Froling FHG - Safety Devices Overview; Overheating Prevention Devices

Safety
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2.4 Safety devices
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Main switch
For shutting down the entire system
 All components are switched off and
powered down
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Overheat Thermostat
(Safety Temperature
Limit Switch – STL)
 See below
2.4.1 Devices for Preventing the Boiler from overheating
The FHG comes with safety systems to prevent the
following:
• Pressure in the boiler exceeding 30 psi (over pressure)
• Boiler water temperature exceeding 212ºF (100º C)
Pressure Relief Valve
Protection against over-heating/ excessive pressure:
When the system pressure reaches a maximum of 30 psi (2 bar), the
Pressure Relief Valve opens and the heating water is released in the form
of steam.
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