Monessen Hearth WDV500 manual WDV Series Gas Fireplace, Flex Vent Installation, 78D0011

WDV Series Gas Fireplace FLEX VENT INSTALLATION

2.Install firestop spacers, Figure 26, when penetrating ceiling, attic spaces, or walls.

3.Do not allow the flexible vent to bend in radius tighter than 5" (127 mm). Figure 25

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 manufac- turer; 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, an MHSC flex-to-pipe adapter (FPA) 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 27 and corresponding instructions for proper overlap, clamp and screw place- ment.

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 instruc- tions and Figure 26.

E. Installing flexible venting to horizontal termination assemblies.

1.Connect the 5" flexible vent to the horizontal termination as in Figure 28.

2.Connect the 8" flexible vent to the termination ring as in Figure 28.

3.Review Figure 28 for proper overlap and clamp placement.

4.Three each self-penetrating screws are drilled opposite one another and below the gear lamp.

5.Use only listed an approved terminations and accessories, installed per the termination instruc- tions and Figure 28.

			Rigid Pipe Length
	Termination	Screws
	Cap
Flashing	Storm Collar	(3 Places	Flex to Pipe Adapter
		equidistant
	Roof Support	just above	(FPA/8)
		gear clamp)
Rigid Pipe
			Gear Clamp
Length
Flex to Pipe			1C\v" Flexible Pipe and Adapter
			Outer Collar Overlap
Adapter
(FPA/8)
		Gear Clamp	UL1777 Flex Vent
		Figure 27 -
Firestop		Typical Pipe Connection
	UL1777 Flex
			MHSC Horizontal
	PIpe
			Vent Termination
		Screws
	DVF8A/8	(3 Places equidistant just
	Adapter	above gear clamp)

	UL1777 Flex Vent
	1C\v" Flexible Pipe and
FP1974	Collar Overlap
	Gear Clamp

Figure 26 -

Typical Vertical Flex Vent InstallationFigure 28 -

Typical Horizontal Flex Vent Installation

20 78D0011