SIEMENS

SIEMENS RDF800 Flush Mount Touch Room Thermostat Product Specifications Guide

SIEMENS RDF800 Flush Mount Touch Room Thermostat

Touch screen flush-mount standalone room thermostats

  • For 2-pipe, 2-pipe with electrical heater, and 4-pipe fan coil units For universal applications
  • For use with compressors in DX-type equipment
  • Touch screen
  • Large display with backlight
  • 2P / PI / P control
  • Outputs for ON/OFF or 3-position control
  • Outputs for a 3-speed or 1-speed fan
  • 2 multifunctional inputs for keycard contact, external sensor, etc.
  • Independent function for window contact, presence detector (standard presence and hotel presence)
  • Operating modes: Comfort, Economy and Protection
  • Automatic or manual fan speed control
  • Automatic or manual heating/cooling changeover
  • The minimum and maximum limitation of room temperature setpoint
  • Control depending on the room or the return air temperature
  • Adjustable commissioning and control parameters
  • AC 230 V operating voltage
  • RDF800, RDF800/VB: Mounting on the round box, with min 60 mm diameter or recessed square 86 mm box with 60.3 mm fixing centers and min 40 mm depth
  • RDF800/NF: Mounting on a recessed square 86 mm box with 60.3 mm fixing centers and min 40 mm depth, requires an additional mounting frame

Use

Room temperature control (heating or cooling) in individual rooms and zones by means of:

  • 2-pipe fan coil units
  • 2-pipe fan coil units with electrical heater
  • 4-pipe fan coil units
  • Chilled /heated ceiling
  • Chilled /heated ceiling and electrical heater
  • Chilled ceiling and radiator / underfloor heating
  • Compressors in DX-type equipment
  • Compressors in DX-type equipment with electrical heater

The room thermostats are delivered with a fixed set of applications. The relevant application is selected:

  • Local DIP switch and HMI

Functions

  • Room temperature control via built-in temperature sensor or external room temperature/return air temperature sensor
  • Changeover between heating and cooling mode (automatically via local sensor or manually)
  • Selection of applications via DIP switches
  • Selection of operating mode via touchscreen
  • 1- or 3-speed fan control (automatically or manually)
  • Display of current room temperature or setpoint in °C and/or °F
  • Minimum and maximum limitation of room temperature setpoint
  • Keylock function: unlock, total lock and setpoint
  • 2 multifunctional inputs, freely selectable for:
    • External room temperature or return air temperature sensor
    • Sensor for automatic heating / cooling changeover (RDF…)
    • Window contact
    • Dew point sensor (RDF…)
    • Electric heater enable (RDF…)
    • Fault input
    • Presence detector
  • Advanced fan control function, such as: fan kick, fan start delay, and selectable fan operation (enable, disable or depending on heating or cooling mode)
  • Purge function together with 2-port valve in a 2-pipe changeover system
  • Reminder to clean fan filters (adjust with P62)
  • Floor heating temperature limitation
  • Reload factory settings for commissioning and control parameters
  • Wizard function for easy commissioning via HMI

Note: The functional descriptions for the thermostat can be referred to the basic documentation P3174.

Applications

The thermostats support the following applications, which can be configured using the DIP switches on the inner side of the thermostat’s front panel.

Applications for fan coil systems

  • V1 Heating or heating/cooling valve actuator
  • V2 Cooling valve actuato
  • E1 Electric heater
  • B1 Return air temperature sensor or external room temperature sensor (optional)
  • B2 Changeover sensor (optional)
  • M1 3- or 1-speed fan

Applications for Universal systems

  • V1 Heating or heating/cooling valve actuator
  • V2 Cooling valve actuator
  • E1 Electric heater
  • B1 Return air temperature sensor or external room temperature sensor (optional)
  • B2 Changeover sensor (optional)
  • D3 Dewpoint sensor

Applications for heat pump systems

  • N1 Thermostat
  • E1 Electric heater
  • B1 Return air temperature sensor or external room temperature sensor (optional)
  • D3 Dewpoint sensor

Type summary

Product no.

Stock no.

Application

Operating voltage Control outputs

Suitable for

3-pos ON/OFF
RDF800 S55770-T396 Fan coil,

universal heat pump

AC 230 V 1 1) 2 1) Round or square conduit boxes EEU
RDF800/NF

2)

S55770-T397 Fan coil, universal

heat pump

AC 230 V 1 1) 2 1) Square conduit boxes 2)
RDF800/VB S55770-T451 Fan coil,

universal heat pump

AC 230 V 1 1) 2 1) Round or square conduit boxes EEU
  1. Selectable: ON/OFF or 3-position according to applications.
  2. Mounting frames are not included and must be ordered separately. See “Accessories”\

Ordering

  • When ordering, indicate the product number, SSN, and name.
  • For example: RDF800/NF (S55770-T397) room thermostat
    • RDF800 (S55770-T396) room thermostat
    • RDF800/VB (S55770-T451) room thermostat
  • A mounting frame must be ordered for RDF800/NF installation (See “Accessories”).
  • Order valve actuators separately.

Equipment combinations

Type of unit Product no. Data sheet
Cable temperature sensor or changeover sensor, cable length

2.5 m

NTC (3 kW at 25 °C)

 

QAH11.1

1840

Room temperature sensor NTC (3 kW at 25 °C) QAA32 1747
Cable temperature sensor, cable length 4 m

NTC (3 kW at 25 °C)

QAP1030/UFH

1854

Condensation / Dew point monitor

QXA2601 / QXA2602 / QXA2603 /

AQX2604

3302

Electromotor ON/OFF actuator SFA21… 4863
Electromotoric ON/OFF valve and actuator (only available in AP, UAE,

SA and IN)

MVI…/MXI…

A6V11251892

Zone valve actuators (only available in AP, UAE, SA and IN) SUA… 4832

ON/OFF actuators

Thermal actuator (for radiator valve) STP..21.. A6V12986007
Thermal actuator

(for small valves 2.5 mm)

STA..21.. A6V12986007

3-position actuators

Type of unit Product no. Data sheet
Electrical actuator, 3-position (for radiator valve) SSA31… 4893
Electrical actuator, 3-position

(for small valve 2.5 mm)

SSP31… 4864
Electrical actuator, 3-position (for small valve 5.5 mm) SSB31… 4891
Electrical actuator, 3-position

(for 2- and 3-port valves / V…P45)

SSC31… 4895
Electrical actuator, 3-position (for small valve 5.5 mm) SSD31… 4861
Electromotor actuator, 3-position (for small valves 5.5 mm)

SAS31…

4581

Note: For the maximal number of actuators in parallel, refer to information in the data sheets of the selected actuators and to this list, depending on which value is lower:

  • Parallel operation of max 6 SS… actuators (3-pos) is possible.
  • Parallel operation of max 10 ON/OFF actuators is possible.

Accessories

Designation Product no. / SSN Data sheet
Changeover mounting kit (50 pcs / package) ARG86.3 N3009
Single mounting frame, Ivory White (for RDF800/NF only) ARG800.1 / S55770-T370

Mechanical design

The thermostats consist of the following parts:

  • Front panel with electronics, operating elements and built-in room temperature sensor.
  • Mounting base with power electronics.
  • An additional mounting frame is required for RDF800/NF to complete the installation while RDF800 & RDF800/VB unit comes with its own mounting frame.

The rear of the mounting base contains the screw terminals. Slide the front panel in the mounting base and snap on.

Operation and settings
Display

 

 

Operational icons:
+ ̶ Increment, decrement OR selection
Selection OR move to next items
Temperature OR parameter values, and etc.

Parameter number OR password, and etc.

Time clock (12 / 24 hour) ( not valid for standalone versions)

Setpoint mode (temperature only)
Fan mode OR fan speed mode
Operating mode

Setting mode

Operations

Function

Touch to select setpoint value using +/–. mode; adjust temperature
Touch to select fan mode; adjust fan speed using +/ –.
Touch to select operating mode; select ON/ECO/OFF using +/ –.
Touch to select the INFO screen, display room using

if available.

to select the desired H/C control sequence using

+/– if manual H/C changeover (P01 = 2) is selected.

to display alarms if the icon is displayed; use

icon to select different alarms for viewing.

Touch for 5 seconds to select parameter mode (Service/Expert level).

Setting parameters using the local HMI

Wake up the thermostat by touching the screen display. Factory setting for the Service level password is 00 00.

Entering the Service level

  1. Touch and hold down the icon for 5 seconds. Then set the first 2-digit number to 00 using .
  2. Touch the last 2-digit number and set it to 00 using
  3. After 3 seconds, P (successful login) or F (fail to login) is displayed.
  4. If the login failed, reenter the correct password as per step 1 above. After successful login, the first parameter is displayed as shown in the following example:

Notes

  • Touch any icon to exit.
  • Touch to select any parameter and +/– to adjust values.
  • When reaching END, touch END to exit.

Entering the Expert level

  • Follow the same steps for entering the Expert level.
  • Factory setting for Expert level password is 99 99.

Configuring parameters
After entering the correct password, the screen displays as follows. Touchto advance or return to the desired parameter and use +/- to select the desired available value.

Resetting parameters
The factory setting for the control parameters can be reloaded using P71, by setting the value to ON.

Service level parameters

Parameter Name Factory setting Range RDF800.. Dependencies
Service level
P01 Control sequence 2-pipe:

1 = cooling only

4-pipe:

4 = heating and cooling

0 = heating only 1 = cooling only

2 = H/C changeover manual 3 = H/C changeover auto

4 = heating and cooling

ü
P02 Operation using room op selector 1 1 = Comfort – Protection

2 = Comfort – Economy – Protection

ü
P04 Unit 0 0 = °C

1 = °F

ü
P05 Measured value

correction (for built-in/external sensor)

0 K – 5…+5 K ü
P06 Standard display 0 0 = room temperature 1 = setpoint ü
P08 Comfort basic setpoint 21 °C 5…40 °C ü
P09 Comfort setpoint minimum 5 °C 5…40 °C ü
P10 Comfort setpoint maximum 35 °C 5…40 °C ü
P11 Economy heating setpoint 15 °C OFF, 5…WCoolEco;

WCoolEco = 40 °C max.

ü
P12 Economy cooling setpoint 30 °C OFF, WHeatEco…40 °C;

WHeatEco = 5 °C min.

ü
P13 Electric heater when cooling ON ON: Enabled OFF: Disabled ü
P14 “Screen lock” function 0 0: Unlock

1: Lock

2: Setpoint adjustable

ü
P15 Fan stage in dead zone (Comfort) 0 0 = disabled

1 = low speed (Heat and Cool) 2 = low speed (Cooling only)

ü
P16 Buzzer function ON ON: Enabled OFF: Disabled ü

Note: Parameter display depends on the selected application and function.

Expert-level parameters with diagnostics and test

Parameter Name Factory setting Range RDF800.. Dependencies
Expert level
P30 Heat P-band Xp/switching differential 2 K 0.5…6 K ü
P31 Cool P-band Xp/switching differential 1 K 0.5…6 K ü
P33 Dead zone Comfort mode 2 K 0.5…5 K ü Appl.

*)

P34 Setpoint differential 2 K 0.5…5 K ü Appl.

*)

Parameter Name Factory setting Range RDF800.. Dependencies
Expert level
P35 Integral action time Tn 45 min 0…120 min ü P46
P36 H/C changeover switching point cooling 16 °C 10…25 °C ü P38, P40
P37 H/C changeover switching point heating 28 °C 27…40 °C ü P38, P40
P38 Input X1 3 = window contact 0 = — (no function)

1 = room temp ext. sensor/ return air temp (AI)

2 = H/C changeover (AI/DI) 3 = window contact (DI)

4 = dew point sensor (DI)

5 = enable electric heater (DI) 6 = fault input (DI)

10 = presence detector (DI)

ü P40
P39 Normal position input X1 0 (NO.) 0 = NO. (Normally Open) 1 = NC. (Normally Closed) ü P38
P40 Input X2 1 = ext. sensor 0 = — (no function)

1 = room temp ext. sensor/ return air temp (AI)

2 = H/C changeover (AI/DI) 3 = window contact (DI)

4 = dew point sensor (DI)

5 = enable electric heater (DI) 6 = fault input (DI)

10 = presence detector (DI)

ü P38
P41 Normal position input X2 0 (NO.) 0 = NO. (Normally Open) 1 = NC. (Normally Closed) ü P40
P44 Actuator running time Y1/Y2 150 s 20…300 s ü P46
P45 Power of electric heater on Y2 (for adaptive temperature compensation 0.0 kW 0.0.. 1.2 kW ü
P46 Output Y1/Y2 ON/OFF (1) 0 = 3-position 1 = ON/OFF ü Appl.
P48 ON time minimum 2-pos output 1 min. 1…20 min ü P46
P49 OFF time minimum 2-pos output 1 min. 1…20 min ü
P50 Purge time OFF OFF:        Not active

1…5 min: Active with selected duration

ü P38,
P51 Flow temp limit floor heating OFF OFF, 10…50 °C ü P38, P40
P52 Fan control 1 0 = disabled

1 = enabled

2 = heating only

3 = cooling only

ü
P53 Fan speeds 3-speed 1 = 1-speed

2 = 3-speed

ü P52
P54 Fan overrun time 60 s 0…360 s ü P52,

Appl.

P55 Fan speed switching point high 100% 80…100% ü P52, P53
P56 Fan speed switching point med 65% 30..75% ü P52, P53
P57 Fan speed switching point low 10% 1…15% ü P52, P53
P58 Fan kick start ON ON: Enabled OFF: Disabled ü P52
P59 On time minimum fan 2 min 1…6 min ü P52
Parameter Name Factory setting Range RDF800.. Dependencies
Expert level
P60 Periodic fan kick Comfort OFF 0…89 min, OFF(90) ü P52
P61 Periodic fan kick Eco OFF 0…359 min, OFF(360) ü P52
P62 Service filter OFF (0) OFF, 100…9900 h ü P52
P65 Protection heating setpoint 8 °C OFF, 5…WCoolProt;

WCoolProt = 40 °C max.

ü
P66 Protection cooling setpoint OFF OFF, WHeatProt… 40;

WHeatProt = 5°C min.

ü
P67 Fan start delay 0 s 0…360 s ü P52, P46
P69 Temporary Comfort setpoint OFF OFF = disabled ON = enabled ü
P71 Restore factory setting OFF OFF = disabled ON = reload start ü
P77 Presence Detector Mode 1: Standard Presence Mode 1: Standard Presence Mode 2: Hotel Presence Mode ü P38, P40

Appl:  applications

Parameter Name Range RDF800.. Dependencies
Diagnostics and test
d01 Application number NONE = (no application) 2P = 2-pipe

2P3P = 2-pipe 3-position

2PEH = 2-pipe with electric heater 4P = 4-pipe

ü
d02 X1 state 0               = not activated (for DI)

1               = activated (DI)

0…49 °C = current temp. value (for AI) 00      = H/C input shorted

100          = H/C input open

ü
d03 X2 state 0               = not activated (for DI)

1               = activated (DI)

0…49 °C = current temp. value (for AI) 00      = H/C input shorted

100          = H/C input open

ü
d05 Test mode for checking the Y1/Y2 actuator’s running direction3) “—” = no signal on outputs Y1 and Y2 OPE = output Y1 forced opening

CLO = output Y2 forced closing

ü P46
d07 Software version Ux.xx ü

This parameter can only be quit when the setting is back at “—“ Press buttons + and – simultaneously to escape.

Mounting and installation

Mount the room thermostat on a conduit box. Do not mount on a wall in niches or between bookshelves, behind curtains, above or near heat sources, or exposed to direct solar radiation. Mount about 1.5 m above the floor.

Mounting / Dismounting

  • Do not apply excessive force on screws! The deformation of the mounting frame may lead to improper connections and the operation of the unit.
  • Mount the room thermostat on a clean, dry indoor place without direct airflow from a heating/cooling device, and do not expose it to drips or splashes water.
  • In case of limited space in the conduit box, use the mounting spacer ARG70.3 to increase the headroom by 10mm.
  • Before removing the front cover, disconnect the power supply.

Wiring

See the User Manual for the installation instructions enclosed with the thermostat.

WARNING
Wire, protect and earth in compliance with local regulations.
Risk of fire and injury due to short-circuits!

  • Adapt the line diameters as per local regulations to the rated value of the installed overcurrent protection device.
  • The AC 230 V mains supply line must have an external circuit breaker with a rated current of no more than 10 A.
  • The maximum current loading (including fan and valves) is 10 A.
  • Use only valve actuators rated for AC 230 V.
  • Disconnect from the supply before removing the unit from its mounting plate.
  • Do not connect more than one fan coil unit to the Qs output of the thermostat.
  • Do not connect terminal Y1 or Y2 to either L or N.
  • Do not use terminal Y1 or Y2 as AC 230 V power supply.
  • Use cables with min 230 V insulation for both SELV inputs X1-M / X2-M since the conduit box carries AC 230 V mains voltage.
  • Several switches (e.g. window contact) may be connected in parallel for both inputs X1-M / X2-M. However, overall maximum contact sensing current for switch rating must be considered.

Commissioning notes

Before powering up: Set DIP switches to select the desired application before power up:

Commissioning method

DIP switches

LCD display

Applications

 

 

 

 

Local setup

APP 2P

2-pipe

APP 2PEH

2-pipe with electric heater

APP 4P

4-pipe

APP 2P3P

2-pipe with 3-position output

After DIP switch setting, complete the installation and power up the thermostat.

Notes

  • Other DIP switch position will have no effect, i.e. NONE will be shown on LCD display when the unit is powered up if selected .
  • As soon as the application is changed, the thermostat reloads the factory setting for all control parameters.
  • After DIP switches are selected and the thermostat is powered up, the wizard function guides users to configure the basic parameters for normal operation according to the table below.
  • Touch  /  to advance / return to any parameter;
  • Touch + / – to change value
LCD display Parameter Range Factory setting

 

 

Control sequence

0: Heating only

1: Cooling only

2: Manual changeover

3: Auto changeover

4: Heating and Cooling

 

2-pipe = 1

4-pipe = 4

User operating mode profile

1: comfort > protection

2: comfort > economy > protection

1

Selection of

° C or °F

0: °C

1: °F

0

Standard display

0: Room temperature

1: Setpoint

0

Fan Stage in Deadzone

(Comfort mode)

0: Fan OFF

1: Fan speed 1 Heat / Cool 2: Fan speed 1 Cool only

0

 

Functionality of X1

0: — No function

1: Ext / Return Temp (AI) 2: H/C changeover (AI/DI) 3: Window open detect (DI) 4: Dew point sensor (DI)

5: Enable electr. Heater (DI) 6: Fault input (DI)

10: Presence detection (DI)

 

3

Functionality of X2

1

LCD display Parameter Range Factory setting
Operating action of X1

 

Normal Open (NO) Normal Close (NC)

 

Normal Open (NO)

Operating action of X2

End of wizard

If more details are required about parameters, refer to basic documentation P3174.

Reset

To re-load the factory settings for all parameters, set the parameter P71 to ON. Restart the thermostat after reset. All LCD segments flash, indicating that the reset is correct.
3 seconds later, the thermostat is ready for commissioning by qualified HVAC staff.

Compressor-based application

  • When the thermostat is used with a compressor, adjust the minimum output on-time (parameter P48) and off-time (parameter P49) for Y1 / Y2 to avoid damaging the compressor or shortening its life due to frequent switching.

Calibrate sensor

  • • Recalibrate the temperature sensor if the room temperature displayed on the thermostat does not match the room temperature measured (after min. 1 hour of operation). To do this, change parameter P05.

Setpoint and range limitation

  • We recommend to review the setpoints and setpoint ranges (parameters P08…P12) and change them as needed to achieve maximum comfort and save energy.

Notes: The functional descriptions for the thermostat can be referred to basic documentation (P3174).

Operation

Room temperature out of range

  • When the room temperature is out of the measuring range (that is, above 49 °C or below 0 °C), – – – will be displayed.
  • In addition, the heating output is activated if the current setpoint is not set to “OFF”, the thermostat is in heating mode and the temperature is below 0 °C.
  • For all other cases, no output is activated.
  • The thermostat resumes Comfort mode after the temperature returns to the measuring range.
  • The following pages can be displayed by touching the icon, depending on priority: alarm/service reminder, manual H/C changeover, basic Information about room.

Alarm/Service reminder

  • If any alarm is displayed ( ), touch the   icon to check the alarm or service reminder.
  • If there is more than one alarm, use to browse through all active alarms.
  • The following table describes the detail information for all alarms and services.
Alarm/service Display Error code Type
Condensation Con 4930 Fault
Ext fault input 1 AL1 9001 Fault
Ext fault input 2 AL2 9002 Fault
Clean filter reminder (+/to remove reminder) FIL 3911 Service
Internal sensor error Er1 Fault
EEPROM error Er2 Fault
Floor heating sensor error Er3 Fault

Heating/cooling manual changeover

If manual heating/cooling changeover is set using P01 = 2, touch the or twice (depending on the alarms) to select heating or cooling mode.
The selected control sequence will start in three seconds.

Disposal: This symbol or any other national label indicate that the product, its packaging, and, where applicable, any batteries may not be disposed of as domestic waste. Delete all personal data and dispose of the item(s) at separate collection and recycling facilities in accordance with local and national legislation.
For additional details, refer to www.siemens.com/bt/disposal.

Technical data

Connection terminals

RDF800, RDF800/NF, RDF800/VB

  • L, N Operating voltage AC 230 V
  • Q1 Control output “Fan speed 1 AC 230 V”
  • Q2 Control output “Fan speed 2 AC 230 V”
  • Q3 Control output “Fan speed 3 AC 230 V”
  • Y1,Y2 Control output “Valve” AC 230 V (N.O., for normally closed valves), output for compressor or output for electrical heater
  • X1, X2 Multifunctional input for temperature sensor (such as QAH11.1) or potential-free switch
  • Factory setting: X1 = Window contact
  • X2 = External sensor (function can be selected via parameter P38 / P40)
  • M Measuring neutral for sensor and switch

Connection diagrams

Application

  • N1 Room thermostat RDF800…
  • M1 1- or 3-speed fan
  • V1 Valve actuator, 2- or 3-position
  • V1, V2 Valve actuator, 2-position
  • E1 Electric heater
  • C1, C2 1-stage compressor
  • S1, S2 Switch (keycard, window contact, presence detector, etc.)
  • B1, B2 Temperature sensor (return air temperature, external room temperature, changeover sensor, etc.)
  • X1, X2 Inputs

Example1: With SUA21/3 2-pipe fan coil applicationExample2: With SUA21/3 4-pipe fan coil application

Dimensions (mm)

  • RDF800/NF for square conduit boxes only
  • ARG800.1 Single Mounting Frame for RDF800/NF
  • RDF800, RDF800/VB for round conduit boxes

© Siemens Switzerland Ltd., 2019
Technical specifications and availability subject to change without notice.

Issued by

REFERENCE:

DOWNLOAD MANUALS:

SIEMENS RDF800 Flush mount touch room thermostat Product Specifications Guide

SIEMENS RDF800 Flush Mount Touch Room Thermostat Product Specifications Guide

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