Main MULTIPOINT FF User Operating, Installation And Servicing Instructions page 14

14
12.2 FLUE RESTRICTION
The Installation notes in these Instructions, particularly those
regarding Maximum Flue Lengths and Configuration Options,
take precedence over any universal instructions included in
flue component packs.
To ensure the correct operation of the appliance, certain
flue lengths require one of two flue restrictor rings to be
fitted to the fan inlet. (Fig. 12).
Restrictor requirements for the horizontal and vertical flue
configurations shown in Figures13 and 17 are as per tables
9 and 10 respectively.
Fig. 12
Horizontal configuration
Configuration
A
Configuration
E
Table 9
Vertical configuration
Configuration
A
Configuration
B
Configuration
C
Table 10
12.2. 1 Restrictor Ring Installation.
Remove the electrical connections to the fan.
Unfasten the fixing screws (Fig. 12, pos. 1) securing the fan
mounting plate to the appliance.
Remove the fan, unfasten the screws securing the mounting
plate to the fan (Fig. 12, pos 3).
Place the restrictor ring between the fan and the mounting
plate (Fig. 12, pos. 2), align the holes and re secure (Fig.
12, pos 3).
Re assemble the fan to the appliance and replace the
Fig. 13
electrical connections.
12.3 FITTING A HORIZONTAL FLUE
Possible flue configurations are as per Fig 13.
The concentric horizontal flue system has an inner flue tube
diameter of 60 mm and an outer air duct diameter of 100
mm.
Standard horizontal flue terminal kits and flue extension
components are detailed in Section 3, Page 6, Table 2 -
Flue Details.
The Maximum and Minimum flue lengths available for
horizontal configurations are as per table 11.
Flue length
Up to 2.0 m
White Flue Elbow only –
2.0 m – 3.0 m
no additional bends
3.0 m – 4.0 m Max
Direct vertical rise from the
Up to 2.0 m
appliance: Vertical Adapter
2.0 m – 3.5 m Max
+ 1 x 90 degree bend
Flue length
No additional bends
Up to 4.0 m Max
Straight vertical
Up to 3.5 m
2 x 45 degree bends
3.5 m – 4.0 m Max
Direct vertical rise from the
Up to 2.5 m
appliance: Vertical Adapter
2.5 m – 4.0 m Max
+ 1 x 90 degree bend
Restrictor
Diameter
58
68
None
68
None
Restrictor
Diameter
58
58
68
58
68
6 720 607 160