DVRTSB Bay Window Fireplace
Vent Opening for Combustible Wall
9³⁄₈”
(240 mm)
10³⁄₈”
(265 mm)
Framing Detail
Opening for Noncombustible Wall
7¹⁄₂”
(190 mm)
Fig. 17 Locate vent opening on wall.
Zero clearance sleeve is only required for combustible walls.
Adjustable Zero | Max. Length 12” |
Clearance Sleeve | (305mm) |
| #8 Screws (2) |
#8 Screws (2) |
|
| #8 Screws |
| (2) |
Firestop | |
Adjustable Zero Clearance Sleeve | ZCS101 |
Fig. 18 Adjustable zero clearance sleeve. |
|
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) (or the distance required if installing a second 90° elbow. (Fig. 17)
STEP 4
Install the 4” (102 mm) vent to the appliance collar and secure with three (3) sheetmetal screws. Install the 7” (175 mm) vent pipe to the appliance collar and secure with three (3) sheet metal screws. It is not necessary to seal this connection.
It is critical that there is no downward slope away from the appliance when con- necting the vent or elbow.
14
STEP 5
Guide the vent through the vent hole as you place the appliance in its installed position. Guide the 4” (102mm) and 7” (175 mm) collars 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 temination remove and realign the venting at the appliance flue collars. Attach the termination to the wall as outlined in the instruction sheet supplied with the termination.
Vertical Sidewall Applications
Since it is very important the venting system maintain its balance between the combustion air intake and the flue gas exhaust, certain limitations as to vent configu- rations apply and must be strictly adhered to.
The vent graph showing the relationship between verti- cal and horizontal side wall venting will help to deter- mine the various dimensions allowable.
Minimum clearance between vent pipes and combustible materials is one 1” (25mm) on top, bottom and sides unless otherwise noted.
When the vent termination exits through foundations less than 20” (508 mm) below siding outcrop, the vent pipe must flush up with the siding.
It is always best to locate the fireplace in such a way that minimizes the number of offsets and horizontal vent length of vent pipe from the flue collar of the fire- place to the face of the outer wall.
Horizontal plane means no vertical rise exists on this portion of the vent assembly.
When installing the appliance as a rear vent unit the 90° Transition Elbow attached directly to the rear of the unit is not in- cluded in the following criteria and calcula- tions, and unless specifically mentioned should be ignored when calculating vent- ing layouts.
| FP1380 |
Fig. 19 | Maximum number of 90· elbows per sidewall. |
| 10003848 |
