DESCRIPTION
10
TECHNICAL DOCUMENTATION
BOILER CONTROL
If there is a heat demand, and if all necessary conditions have been fulfilled and all safety devices are
satisfied, the boiler will start. This heat requirement will arise if:
• the flow temperature of the boiler is less than the required flow temperature.
• the frost protection has been triggered independently of the operating conditions.
The boiler control unit adjusts the boiler output by changing the fan speed such that the desired temperature
is attained and maintained. The actual flow temperature is controlled within 4°C of the target temperature.
SAFETY ASPECTS
The following safety devices are installed on the boiler:
• Temperature Monitoring System.
• High Limit Temperature Monitoring System.
• Limit Temperature Monitoring System.
• Flame Monitoring by means of Ionisation Measurement.
• Fan Speed Monitoring.
• Flow Monitoring using a Flow Water Temperature Sensor.
If one of these safety systems is activated, the boiler will go to an interlocking or lockout condition and will be
switched off. Lockout conditions can only be reset by pressing the reset button, after rectifying the fault.
Содержание Ethos RS 350
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