DO NOT BACK FILL AROUND SNORKEL. SOIL SHOULD NOT BE LESS THAN 4" BELOW SNORKEL.
c) A minimum of an 8 ft. vertical rise. |
d) Two sets of 45 degree elbow offsets within these |
vertical installations. From 0 to a maximum of 8 ft. a |
vent pipe can be used between elbows. (Fig. 57) |
e) 7DVCS must be used to support offsets. (Fig. 58) |
This application will require that you first determine the roof |
pitch and use the appropriate 7TDVSKV (A,B or F). (see |
FOUNDATION
RECESS
WATERTIGHT
SEAL
AROUND
PIPE
SNORKEL
WALL
SCREWS
Venting Components, page 26) |
SHEET METAL |
|
SCREWS | Fig. 55 |
|
Fig. 57 |
MAX. 8 Ft. |
) |
If the foundation is recessed, use recess brackets (not supplied) for securing lower portion of the snorkel. Fasten brackets to wall first and then secure to snorkel with self drilling #8 x 1/2 sheet metal screws. It will be necessary to extend vent pipes out as far protruding wall face (Fig. 55).
VERTICAL THROUGH THE
ROOF APPLICATIONS
MAXIMUM
10 FT
(3048mm)
MINIMUM
| (2438mm) | |
| MAX. | |
MAX. 8 Ft. | 40 FEET | |
(12.2m) | ||
(2438mm) | ||
MIN. | ||
| ||
| 8 FEET | |
| (2.44m) | |
SIDE VIEW |
|
TYPICAL 7DVCS |
APPLICATION |
TYPICAL ROOF |
SUPPORT |
APPLICATION |
Fig. 58
Fig. 59
8FT./
MAXIMUM 40 FT.
VERTICAL
RISE
PIPE STRAPS EVERY 3' (914mm)
Fig. 56
This Gas Fireplace has been approved for,
a)Vertical installations up to 40 feet (12 metres) in height. Up to a 10 ft. horizontal vent run can be installed within the vent system using a maximum of three 90o elbows.
b)Up to two 45o elbows may be used within the horizontal run. For each 45o elbow used on the horizontal level the maximum horizontal length must be reduced by 18 inches.
Example: Maximum horizontal length |
| ||
0 | - | 45o elbows | 10 ft. |
1 | - | 45o elbows | 8.5 ft. |
2 | - | 45o elbows | 7 ft. |
VENT TERMINATION
|
| STORM COLLAR | |
ROOF | 24" Min. | ROOF FLASHING | |
| |||
| (610mm) |
| |
|
| ROOF SUPPORT | |
ATTIC INSULATION |
| ||
MAX. |
| CEILING JOISTS | |
40 FEET | JOISTS | ||
| |||
(12.2m) |
| ||
|
| ||
MIN. |
|
| |
8 FEET |
|
| |
(2.44m) | ATTIC INSULATION |
| |
| SHIELD |
| |
Fig. 60
TYPICAL
The minimum height of the vent above the highest point of penetration throught the roof is 2 feet. See Fig. 60.
- 24 -