Monessen Hearth HBDV300 REAR WALL VENT INSTALLATION continued, Do not recess vent termination

VENT INSTALLATION

REAR WALL VENT INSTALLATION (continued)

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 “HOT” on the vent cap facing up. Insure proper clearance of 1" to combustibles is maintained to the flue. Attach the vent cap with four wood screws supplied. See Figure 18.

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

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

Vent Cap

HOT

Wood

Screw

Apply Mastic to

All Four Sides

Figure 18 - Installing Horizontal Termination

A vinyl siding standoff (part #950) must be used with the Simpson/Selkirk Horizontal Termination (part #985) on vinyl, stucco or wood-clad exterior walls. Apply non-hardening mastic around outside edge of the standoff instead of the vent cap assembly. See Figure 19.

5.Slide the firestop over the vent pipe before connecting the horizontal run to the vent cap. See Figure 20.

6.The termination should overlap the flue a minimum of 11/4" Apply silicone to the outer pipe/termination connection. Fasten termination with screws provided.

7.Slide the firestop against the interior wall surface and attach with screws. See Figure 20.

		Cut Vinyl Siding
		Away to Fit Standoff	Interior Wall
				Surface
		Standof #950
		Simpson		Firestop
		Termination
		#985	Vent Cap
			(Horizontal
Apply			Termination)
Mastic to		HOT
All Four	Nut	Bolt		Horizontal
Sides			Screw
		Wood Screw		Vent Pipe
Figure 19 - Installing Simpson/Selkirk Vinyl			Figure 20 - Installing Firestop on
Siding Standoff and Termination			Horizontal Vent Pipe

54D5031 19