Flex Vent

The flex vent must be supported with the spacing between support intervals not exceeding 4 feet, with no more than ½ inch sag between supports.

A support is required at each change in venting direction, and in any location where it is necessary to maintain the necessary clearance to combustibles. A simple “up and out” installation (Figure 9) requires only enough support to main- tain the necessary clearance to combustibles. However, the vent attachment point and the firestop location are consid- ered to be supports.

STRAIGHT UP

VERTICAL VENTING

V (FT.)

45' MAX. (13.7m)

NOTE: For vertical venting over 20 feet a restrictor plate is recommended for improved

3” CLEARANCE

FLEX-VENT

TERMINATION

CAP

1”

CLEARANCE

flame appearance.

Use SL D-Series components only.

Figure 9.

STRAIGHT OUT HORIZONTAL VENTING

H

Max. Run

36" (914 mm)

Note: Use two 90o elbows for corner installations.

Use D-Series components only.

Figure 10. Straight up Vertical Venting

90-DEGREE ELBOWS

H

Note: There MUST be a 25% reduction in total H when using flex vent, except when using the simple up and out installation (see Figure 9).

Figure 11. Straight Out Horizontal Venting

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Quadra-Fire QV36-A, QV32-A Straight UP Vertical Venting, Use SL D-Series components only, Use D-Series components only