Connection To A Ems Heat Source; Connection Via The Modbus Interface; Connection To Other Control Units In The 8000 Series Or To A Network; Connection Of Modules - Bosch Control 8313 Service Instructions For Contractors

Installation
5.5.2

Connection to a EMS heat source

NOTICE:
Material damage due to incorrect connection!
When connecting EMS heat sources:
▶ Remove jumper at the external interlock terminal.
▶ Only connect safety equipment directly at the EMS boiler.
EMS heat sources have their own basic control (control panel,
e.g. BC10). The SAFe is connected to the control of the heat source.
If a plant control system is installed, it is superordinate to the control of
the heat source.
The user interface of the control unit and the basic control
(control panel) of the heat source are directly connected.
Connections:
• On the back of the user interface at the EMS terminals
( Fig. 4, [4], page 9) with
• Basic control of the heat source at the (EMS)-BUS terminals
When connecting a boiler via the EMS terminals:
▶ Remove jumper at the external interlock terminal.
The external interlock connection has no function in conjunction
with EMS boilers!
▶ External safety equipment that lead to blocking must be connected
to the EMS boiler directly.
5.5.3

Connection via the Modbus interface

For heat sources (e.g. CHP module) that are connected via the
Modbus-RTU ( Fig. 4, [3], page 9):
▶ Connect communications cable to the Modbus-RTU connection.
▶ Consider connection to the heat source.
To avoid vagabond voltages:
▶ Only connect cable shield to one control unit!
5.6 Connection to other control units in the 8000 series
or to a network
The connection options are presented in  Chapter 16.1, page 37.
5.7

Connection of modules

Mains voltage
The 230 V power supply must be ensured for modules fitted at slots
1...4 via a plug-in connector on the power supply module. The modules
supply voltage to one another via additional plug-in connections.
If voltage is not supplied to the module or its 230 V components
(e.g. because the plug-in connector has not been inserted), the
components assigned to this module are not switched on (e.g. pumps).
This malfunction cannot be detected at the user interface itself as the
display and control functions are independent of the 230 V voltage.
10
5.8 Connection of safety equipment and the FM-SI
module
SAFe heat source
If a boiler with SAFe burner control unit is being connected, the EMS
connection has no function!
▶ Connect safety equipment or a condensates neutraliser at the FM-SI
module.
▶ Close unused SI inputs with a jumper.
When using a condensate neutraliser:
▶ Connect condensate neutraliser to SI1 input.
EMS heat source
Use of the FM-SI with EMS heat sources is not permitted if the heat
source is connected via the EMS terminal ( Fig. 4, [4], page 9).
▶ Connect external safety equipment directly to the control of the heat
source (terminal SI 17, 18).
▶ Always connect safety equipment that shuts down the heat source to
the basic control of the heat source (EMS control).
If EMS heat source was selected in the setting:
▶ Open the safety chain (terminal SI 17, 18) at the ZM5313
without fail.
▶ Do not install a jumper!
If safety equipment is connected, a jumper is installed or a Sl module is
inserted at the ZM5313, a fault display is generated.
5.9

Remote control

If a remote control is provided for the heating circuit, this must be
connected to the BF terminals. The remote control is assigned to the
corresponding heating circuit via the coding switch in the remote
control.
5.10

Other connections

Other connections may need to be established, depending on the
function of the modules.
▶ Observe documents and connection diagrams of the installed
modules!
UM10 function module
A UM10 must not be installed in a heating system if the heat source is
activated via the ZM5313. The ZM5313 takes over the UM10
functionality.
Control 8313 – 6720859567 (2017/03)