Safety | 2
B1300122_en | Operating instructions Lambdamat LM 800-1000
13
2.5 Safety devices
1
BOILER OFF
(switches off the boiler to prevent overheating)
r
Tap “Boiler off”
Ä
Automatic mode is switched off
Ä
Control system follows the boiler shutdown procedure
Ä
The pumps continue to run
NOTICE! Never use the main switch!
2
MAIN SWITCH
(switches off the power supply)
Before carrying out work on the boiler:
r
Tap “Boiler off”
Ä
Automatic mode is switched off
Ä
Control system follows the boiler shutdown procedure
r
Switch off the main switch and let the boiler cool down
3
SAFETY OVERLOAD SWITCHES, MOTOR PROTECTION SWITCHES, RESIDUAL
CURRENT PROTECTIVE DEVICES (RCD)
Switch off the related component in the event of fault currents or overloads.
4
SAFETY TEMPERATURE LIMITER (STL)
(protection against overheating)
The STL switches off the combustion system when the boiler reaches 95 - 100°C. The
pumps continue to run. Once the temperature falls to below approx. 85°C, the STL can be
reset mechanically.
5
DOOR CONTACT SWITCH
When the door is opened, the induced draught is kept at a constant speed and the
combustion air and FGR blower fan stops.
TV
THERMAL DISCHARGE VALVE
(protection against overheating)
