Commissioning; Setting The Coding Card; System And Module Commissioning; Settings For Systems With A Cascade Module In The Bus System - Bosch EMS 2 Manual De Instalación

4

Commissioning

NOTICE: Risk of damage to system through pump failure!
▶ Fill and vent the system before switching it on so that
the pumps do not run dry.
First make all electrical connections correctly and only then
carry out the commissioning!
▶ Follow all installation instructions for all components
and assemblies in the system.
▶ Only switch on the power supply when all modules are
set up.
4.1

Setting the coding card

When the coding card is in a valid position and communication is
established via the BUS system, the status indicator shines green
continuously. When the coding card is in an invalid or intermediate
position, the status indicator initially does not shine and then shines red.
If the coding card on a higher level module MC 400 is set to
10 and there is a direct BUS connection between a heat
source and this module, the system cannot be
commissioned.
4.2

System and module commissioning

NOTICE: Risk of damage to system through pump failure!
▶ Fill and vent the system before switching it on so that
the pumps do not run dry.
If an IGM is installed, the following points must be observed:
▶ At the IGM set the maximum and minimum output for the
connected device.
▶ Set the maximum output to at least 5 kW, since
otherwise the IGM is not used by the cascade control.
▶ If the connected device is a two-point device, set
maximum output = minimum output.
1. Isolate all poles of the mains voltage and secure against reconnection.
2. Ensure the system has been isolated from the supply.
3. Connect all required sensors and actuators.
4. Place power supply (230 V AC) mechanically on all installed modules
and heat sources.
4.2.1 Settings for systems with a cascade module in the BUS
system
1. Adjust control strategy with the coding card on the cascade module.
2. Set the coding card on other modules as applicable.
3. Switch on the power supply (mains voltage) to the entire system.
The module MC 400 detects the connected heat sources. This can
take up to 5 minutes depending on the number. During this time
there is no response to the heat command of the user interface. Once
the first heat source is detected, the MC 400 activates the supply
voltage of the control unit with BUS system EMS 2 / EMS plus (CON)
When the module indicator lights up green continuously:
4. Commission and set up the user interface as described in the
accompanying installation instructions.
5. Set room influence on the user interface to 0.
6. Check the settings on the user interface for the cascade and adjust
them to the installed system if required.
MC 400
4.2.2 Settings for systems with 2 or more cascade modules in the
BUS system
Up to 16 heat sources can be installed in one system. In such cases,
there is one higher level cascade module and 1 to 4 subordinate cascade
modules.
1. Adjust the control strategy with the coding card on the higher level
cascade module.
2. Set the coding card on the subordinate cascade modules to 10.
3. Set the coding card on other modules as applicable (e.g. MM100).
4. Switch on the heat source power supply.
5. Turn on the mains power supply for modules.
The MC 400 detect the connected heat sources and other MC 400
(subordinate modules). This can take up to 5 minutes depending on
the number. During this time there is no response to the heat
command of the user interface. Once the first heat source is
detected, the MC 400 activates the supply voltage of the control unit
with BUS system EMS 2 / EMS plus (CON).
6. Commission and set up the user interface as described in the
accompanying installation instructions.
7. Set room influence on the user interface to 0.
8. Check the settings on the user interface for the cascade and adjust
them to the installed system if required.
4.3 Status display for the heat source/subordinate
cascade modules on the subordinate cascade module
In addition to the coding card, the module has 4 LEDs that indicate the
respective status of the connected heat source/modules.
• LED 1, 2, 3 and 4 indicate the status of the heat sources/subordinate
cascade modules connected to the module:
– off: disconnection or no communication
– red: heat source found but connection interrupted or heat source
fault
– yellow: heat source connected, no heat requirement
– flashing yellow: heat source found, heat requirement exists, but
the burner is off
– green: subordinate module found or heat source found, heat
requirement exists, burner is operating, heating active
– flashing green: subordinate module found or heat source found,
heat requirement exists, burner is operating, DHW heating active
4.4 Status display for the heat source on the subordinate
cascade module
In addition to the coding card, the module has 4 LEDs that indicate the
respective status of the connected heat source/modules.
• LED 1, 2, 3 and 4 indicate the status of the corresponding heat
source:
– off: disconnection or no communication
– red: cascade module found or heat source found, but connection
interrupted or heat source fault
– yellow: heat source connected, no heat requirement
– flashing yellow: heat source found, heat requirement exists, but
the burner is off (for example when the standby period of the heat
source is active)
– green: heat source found, heat requirement exists, burner is
operating, heating active
– flashing green: heat source found, heat requirement exists,
burner is operating, DHW heating active
Commissioning | 17
6 720 819 669 (2016/05)