Outside Combustion Air Supply; Figure 16: Individual Flue Connection Detail; Figure 17: Flue Connection Dimensions - Roberts Gorden AG15ST Installation, Operation & Service Manual

Figure 16: Individual Flue Connection Detail

Fan Tube
(Torque: 2 Nm
Flue Adapter
Flue Pipe

Figure 17: Flue Connection Dimensions

9.6 Outside Combustion Air Supply

Clean air must be ducted into the burner box through the
100 mm diameter spigot on the back of the burner box.
See Page 32, Section 9.3 for recommendations on duct
length. Air duct should be as straight as possible. Consult
the manufacturer if more than 1 x 90° bend is necessary.
The fresh air duct must be self supporting.
Lockwasher
Screw
18 in lb)
Fan Part Number
90710051
90710052
90710053
Nut
A B
76 mm 95 mm 31 mm
82 mm 101 mm 38 mm
82 mm 101 mm 38 mm
9.6.1 Air Supply Requirements
When fresh air duct is used, follow one of these rules:
• The flue must penetrate the roof while fresh air can
penetrate any wall. (See Figure 18, A)
• The flue and fresh air supply must penetrate the roof
at a minimum of 1,000 mm apart. (See Figure 18, B)
• The flue must penetrate 1,000 mm higher than the
fresh air inlet on the same wall. (See Figure 18, C)
SECTION 9: V
ENTING AND
Fan Assembly
C
F A S
RESH IR UPPLY
33