Monessen Hearth CDV7 Rear Wall Vent Installations - Flex Vent Pipe, Top vent Sidewall Application

CDVSC7 & CDV7 Series Gas Fireplace Venting installation

Finish Wall

	Vent
	Termination
Figure 17 -	FP2294
Side View of Final Unit Location

Rear Wall Vent Installations - Flex Vent Pipe

Follow Steps 1 and 2 on Page 19.

Step 3

Install the 4” (102 mm) flex vent pipe to the appliance col- lars described in “General Information Assembling Vent Pipes”, Page 12. 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 18

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 18 -

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

20

Rise

FP1472

Figure 19 -

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

Top vent Sidewall Application

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 must be installed onto the top edge of the firebox flue adapter. To create this open-center re-

strictor, twist and break off the center rib of the supplied flue restrictor. The installed part should appear similar to that show n in Figure 20.

Since it is very im-

portant	that	the	FP2303
			Figure 20 -
venting	system		Top Vent Vertical Sidewall
maintain its balance			Restrictor
between	the	com-

bustion air intake and the flue gas exhaust, certain limitations as to 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.

When installing the appliance as a rear vent unit, the 90° or 45° Transition Elbow attached directly to the rear of the unit is NOT INCLUDED in the following cri- teria and calculations, and unless specifically men- tioned should be ignored when calculating venting

layouts.

69D3011