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Document No. 129-497 
Installation Instructions 
May 18, 2011 

Dimensions 

TH0871R1

4.33 (1

1

7)

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. 

Summary of Contents for RDF10U

Page 1: ...pe 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 Loo...

Page 2: ...ur pipe system TH0899R1 S1 M1 Y1 I II III SN SP SN 1 3 7 8 D1 GND 4 2 10 11 12 N1 9 B2 B1 5 Figure 1 RDF10U TH0897R1 S1 B1 M1 Y1 I II III SN SP SN 1 3 9 8 D1 GND 4 2 10 11 12 N1 Y2 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...

Page 3: ...ND Signal input for potential free operating mode changeover switch TH0896R1 S1 B2 M1 Y1 I II III SN SP SN 5 7 2 3 D1 Siemens Industry Inc Page 3 of 7 G 1 6 N1 10 11 12 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 s...

Page 4: ...t 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 Heati...

Page 5: ... 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 t...

Page 6: ...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 contr...

Page 7: ...alibration 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 X X X P12 Dead zone in normal operation 2 K 3 6 F 1 F to 18 F 0 5 K to 10 K X X X P13 Active temperature...

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