Modules and their functions
9
Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
76
DHW function
DHW switch
The positions 0 and manual (3) are special settings
reserved for heating contractors only.
LEDs indicate the current functions.
for primary circuit:
for secondary circuit:
USER INFORMATION
In standard mode, set the switch to "AUT".
WARNING!
RISK OF SCALDING
In manual mode you are at risk from
scalding.
z Always open the cold water tap and
mix with hot water according to
requirements.
: The secondary/primary pump is switched on.
The mixer is switched to zero volt and can be
manually operated.
AUT: The DHW primary system operates in automatic
mode.
0: The primary and secondary pumps and the DHW
circulation pump are switched off.
The mixer is switched to zero volt. The control
functions continue to operate.