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Building Technologies
Boiler Sequence Controller RMK770
CE1P3132en
HVAC Products
10 Heating circuit control
01.03.2005
10.9.4 Pump kick and valve kick
The pump kick is a protective function that is carried out periodically. It prevents pumps
and / or actuators from seizing after longer off periods.
10.10 Heat demand
The internal heating circuit can be connected directly to the main distributor or after the
primary controller (if present).
This can be parameterized with the following setting:
Main menu > Commissioning > Extra configuration > Heating circuit > Heat req heat circ
Operating line
Range
Factory setting
Heat req heat circuit acting on
Main distributor /
Primary controller
Main distributor
T
T
T
T
T
T
31
3
2S
7
2
1
2
Heat requisition
heating circuit:
Primary Controller
Heat requisition
heating circuit:
Main distributor
The temperature requisition for the current heat demand is calculated based on the flow
temperature setpoint of the heating circuit (refer to subsections 10.6.2 “Heating curve”
and 10.6.3 “Influences on the flow temperature setpoint”) plus an adjustable setpoint
increase for the mixing valve.
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Heating circuit > Controller
Operating line
Range
Factory setting
Setp increase mixing valve
0…50 K
10 K
Setpoint increase mixing valve is used to define by what amount the temperature requi-
sition (to the boiler or the primary controller) shall be raised against the flow tempera-
ture setpoint.
10.11 Error handling
As soon as commissioning is completed (by quitting the “Commissioning” menu), a
check is made to see if the configured sensors are connected. In the event of an open-
circuit or short-circuit, a fault status message will be delivered.
The RMK770 has maximum 1 heating circuit. Index 1 indicates that the sensor error
occurred in connection with this heating circuit.
Number Text
Effect
50
[HC 1] error flow
sensor
Nonurgent message; must be acknowledged
Setpoint increase mixing
valve
Sensor error flow tempera-
ture