Vermont Casting DVR33 - Manual (Page 12)

12
Vermont Castings, Majestic Products: DVR33
10004920
Max. 20"
(508 mm)
Top view flat installation
Max. 20"
(508 mm)
Top view corner installation
FP1188
Fig. 15 Rear vent application, maximum horizontal distance.
Rear Wall Vent Installation
Step 1
Locate and cut the vent opening in the wall.
For combustible walls first frame in opening (Fig. 16).
Combustible Walls: Cut a 10 ³⁄₈ ”H x 9 ³⁄₈ ” W (265 mm
x 240 mm) hole through the exterior wall and frame as
shown.
Noncombustible Walls: Hole opening should be 7
¹⁄₂
”
(190 mm) in diameter.
Zero clearance sleeve is only required
for combustible walls.
Step 2
Measure wall thickness, and cut zero clearance sleeve
to proper length; i.e., max. 12” (304.8 mm). Assemble
sleeve to its maximum opening (10
3 ⁄
8 ” x 9 3 ⁄
8 ”) and
attach to firestop with #8 sheet metal screws
(supplied). Install firestop assembly (Fig. 17).
Step 3
Measure the horizontal length requirement for the
venting including a 2” (50 mm) overlap, i.e. from the
elbow to the outside wall face plus 2” (50 mm)
(Fig. 15).
Twist Lock Pipes
When using Vermont Castings, Majestic Products
twist-lock pipe it is not necessary to use sealant on the
joints. The only areas of the venting system that need
to be sealed with high temperature silicone sealant
are the collars on the fireplace and termination, and
the sliding joint of any telescopic vent section used in
the system.
To join twist lock pipes together, simply align the beads
of the male end with the grooves of the female end,
twisting the pipe until the flange on the female end
contacts external flange on the male end. It is recom-
mended that you secure the joints with three (3) sheet
metal screws, however this is not mandatory with twist
lock pipe (Fig. 14).
To make it easier to assemble the joints we suggest
putting a lubricant (Vaseline or similar) on the male
end of the twist lock pipe prior to assembly.
Male End Female End
Screw Holes
TWL100
Fig. 14 Twist-Lock pipe joints.
Rear Wall Vent Application
When installed as a rear vent unit this appliance may
be vented directly to a termination located on the rear
wall behind the appliance
• Only Vermont Castings, Majestic Products vent-
ing components are approved to be used in these
applications (See Venting Components listed for
different installation requirements).
• The maximum horizontal distance between the rear
of the appliance (or end of the transition elbow in a
corner application) and the outside face of the rear
wall is 20” (508 mm) (Fig. 15).
• Only one 45˚ elbow is allowed in these installations.
• The minimum clearances between any combustible
material and the vent pipe sections are:
Top 2” (50 mm)
Sides 1” (25 mm)
Bottom 1” (25 mm)