User Manual

5
Siemens CB1N3066.2en
Smart Infrastructure 2019-10-25
WARNING
Wiring, protection
and earthing must be installed in compliance with local regulations.
No internal line protection for supply lines to external consumers (Q11, Q12, Q14 ).
Risk of fire and injury due to short-circuits!
● The AC 230 V mains supply line must have an external circuit breaker with a rated
current of no more than 10 A.
● Adapt the line diameters as per local regulations to the rated value of the installed
overcurrent protection device.
● Only use valves rated for AC 24…230 V.
●
Disconnect from supply before open
ing the cover.
Commissioning
After power up, the thermostat reset and all LCD segments flash, indicating that the reset is
successful. This takes about 3 seconds. Then, the thermostat is ready for commissioning by
qualified HVAC staff.
The control parameters of thermostat can be adjusted to ensure optimum performance of the
entire system (see “Parameter settings”).
Calibrating the sensor
If the displayed room temperature does not match the actual temperature, you can calibrate
the temperature sensor by modifying the parameter P07.
Setpoint and range limitation
For the purpose of energy saving, it is suggested to review the setpoints and setpoint ranges
(parameters P03, P05 and P06). Change the setpoint to suit your individual needs.
Control sequence
Only heating sequence is available.
Control sequence
T[°C] Room temperature SDH Switching differential “Heating”
W Room temperature setpoint Y Control output “Valve” or
“Compressor”
ON
The valve or compressor receives the OPEN command via control output Q14 when both of
the following conditions are met.
● The acquired room temperature lies by half the switching differential below the setpoint
(heating mode)
● Control output Q14 is not energized for more than the “Minimum output off time” (factory
setting: 1 minute)