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Chilled Ceiling And Radiator 4-pipe (clc02); Configuration And Parameterization - Siemens Desigo RXB Technical Manual

Technical manual.
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Notes
Notes
92/140
Siemens
Building Technologies
• For dewpoint monitoring, a logic OR operation is applied to the locally connected
sensor and the bus sensor.
• The result is used in the alarm object room dewpoint alarm output on the bus (see
10.13).
• When parameterizing, note whether the contacts are NO or NC (see page 102).
• Note the following for master/slave configurations:
– Dewpoint sensor on master:
The sensor is evaluated locally
This information is transmitted to the slaves.
– Dewpoint sensor on slave:
The sensor is evaluated locally
This information is NOT transmitted to the master and further slaves..
• The controller immediately queries the dewpoint alarm input following a reset
(if configured accordingly and provided a dewpoint is integrated).
8.3

Chilled ceiling and radiator 4-pipe (CLC02)

The applications for chilled ceiling and radiator (4-pipe) each have a continuous heating
and cooling sequence. The room controllers operate with a PI algorithm optimized for
thermal or motorized valve actuators. (For simplicity, the diagram below only shows the
P-control action.)
The control sequences come into operation at the effective setpoints for heating and
cooling (see page 67).
Y [%]
H
100
YH
YC
0
SpH
SpC
8.3.1

Configuration and parameterization

Configure the chilled ceiling as described in section 8.1.
Configure the radiator as described in section 8.1.5.
• For CLC02, no electromechanic actuators are permitted due to load. (FNC: 10, 12,
18)
• Also, thermal valves cannot run parallel operation of Y1 / Y2 and Y3 / Y4.
RXB (KNX) Applications library
Control sequences
cooling valve closes.
cooling valve closes.
80257
C
Y
Output signal
TR
Room temperature
SpH
Effective heating setpoint
SpC
Effective cooling setpoint
H
Heating sequence
C
Cooling sequence
YH
Heating valve
YC
Cooling valve
TR [°C]
CLC and RAD description of functions for CC-02 CM110384en_03
28 Feb 2009

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