SIEMENS RDH100RF/SET Room Thermostat Product Specifications Guide

SIEMENS RDH100RF/SET Room Thermostat

Non-programmable, for heating systems

• 2-position or PID control to switch on/off heating systems
• Large LCD display
• Minimum and maximum setpoint limitation
• RDH100RF, transmitter, battery powered
• RCR100/433, receiver, mains powered

Use

The device comprises of 1 RDH100RF (transmitter) and 1 RCR100/433 (receiver), is used to control the room temperature in heating systems.
Typical applications:

• Homes
• Residential buildings
• Schools
• Offices

The device can be used together with the following equipment:

• Thermal valves or zone valves
• Combi boilers
• Gas or oil burners
• Pumps

Functions

Temperature control

RDH100RF/SET offers both 2-position and PID intelligent learning temperature control, configurable via parameter P01 (control behavior).
2-position control algorithm to switch on and off the heating system within a switching differential (SD) as per the difference between setpoint setting and measured room temperature.

PID intelligent learning control algorithm periodically switches on and off the heating system. The period time (T) and pulse length (P) of the control signal (PWM) are determined by the setpoint and the measured room temperature.

In general, PID control provides more comfort and is more energy efficient than 2-position control.

Control behavior (P01)

The factory setting for control is “PID slow”, ideal for most heating systems. Optimum control can be selected if control does not provide the desired result:
2-position controller with 1 [K] switching hysteresis

2-position, 1 K

• For systems with small capacity that appear slow
• For applications requiring extended runtimes or where frequent switching causes problems
• For difficult control loops where hunting may result

Typical applications

• Dry floor heating systems
• Heat pumps
• Electric heating with contactors
• 2-position controller with 0.5 [K] switching hysteresis.
• For general control situations. Provides better comfort than 1 [K] switching hysteresis.
• Can also be used for difficult control situations.

PID slow

PID control behavior for slow heating systems that require longer minimum On times and a limited number of switching cycles per hour.
Typical applications:

• Wet floor heating systems, oil fired boilers
• Can also be used for all other types of heating applications. (Alternative setting)

Minimum switch on/off time	> 4 minutes
Minimum period	Approximately 12 minutes

PID fast

PID control behavior for fast heating systems that tolerate a high number of switching cycles.

Typical applications:

• Electric heaters with current valve
• Gas boilers
• Fast thermal actuators

Minimum switch on/off time	> 1 minute
Minimum period	Approximately 6 minutes

WARNING: Do not use PID fast for oil boilers or electric mechanical actuators!
Backup: When removing the batteries, the setpoints and information required for operating mode changeover are retained for max. 2 minutes.

Commissioning notes

Parameter	Description	Factory setting	Setting range	Remark
P01	Control behavior	PID slow (4)	0 = 2P, 1.0 K 1 = 2P, 0.5 K 2 = PID fast 4 = PID slow
P02	Maximum temperature range	30 °C	P03…30 °C	Limit of comfort and economy setpoint
P03	Minimum temperature range	5 °C	5 °C…P02	Limit of comfort and economy setpoint
End	Exit parameter setting

Parameter setting
The parameter setting remains in non-volatile memory and is not erased when the battery is removed. The reset function on the rear of the thermostat reloads the factory settings.

Parameter setting mode

1. Press LEARN on the rear for 5 seconds until “P01” appears.
2. Press LEARN again and, the parameter value on the second line flashes and is ready for adjustment.
3. Adjust the parameter using setting knob.
4. Press LEARN once to confirm the setting.
5. Rotate the setting knob clockwise to next parameter and repeat steps 2 to 4.
6. Exit parameter setting mode by rotating the setting knob clockwise to “End” and pressing LEARN once.

Note: The thermostat automatically exits parameter setting mode one minute after the last action.

Equipment combinations

Description		Product number	Data sheet *)
Electrothermal actuator (for radiator valves)		STA321	A6V12986007
Electrothermal actuator (for small valves 2.5mm)		STP321	A6V12986007
Electromotoric actuator		SFA21..	4863

The documents can be downloaded from http://siemens.com/bt/download.

Display: The digital display shows the current room temperature and the comfort temperature setpoint. When the heating output is active, the triangle symbol is displayed.

Ordering

When ordering, specify both name and product number, e.g. room temperature controller RDH100RF/SET.
Order valves and actuators as separate items.

Mechanical design

The transmitter consists of 4 parts:

• Plastic housing with digital display containing the electronics, operating elements and built-in room temperature sensor
• Baseplate (mounting base)
• Battery compartment
• Fold-out stand

The housing engages in the baseplate and snaps on. There is a reset button on the rear of the transmitter.

Elements	1		Display of the room temperature in °C / °F
	2		Indicates a request for heating
	3		Temperature setting knob
	4		Battery compartment
	5		Comfort temperature setpoint
	6	RF TEST	Indicates RF signal test
	7		Indicates low battery power; replace batteries

The receiver is located in a plastic housing with LEDs and buttons.

The transmitter is located in a plastic housing. Two buttons are visible on the rear when removing the baseplate.

OVERRIDE

Override allows for temporarily overriding the active value from the sender. Override responds differently depending on the radio connection (normal or fault).

• Example A: Normal connection between sender and receiver Press the OVERRIDE button to overwrite the value for ca. 14 minutes. The value then returns to the setpoint.
• Example B: Faulty connection between sender and receiver Press the OVERRIDE button to permanently override the value. The value returns to the setpoint after the connection between sender and receiver works again.

RF LED

RF state	RF LED
Power up (first 5 seconds)	Flash RED
Power up (after 5 seconds)	RED
Press OVERRIDE switch	Flash RED + ORANGE (amber) (4 seconds)
Learning period	No LED
Software reset	RED
RF receive	GREEN
No RF within last 25 minutes	RED
Manual override (RF receive)	Flash ORANGE

Relay state	Relay LED
From OUT to ON (first 5 seconds)	Flash ORANGE
ON	ORANGE
From ON to OFF (after 5 seconds)	Flash ORANGE
OFF	OFF

Mounting

When mounting the transmitter, attach the baseplate first. You need to mount the transmitter on a flat wall. (For details, refer to the separate mounting instructions A6V10974421.)
The transmitter comes with a fold-out stand and may be used as a “mobile” device.

Mounting the receiver does not require a baseplate. Connect the electrical connections first and then fit and secure the receiver in compliance with local regulations. (For details, refer to the separate mounting instructions A6V10974421.)

EMI filter (e.g., KEILS EMI CW4L2-3-R) can be used to reduce EMI disturbance. (For details, see Connection diagram [▶ 14].)

DANGER: Electric shock on directly touches of EMI filter

• Disconnect from power supply before connecting EMI filter.
• Make sure EMI filter is out of reach after installation.

If the reference room contains thermostatic radiator valves, set them to their fully open position.
For commissioning, refer to the operating instructions A6V101035988. Communication of the RDH100RF/SET (transmitter and receiver) is paired ex factory.

• The devices are suitable for wall mounting.
• Recommended height: 1.5 m above the floor.
• Do not mount the devices in recesses, shelves, behind curtains or doors, or above or near heat sources.
• Avoid direct solar radiation and drafts.
• Seal the conduit box or the installation tube if any, as air currents can affect sensor readings.
• Adhere to allowed ambient conditions.

Change of batteries: If the battery symbol appears, the batteries are almost empty and must be replaced.

Reset

Simultaneously press the TEST and LEARN buttons on the rear of the transmitter to reset it.
Simultaneously press the OVERRIDE and LEARN buttons to reset the receiver. This resets all individual settings to their default values.

Maintenance

The transmitter and receiver are maintenance-free except for the transmitter battery.

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 Siemens information on disposal.

Instructions for the replacement of alkaline batteries

WARNING: Explosion due to fire or short-circuit, even with discharged batteries Risk of injury due to flying parts

• Prevent the batteries from coming into contact with water.
• Do not recharge batteries.
• Do not damage or disassemble batteries.
• Do not heat batteries over 85°C.

WARNING

Leakage of electrolyte: Severe burns

• Handle damaged batteries only wearing suitable protective gloves.
• In case of contact with electrolyte, rinse eyes immediately with plenty of water. Consult a doctor.

Observe the following

• Use only a battery of the same type and from the same manufacturer as a replacement.
• Observe the polarities (+/-).
• The batteries must be new and undamaged.
• Do not mix new and used batteries.
• Store, transport and dispose of the batteries in compliance with local requirements, regulations and laws. Also observe the instructions of the battery manufacturer.

Product Documentation

Topic	Title	Document ID:
Operating	Operating instructions	A6V101035988
Installation	Mounting instructions	A6V10974421
CE declaration		A6V101123354

Related documents such as CE declarations, etc., can be downloaded from the following address: http://siemens.com/bt/download.

Technical data

Power supply
Operating voltage	DC 3 V (2 x 1.5 V AA alkaline batteries)
Battery life	>1 year (with AA alkaline batteries)

Sensor inputs
Internal thermistor	10 kΩ ± 1% at 25 °C

Operational data
PID control: Minimum period Minimum pulse length	Slow 4 min 12 min	Fast 2 min 6 min
Setpoint setting range	5…30 °C
Factory setting comfort setpoint	20 °C

Environmental conditions
Resolution of settings and displays Setpoints Actual value displays	0.5 °C 0.5 °C
Operation	IEC 60721-3-3
Climatic conditions	Class 3K5
Temperature	0…+40 °C
Humidity	<90% r.h.
Transport	IEC 60721-3-2
Climatic conditions	Class 2K3
Temperature	-25…+60 °C
Humidity	<95% r.h.
Mechanical conditions	Class 2M2
Storage	IEC 60721-3-1
Climatic conditions	Class 1K3
Temperature	-10…+60 °C
Humidity	<90% r.h.

Standards, directives and approvals
EU conformity (CE)	A6V101123354 *)
RCM conformity to EMC emission standard	A6V101123355 *)
Safety class	III as per EN 60950-1
Pollution degree	2
Degree of protection of housing	IP20
Environmental compatibility	The product environmental declaration (A6V101123359 *) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).

The documents can be downloaded from: http://siemens.com/bt/download.

Eco design and labeling directives
	Based on EU Regulation 813/2013 (Eco design directive) and 811/2013 (Labeling directive) concerning space heaters, the following classes apply:
	Application with On/Off operation of a heator	Class I	Value 1%
	PWM (TPI) room thermostat, for use with On/Off output heaters	Class IV	Value 2%

General
Weight (including package) RDH100RF/SE	475 g
Color of housing front	Signal-white RAL9003
Housing material	ABS (LCD lens:PC)

Receiver RCR100/433

General unit data
Operating voltage *)	AC 230 V +10/-15%
Power	<10 VA
Frequency	50…60 Hz

EMI filter (e.g., KEILS EMI CW4L2-3-R) can be used to reduce EMI disturbance. See Connection diagram [▶ 14].

Outputs
Switching capacity of relays
Voltage Current	AC 24…250 V 8 (3) A
No internal fuse! External preliminary protection with max. C 10 A circuit breaker required for all cases.

Switching outputs (LX, L1, L2)
Relay contacts	Switching voltage	Max. AC 250 V; Min. AC 24 V
	Switching current	Max. 8 A res., 3 A ind.
	At AC 250 V	Min. 10 mA
Contact life at AC 250 V	At 5 A res.	1 x 105 cycles (guide value)
Insulating strength	Between relay contacts and coil	AC 5,000 V
	Between relay contacts (same pole)	AC 1,000 V

Electrical connections
Connections terminals (via baseplate) For solid wires For stranded wires	Screw terminals 2 x 1.5 mm2 1 x 2.5 mm2(min. 0.5 mm2)

Environmental conditions
Operation	IEC 60 721-3
Climatic conditions	Class 3K3
Temperature	0…+45 °C
Humidity	<85% r.h.
Storage and transport	IEC 60 721-3
Climatic conditions	Class 2K3
Temperature	-25…+70 °C
Humidity	<93% r.h.
Mechanical conditions	Class 2M2

Standards, directives and approvals
EU conformity (CE)	A6V101123354
Safety class	II as per EN 60 730-1
Degree of pollution	2

Color
Unit front	Signal-white RAL 9003
Base	Gray RAL 7035
Dimensions	83x104x32 mm

Connection diagram

L – N AC 230 V / Lx – Nx AC 24…250 V	L	Live, AC 230 V
	Lx	Live, AC 24…250 V
	L1	N.O. contact, AC 24…250 V / 8 (3) A
	L2	N.C. contact, AC 24…250 V / 8 (3) A
	PE	Protective ground
	M1	Circulating pump
	N	Neutral conductor
	Nx	Neutral conductor
	N2	Receiver RCR100/433
	Y1	Actuating device

Application examples

Wireless room temperature controller with receiver control of a gas-fired wall-hung boiler		Wireless room temperature controller with receiver control of atmospheric gas burner
Wireless room temperature controller with receiver control of a heating circuit pump (precontrol by manual mixing valve)
F1	Thermal reset limit thermostat	N1	Room temperature controller RDH100RF (Transmitter)
F2	Safety limit thermostat	N2	RCR100/433 (Receiver)
M1	Circulating pump	Y1	3-port valve with manual adjustment
Y2	Magnetic valve

Dimensions

Room temperature controller

Room temperature controller mounting plate
Room temperature receiver with mounting plate

Product History

Index 1)	Date	Changes
≥C	June 2018	Add new function min/max temperature limitation, selectable control behavior and parameter settings.
Z, A	March 2017	First release.

The product index can be found next to the production date on the rear of the device “YYMMDDX”.

© Siemens Switzerland Ltd, 2017
Technical specifications and availability subject to change without notice.

Issued by

• Siemens Switzerland Ltd
• Smart Infrastructure
• Global Headquarters
• Theilerstrasse 1a
• CH-6300 Zug
• +41 58 724 2424
• www.siemens.com/buildingtechnologies

REFERENCE:

DOWNLOAD MANUALS:

SIEMENS RDH100RFSET Room thermostat Product Specifications Guide

OTHER MANUALS:

SIEMENS RDH100RF/SET Room thermostat Operating Instructions

SIEMENS RDH100RF/SET Room Thermostat Product Specifications Guide