Worcester Greenstar 8000 Life Installation And Maintenance Instructions Manual page 50

Commissioning
START
Set boiler to
HERE
maximum rate.
<
= less than
≥
= greater than
or equal to
No
Record values.
Do not adjust
the gas valve.
Turn off boiler and
call Worcester, Bosch
Group help line.
0330 123 3366
Fig. 73 Commissioning checks flow chart
50
Zero the analyser
in fresh air.
See notice above
O ≥ 20.6%
2
OR
No
CO < 0.2%
2
Yes
CO < 350ppm
CO/CO ratio
2
< 0.004
Yes
No
Flue integrity test
using analyser
Verify flue integrity
Check all seals around the
burner, internal flue seals,
and case seals.
Rectify where necessary.
Check CO and combustion
ratio at minimum rate
CO < 350ppm
CO/CO ratio
2
< 0.004
O ≥ 20.6%
2
OR
Yes
CO < 0.2%
2
No
Check CO and
combustion ratio
at maximum rate
CO < 350ppm
No
CO/CO
< 0.004
Yes
Set boiler to
minimum rate.
Boiler is operating
satisfactorily.
Yes
No further action
is required.
Greenstar 8000 Life – 6720883865 (2021/11)
ratio
2
0010023581-002