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8.4 MULTIPLE FLUE INSTALLATION
Common flues may be used on multiple installations only if all the heaters are of the same burner
•
system and fuel type and should be sized to ensure complete evacuation of the flue products from the
installation.
Where one appliance is to be used more regularly or for longer periods than the others in the group, it
•
should be connected at the point nearest the main flue. Please refer to BS6644 for further information
and recommendations.
A split collar should be fitted above the draught diverter so that the flue is secure but can be
•
disconnected for servicing. The weight of the flue must be adequately supported by securing clips and
not by the heater.
If a 600mm vertical rise before connection to the common header is not possible, the common header
•
should be sized to ensure adequate evacuation of all products of combustion.
8.5 FAN DILUTION SYSTEMS
An alternative to a natural draught flue system is a Flue dilution system, which is suitable for connection to the Mini
Copper-Fin's but must be properly designed by a specialist flue company.
8.6 BALANCED COMPARTMENTS
The equipment is suitable for siting within a balanced compartment. This compartment must be designed by a
specialist company.
9.0
AIR SUPPLY
The following information is based on single appliance installations only. If more than one appliance is being
used, BS5440-2 or BS6644 (as appropriate) should be consulted to calculate the necessary requirements.
appliance and must be installed outside or in a room separated from inhabited rooms
This is a Type B
11
with suitable ventilation directly to the outside.
9.1 NATURAL VENTILATION
The combustion air requirements are as follows:
Gross
Input
Model
(kW)
MC91CE
23.8
MC136CE
35.6
MC181CE
47.0
MC226CE
59.4
TABLE 9.1
Net
Ventilation
Input
(Room)
(kW)
(cm
)
2
26.4
106
39.6
160
52.8
212
65.9
264
COMBUSTION VENTILATION REQUIREMENTS MC91CE – MC226CE
Compartment
(Direct to Outside)
High
Low
(cm
)
(cm
)
2
2
132
264
199
396
264
528
330
659
Compartment
(To Internal Space)
High
Low
(cm
)
(cm
)
2
2
264
528
396
792
528
1056
659
1318
13
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