New Buck Corporation 20 Room Heater Installation And Operation Manual page 44

3 FT.
METAL
CHIMNEY
CHIMNEY "10 FT." RULE (MINIMUM HEIGHTS)
LESS THAN
10 INCHES
2 FT.
2 FT. MINIMUM HEIGHT ABOVE THE
ROOF WITHIN 10 FT. HORIZONTALLY
GREATER
THAN
10 FT.
10 FT.
MASONRY
CHIMNEY
Stack wood in criss-cross
pattern under a shelter to allow
air flow to dry the wood and to
keep wood from rain. Green
wood may have 50-60%
moisture content. Wood
seasoned outside uncovered
may have 40% moisture
content. Wood properly
seasoned in a covered
environment will have less than
20% moisture content.
2 FT.
3 FT.