Pyromaster© H33BDVRRN/P
STEP 2
Measure wall thickness and cut adjustable zero clear- ance sleeve parts to proper length (MAXIMUM 12”/305 mm). (Fig. 22) Adjust sleeve to minimum (9³⁄₈” x 9³⁄₈”) and attach to firestop with #8 sheet metal screws (supplied). Assemble sleeve and attach to firestop with #8 sheet metal screws (supplied). Install firestop assembly.
Zero clearance sleeve is only required for combustible walls.
Adjustable Zero |
| Maximum Length | |
Clearance Sleeve |
| 12” (294mm) | |
|
| ||
|
| #8 Screws (2) | |
|
| Adjustable | |
#8 Screws |
| Zero | |
| Clearance | ||
(2) | #8 Screws | ||
Sleeve | |||
Wall Exterior |
|
| |
Wood |
| Firestop | |
Framing |
| ||
Zero Clearance | |||
Firestop | |||
Sleeve Flush with | |||
| |||
| Wall Exterior | ||
Vent Pipe |
|
| |
Drywall |
| CFM135 | |
|
|
Fig. 22 Zero clearance sleeve and firestop.
STEP 3
Apply a bead of high temperature sealant to the inner and outer flue collars of the fireplace and using appro- priate venting component(s) attach to fireplace with three (3) screws. (Fig. 23) Follow with the installation of the inner and outer elbow. Again secure joints with three (3) sheet metal screws. Wipe off any excess high temperature sealant.
STEP 4
Measure the horizontal length requirement including a 2” (50 mm) overlap, i.e. from the elbow to the outside wall finish plus 2” (or the distance required if installing a second 90° elbow. (Fig. 24)
Always install horizontal venting on a level plane.
X
CFM136
Fig. 24 Measure horizontal length requirement plus 2”.
STEP 5
Use appropriate length of pipe section - telescopic or fixed - and install the horizontal vent sections. The 20” (508 mm) section of pipe which goes through the wall is packaged with the 7DVSK starter kit, and can be cut to suit if necessary. (Fig. 25)
Sealing vent pipe and firestop gaps with high temperature sealant will restrict cold air being drawn in around fireplace.
Ensure
Pipes are
Concentric
X
7TDVRT90
Bead
of Sealant
(If necessary)
CFM143
High Temperature
Sealant
X
CFM137
Fig. 23 Apply bead of sealant as needed.
Fig. 25 Install horizontal vent sections.
14 | 10004798 |