Roberts-Gordon HE15UT - Manual (Page 57)

SECTION 11: V ENTING AND F RESH A IR S UPPLY
51 of 73
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