Fan Speeds And Control - Siemens Desigo RXB Technical Manual

Technical manual
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HandyTool
Parameter (see 9.2.1 ff)
Fan speed
Fan control
Temperature sensor B1
Minimum on time
Fan overrun time
Periodic fan kick Comfort
Periodic fan kick Economy
Parameter
Fan speeds
External
fan control
1-speed
2-speed
3-speed
114/166
Siemens
Building Technologies
Select Fan control:
See Parameters in the last column of the table below
Basic setting
3-speed
Auto
6 min
1 min
OFF
OFF
1) HandyTool: 90 min / 360 min = OFF
9.2.1

Fan speeds and control

The following settings can be selected:
Description
No influence on fans by controller or room unit.
The fan is e.g. operated manually at the fan coil.
The controller switches on relay Q14 in operating state Comfort , thus
allowing for enabling fan operation.
Note!
• For safety reasons, this setting is not possible for applications with
electric heating coils or reheaters.
• For other operating states but Comfort , the fan is enabled by the
fan algorithm.
Single-speed fan control with relay Q14.
Two-speed fan control with relays Q14 and Q24.
Three-speed fan control with relays Q14, Q24 and Q34.
RXB (KNX) application library
Fan control
Range
(see below)
Manual, Auto
See 7.1.2
1 ... 10 min
1 ... 10 min
0 ... 89 min ; Off
0 ... 359 min ; Off
FNC Description of functions for FC-10, FC-11, FC-12
9.2.1
9.2.2
7.1.2
9.2.4
9.2.3
Resolution
HandyTool
*094
*093
1 min
*095
1 min
*098
1 min
*096 1)
1 min
*097 1)
HandyTool
*094
0
1
2
3
CM110385en_05
28 Feb 2009

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Desigo rxc, desigo rxb, desigo rxl, desigo rxa

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