Monessen Hearth CR, PF, CL)NVC/PVC manual Venting installation, Rear Wall Vent installation, 42D0200

Venting installation Designer Series Gas Fireplaces

Rear Wall Vent installation

When installed as a rear vent unit this appliance may be vented directly to a termination located on the rear wall behind the appliance

•The maximum horizontal distance between the rear of the appliance and the outside face of the rear wall is 20" (508 m). Figure 16

•Only one 45° elbow is allowed in these installations.

20"

(508 mm)

9Z\x"

(241 mm)

Top View Flat

Installation

11Z\x"

(292 mm)

Figure 16 -

Rear Vent Application, Maximum

Horizontal Distance

1.Locate and cut the vent opening in the wall. For combustible walls first frame in opening. Combustible Walls: Cut a 11Z\x"H x 9Z\x" W (292 x 241 mm) hole through the exterior wall and frame as shown. Figure 17

Noncombustible Walls: Hole opening should be 7Z\x" (190 mm) in diameter.

2.Rigid vent pipes and fittings have special twist-lock connections. Assemble the desired combination of pipe and elbows to the appliance adaptor with pipe seams oriented towards the wall or floor.

Twist-lock Procedure: The female ends of the pipes and fittings have three locking lugs (indentations). These lugs will slide straight into matching slots on the male end of adjacent pipes and fittings. Push the pipe sections together and twist one section clockwise approximately one-quarter turn until the sections are fully locked. Figure 18

3.Attach vent pipe assembly to the fireplace. Set fire- place in front of its permanent location to insure mini- mum clearances. Mark the wall for a 11Z\x"H x 9Z\x"W (292 x 241 mm) rectangle hole (for noncombustible material such as masonry block or concrete, a 7Z\x" [190 mm] diameter hole is acceptable). Figure 17. The center of the hole should line up with the center line of the horizontal rigid vent pipe end. Be sure to allow for minimum rise. Cut a 11Z\x"x9Z\x" rectangle hole through combustible exterior wall (7Z\x" diameter hole if noncombustible). Frame as necessary. Allow 1/4" minimum rise per foot. Figure 17

7Z\x"

(190 mm)

FP1954

Figure 17 -

Vent Opening Requirements

Female Locking

Lugs

Note: Horizontal runs of vent must be supported every three (3) feet (914 mm). Use wall straps for this purpose.

Male Slots

FP1953

Figure 18 -

Rigid Vent Pipe Connections

42D0200 17