Roth BW/H Komfort HE, Руководство для специализированного ремесленника

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Night circulation
This function can be used for detecting thermal circulation inside the solar circuit
that leads to an unwanted cooling of the store. A warning message will appear
when one of the following conditions has been detected for at least 1 min during
the period between 11 p.m. and 5 a.m.:
• collector temperature exceeds 40 °C
• the temperature difference exceeds
∆
Ton
The delay time of 1 min ensures that the message is not triggered by short-term
fault conditions.
Possible causes are:
• defective non-return valves
• defective valve
• wrongly adjusted time
Flow and return interchanged
This function is used for detecting an interchange of the fl ow and return pipe or a
badly placed collector sensor. For this purpose, the collector temperature is mon-
itored for plausibility during the switch-on phases of the solar pump. The message
FL / RE interchanged will appear, when the plausibility criteria have not been met
5 times in a row.
Maximum store temperature
This function is used for detecting and indicating if the adjusted maximum store
temperature has been exceeded. The controller compares the current store tem-
perature to the adjusted maximum store temperature, thus monitoring the store
loading circuits.
The maximum store temperature is considered exceeded when the temperature
measured at the store sensor exceeds the adjusted maximum store temperature
by at least 5 K. The monitoring becomes active again as soon as the store temper-
ature falls below the adjusted maximum store temperature.
In the Store channel, the store or stores to be monitored can be selected. A
possible cause for an unwanted exceedance of the maximum store temperature
is a defective valve.
8.4 Solar expert menu
Solar / Expert
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Flow sensor Flow sensor option Yes, No No
Sensor Flow sensor selection system dependent system dependent
Return sensor Return sensor option Yes, No No
Sensor Return sensor selection system dependent system dependent
Flow
sensor
Return sensor
Example of fl ow and return sensor positions
The Expert menu is only available when the installer user code has been entered.
In the expert menu, a fl ow and a return sensor can be selected and allocated. The
activated sensors are then used to detect the switch-off condition.
Note:
Because of the special hydraulics in systems with 2 collectors, this func-
tion will not work properly there.