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13

DVR584-600

Rear vent no elbows

2/99   djt

20" 

(508mm)

Straight Venting

FP836

Rear Vent-Top View

11/21/98

20"

(508mm)

Max.

20"

(508mm)

Max.

Rear Vent Corner Installation

Fig. 14  Rear vent applications, one 45° elbow.

45°

45°

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. 15): Cut a 10³⁄₈”H x 9³⁄₈” W 

(264 x 240mm) hole through the exterior wall and frame 

as shown. 
Noncombustible Walls (Fig. 15): Hole opening must 

be 7¹⁄₂” (190mm) in diameter. 
STEP 2
Measure wall thickness and cut zero clearance sleeve 

parts to proper length (MAXIMUM 12”/305mm). Assem-

ble sleeve and attach to firestop with #8 sheet metal 

screws (supplied). (Fig. 16)

VO584-100

Vent Opening

2/99   djt

9³⁄₈”

(240mm)

10³⁄₈”

(264mm)

Fireplace Hearth

Framing 

Detail

7¹⁄₂”

(190mm)

VO584-100

Fig. 15  Locate vent opening on wall.

ZCS101 

Zero Clearance Sleeve

3/11/99   djt

Max. Length 

12” (305mm)

#8 Screws (2)

#8 Screws 

(2)

#8 

Screws 

(2)

Adjustable Zero Clearance Sleeve

ZCS101

Fig. 16  Adjustable zero clearance sleeve.

Firestop

STEP 3
Measure from the fireplace collar or elbow face to face 

of outside wall (add 2” for vent pipe overlap). Mark 

pipes and cut to length. It is very important that the two 

pipes are flush with the outside wall once the fireplace 

is in its final location. (Fig. 17)
STEP 4
Slip 4” and 7” pipes onto respective flue collars. Make 

sure to fix to the fireplace collar the 4” pipe with three 

(3) screws before fixing the 7” pipe on the 7” collar. 

Both pipes must be on a level plane. (Fig 18)
STEP 5
Guide the vent termination 4” collar into the 4” pipe then 

the 7” collar into the 7” pipe. Do not force the venting 

into position. If the pipes do not line up with the termi-

nation collars, disassemble pipes and reattach to the 

fireplace collar. (Fig. 18)
STEP 6
Secure fireplace to floor through floor holes and adjust-

able frame drywall strip (nailing flange) to frame. (Refer 

to Framing & Finishing Section).