Adisa ADI CD 375, Technical Manual Of Installation, Use And Maintenance

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ADI CD boiler - Technical Manual
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11. CONTROL OF SEVERAL BOILERS – CASCADED SYSTEM
In an installation with several boilers it is important that the power generated by the boilers adapts at any moment
to the demand of the installation, always optimizing the generators’ efficiency.
MASTER BOILER CONTROL
SLAVES BOILERS CONTROL
CASCADE COMMUNICATION BUS
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11.1 Boilers sequence included
When there are several boilers supplying the same installation, the boiler LMS control unit is able to make a
sequence up to 16 boilers equipped with this controller.
The boiler with device address 1 assumes the role of the
cascade master. It activates the required functions and shows the additional menus with the parameters for use
with the cascaded system.
LPB
Line nr. Function Value
6600 Device address 1 (Master) - 2…16 (Slaves)
Once the LPB bus is connected between the different boilers of the cascade, any message, error or diagnostic of
the cascaded system is shown in the Master display. The sequence control unit, Master of boilers, allows
evaluating the demand of the installation and regulating the boilers according to a strategy of selection. This boiler
has all the logic control of cascaded system and also regulates the stop/start sequence of each boiler according to
the demand of the installation. It is necessary to connect a temperature sensor in the hydraulic collector or inertial
tank (inmersion sensor model QAZ36 of ADISA Price List).
Configuration
Line nr. Function Value
5930 Sensor input BX1 Common flow sensor B10
5931 Sensor input BX2 Cascade return sensor B70
For each boiler:

Add an additional module OCI345.06/101 (consult the current pricelist) of communication bus type LPB

Connect the additional module to the boiler control unit, by means of the bus cable included in the OCI345 (see
the photo attached)

Make a serie between each OCI345 of the boilers connecting (DB – LPB data bus and MB – LPB ground).