3.3.1 Switching on the power supply
❒ Turn on the main switch
➥ There is voltage at all of the boiler's components
➥ When the control has completed the system start, the boiler is ready for
operation
3.3.2 Switching on the boiler
❒ For other modes press the relevant function key
➥ Information on function keys in the relevant operating instructions of the boiler
controller
3.3.3 Regulating the boiler
Please see the relevant operating instructions for the boiler controller for the
necessary control steps, as well as displaying and modifying parameters
3.3.4 Switching off the boiler
❒ Switch off the boiler by tapping “Boiler off”
➥ The boiler follows the shutdown program and switches to "
Boiler off" status
➥ The combustion unit is switched off, the chamber discharge unit and the entire
hydraulic system remain active
3.3.5 Switching off the power supply
WARNING
When turning off the main switch in automatic mode:
Serious combustion faults leading to serious accidents are possible.
Before turning off the main switch:
❒ Switch boiler off by tapping “Boiler OFF”
➥ The boiler follows the shutdown procedure and switches to "Boiler
off“ status after the cleaning cycle
❒ Turn off the main switch
➥ Boiler controller is switched off
➥ The components powered via the control cabinet are powered down
➥ CAUTION: the expansion switch cabinet, which has its own power supply, is
still live.
NOTICE! Frost protection function is no longer active!
Operating the System
3
Heating up the boiler
Operating Instructions T4 24-150 | B0830317_en 25
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