Vermont Casting DVBR42 - Manual (Page 17)

17
DVBR Series Direct Vent Gas Fireplace
20000584
Vertical Sidewall Installation
Twist Lock Pipe
Step 1
Locate vent opening on the wall. It may be necessary
to first position the fireplace and measure to obtain hole
location. Depending on whether the wall is combustible
or noncombustible, cut opening to size. (Fig. 31) (For
combustible walls first frame in opening.)
NOTE: When using flex vent, the opening will have to
be measured according to the 1” (25 mm) rise in 24”
(610 mm) vent run.
Combustible Walls: Cut a 9³⁄₈”H x 9³⁄₈”W (238mm x
238mm) hole through the exterior wall and frame as
shown. (Fig. 31)
Noncombustible Walls: Hole opening must be 7¹⁄₂”
(191 mm) in diameter.
Step 2
Measure wall thickness and cut zero clearance sleeve
parts to proper length (MAXIMUM 12” / 305mm). As-
semble sleeve and attach to firestop with #8 sheet
metal screws (supplied). Install firestop assembly. (Fig.
29)
Zero clearance sleeve is only required for
combustible walls.
VO584-100
Vent Opening
2/99 djt
Vent Opening Combustible Wall
9³⁄₈”
(240mm)
9³⁄₈”
(240mm)
Fireplace Hearth
Framing Detail
Vent Opening Non-
combustible Wall
7¹⁄₂” Dia.
(190mm)
Fireplace Hearth VO584-100
Fig. 31 Locate vent opening on wall.
Step 3
Place fireplace into position. Measure the vertical height
(X) required from the base of the flue collars to the cen-
ter of the wall opening. (Fig. 33)
Step 4
Apply a band of silicone to the inner and outer flue
collars of the fireplace and using appropriate length of
pipe section(s) attach to fireplace with three (3) screws.
Follow with the installation of the inner and outer elbow,
again secure joints as described in the “Connecting
Vent Pipe” section.
CFM135
Zero Clearance Sleeve
2/26/01 sta
#8 Screws
(2)
Adjustable Zero
Clearance Sleeve
Firestop
#8 Screws (2)
#8 Screws (2)
Max. Length
12” (294 mm)
Fig. 32 Adjustable zero clearance sleeve.
CFM135a
X X
FP1181
Fig. 33 Vertical height requirements.
Step 5
Measure the horizontal length requirement including a
2” (50mm) overlap, i.e. from the elbow to the outside
wall face plus 2” (50mm) (or the distance required if
installing a second 90° elbow). (Fig. 34)
Always install horizontal venting on a level
plane.
Step 6
Use appropriate length of pipe sections - telescopic or
fixed - and install. The sections which go through the
wall are packaged with the starter kit, and can be cut to
suit if necessary.