General Information For Connecting Vent Pipes; How To Use The Vent Graph - Majestic 360DVS2 Installation Instructions & Homeowner's Manual

General Information for
Connecting Vent Pipes
Crimped End Pipes
Before joining elbows and pipes apply a bead of high-
temperature sealant to the crimped end of the elbow or
pipe. Join the pipes using a 2" (51 mm) overlap and
secure the joints with three sheet metal screws
(Fig. 15). Wipe off excess sealant.
Canadian Installations:
Venting system must be installed in accordance with
the current CSA-B149.1 installation code.
USA Installations:
The venting system must conform with local codes
and/or current National Fuel Gas Code ANSI Z223.1.
Only venting components manufactured by Vermont
Castings, Majestic Products can be used in Direct Vent
systems.
From crimped
end of pipe:
1'' (25 mm)
Sealant
Screw Holes
BEAD LOCATION
Fig. 15 Apply a bead of high-temperature sealant
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 sliding
joints of telescopic vent sections used in the system.
To join the twist lock pipes together, align the beads of
the male end with the grooves of the female end. While
bringing the pipes together, twist 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.
NOTE: For ease of assembly, use a lubricant
(Vaseline or similar substance) on male
end of twist lock pipe prior to assembly.
Male End
Screw Holes
Fig. 16 Twist lock pipe joints
10002547
Vermont Castings, Majestic Products, 360DVS Series
Crimped end
Female End
TWL 100

How to Use the Vent Graph

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 bellow,
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 vertical dimension from floor of the fireplace is
11 ft. (3.4 m), horizontal run to the face of outer wall
must not exceed 14 ft. (4.3 m).
Example B:
If vertical dimension from floor of the unit is
7 ft. (2.14 m), horizontal run to the face of outer
wall must not exceed 8
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3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Horizontal dimension from the outside face of the wall
to the center of the fireplace vent flange
Sidewall vent graph showing the relationship between vertical and
horizontal dimensions for a Direct Vent flue system.
Fig. 17 Sidewall vent graph
1
/ ft. (2.6 m).
2
eg: A
eg: B
CFM 102
15