Monessen Hearth LX32DV, LX36DV VENTING INSTALLATION Rear Wall Vent installation, 51D0528

VENTING INSTALLATION

Rear Wall Vent installation

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

•45° elbows may only be attached to rear when used to direct the flue skyward (to achieve additional rise). Do not attach 45° elbows to rear of appliance in which the flue turns either left or right and terminates horizontal.

•The maximum horizontal distance between the rear of the appliance and the outside face of the outside termination is 20" (508 m). Figure 15

LX Series Direct Vent Gas Fireplace

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 16

20"(508 mm)

Maximum

Figure 14 -	DVR584
Rear Vent Application,
Maximum Horizontal Distance

1.Locate and cut the vent opening in the wall. For com- bustible walls first frame in opening. Figure 15

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

Figure 16 -

Rigid Vent Pipe Connections

Female

Locking Lugs

Male Slots

FP1953

Combustible Walls: Cut a 11Z\x"H x 9Z\x" W (292 x 24

mm)hole through the exterior wall and frame as shown. Figure 15

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

Vent Opening for Combustible Walls

3. Attach vent pipe assembly to the fireplace. Set fireplace

in front of its permanent location to insure minimum

clearances. Mark the wall for a 11Z\x"H x 9Z\x"W (292 x 24

mm) rectangle hole (for noncombustible material such

as masonry block or concrete, a 7Z\x" [190 mm] diameter

hole is acceptable). Figure 15. The center of the hole

should line up with the center line of the horizontal rigid

9Z\x"

(241 mm)

11Z\x"

(292 mm)

Fireplace Hearth

Framing Detail

vent pipe end. Be sure to allow for minimum rise. Cut

a 11Z\x" x 9Z\x" (292 X 241 mm) rectangle hole through

combustible exterior wall (7Z\x" [190 mm] diameter hole

if noncombustible). Frame as necessary. Allow 1/4"

minimum rise per foot. Figure 15

4. Apply a bead of non-hardening mastic around the

outside edge of vent cap. Position the vent cap in the

center of hole on the exterior wall with the word “UP”

on the vent cap facing up. Insure proper clearance of

1" to combustibles is maintained. Attach the vent cap

with four wood screws supplied. Figure 17

Vent Opening for Noncombustible Wall

NOTE: Replace the wood screws with appropriate fasteners for stucco, brick, concrete, or other types of siding.

7Z\x"

(190 mm)

Figure 15 -Fireplace Hearth

Locate Vent Opening on Wall

VO584-100

WARNING	Do not recess vent termination into any
	wall. This will cause a fire hazard.

51D0528 17