Vermont Casting DVRTSB - Manual (Page 13)

13
Vermont Castings, Majestic Products DVRTSB
10003848
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 the 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 the external flange on the male end. It is
recommended that you secure the joints with three (3)
sheet metal screws, however this is not mandatory with
twist lock pipe.
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.
The vent chart should be read in conjunction with the
following vent installation instructions to determine the
relationship of the vertical and horizontal dimensions of
the vent system.
1. Determine the height of the center of the horizontal
vent pipe exiting through the outer wall. Using this
dimension on the Sidewall Vent Graph, (Fig. 15)
locate the point intersecting with slanted graph line.
2. From the point of this intersection, draw a vertical
line to the bottom of the graph.
3. Select the indicated dimension, and position the
fireplace in accordance with same.
Example A:
If the vertical dimension from the floor of the
fireplace is 11’ (3.4m) the horizontal run to the face
of the outer wall must not exceed 14’ (4.3m).
Example B:
If the vertical dimension from the floor of the unit is
7’ (2.14m), the horizontal run to the face of the outer
wall must not exceed 8
¹⁄₂
’ (2.6m).
How to Use the Vent Graph
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.
• Specific rear vent starter kits must be used in these
applications (see ‘Venting Components’). Theappli-
ance has been approved for installation flat against
a rear wall. (Fig. 16)
• The maximum horizontal distance between the rear
of the appliance and the outside face of the rear wall
is 20” (508mm). (Fig. 16)
• 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)
When the vent termination is installed in an accessible
location, a Screen Guard Kit, item #7V1B60, should be
installed. (Accessible means the termination is likely to
be touched)
Horizontal dimension from the outside face of the wall
to the center of the fireplace vent flange
Vertical dimension from the floor of the unit
To the center of the horizontal vent pipe
CFM102
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
eg: A
eg: B
Fig. 15 Sidewall vent graph showing the relationship be-
tween vertical and horizontal dimensions for a Direct Vent flue
system.