Less Than 10' 
3'
Min
Figure 34
Note: It is recommended that all exterior ex- posed metal fireplace components; such as terminations, flashings, storm collars and/or flue be painted with a premium quality, high temperature, rust preventative paint designed for metal. This is especially important when installations are made in abnormally adverse or corrosive environments; such as near lakes, oceans or in areas with consistently high hu- midity conditions. Consult the paint manufac- turers instructions for proper preparation and application.
TEN FOOT RULE SUMMARY
The minimum chimney height above the roof and/or to adjacent walls and buildings is speci- fied by all major building codes.
If the horizontal distance from the peak of the roof is less then 10', the top of the chimney must be at least 2' above the peak of the roof.
If the horizontal distance from the chimney edge to the peak of the roof is more than 10' a chimney height reference point is established on the roof surface 10' horizontally from the chimney edge. The top of the chimney must be at least 2' above this reference point. In all cases, the chimney cannot be less then 3' above the roof at the edge of the chimney.
The 2' in 10' rule is necessary in the interest of safety but does not ensure
2' Min.
10' | 3' |
| Min |
MULTIPLE TERMINATIONS
If more than one termination is located in the same chase or within the same general proxim- ity, we suggest they should be separated in distance at least 24" horizontally from flue cen- ter to flue center and stacked or staggered vertically at least 18" apart, from the termina- tion of one smoke exit to the termination of another smoke exit (Figure 35 ).
CTD
18"
18"
CTDT 
CTDT
24"
24"
Figure 35
This suggestion is provided in the interest of better operation. If the terminations are located too close to each other, smoke may migrate from one flue into the other.
FTF8 CHIMNEY COMPONENT
CALCULATIONS
The minimum installed height of the com- pleted fireplace system is 15' 0". The maxi- mum height is 60' 0".
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
To determine the number of chimney sections and chimney components required, follow these steps:
1.Determine total vertical height of the fireplace installation. This dimension is the distance from the surface the fireplace sets on to the point where smoke exits from the termination.
2.Determine the number of chimney compo- nents required, except chimney sections. This would include firestop spacers, stabilizers, roof flashing, etc.
3.The effective heights of the components are:
The Fireplace | = | |
= | ||
= | ||
= | ||
= | ||
= | 4" | |
= | 12" to 18" | |
= | 15" to 23" | |
= | 12" to 18" | |
= | 6" to 14" | |
= | 8" to 14" | |
= | 3"* |
*Required for every 30' of vertical chimney and/or 10' of offset chimney.
4.Determine amount of chimney height re- quired by subtracting total combined height of all
Reference Vertical Elevation Chart and deter- mine the number of chimney sections (quantity and length) required.
SPECIAL OFFSET INSTRUCTIONS
To clear any overhead obstructions, you may offset your chimney system using Security's 30° offset and return elbows. Use two elbows - an offset elbow to initiate the offset and a return elbow to terminate it. A 30° offset elbow, an- gling in any direction, may be the first compo- nent used off the top of the fireplace flue collar.
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