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You can find this, and all issued technical bulletins on the Worcester website at:
9
Worcester, Bosch Group, Cotswold Way, Warndon, Worcester WR4 9SW Technical Services: 0330 123 3366 | [email protected]
Bosch Flue and Ventilation Quick Reference Guide 2022
Horizontal flue terminal distances from openings within a wall.
When multiple horizontal room sealed flues terminate on the same wall a clearance zone will need to be defined. For guidance on
this please refer to
figure 8
and ‘
Y
’ value table below for minimum required clearances.
Please note:
If the combined net heat input is above 333 kW, then Horizontal low-level terminals are not permitted, and the
guidance of the ‘Clean air act’ should then be followed.
(
See page 13
)
(
In accordance with IGEM-UP-10: 3.1.1
)
Example
3 Flue termination:
Left hand Boiler GC 7000 WP 50 kW, ‘Y’ = 438mm
Right hand Boiler GC 7000 WP 100 kW ‘Y’ = 792mm
For clearance below terminals please use ‘Y’ Value for the highest net input, for this example ‘Y’ = 792mm (GC7000WP 100 kW)
IGEM Calculation used
Description
Unit
50 kW
65 kW
85 kW
100 kW
125 kW
145 kW
Distance Y –
(
IGEM-UP-10, Fig. 7)
(Distance Y = 7.232 x (net heat input kW) + 93.708)
Distance ‘Y’ from an opening
mm
438
559
687
792
948
1107
Figure 8
