Automatic Heating BCM Manual de Instruções - Página 5
Procurar online ou descarregar pdf Manual de Instruções para Unidade de controlo Automatic Heating BCM. Automatic Heating BCM 15 páginas. Modulex boiler communications module
Imprimir página7.4.3 DISCONNECTING E8 FROM E-BUS ON
BCM BOARD.
The Modulex Boiler is shipped with the BCM factory-installed,
it will contain a 3-position switch mounted above the BCM
TABLE 1-1. 3 - POSITION BCM SWITCH FUNCTIONS
BCM
2 Postion ON/OFF
Switch
O (OFF)
I (ON)
NOTES:
1. DO NOT set the 3-Position Switch to Position I.
2. Set the 3-Position Switch to Position O ONLY
when controlling Boilers from an external
Controller via Modbus Communication.
3. Position II is the Default position for the 3-
Position Switch. Ensure it is set to this position
when it arrives from the Factory
BCM 3 Position Switch (Equivalent Terminal in Modulex Wiring Diagram)
I
(1b)
(See NOTE 1 Below)
The BCM is the Gate-way for Mo-
dbus and external control.The E8
DO NOT USE
does not control the boiler and
the BCM will not take over the
boiler if the Modbus signal fails.
The BCM is the Gate-way for Mo-
dbus and external control.The E8
DO NOT USE
does not control the boiler and
the BCM will take over the boiler
if the Modbus signal fails.
(Figure 7-8). Refer to the switch matrix in Table 7-1 for
descriptions of how the factory-installed 3-position switch
functions with respect to the 2-position ON/OFF switch on the
BCM.
O
(0)
(See NOTE 2 Below)
Figure 1-8. Location of 2-Position and 3-Position Switches
II
(1a)
(See NOTE 3 Below)
The E8 is the primary controller
and the BCM will allow monito-
ring through Modbus but will not
take over boiler if the E8 fails.
The E8 is the primary controller
and the BCM will allow monito-
ring but the BCM will take over
running the boiler if the E8 fails
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