Twist Lock Pipes; How To Use The Vent Graph - Vermont Castings BLDV300N SC7SB Installation And Operating Instructions Manual

BLDV7 Series Gas Fireplace

TWIST LOCK PIPES

When using twist lock pipe it is not necessary to use
sealant on the joints.
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 exter-
nal flange on the male end. It is recommended that you
secure the joints with three (3) sheet metal screws, how-
ever, this is not mandatory with twist lock pipe. Figure 9
NOTE: Sealant is not required to assemble fireplace
venting. Do not use silicone sealant at the inner flue
exhaust connections.
To make it easier to assembly the joints, we suggest put-
ting a lubricant (Vaseline or similar) on the male end of the
twist lock pipe prior to assembly.
Male End
Screw Holes
Figure 9 -
Twist-lock Pipe Joints

HOW TO USE THE VENT GRAPH

TWL100
The Vent Graph should be read in conjunction with the
Twist Lock Pipe
3/12/99 djt
following vent installation instructions to determine the re-
lationship between 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 di-
mension on the Sidewall Vent Graph, Figure 10, locate
the point intersecting with the 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 fire-
place in accordance with same.
EXAMPLE A:
If the vertical dimension from the floor of the unit is 11' (3.4
m) the horizontal run to the face of the outer wall must not
exceed 14' (4.3 m).
EXAMPLE B:
If the vertical dimension from the floor of the unit is 7' (2.1
m), the horizontal run to the face of the outer wall must not
exceed 7' (2.1 m).
Refer to Page 18 for requirements for snorkels.
14
Female End
TWL100
57" from
floor to
center
VENTING INSTALLATION INFORMATION
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
eg: B
4
2
2 4 6 8 10 12 14 16 18 20
Horizontal dimension from the finished outside wall
to the center of the pipe on the fireplace
Figure 10 -
Rear Wall Venting Graph
FP2337
sidewall vent graph
eg: A
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