Basic Documentation

103/256
Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 8 Main controller and primary controller 2017-09-29
t
t
3133D01
TFlSetpt
TFlSetpt
Maximum i
ncrease =
∆TFlSetpt
∆t
t
Time
∆t
Unit of time
TFlSetpt
Flow temperature setpoint
∆TFlSetpt
Rate of setpoint increase per unit of time
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
limitation 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
3133S76
3133S77
Y1
B1
M1
B7
Primary controller
Main controller
Minimum limitation of the return temperature is not supported.
Limitations of the return
temperature
Response of main pump
/ system pump in the
event of locking signals
Settings
Return sensor
Note