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Building Technologies
Boiler Sequence Controller RMK770
CE1P3132en
HVAC Products
10 Heating circuit control
23.04.2009
Number
Text (as supplied)
Effect
2521
[Heat circuit pump]
overload
Nonurgent message. Acknowledgement can
be parameterized; factory setting: ”Acknowl-
edgement“
2522
[Heat circuit pump B]
overload
Nonurgent message. Acknowledgement can
be parameterized; factory setting: ”Acknowl-
edgement“
2523
[Heat circuit pump] no
flow
Nonurgent message; must be acknowl-
edged and reset
2524
[Heat circuit pump B] no
flow
Nonurgent message; must be acknowl-
edged and reset
2525
[Heating circuit pump]
fault
Urgent message, must not be acknowl-
edged, plant stop
10.12 Diagnostic choices
Main menu > Heating circuit > Inputs/setpoints
Operating line
Adjustable values / remarks
Composite outside temp
…°C
Attenuated outside temp
…°C
Actual value flow temp
…°C
Flow temperature setpoint
According to section 10.6 “Mixing valve
control“ (load control considered)
Room sensor temp.
…°C
Actual value room temp
…°C
[Room temperature 1] bus
…°C
[Room temperature 2] bus
…°C
Room temperature model value
Current room temp setpoint
…°C; according to user’s preselection,
current room operating mode and interven-
tions
Economy increase
Inactive / Active
Room setpoint absolute
…°C
Room setpoint relative
…°C
Actual value return temp
…°C
Return temperature max
…°C
Room operating mode
…°C
Timer function
[Heating circuit pump] overload
0 / 1 (1 = overload)
[Heat circuit pump B] overload
0 / 1 (1 = overload)
Flow signal pump
0 / 1 (0 = no flow)
Optg hours pump
0…99999 h
Optg hours pump B
0…99999 h
Room operating mode
0 / 1 (1 = preselected operating mode)
Timer function
0 / 1 (1 = timer function)
Special day input
0 / 1 (1 = switching program according to
special day is active)
Holiday input
0 / 1 (1 = operation according to holiday
settings)
When making diagnostics or the wiring test, logic states are displayed. The input is
active when 1 appears on the display. If “Normal position open“ is selected, this is the
case when the contact is closed; if “Normal position closed“ is selected, this is the case
when the contact is open.
Fault heating
circuit pump
Inputs/setpoints
