Operating Modes - Viessmann Vitoflex 300-UF 530 Installation And Operating Instructions Manual

Operation

Operating Modes

62
Vitoflex 300-UF Installation & Operating
The following terms are displayed in the operating mode
line depending on the situation.
Off The boiler is switched off.
Filling Cold start. The combustion chamber
trough is being filled by the underfeed
auger.
Auger filling Direct or hot start with combustion
chamber still warm. The auger module
is being filled.
Igniting The igniter is running.
The system is being started.
Heating up The system is being slowly started.
Full load The boiler is running in regular operation.
Sustain Embers being sustained. Boiler set-point
temperature and the switching threshold
"Sustain on" have been exceeded.
Standby The boiler temperature is above the
switching threshold for standby and
no prompt.
Auger idling The isolating valve closes, the boiler
switches to standby. Example: After
malfunctions or the boiler set-point
temperature being exceeded. Upon
a prompt for heat there will be an
automatic new start.
Burn-out There is a malfunction or Soft touch
key 2 "Boiler OFF" has been touched.
The combustion chamber is cooling
down.
Emergency Non-optimized operation with adjustable
operation operational set-point values.
Example:
If a sensory mechanism necessary for
optimized operation is defective, the
switchover is being carried out
automatically.
Required sensory mechanisms:
lambda-sensor, combustion chamber
temperature sensor and negative
pressure measuring system.
Measurement The output control is blocked to
operation guarantee constant full load operation
during the measurement.