Monessen Hearth HBDV300, HBDV400 manual Typical pipe connection

FLEX VENT INSTALLATION

3.Do not allow the flexible vent to bend in radius tighter than 5" (127mm). Refer to Figure 2.

4.Horizontal runs of flexible vent shall be supported at maximum 2 foot intervals; vertical runs, five feet intervals. Metal strapping, properly secured, is an acceptable means to support the flexible vent.

5.Flexible vent spacers are to be installed at intervals prescribed by the flexible vent manufacture; and in such a way as to maintain concentric inner and outer vent spacing.

D.Attaching flexible venting to vertical termination assemblies.

1.When using Simpson pipe, a MHS flex-to-pipe adaptor and/or rigid pipe section(s) is required to connect the flexible vent assembly to the vertical termination by using three self penetrating screws.

2.Review Figure 4 and corresponding instructions for proper overlap, clamp and screw placement.

3.Three each self penetrating screws are drilled opposite one another and below the gear clamp.

4.Use only listed and approved terminations and accessories, installed per the installation instructions and Figure 3.

E.Installing flexible venting to horizontal termination assemblies.

1.Connect the 4" flexible vent to the horizontal termination as in Figure 5.

2.Slide termination cap adapter ring over the termination cap’s outside pipe and secure with three screws.

3.Connect the 7" flexible vent to the termination adapter ring as in Figure 5.

4.Review Figure 5 for proper overlap and clamp placement

5.Three each self penetrating screws are drilled opposite one another and below the gear clamp.

6.Use only listed and approved terminations and accessories, installed per the termination instructions and Figure 5.

	Termination			Rigid pipe
				length
	cap
				Flex to pipe
Flashing
	Storm collar	Securing		adapter
		screws		(FPA/8)
		(3 places	Gear	1¾ in. flexible pipe
Rigid pipe	Roof support	equidistant	clamp	and adapter outer
		just above		collar overlap
length		gear clamp)
Flex to pipe				Gear clamp
adapter
				UL1777
(FPA/8)
				Flex vent

		Figure 4 — Typical pipe connection
UL1777 flex pipe			Monessen horizontal
Fire stop			vent termination
DVFA/8 Adapter		Termination to flex
	Securing screws	adapter (FTA7/8)
	(three places
	equidistant, just
	above gear clamp)
	UL1777	Gear	1¾ in. flexible pipe
	Flex vent		and termination outer
		clamps	collar overlap
Figure 3 —		Figure 5 —
Typical vertical flex vent installation	Typical horizontal flex vent installation

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