Roberts Gorden HE40DL Heating System User Manual


 
SECTION 11: VENTING AND FRESH AIR SUPPLY
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Figure 31: Air Supply with Flue Configurations
11.7 Common Duct
When using a common air inlet duct, always 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