Siemens RDF20U Installation Instructions

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
RDF10U, and RDF50.1U
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)
RDF20U
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)
RDF30U
4 Output sequence Heating and cooling (four-
pipe)
Two-stage cooling

Siemens RDF20U Specifications

General

Brand	Siemens
Model	RDF20U
Category	Temperature Controller
Language	English