Siemens Synco 700 Series - Heat Request Modulating; Heat Request 2-Position

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Building Technologies Boiler Sequence Controller RMK770 CE1P3132en
HVAC Products 6 Boiler sequence management 23.04.2009
The three 2-position heat requests differ in the type of heat request.
Depending on the selection of the boiler sequence operating mode (… > Main menu >
Boiler sequence manager > Boiler sequence optg mode > Preselection), either all 3 types are
evaluated or only individual ones.
Boiler sequence optg mode
Off Only the frost input is considered
Summer operation Generation of maximum value from the DHW and frost
inputs
Auto Generation of maximum value from all 3 inputs
6.5.1 Heat request modulating
Heat demand can be predefined with a DC 0…10 V signal.
The signal can be matched to the DC 0…10 V signal source:
Main menu > Commissioning > Settings > … or
Main menu > Settings > Boiler sequence manager > Heat request
Operating line Range Factory setting
[Modulating] setpoint at 0 V
–150…50 °C 0 °C
[Modulating] setpoint at 10 V
50…500 °C 100 °C
[Modulating] limit value
0…140 °C 10 °C
DC 0...10 V
02 46 810
-20
0
20
40
60
80
100
120
°C
2
3
3131D14
c Value in °C at DC 0 V
d Value in °C at DC 10 V
e Limit value for heat demand (temperatures below this level are interpreted as “no heat demand”)
6.5.2 Heat request 2-position
Main menu > Commissioning > Settings > … or
Main menu > Settings > Boiler sequence manager > Heat request
Main menu > Settings > Primary controller > Heat request
Operating line Range Factory setting
[2-pos] setpoint DHW 0…140 °C 70 °C
[2-pos] priority DHW None [DHW request] /
Shifting [DHW request] /
Absolute [DHW request] /
None [max selection] /
Shifting [max selection]
Shifting [DHW
request]
[2-pos] setpoint frost prot 0…140 °C 70 °C
Settings