BLACKHEAT® HE INSTALLATION OPERATION AND SERVICE MANUAL
Figure 29: Individual Flue Connection Detail
| Fan Assembly |
Fan Tube | |
| Nut |
| Lockwasher |
Screw | |
(Torque: 2 Nm | |
Flue Adapter | 18 in lb) |
| |
Flue Pipe |
|
Figure 30: Flue Connection Dimensions
C 
End of Tube
A
Fan Tube | Fan |
B
Fan Model | A | B | C |
MB 56 2B M | 98 mm | 105 mm | 52 mm |
Torin | 79 mm | 95 mm | 45 mm |
Torin | 86 mm | 102 mm | 51 mm |
Magnetek JF1G | 89 mm | 102 mm | 51 mm |
Fan Part Number | A | B | C |
90710051 (IP55) | 76 mm | 95 mm | 31 mm |
90710052 (IP55) | 82 mm | 101 mm | 38 mm |
90710053 (IP55) | 82 mm | 101 mm | 38 mm |
11.6 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 49, Section 11.3 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.
11.6.1 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 Page 51, Figure 31).
•The flue and fresh air supply must penetrate the roof at a minimum of 1,000 mm apart.
(See Page 51, Figure 31).
•The flue must penetrate 1,000 mm higher than the fresh air inlet on the same wall. (See Page 51, Figure 31).
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