Safety Devices - Froling SP Dual compact Operating Instructions Manual

2

2.8 Safety Devices

key control
touch control
18
(switches off the boiler to prevent overheating)
6.5 STANDBY KEY
❒ Press the standby key
➥ Automatic mode is switched off
➥ Control system follows the boiler shutdown procedure
➥ The pumps continue to run
(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
➥ The 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
heating water is released in the form of steam.
Fröling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com
(protection against overheating)
(protection against overheating)
Safety
Safety Devices