3.1 Ecotronic specification
Weather-compensated digital boiler and heating circuit control unit for
controlling three heating circuits with mixer, two heating circuits with
mixer plus DHW heating or one heating circuit with mixer, solar circuit
plus DHW heating.
■ With separately adjustable periods, heating curves, set temperature
values and heating programs
■ With cylinder temperature controller
■ With integral diagnostic system and additional functions
■ With intelligent buffer management
■ With heat management for up to 4 heating circuits (4th heating circuit
with mixer possible via KM BUS)
■ With commissioning assistant
Design and function
Modular design
The Ecotronic boiler control unit is a decentralised microprocessor
system. To control the boiler system, the Ecotronic comprises 3 PCBs
integrated into the boiler (boiler controller PCB, heating circuit PCB
and boiler-specific auxiliary PCB) and the programming unit with dis-
play integrated into the boiler.
Display
Buffer
Heating
DHW
Boiler
Buffer drawing
Select with
(
Functions
■ Continuously regulating air dampers optimise the heat-up and burn-
out process.
■ Lambda probe enables efficient combustion control, minimum emis-
sion levels and maximum efficiency.
■ Control of the electric return temperature raising facility
■ Release of the complete heating output during the start-up phase of
the boiler to the consumers (no output transfer into the heating water
buffer cylinder via return)
■ Precise temperature stratification in the heating water buffer cylinder
■ Use of the residual boiler heat after burnout
■ Supporting auxiliary and service functions
■ Enabling a second heat generator
■ Protection against overheating through heat transfer to the heating
water buffer cylinder, shutting down the flue gas fan and closing the
primary air damper
■ Activation of cylinder priority control if required
The requirements of EN 12831 for calculating the heat load are met.
According to the [German] Energy Saving Ordinance, the temperature
in each room must be individually controllable, e.g. by means of ther-
mostatic valves.
Ecotronic specification
Rated voltage
230 V~
Rated frequency
50 Hz
Rated current
10 A
Safety category
I
IP rating
IP 20 to EN 60529; ensure through design/
installation
3.2 Ecotronic accessories
Information on Vitotrol 200A and 300A
One Vitotrol 200A or one Vitotrol 300A can be used for every heating
circuit in a heating system.
The Vitotrol 200A can regulate one heating circuit; the Vitotrol 300A
up to three heating circuits.
No more than two Vitotrol 200A or one Vitotrol 300A can be connected
to the control unit.
Vitotrol 200A
Part no. Z008 341
KM BUS subscriber
■ Indicators:
– Room temperature
– Outside temperature
– Operating condition
■ Settings:
– Set room temperature for standard mode (normal room tempera-
ture)
Note
The set room temperature for reduced mode (reduced room tem-
perature) is set at the control unit.
– Operating program
■ Party and economy mode can be enabled via keys
■ Integral room temperature sensor for room temperature hook-up
(only for one heating circuit with mixer)
Ecotronic control unit for Vitoligno 300-H
VITOLIGNO 300-H
VIESMANN
21
5672 507 GB
3
