21
2 Safety
formed at the shut-off limit of the CO/O
2
control device, see chapter 8.10.5 CO Control:
Start-up O2 Monitoring Shut-off Limits.
• Testing at the shut-down thresholds is also not required if the parameter setting for the
tolerance at the air deficiency side is 0 digits. Proof must be obtained of the correct setting
of this parameter during commissioning.
• In cases where mixed combustion is activated (simultaneous combustion of more than
one fuel), the precomputed setpoint curves must be verified during commissioning by
checking the combustion characteristics.
The operating modes must be analysed in terms of excess air and the combustion char-
acteristics must be measured during the operating mode in which the lowest excess air
value has been configured.
Safe and stable combustion must be ensured during the activation and deactivation of a
fuel feed.
2.3.7 Components/Devices of External Manufacturers
Requirements for third-party manufacturers whose devices are connected to the com-
munication interface of the CMS.
All bus nodes connected directly to the CMS (Ethernet devices, e.g. switches) must guarantee
insulation in accordance with DIN EN 60950-1
All devices connected to SELV terminals (sensors, converters, frequency inverters) must
guarantee/maintain insulation in accordance with DIN EN 60730-1 SELV.
To Next Page
Loading...
Need help?
General
