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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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0 1
Where required, a telescopic vent section
(SV4.5LA) may be used to provide the installer
T
O
with an option in installing in tight and confined
T
A
2 /
spaces or where the vent run made up of fixed
L
length pieces develops a joint in a undesirable
Q
location, or will not build up to the required
T
Y
length. The SV4.5LA Telescopic Vent Section
4
has an effective length of from 1-1/2" (38 mm)
4
to 7-1/2" (191 mm).
5
The SV4.5LA is fitted with a locking inclined
5
channel end (identical to a normal vent sec-
5
tion component) and a plain end with 3 pilot
6
holes. Slip the plain end over the locking
6
channel end of a standard SV4.5 vent com-
4
ponent the required distance and secure with
three #8 x 3/8" screws.
5
5
Maintain a minimum 1" (25 mm) clearance
7
to combustible materials for all vertical
6
vent elements.
7
7
Clearances for horizontal vent elements are
7
1" (25 mm) at the sides and 1" (25 mm) on
5
the bottom. Clearances above horizontal
6
vent elements are 3" (76 mm) for all models
and all applications. Exception: Clearance
7
is 5" (127 mm) for MPLDV35, MPLDV40 &
8
MPLDV45, when the center line of the hori-
8
zontal run is less than 48" (1219 mm) above
8
the fireplace top wrapper surface.
8
6
9
The starter elbow may not be used if a 45 degree
7
vent run is required directly off of the unit.
7
Refer to Detail - Figure 17 .
7
9
A. Attach Supplied 45 Degree Starter Elbow -
0 1
Slip the plain end with 3 mounting holes over
7
the locking channel end of the appliance collar
8
and secure with three screws.
8
B. Support The Elbows - Support the starter
0 1
elbow and the vertical portions of the venting
1 1
system with support bracket as shown in
8
Figure 23 - Detail A, on page 14. Do not use
9
the starter elbow anywhere else in the vent
1 1
system if not used on the appliance collar.
9
SV4.5 rigid and flex components can be used
0 1
directly off the collar. Do not return to rigid
0 1
sections after using flex sections in a vent run.
C. Frame ceiling opening - Use a plumb line
from the ceiling above the appliance to lo-
cate center of the vertical run. Cut and/or
frame an opening, 10-1/2" x 10-1/2" (267mm
x 267mm) inside dimensions, about this
center mark ( Figure 14 ).
11
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