Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Heating/cooling changeover 03.10.2011
27.2 Preselected operating mode input H/C
27.2.1 Changeover with operating mode selector
Main menu > Commissioning > Extra configuration > Heating/cooling ch'over >
Operating line Range Factory setting
Operation selector No, Yes No
The H/C changeover signal can be preselected in operating line "Preselection".
The current state is displayed in operating line "2-pipe heating/cooling system".
Main menu > Heating/cooling ch'over >
Operating line Range Factory setting
Preselection Auto, Heating,
Cooling
Auto
2-pipe heating/cooling system Heating, Cooling
Meaning:
Auto: Automatic operation by H/C changeover input or H/C by calendar.
Heating: Fixed preselection on heating
Cooling: Fixed preselection on cooling
27.2.2 Changeover by calendar
Main menu > Commissioning > Extra configuration > Heating/cooling ch'over >
Operating line Range Factory setting
Heating/cooling acc to calendar No, Yes No
Changeover is by date. After the date for heating start, "Heating" is active;
"Cooling" is active after the date for cooling start.
Main menu> Commissioning > Settings > Heating/cooling ch'over >
Operating line Range Factory setting
Start date heating Day – month 01.10.****
Start date cooling Day – month 01.05.****
27.2.3 Changeover with analog or digital input
Main menu > Commissioning > Extra configuration > Heating/cooling ch'over >
Operating line Range Factory setting
H/C changeover input ---, N.X1, N.X2, ... / ---
If an analog input signal is used to generate the changeover signal, two limit values
must be selected for changeover.
Configuration
Configuration
Setting values
Configuration