Roth BW/H Komfort HE, Руководство для специализированного ремесленника

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43
en
Note:
For the overpressure monitoring function, on always is at least 0.1
bar higher than off. The corresponding adjustment ranges will automat-
ically adapt to that.
Low pressure
If the system pressure falls below the adjustable switch-on value on, an error
message will appear.
If the Shutdown option has been activated for the low pressure monitoring func-
tion, the solar system will be shut down as well in the case of a fault condition.
When the pressure reaches or exceeds the adjustable switch-off value off, the
system is switched on again.
Note:
For the Low pressure monitoring function,off always is at least 0.1 bar
higher than on. The corresponding adjustment ranges will automatically
adapt to that.
8.3 Function control
Note:
Only if the installer code is entered (see page 67), will the Function
control menu be available.
Solar / Function control
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
∆
T too high
∆
T monitoring option Yes, No No
Night circulation Night circulation monitoring option Yes, No No
FL/RL interchanged FL / RE interchange monitoring option Yes, No No
Store max. temp.
Maximum store temperature moni-
toring option
Yes, No No
Store Store sensor selection system dependent system dependent
∆
T monitoring
This function is used for monitoring the temperature difference. The message
∆
T
too high is shown if solar loading has been carried out for a period of 20 min with
a differential higher than 50 K. Normal operation is not aborted or inhibited, but
the system should be checked for the cause of the warning.
Possible causes are:
• pump power too weak
• hydraulic blockage of a system component
• circulation problems in the collector
• air inside the system
• defective valve / defective pump