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Building Technologies
Modular Heating Controller RMH760B
CE1P3133en
HVAC Products
8 Main controller and primary controller
05.02.2007
Refer to subsection 8.8.3 “Limitation of the return temperature”.
The respective setting determines whether or not the main pump or the system pump
shall respond to locking signals:
Setting
Effect when a locking signal occurs
Main pump locking signal = Off
Pump will be deactivated
Main pump locking signal = On
Pump will continue to operate
System pump locking signal = Off
Pump will be deactivated
System pump locking signal = On
Pump will continue to operate
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Main controller > Limitations
Main menu > Settings > Primary controller > Limitations
Operating line
Range
Factory setting
Flow temperature max
0…140 °C
140 °C
Flow temperature min
---- / 0…140 °C
---- °C
Flow temperature rise max
---- / 1…600 K/h
---- K/h
System pump locking signal
Off / On
Off
Frost protection for the plant
Off / On
On
8.8.3 Limitation
of
the
return temperature
Both the main controller and the primary controller offer maximum limitation of the
return temperature depending on the active consumers. The following types of limita-
tion are available:
•
Maximum limitation in space heating mode
•
Maximum limitation in DHW heating mode
Both have the following in common:
•
A return temperature sensor must be configured
•
Limitation of the return temperature is only possible with primary controller type 1
Maximum limitation of the return temperature with primary controller type 1:
Y1
B1
M1
B7
313
3S
76
31
3
3S
77
Y1
B1
M1
B7
Primary controller
Main controller
Minimum limitation of the return temperature is not supported.
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Main controller > Limitations
Main menu > Settings > Primary controller > Limitations
Operating line
Range
Factory setting
[Curvepoint 1] outside temp
–50…50 °C
–20 °C
[Curvepoint 1] return temp
---- / 0…140 °C
---- °C
[Curvepoint 2] outside temp
–50…50 °C
10 °C
[Curvepoint 2] return temp
---- / 0…140 °C
---- °C
DHW return temp max
---- / 0…140 °C
---- °C
Legionella return temp max
---- / 0…140 °C
---- °C
Limitations of the return
temperature
Response of main pump
/ system pump in the
event of locking signals
Settings
Return sensor
Note
Settings
