Venting Installation
Continued
Existing
Ceiling 
Frame
Firestop 
Spacer
Screws or 
Staples (Min. of 8)
Figure 19 - Firestop Spacer with Living
Space Above Ceiling
| Screws or Staples |
Firestop | (Min. of 8) |
Spacer | Existing |
| |
| Ceiling |
| Frame |
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 fireplace to flue
WARNING: Do not operate an unvented gas log set in this fireplace with the chimney removed.
Figure 20 - Firestop Spacer with Attic
Space Above Ceiling
10 Foot Rule
All chimney terminations must extend a minimum of 3 feet above the highest point where it passes through the roof and must be at least 2 feet above roof with a 10 foot horizontal span (see Figure 21).
IMPORTANT: If an exposed portion of chimney is greater than 4 feet above the roofline, 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.
Figure 21 - 10 Foot Rule
Flashing
Minimum
Height
15 Ft.
Firestop
Spacer
Maximum
Height
Chase
Termination
50 Ft.
Minimum / Maximum Chimney
Height
The minimum height of the chimney (mea- |
|
sured from the base of the fireplace to the flue |
|
gas |
|
run, 16 feet minimum for a run with 1 elbow set |
|
and 25 feet minimum for a run with 2 elbow | Figure 22 - Maximum Chimney Height |
sets. (A set consists of one starter elbow and |
|
one return elbow.) |
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