z Push the lever or key (depending on the type of STB) back with a
screwdriver or similar device and hold until the high limit safety cut-out has
triggered (Fig. 5).
Terminating or exiting the test
z To reset the manual reset high limit, remove the cover on the STB and press
the reset button located beneath it (Fig. 6).
Fig. 5 Triggering the manual reset
high limit
Item 1: Key
Item 2: Lever
Press "AUT".
Reattach the dial and turn it to the "AUT" position.
Fig. 6 Remove the STB cover.
Item 1: STB cover.
AUT
90
70
60
50
I
0
1...7
Tag Zeit Temp
Urlaub Auswahl So/Wi
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PROG
1
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 15
5
Checking the manual reset high limit (STB)
z Remove the dial on the boiler water thermostat (Fig. 4).
Fig. 4 Remove the dial on the
boiler aquastat.
160
AUT
180
140
120