Safety Devices - Fröling SP Dual compact 15 Operating Instructions Manual

Safety

Safety Devices

2.7 Safety Devices
Operating Instructions SP Dual compact | B1500319_en
(switches off the boiler to prevent overheating)
6.5 BOILER OFF
❒ Tap "Boiler off"
➥ Automatic mode is switched off
➥ Control follows the boiler shutdown procedure
➥ Pumps continue to run
11 MAIN SWITCH (switches off the power supply)
Before carrying out work on/in the boiler:
❒ Press the standby key
➥ Automatic mode is switched off
➥ Control system follows the boiler shutdown procedure
❒ Switch off the main switch and let the boiler cool down
13 SAFETY TEMPERATURE LIMITER (STL)
The STL switches off the combustion system at a maximum boiler temperature of 105
°C. The pumps continue to run. Once the temperature falls below approx. 75°C, the
STL can be reset mechanically.
TA THERMAL DISCHARGE VALVE
The thermal discharge valve opens at approx. 100°C and feeds cold water to the
safety heat exchanger to lower the boiler temperature
(protection against overheating/excess pressure)
SV SAFETY VALVE
When the boiler pressure reaches a maximum of 3 bar, the safety valve opens and the
heated water is blown off in the form of steam.
(protection against overheating)
(protection against overheating)
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