Siemens RDF20U Bedienungsanleitung

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

M1 Y1

IIIIII

8D1 GND

42101112

B2B1

Figure 1. RDF10U.

TH0897R1

S1B1

III III

39 8 D1GND

42101112

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

M1 Y1

III III

39 8 7 D1GND

42101112

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

M1 Y1

III III

723D1

Siemens Industry, Inc. Page 3 of 7

101112

Figure 4. RDF50.1U.

T F

QAH11.1

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

QAH11.1

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

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

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 ( )

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

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

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