ghi_tx001462gb.fm
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Operation HI 400HD D / HD G
4.19 Flex Ducting Options
Refer to the chart below for the maximum allowable return and supply duct lengths
for your machine.
NOTICE: Do not exceed the maximum total lengths specified in the chart.
Exceeding these lengths, or blocking any of the duct openings, constricts the air
flow through the machine and may cause a high temperature shutdown fault.
MODEL RETURN DUCTING SUPPLY DUCTING
—
Return
duct
adapter
Maximum
number of
25 ft. duct
sections
Total
combined
length
Supply
duct
adapter
Length of
each duct
section
(ft)
Maximum duct sections
per opening
Total
combined
length
Qty Length
HI 400HD D
0620940
HI 400HD G
0620943
1 x 20 in. 1 25 ft
1 X 20 in. 25 1 25 ft 25 ft
HI 400HD D
0620941
HI 400HD G
0620944
2 X 16 in. 25 1 25 ft 50 ft
HI 400HD D
0620942
HI 400HD G
0620945
3 X 12 in. 25 1 25 ft 75 ft
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