- Vermont Castings Direct Vent Homeowner's Manual 33XDV, 36XDV, 39XDV

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XDV Direct Vent Gas Fireplace
DVR584-600
Rear vent no elbows
2/99 djt
20"
(508 mm)
Rear Vent Top View
DVR584-600
Fig. 21 Rear vent application, no elbows.
FP836
Rear Vent-Top View
11/21/98
20"
(508 mm)
Max.
RE A R V E N T- T O P V I E W
20"
(508 mm)
Max.
45° 45°
FP836
Fig. 22 Rear vent application, one 45° elbow.
Rear Wall Installation
Twist Lock Pipe
STEP 1
Locate vent opening on the wall. To locate hole center
consult with appropriate fireplace dimensions, Page 4.
Frame as shown below.
NOTE: When using flex vent, the opening will have to
be measured according to the 1/2” (13 mm) rise in 12”
(305 mm) vertical run.
Combustible Walls (Fig. 23): Cut a 10³⁄₈”H x 9³⁄₈” W
(264 x 240 mm) hole through the exterior wall and
frame as shown.
Noncombustible Walls
(Fig. 23): Hole opening must
be 7¹⁄₂” (190 mm) in diameter.
Zero clearance sleeve is only required for
combustible walls.
STEP 2
Measure wall thickness and cut zero clearance sleeve
parts to proper length (MAXIMUM 12”/305 mm). Assem-
ble sleeve and attach to firestop with #8 sheet metal
screws (supplied). (Fig. 24)
STEP 3
Measure the horizontal length requirement for the vent-
ing including a 2” (51 mm) overlap, i.e. from the elbow
to the outside wall face plus 2” (51 mm). (Fig. 22)
VO584-100
Vent Opening
2/99 djt
Vent Opening for Combustible Wall
9³⁄₈”
(240mm)
10³⁄₈”
(264mm)
Fireplace Hearth
Framing
Detail
Opening for Noncombustible Wall
7¹⁄₂”
(190 mm)
VO584-100
Fig. 23 Locate vent opening on wall.
ZCS101 
Zero Clearance Sleeve
3/11/99 djt
Max. Length
12” (305mm)
#8 Screws (2)
#8 Screws
(2)
Adjustable
Zero Clearance
Sleeve
#8
Screws
(2)
Adjustable Zero Clearance Sleeve
ZCS101
Fig. 24 Adjustable zero clearance sleeve.
Firestop
STEP 4
Install the 4” (102 mm) vent to the appliance collar and
secure with three (3) sheet metal screws. Install the 7”
(178 mm) vent pipe tot he appliance collar and secure
with three (3) sheet metal screws. It is not necessary
to seal this connection. If a 45° elbow is being used,
attach the elbow to the appliance in the same manner
then attach the venting to the elbow.
It is critical there is no downward slope
away from the appliance when connecting
the vent or elbow.
STEP 5
Guide the venting through the vent hole a you place the
appliance in its installed position. Guide the 4” (102 mm)
and 7” (178 mm) collar of the vent termination into the
outer ends of the venting. Do not force the termination. If
the vent pipes do not align with the termination, remove
and reali gn the venting at the appliance flue collars.
(Fig. 25) Attach the termination to the wall as outlined in
the instruction sheet supplied with the termination.