Checking the draught
A
Test port
7
10 mm
Check the draught in Pa (100 Pa = 1
mbar) (test port behind the draught
hood) and record it in the service
report on page 32.
Note
Required boiler draught: 3 Pa (0.03
mbar).
The chimney draught must not be
greater than 10 Pa (0.1 mbar). Install
a draught stabiliser (agree details with
your local flue gas inspector) inside
the chimney, if required.
Further details regarding the individual steps
(cont.)
14
Initial start-up, inspection, maintenance
5692
647
GB
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