Siemens RDF20U User manual

Installation Instructions
Document No. 129-497
May 18, 2011
RDF Series Room Temperature
Controllers
Item Number 129-497, Rev. BA Page 1 of 7
Product Description
Room Temperature Controllers with LCD for two-
pipe (with and without an electrical heater) and four-
pipe fan coil units.
Product Numbers
Part Number Application
RDF10U Two-pipe fan coil units
RDF20U Two-pipe fan coil units with
electrical heater
RDF30U Four-pipe fan coil units
RDF50.1U Two-pipe fan coil units with 0 to 10
Vdc output
Required Tools
•Small, flat-blade screwdriver
•Wire strippers
•Electric drill
Expected Installation Time
30 minutes
Accessories
•141-570 Lockable Thermostat Guard
•ARG70 Wall Plate Adapter
•QAH11.1 Remote/Changeover Sensor
Installation
Step 1. Loosen retaining screws.
Step 2. Remove controller housing.
Step 3. Mount base plate to wall.
Step 4. Remove screw and open terminal cover.

Document No. 129-497
Installation Instructions
May 18, 2011
Installation, Continued
Step 7. Replace controller housing.
Step 5. Terminate wires (see wiring diagrams),
close cover terminal cover and replace screw.
Step 8. Tighten retaining screws.
Step 6. Set DIP switches. The installation is now complete.
Wiring Diagrams
B1 Remote temperature sensor
B2 Changeover sensor
E1 Electric heat
M1 Three-speed fan motor
S1 Digital input for day/night changeover
Y1 Control valve, heat/cool or two-pipe system
Y2 Cooling control valve for four-pipe system
TH0899R1
S1
M1 Y1
IIIIII
SN
SP
SN
1
37 8D1 GND
42101112
N1
9
B2B1
5
Figure 1. RDF10U.
TH0897R1
S1B1
M1
Y
1
III III
SN
SP
SN
1
39 8 D1GND
42101112
N1
Y
2
6 5
Figure 2. RDF30U.
Terminal
Position RDF10U and RDF30U Terminal Function
1 Operating voltage 24 Vac
negative
2 Operating voltage 24 Vac
negative
3 Operating voltage 24 Vac
positive
4 Heating/cooling output NO
5 Heating/cooling output NC
6 Second stage Heating/Cooling
output NO (RDF30U only)
7 Heat/Cool changeover sensor
(RDF10U only)
8 Measuring Neutral, remote or
changeover sensor
9 Remote air sensor
10,11, 12 Fan Speed output III, II, I
D1,
GND Signal input for potential-free
operating mode changeover
switch
Page 2 of 7 Siemens Industry, Inc.

Document No. 129-497
Installation Instructions
May 18, 2011
S1
B2
B1
M1 Y1
III III
SN
SP
SN
1
39 8 7 D1GND
42101112
N1
E1
65
TH0901R1
Figure 3. RDF20U.
Terminal
Position RDF20U Terminal Function
1 Ground for control signal
2 Operating voltage 24 Vac
negative
3 Operating voltage 24 Vac
positive
4 Heating/cooling output NO
5 Heating/cooling output NC
6 Electric heater output NO
7 Heat/Cool changeover sensor
8 Measuring Neutral
9 Remote air sensor
10,11, 12 Fan speed output III, II, I
D1,
GND Signal input for potential-free
operating mode changeover
switch
TH0896R1
S1
B2
M1 Y1
III III
SN
SP
SN
5
723D1
Siemens Industry, Inc. Page 3 of 7
G
16
N1
101112
ND
B1
4
Figure 4. RDF50.1U.
3
2
T F
3
2
3
2
T
3
2
QAH11.1
T F
T F
TH0890R1
Figure 5. RDF50.1U.
Terminal
Position RDF50.1U Terminal Function
1 0 to 10 Vdc output for valve
2 Heat/Cool changeover sensor
3 Measuring neutral
4 Return air sensor
5 Operating voltage 24 Vac,
negative
6 Operating voltage 24 Vac,
negative
7 Operating voltage 24 Vac
positive
10,11,12 Fan speed output III, II, I
D1,
GND Signal input for potential-free
operating mode changeover
switch
T F
7
8
7
8
7
8
T7
8
QAH11.1
T F
T F
TH0900R1
Figure 7. RDF10U, and
RDF20U.

Document No. 129-497
Installation Instructions
May 18, 2011
Dimensions
TH0871R1
4.33 (117)
3.78 (96) 1.38
(35)
Figure 8. RDF Controller Dimensions in Inches (mm).
60%% 4






 





  










Figure 9. Base Plate Dimensions.
Operating Instructions
Normal Operation
The +/- buttons allow you to increase or
decrease the current room temperature
setpoint in steps of 1°F (0.5°C).
To do this, proceed as follows:
•Press and hold or once.
The setpoint display starts flashing.
•Press the buttons again to change the
room temperature setpoint in the range
41°F to 95°F (5°C to 35°C). The new
temperature setpoint will automatically
be stored 10 seconds after the last
adjustment is made. The display will
then stop flashing.
Changing from Heating to Cooling Mode
/
Automatic changeover
Display shows that heating valve is open
Display shows that cooling valve is open
Selecting the Three Fan Speeds with the Operating
Mode Selector
High
Medium
Low
Changing from Heating or Cooling Mode to Standby
/
With all RDF types, the operating mode
selector is used to manually change from
Heating or Cooling mode to Standby .
In Standby , all controller types maintain the
adjusted lower heating setpoint P03 or higher
cooling setpoint P04.
Changing from Normal Operation to Economy Mode
/
Changeover from normal operation to Economy
mode takes place automatically via an external
contact (window switch/remote operation switch,
etc.).
Display shows normal operation.
Display shows Economy mode.
Page 4 of 7 Siemens Industry, Inc.

Document No. 129-497
Installation Instructions
May 18, 2011
Economy Mode
Siemens Industry, Inc. Page 5 of 7
If you want to change the factory-set
temperature setpoints (61°F [16°C] for heating
and 82°F [28°C] for cooling), see Changing the
Control Parameters and Commissioning.
Important:
The Economy mode setpoint can be set to 0.
This means OFF so that the controller is not
active in Economy mode and symbol will not
appear.
CAUTION:
When turned OFF, the controller will not provide
valve control, which could result in freeze
conditions.
4.Press the + and – buttons simultaneously,
to show the current value of the selected
parameter, which can be changed by
repeatedly pressing the + or – button.
5.Press buttons + and – simultaneously
again or wait 5 seconds after the last
press of a button, to display the last
parameter.
6.If you wish to display and change
additional parameters, repeat steps 3
through 5.
7.All changes will be stored 10 seconds after
the last display or setting.
8.Switch to normal operation with the
operating mode selector.
Changing the Control Parameters Recalibrating the Sensor
To optimize the control performance, a number of control
parameters can be adjusted. Adjustments can be made
during operation without opening the controller.
If the room temperature displayed by the controller does
not agree with the actual room temperature, the
temperature sensor can be recalibrated by changing
parameter P09.
NOTE: For factory settings, see Commissioning
See Changing the Control Parameters and
follow steps 1 through 3 to select parameter
P09.
With step 4, the room temperature displayed
can now be matched to the actual room
temperature. Each push of the + or – button
changes the temperature by +/– 1°F (0.5°C)
up to a maximum of +/- 5.5°F (3°C).
With step 7, the recalibration is automatically
stored 10 seconds after the last readjustment.
To change the parameters for:
•Setpoints for independent heating and cooling in
Economy mode
•Setpoints for independent heating and cooling in
Standby mode
•Upper and lower limit stops in Normal mode
•Heat/cool changeover points
•Sensor calibration
•Heat/cool switching differentials
•Fan control
•Dead zone between heating and cooling
(RDF30U),
proceed as follows:
1.Set operating mode selector to Standby.
2.Press the + and – buttons simultaneously
for a minimum of 3 seconds and a
maximum of 5 seconds. Release them and
within 2 seconds, press the + button again
for 3 seconds. The display will show “P01”.
3.Select the required parameter by
repeatedly pressing the + or – button:
P01 P02 P20 P23
--
3055z01

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)
1Fan 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
1Fan 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

Document No. 129-497
Installation Instructions
May 18, 2011
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Teflon is a registered
trademark of DuPont. Product or company names mentioned herein may be the trademarks of their respective owners. © 2011 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
+ 1 847-215-1000
Your feedback is important to us. If you have comments about this document,
please send them to [email protected]
Commissioning (by qualified HVAC Installer)
Para-
meter Controller’s parameter factory settings: Default settings Setting range (all settings can be made in increments of 0.5°K) RDF10U RDF20U RDF30U RDF50.1U RDF60.1U
P01 Setpoint of heating in night setback (Economy) mode
(operating mode changeover switch activated) 61°F (16°C) OFF, 41°F to 68°F (5°C to 20°C)
P02 Setpoint of cooling in night setback (Economy) mode
(operating mode changeover switch activated) 82°F (28°C) OFF, 70°F to 95°F (21°C to 35°C)
P03 Setpoint of heating in Freeze Protection (standby) position 46°F (8°C) OFF, 41°F to 68°F (5°C to 20°C)
P04 Setpoint of cooling in standby position OFF OFF, 70°F to 95°F (21°C to 35°C)
P05 Minimum (lower) setpoint limit stop in normal mode 41°F (5°C) 41°F to WmaxNorm (5°C to
WmaxNorm)
P06 Maximum (upper)setpoint limit stop in normal mode 95°F (35°C) WminNorm to 95°F (WminNorm to
35°C)
Legend to table
P07 Heat/cool changeover switching point cooling 61°F (16°C) 50°F to 77°F (10°C to 25°C) X
P08 Heat/cool changeover switching point heating 82°F (28°C) 81°F to 104°F (27°C to 40°C) Adjustable: please record
all changes you make X
P09 Sensor calibration 0 (0 K) -3 K to +3 K (-5.5°F to 5.5°F) Not adjustable/display only
P10 Switching differential in heating mode *2 K (3.6°F) 1°F to 7°F (0.5 K to 4 K) x Not adjustable/no display
P11 Switching differential in cooling mode *1 K (1.8°F) 1°F to 7°F (0.5 K to 4 K)
Integration time 5 minutes 1 to 10 minutes XX X
P12 Dead zone in normal operation *2 K (3.6°F) 1°F to 18°F (0.5 K to 10 K) XXX
P13 Active temperature sensor (no setting, display only) - 1: room temperature sensor active
2: return air temperature sensor active
P14 Value of current room temperature reading (no setting, display only) - 32°F to 120°F (0°C to 49°C) = current temperature value
P15 Value of current heat-cool changeover temperature reading including indication of
current mode ( ,) (no setting, display only) - 100 = input open (no sensor connected, heating mode [ ]) 32°F
to 120°F (0°C to 49°C) = current temp. value
00 = input bridged, cooling mode ( )
X
P16 Purging function 0 minutes 0 minutes: not active
1 to 5 minutes active with selected duration X
P17 Fan control in energy saving mode
OFF: fan is off in the dead zone. ON: fan is on in the dead zone. OFF ON: running in selected speed or in speed one if in
standby position
Setpoint differential *2 K (3.6°F) 1°F to 9°F (0.5 K to 5 K) X X X
P18 Test mode for checking the actuator direction (note that this parameter can be quit
only if the setting is back at “---” and by pressing buttons + and – simultaneously) --- “---“ = no signal on outputs Y1 and Y2
OPE = output Y1 forced open
CLO = output Y2 forced closing X X X X
P19 Minimum out
p
ut on-time 1 minute 1 to 20 minutes
(
in increments of 1 minute
)
X X
P20 Minimum output off-time 1 minute 1 to 20 minutes (in increments of 1 minute) X X
P21 Fan overrun see list 0 to 300 seconds (in increments of 10 seconds) X (60s) (0 s) X X
P22 Point of reference for setpoint in Normal mode HA HA: heating sequence
CL: cooling sequence X X X
P23 Display unit of measurement °F°F
°C
* Note: This parameter is in degrees Kelvin, 1°K = 1.8°F).
Document No. 129-497 Printed in the USA
Page 7 of 7