15
4
Safety temperature limiter (STB)
The safety temperature limiter disconnects the burner if
none of the control devices are working. Automatic re-
connection of the burner is not possible. In case of STB
safety temperature limiter release, remove the screw cap
and push the button beneath it.
5
Fault warning light STL
6
Boiler water temperature indicator
7
Boiler temperature control
Provides non-stepped control of boiler advance
temperature. Temperature can be set between 30º C and
90º C.
When a rapidomatic heating circuit control is installed,
stage 1 of the boiler temperature control should be set at
90ºC.
8
Installation possibility for rapidomatic
heating circuit control
The control panel circuit board is equipped with a delay-ed-
action 6.3 amp. fuse.(Fig. 7). Ensure that control panel is
dead before replacing the fuse (pull the mains plug). The
control panel can be opened by loosening the screws next
to the plug connection. The fuse can now be changed and
the boiler returned to operation pump auto/man switch after
closing the control panel again.
