct Connect Assembly or any other method approved by the local

building authority will be required to pass through the smoke chamber/damper area to the appliance flue collar.

The liner assembly will be supported from the top of the chimney. The installer must verify that there is at least

1 inch clearance to combustibles outside a 3" nominal layer of masonry as well as 1 inch clearance from the

masonry to the connector inside the smoke chamber area for the entire length within the smoke chamber area.

Fireplace

When lining an open fireplace, the total liner length will be the distance from the top of the smoke chamber to

the top of the chimney. This liner assembly will be supported from the top of the chimney. The liner may also

be extended to the damper area if the smoke chamber area is in poor condition. The installer must verify that

there is at least 1 inch clearance to combustibles outside a 3" nominal layer of masonry to insure safe operation

of the fireplace.

2 "

Minimum

1" minimum

Insulation

Combustible

framing

member or

wall

Fig. 3

Fig. 2

Area B

Area A

1/10 Area B

Fig. 4

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