Monessen Hearth HDV500NV/PV manual Rear Wall Vent installation 5 x 8 Venting only

venting installation HDV Series Direct Vent Gas Fireplace

Rear Wall Vent installation (5" x 8" Venting only)

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 termination is 20" (508 mm). Figure 14

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

20"

Maximum

Figure 14 -

Rear Vent Application,

Maximum Horizontal Distance

DVR584

1.Rigid vent pipes and fittings have special twist-lock connections. Assemble the desired combination of pipe and elbows to the appliance adaptor.

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 15

2.Refer to venting and termination instructions for further instructions.

Female

Locking Lugs

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

Combustible Interior Walls: Cut a 12Z\x"H x 10Z\x" W hole through the interior wall.

Combustible Exterior Walls: Cut a 10Z\x"H x 10Z\x"W square hole through the exterior wall frame. Figure 16

Noncombustible Walls: Hole opening should be 8Z\x" (216 mm) in diameter.

4.The center of the hole should align with the center line of the horizontal rigid vent pipe end. Allow 1/4" minimum rise per foot. Figure 16

10Z\x"

(267 mm)

10Z\x"

(267 mm)

Framing

Combustible Wall

8Z\x"

(216 mm)

VO584-100

Noncombustible Wall

Figure 16 -

Exterior Wall Framing Dimensions

5. 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

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

Figure 15 -

Male Slots

FP1953

1" to combustibles is maintained. Attach the vent cap

with four wood screws supplied. Figure 17

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

For vinyl siding, stucco, or wood exterior use vinyl siding standoffs between vent cap and exterior wall for Simpson or Selkirk Terminations only. The vinyl siding standoff pre- vents excessive heat from melting the vinyl siding material. Note: MHSC Terminations do not require standoff. Bolt the vent cap to the standoff or wall. Apply non-hardening mastic around outside edge of the standoff instead of the vent cap assembly. Use wood screws provided to attach

Rigid Vent Pipe Connections

the standoff. Figure 18

56D3048 17