Do
Ins
May 18, 2011
Page 6 of 7
cument No. 129-497
tallation Instructions
Siemens Industry, Inc.
DIP Switch Settings
Switch
Number
Description Position
ON
(Factory Setting)
Position OFF
1
Fan control
Fan control is
temperature-independent
in Normal mode
Fan control is temperature-
dependent in Normal mode
2 Temperature
or
setpoint
display
Room (or return air)
temperature display
Setpoint display
RDF
10
U, an
d RDF
50.1
U
3
Operating action of
switch for external
operating mode
changeover
Changeover is activated
when switch is closed
(NO)
Changeover is activated
when switch is open (NC)
1
Fan control
Fan control is
temperature-independent
in Normal mode
Fan control is temperature-
dependent in all operating
modes
2 Temperature
or
setpoint
display
Room (or return air)
temperature display
Setpoint display
3
Operating action of
switch for external
operating mode
changeover
Changeover is activated
when switch is closed
(NO)
Changeover is activated
when switch is open (NC)
RDF
20
U
4
Electrical heater
Active in cooling mode
Inactive in cooling mode
1
Fan control
Fan control is
temperature-independent
in Normal mode
Fan control is temperature-
dependent in all operating
modes
2 Temperature
or
setpoint
display
Room (or return air)
temperature display
Setpoint display
3
Operating action of
switch for external
operating mode
changeover
Changeover is activated
when switch is closed
(NO)
Changeover is activated
when switch is open (NC)
RDF
30
U
4
Output sequence
Heating and cooling (four-
pipe)
Two-stage cooling