250 kW
Flue Gas CO
2
@ Max Rate % 9.0 ± 0.3
G20/LNG @ Min. Rate % 9.0 ± 0.3
*Same values apply to
models 500, 750 and 1000.
6. Check the gas rate and measure the combustion CO/CO
2
content. The CO/CO
2
ratio of the ue
gas on each module should not be greater than 0.004. The CO
2
values should be correct to the
following gures:
Carry out functional checks as appropriate.
4.3
PARTIAL ISOLATION OF BOILERS IN CASCADE SYSTEMS
It is possible to continue normal operation of the boilers without any changes to the wiring,
in the event that one of the boilers in the chain is either not in working condition, or is under
maintenance. Perform one of the following procedures depending on which boiler is not in
service.
WARNING
Always isolate all of the boilers from the main electrical supply before
executing these procedures.
Note:
a) All changes to terminals as listed below are in accordance with the terminal number tables in Section 2.19.2
of this manual.
b) The letter “N” below indicates the total number of installed boilers.
1. Remove the lower front panel of any boilers requiring changes, to access the necessary
electrical terminals.
2. After any changes on boiler setup always perform an Auto Detection procedure as detailed in
Section 3.8.7 of this manual.
To Next Page
Loading...
