Blackheat HE HE15ST, Installation, Operation & Service Manual

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SECTION 11: V
ENTING AND
F
RESH
A
IR
S
UPPLY
51 of 73
Fi g ure 31: Air Supply with Flue Confi g urations
11. 8 Common Duct
When using a common air inlet duct, al w ays ensure that
the area of the common air inlet duct represents the area
of all air ducts.
C
52
C
32
C
12
C
32
C
62
B
22
C
12