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Figure 36
TF10 CHIMNEY COMPONENT
CALCULATIONS
The minimum installed height of the TM-4500
and TMC-4500 Series fireplace system is 16'0"
(4.8 m). The maximum system height is 80'0"
(24.38 m)
To determine the number of chimney sections
and chimney components required, follow these
steps:
1. Determine total vertical height of the fire-
place installation. This dimension is the dis-
tance from the surface the fireplace sets on to
the point where smoke exits from the termina-
tion.
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:
TM/TMC Fireplaces
= 65
TF10-12
= 10
TF10-18
= 16
TF10-36
= 34
CTDTM Termination = 10" (254 mm)
CT2 Termination
= 15" to 23"
(381–584 mm)
S4 Stabilizer *
= 3" (76 mm)*
* Required for every 30' (9.1 m) of vertical
chimney and/or 10' of offset chimney.
4. Determine amount of chimney height re-
quired by subtracting total combined height of
all pre-selected components (fireplace and
chimney components from total desired height.)
Less Than 10' (3m)
2' Min. (610mm) 2' Min. (610mm)
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 Superior 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.
The offset and return elbows may be attached
together, or a section or sections of chimney
may be used between, but must not exceed 20'
(6.1 m) in total length between elbows ( Figure
39 ). If sections of pipe exceed 10' (3 m) be-
tween elbows, a chimney stabilizer must be
used at the midpoint. The stabilizer support
straps must be attached under tension (in shear)
to structural framing members above. When
two sets of elbows are used, the maximum
combined length of chimney used between
elbows cannot exceed 20' (6.1 m) ( Figure 41 ).
" (1657 mm)
Example: If C
" (260 mm)
10' (3 m).
" (413 mm)
If an offset exceeds 6' (1.8 m) in length, each
" (870 mm)
chimney joint beyond the first 6' (1.8 m) of
offset to the return elbow, must be secured by
a No. 8 x
underside of the joint ( Figure 37 ).
A " (13 mm) diameter hole must be drilled in
the chimney joint using a " (13 mm) diameter
drill. Hole should be drilled in center of joint
overlap ( Figure 38 ). Be sure to drill only through
the outer chimney casting. Do not puncture the
inner flue.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
2' Min.
(610mm)
3' Min.
(916mm)
= 10' (3 m) then C
cannot exceed
1
2
" sheet metal screw located at the
Maximum offset of chimney system is 30 . Two
offsets must not be assembled to form a 60
offset. However, two sets of offset and return
elbows may be used on a single flue system,
provided the total height of the system exceeds
22' (6.7 m) ( Figure 42 ).
Return elbow support straps must be securely
attached under tension (in shear) to structural
framing members above. Do not substitute a
TF10-30 offset elbow in place of a TF10-E30
return elbow.
TF10 Chimney
Figure 37
Underside of Chimney
Figure 38
OFFSET CALCULATIONS
1. Use Offset Chart to determine amount of
horizontal offset (A) and height (B) for various
chimney section assemblies.
2. Use "Height of Chimney Only" column in The
Vertical Elevation Chart to determine combina-
tions of chimney used above return elbow to
achieve desired heights. Reference Compo-
nents Effective Height Chart in vertical elevation
chart section.
3. Use Elevation Chart as job estimator only.
Add necessary firestop spacers and stabilizers
as required. Firestop spacers must be used as
shown in Figures 23 and 24 and stabilizers as
shown in Figure 29 .
Joints
No. 8 x
" SMS
11
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