Monessen Hearth HDV500NV/PV manual HDV Series Direct Vent Gas Fireplace, Flex Venting Installation

HDV Series Direct Vent Gas Fireplace FLEX VENTING INSTALLATION

Flashing

Rigid Pipe Length

Flex to Pipe Adapter

Firestop

1222DA 5" x 8" to 4" x 6B\," Reducer

Termination

Cap

Storm Collar

Roof Sup- port

UL1777 Flex PIpe

DVFA/8

Adapter

FP1974

	Rigid Pipe Length
Screws
(3 Places	Flex to Pipe Adapter
equidistant
just above
gear clamp)	Gear Clamp
	1C\v" Flexible Pipe and
	Adapter Outer Collar Over-
	lap
Gear Clamp	UL1777 Flex Vent

Figure 39 -

Typical Pipe Connection

MHSC Horizontal Vent Termination

Screws (3 Places equidistant

just above gear clamp)

UL1777 Flex Vent

	1C\v" Flexible Pipe
Gear Clamp	and Collar Overlap

Figure 38 -

Typical Vertical Flex Vent Installation

Figure 40 -

Typical Horizontal Flex Vent Installation

2.Install firestop spacers, Figure 38, when penetrat- ing ceiling, attic spaces, or walls.

3.Do not allow the flexible vent to bend in radius tighter than 5" (127 mm). Figure 37

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 inter- vals prescribed by the flexible vent manufacturer; 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 and/or rigid pipe section(s) is required to connect the flexible vent assembly to the verti- cal termination by using three self-penetrating screws.

2.Review Figure 39 and corresponding instruc- tions 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 38.

E.Installing flexible venting to horizontal termination assemblies.

1.Connect the 5" flexible vent to the horizontal termination as in Figure 40.

2.Connect the 8" flexible vent to the termination ring as in Figure 40.

3.Review Figure 40 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 40.

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