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Appendix D - HeatShift
Y
Max. Allowable
Vertical Rise
Horizontal
30"
36"
42"
48"
54"
60"
66"
12'-0"
X
Offset
24"
36"
48"
60"
72"
84"
96"
96" Max.
5"
Maximum allowable Horizontal Offset
5"
Maximum allowable Horizontal Offset
Installation
®
LDK 1, LDK 3 or LDK 4
8"
Min. bend
radius
+
5"
Support horizontal
sections of pipe using
strapping every 24"
12
DO NOT RUN
Min. bend
pipe horizontal.
radius
Minimum slope 4:12
Top of fireplace
'X'
(offset for take-off
that's furthest away)
Min. 2-1/2" opening required at ceiling
14"
min.
Min. bend
radius
+
5"
Support horizontal
sections of pipe using
strapping every 24"
12
DO NOT RUN
Min. bend
pipe horizontal.
radius
Minimum slope 4:12
Top of fireplace
'X'
(offset for take-off
that's furthest away)
Ceiling
Min. 2-1/2"
clearance
to ceiling
Min. 1"
clearance to
combustibles
around pipes
4
Ceiling
LDK 7 - Duct
Termination Plates
Min. 1"
clearance to
combustibles
around pipes
4
Vertical Rise
'Y'
(Min. 30"
Max. 12'-0")
Vertical Rise
'Y'
(Min. 30"
Max. 12'-0")
77
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