Buderus Logamatic 4323 Service Instructions

Modules and their functions
5
Logamatic 4323 - Subject to technical modifications.20
5.5 FM442 function module (accessory)
The FM442 module regulates two independent heating
circuits with mixer. Several of these modules can be
used in one control unit.
The switches on the module only have service and
maintenance functions and only affect 230 V outputs.
If the switches are not set to automatic, a corresponding
message appears on the MEC2 programming unit, and
the fault indicator
illuminates.
The control functions remain operational in manual
mode.
Heating circuit function
Heating circuit switch
e.g. for heating circuit 1 and 2
The positions 0 and (manual mode) are special
settings reserved for heating contractors only.
Current functions are indicated by LEDs.
Fig. 14 FM442
Display General fault, e.g. on-site fault, sensor
fault, external fault, wiring fault,
internal module fault, manual mode.
Fault messages appear as plain text
on the MEC2 programming unit.
LEDs for the following functions:
Display "Mixer opens" (hotter)
Display "Mixer closes" (colder)
Display Heating circuit in summer mode
Display Heating circuit pump operational
USER INFORMATION
Never use the switches to shut down the
heating system during temporary absence.
Use the holiday function for this purpose
(
Æ operating instructions of the Logamatic
4323 control unit).
USER INFORMATION
In standard mode, set the switches to
"AUT".
The heating circuit pump is switched on.
The
mixer is switched volt-free and can
be
manually operated.
AUT: The heating circuit operates in automatic mode.
0: The heating circuit pump is switched off. The
mixer is switched volt-free. The control functions
continue to be active.
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Buderus Logamatic 4323 Specifications

General

Brand	Buderus
Model	Logamatic 4323
Category	Control Unit
Language	English