DOC2012/2000en
17
2.4 Boiler protection
The R2000 is protected by the following systems:
Water flow switch
The water flow switch is installed in the flow manifold and monitors continuously the water flow.
If the water flow falls below a preset level, the burner is shut down and go to lock-out.
The water flow switch is factory set and should not be adjusted.
High limit thermostat
In the event of failure of the control thermostat, a preset high limit thermostat will shut down the burner
and go to lock-out.
Pressure relief valve
The maximum operating pressure of the R2000 boiler is 11 bar. The standard safety valve supplied is set to 3 bar.
If a different pressure setting is required this should be specified and will be set at the factory.
Gas burner control
The burner control unit provide control and supervision of the atmospheric burner.
The sequence controller is coupled to the spindle of the control circuit and to the flame supervision unit
displaying the status, the symbol appearing above the reading mark indicates the firing sequence or lock-out
condition. The pilot flame is supervised by ionisation current detection.
3 Safety
Installation requirements
Please read these requirements before commencing installation.
The product has to be installed by a recognized installer fully according to the current national and local
demands, norms and standards. The installation procedure should only be used for heating systems with a
maximum water temperature of 95°C. We emphasize that you should always give priority to the above
mentioned standards and regulations and that the installation regulations should be considered as an addition
to these standards and regulations.
Explanation of the icons used in this manual
Instruction of extreme importance in order to guarantee proper functioning of the boiler.
E
Not following the operation procedures can cause serious damage to the boiler, personal injuries
or environmental pollution.
Electric shock hazard.
Useful information.
Summary of Contents for R2000 Series
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