Automatic Heating BCM, Руководство по эксплуатации

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7.4.3 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
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
(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.
BCM
2 Postion ON/OFF
Switch
I
(1b)
(See NOTE 1 Below)
O
(0)
(See NOTE 2 Below)
II
(1a)
(See NOTE 3 Below)
The BCM is the Gate-way for Mo-
dbus and external control. The E8
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
does not control the boiler and
the BCM
will take over the boiler
if the Modbus signal fails.
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
DO NOT USE
BCM 3 Position Switch (Equivalent Terminal in Modulex Wiring Diagram)
DO NOT USE
O (OFF)
I (ON)
Figure 1-8. Location of 2-Position and 3-Position Switches
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