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Appendix D—HeatShift System
Overview (applies to LDK7)
Flexible or rigid,
5” diameter
UL-181, Class 1
Air Duct (4)
(use LDK6 kit
or equivalent)
Min. 2-1/2” opening required at ceiling
Min. 30”, Max. 12’-0”
6HHWDEOHIRURVHWV
Min. 14”
32-3/8”
8-1/2”
14-1/2”
9-3/8”
Ceiling
Min. 1”
clearance to
combustibles
around pipe
NOTE Discharge opening must be located in the
same room as fireplace when using LDK7.