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Appendix D - HeatShift
4”
8”
LDK 3
Framing
“on edge”
1-1/2” min. clearance
to combustibles (top)
2” min. clearance
to combustibles
(use steel stud for
LX appliances)
2” min. clearance
to combustibles
(use steel stud for
LX appliances)
Ceiling
Min. 2-1/2” clearance to ceiling
1/2”
5”
1/2” min.
clearance to
combustibles
rear & sides
1” min.
clearance to
combustibles
all around pipes
1 x 4 on edge to
support plenum.
Maintain 1” clearance
between pipes and
combustibles
Framing
“on edge”
1-1/2” min. clearance
to combustibles (top)
Ceiling
Min. 2-1/2” clearance to ceiling
1/2”
1/2” min.
clearance to
combustibles
rear & sides
1” min.
clearance to
combustibles
all around pipes
Framing and Clearances