ADI LT boiler – Technical manual
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11.6.3 External control unit regulating and optimizing all the boilers’combined operation.
When there are several boilers supplying the same installation, the control units type RVS 63,…, enable to
realize a sequence up to 15 boilers equipped with the LMU control unit.
The sequence control unit allows evaluating the demand of the installation and regulating the boilers according
to a strategy of selection.
The communication bus LPB allows visualizing on the display of the sequence control unit RVS any error or
message coming from one of the boilers connected.
a) Add to each boiler:
•
An additional module “Clip-in” (consult the current pricelist) of communication bus type LPB, module OCI
420
•
A cable for connecting the additional module to the boiler control unit, mod. AGU2.104A109.
The Official Technical Service must realize a change in the internal parameters, in order to use this regulation
on the boiler.
The additional module OCI 420 must be connected to the LMU control unit of each boiler.
Clipin
OCI420
LMU
Just one module type OCI420 can be
connected to the boiler control unit LMU,
but there can be a total of 2 different
modules.
The module OCI420 must be connected to
the boiler control unit LMU by connecting
the cable (ref. AGU2.104) to the terminal
X40 (see electric diagrams)
Connect the cables (normal electric cable)
to the terminals 1 and 2 of the strip X41-01
of the module OCI420, in order to connect
the sequence control unit RVS 63 (or
another control unit) and so realize the
connection by bus LPB.
Connecting cable
Front and lower
view of the
“clipin”
