Buderus Logamatic 4122 User Manual

Modules and their functions
9
Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
72
9.2 FM441 function module (accessory)
The FM441 module regulates one heating circuit and
one DHW heating facility.
The switches on the module only have service and
maintenance functions and only affect 230 V outputs.
Only fit this module in the control unit once.
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. 21 FM441
Display General fault, e.g. on-site faults,
sensor faults, external faults, wiring
faults, internal module faults, 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 DHW in
night mode below the set temperature.
Display Heating circuit pump operational
Display - L Cylinder primary pump operational
Display - Z DHW circulation pump operational
Display Thermal disinfection enabled
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 for Logamatic
412x control unit).

Buderus Logamatic 4122 Specifications

General

Brand	Buderus
Model	Logamatic 4122
Category	Control Unit
Language	English