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Siemens
Room Unit for Boiler Control
CE1U2283en
Building Technologies
Commissioning
2015-09-16
3 Commissioning
Prior to commissioning the controller, make the following checks:
·
Correct mounting
·
Correct connection to OpenTherm bus
·
Enduser parameters are set as required
·
Heating engineer parameters are set in compliance with plant requirements
At first power up or after a long off period (no power supply), "
CLOW
" is displayed
on the LCD for some minutes.
During this first period it is not possible to visualize or change parameters, the
other functions are running. After some minutes a minimum back-up time is
reached and the full functionality is available
3.1 Operational
faults
No display on the room unit:
Is the heating plant's main switch turned on?
·
Are the fuses in order?
·
Check the wiring
·
Boiler controller
Does boiler control really have to operate?
·
Press boiler control’s lock-out reset button
·
Check wiring and fuse of boiler control
·
Check the communication link to boiler control
The room temperature does not agree with the required temperature level:
·
Does the room temperature setpoint agree with the required temperature level?
·
Is the required operating mode indicated?
·
Are weekday, time of day and the displayed heating program correct?
(Info displays)
·
Has the heating curve slope been correctly set?
·
Check wiring of outside sensor
·
Has the "Nominal room temperature setpoint" with the "Parallel displacement of
the heating curve" been calibrated based on the effective room temperature?
·
Check boiler control
D.h.w. is not being heated:
·
Has the button for d.h.w. heating been pressed?
·
Check setpoint of the d.h.w. temperature
·
Check d.h.w. function of boiler control
Prerequisites
Room unit
Boiler control does not
switch on
Room temperature
D.h.w.
