Buderus Logamatic 4323 Service Instructions

Modules and their functions
5
Logamatic 4323 - Subject to technical modifications.14
5.3 ZM433 central module
The ZM433 module regulates one feed pump to transfer
heat, in case of demand, from the external heat sources
to the heating system. This module also controls one
heating circuit with mixer.
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.
Fig. 7 ZM433
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 Feed or 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
For information regarding the sensor
connection, see Chapter
5.1.

Buderus Logamatic 4323 Specifications

General

Brand	Buderus
Model	Logamatic 4323
Category	Control Unit
Language	English