Venting Installation
Continued
is 6 feet of angled run. A maximum of two 6 feet angled run sections per chimney system (see Figure 19).
RETURN
RETURNELBOW ELBOW
|
| 6' MAX | |
|
| (15.2cm) | |
6' MAX | CEILING |
| |
(15.2cm) |
| ||
SUPPORT |
| ||
|
| ||
| PIPE | OFFSET | |
OFFSET | |||
ELBOW | |||
ELBOW | 6' MAX | ||
(15.2cm) | |||
RETURN | |||
| RETURN | ||
ELBOW |
| ||
| ELBOW | ||
|
| ||
6' MAX |
|
| |
(15.2cm) |
|
| |
| 6' MAX | 6' MAX | |
| (15.2cm) | (15.2cm) | |
OFFSET
ELBOW
run, 16 feet minimum for a run with 1 elbow set and 25 feet minimum for a run with 2 elbow sets. (A set consists of one starter elbow and one return elbow.)
Uncommon circumstances such as neighboring hills, tall trees, or strong wind areas can cause down drafts in chimney system. In such cases, going beyond the minimum recommended height would be preferable to provide a better draw.
The fireplace height approved for any chimney run with this fireplace system is 40 feet measured from bottom of firebox to flue
of pipe (see Figure 21).
Storm
Collar
| Flashing |
Figure 19 - Typical Offset Installations |
|
10 Foot Rule |
|
All chimney terminations must extend a mini- | Firestop |
mum of 3 feet above the highest point where it | Spacer |
passes through the roof and must be at least 2 |
|
feet above roof with a 10 foot horizontal span |
|
(see Figure 20). |
|
IMPORTANT: If an exposed portion of chimney is greater than 4 feet above the roof line, use support wires to keep chimney secure. Support wires may be attached to outer pipe of chimney with screws, if screws do not
penetrate inner flue pipe.
MINIMUM
HEIGHT
15FT.
(4.5m)
MAXIMUM
HEIGHT
CHASE
TERMINATION
40FT.
(12m)
Figure 20 - 10 Foot Rule |
| |
Minimum / Maximum Chimney |
| |
Height |
| |
The minimum height of the chimney (mea- | Figure 21 - Maximum Chimney Height | |
sured from the base of the fireplace to the flue | ||
| ||
gas |
|
55511E | www.desatech.com | 9 |