Siemens RDH100RF/SET User manual

Wireless room thermostat with LCD

RDH100RF/SET

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

A6V10954418_en--_h

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Siemens

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2022-12-06

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.

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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

●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 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 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.

2-position, 1 K

2-position, 0.5 K

PID slow

PID fast

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Commissioning notes

Parameter list

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.

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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.

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Elements

Display of the room temperature in

°C / °F

Indicates a request for heating

Temperature setting knob

Battery compartment

Comfort temperature setpoint

RF TEST

Indicates RF signal test

Indicates low battery power;

replace batteries

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

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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

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Relay LED

Relay state

Relay LED

From OUT to ON (first 5 seconds)

Flash ORANGE

ORANGE

From ON to OFF (after 5 seconds)

Flash ORANGE

OFF

Notes

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.

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●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.

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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

Radio frequency

Frequency band

ISM 433MHZ

Maximum radio-frequency power

4.19 dBm

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

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