Top vent Sidewall Application

Monessen Hearth HBDV400N/PSC7, HBDV300N/PV7 manual Rear Wall Vent Installations Flex Vent Pipe

Figure 22 -

Top Vent Vertical Sidewall Restrictor

VENT INSTALLATION

HBDV7 Series Direct Vent Gas Fireplace

Finish Wall

	Vent
	Termination
Figure 19 -	FP2294
Side View of Final Unit Location

Rear Wall Vent Installations - Flex Vent Pipe

Follow Steps 1 and 2 on Page 16.

Step 3

Install the 4” (102 mm) flex vent pipe to the appliance col- lars described in “General Information Assembling Vent Pipes”, Page 13. If the installation requires a 45° angle, grasp the vent pipe close to the appliance collar and bend to 45°. DO NOT exceed 45°. Figure 20

Install the 7” vent pipe in the same manner as Step 2. NOTE: There must be a 1/2” (13 mm) rise in a 12” (305

mm)length of flex vent.

Step 4

Assemble the flex vent to the collars on the termination as you did on the appliance.

Termination

Flex Section

Appliance Collars

FP1473

Figure 20 -

Grasp the vent pipe close to the collar and bend to 45° angle. do not exceed 45°.

Rise

FP1472

Figure 21 -

There must be a 1/2" rise per foot length

NOTE: For all top vent installations where a 90° elbow is the first pipe piece towards a sidewall termination (up and out), an open-center ringed flue restrictor, part #69D3006 must be installed onto the top edge of the firebox flue adapter. To create this open-center restrictor, twist and break off the center rib of the supplied flue restrictor. The installed part should appear similar to that show n in Fig- ure 22.

Since it is very important that the venting system maintain its balance be- tween the combustion air intake and the flue gas

exhaust,	certain
limitations	as to	FP2303

vent configurations apply and must be strictly adhered to.

The Vent Graph, showing the relationship between verti- cal and horizontal side wall venting, will help to determine the various dimensions allowable.

Minimum clearance between vent pipes and combus- tible materials is 3" (76 mm) on top, and 1" (25 mm) on the bottom and sides unless otherwise noted.

When vent termination exits through foundations less than 20” (508 mm) below siding outcrop, the vent pipe must flush up with the siding.

It is best to locate the fireplace in such a way that mini- mizes the number of offsets and horizontal vent length.

The horizontal vent run refers to the total length of vent pipe from the flue collar of the fireplace (or the top of the Transition Elbow) to the face of the outer wall.

Horizontal plane means no vertical rise exists on this por- tion of the vent assembly.

54D8000