Danfoss RET2000B-RF Data sheet

Datasheet

ErP

4

RET2000B-RF + RX1-S RF Digital Room
Thermostat

Features

Installer Settings

RET2000B-RF Digital Room Thermostat and RX1-S
Single Channel Receiver provide installation
convenience and location exibility for your home
heating control. This is combined with sleek modern
design and high performing energy saving control
in a feature packed RF thermostat.
Incorporating a generous, easy to read display that
clearly shows the room temperature and output
status of the thermostat and bright status indicators
on the receiver. The backlit display is ideal for those
with poorer eyesight or in locations which are dimly
lit.

As well as standard on/o control the user can
select to benet from Danfoss chrono- proportional
control. Normally set at installation although easy to
change via a DIP switch this micro-processor based
control system will deliver increased comfort and
improved economy.

Heating Control Cooling Control

When chrono-proportional mode is set, the
thermostat introduces a xed cycle rate on the
system and then determines the duration of the On
and O periods within each cycle in proportion to
load. The control algorithm used to determine the
on/o periods uses a proportional + integral (PI)
routine to eliminate oset normally associated with
on/o or simple proportional control.

Chrono-proportional control signicantly improves
comfort and generally improves boiler eciency by
optimising water temperature.

The RET2000B-RF includes an input for a remote
sensor. Congurable for either a remote air
temperature sensor, oor limit sensor or window
switch providing further control exibility.

Additional features include settable upper and
lower temperature limits as well as pushbutton lock
to avoid tampering. If preferred the temperature
display can also be set to show oF.

The RET2000B-RF also has the option to be set as a
cooling thermostat, reversing the output logic and
including compressor delay settings.

• Selectable Chrono Proportional or On/O control

• User Set Upper and Lower Temperature Limits

• Output On Indication

• Remote Sensor Input

• Push Button Lock

• Cooling Option with Compressor delay

• °C or °F Selectable Display

Function Setting Function

Chrono 1 On/Off

6 Cycles 2 3/12 Cycles

3 Cycles 3 12 Cycles

Heating 4 Cooling

°C 5 °F

Keys Unlocked 6 Keys Locked

ErP Class

Product

Class

ERP Class

The products represented within this document are classied according to, and allow completion of, the Energy Related Product (ErP)
Directive System Package che and the ErP system data label. ErP Labelling obligation is applicable from 26th September 2015.

ErP Class Product Function and ErP Description

TPI Room Thermostat, for use with on/off output heaters

An electronic room thermostat that controls both thermostat cycle rate and in-cycle on/o ratio

IV

of the heater proportional to room temperature. TPI control strategy reduces mean water tem­perature, improves room temperature control accuracy and enhances system eciency.

© Danfoss HS | 09/2015 | 129v03 VDRKU202

Function Setting Function

No Comp Delay 1 Comp Delay

4 Min Delay 2 2 Min Delay

Not Active 3 Not Active

Heating 4 Cooling

°C 5 °F

Keys Unlocked 6 Keys Locked

Additional

eciency gain

2%

1

Datasheet RET2000B-RF + RX1-S RF Digital Room Thermostat

Specications and
Ordering Information

Thermostat RET2000B-RF

Ordering code - for set c/w single channel receiver 087N644400

Ordering code - without receiver 087N644300

Product line 03

Type Digital Thermostat

Power supply 2.5 - 3VDC (2xAA batteries)

Maximum range 30 meters

Operating frequency 433.92MHz

Setting temperature range Heating 5-30oC Cooling 16-36oC

Operating temperature range 0-45oC

Battery lifetime Min. 2 years

IP Rating IP20

On/O Control Yes

Chrono-proportional control Yes

Construction EN60730-2-9

Dimensions (mm) H84 x W84 x D37

Receiver RX1-S

Ordering Code 087N777300

Number of Channels 1

Power Supply 230Vac +/-15% 50/60Hz

Output Relay SPDT type 1B

Relay Rating 3A (1) at 230Vac

IP Rating IP40

Construction EN60730-1

Dimensions (mm) H84 x W84 x D28

Product Conversion Table

Wiring Details

New Part Can Replace

RET2000B-RF + RX1-S RET B-RF + RX1

Notes:
(1) RET2000B-RF + RX1-S is not backward compatible with RET B-RF + RX1, in case of replacement both thermostat and receiver
will require changing
(2) Ordering code 087N6444 is for a factory paired set. The RET2000B-RF and RX1-S can also be purchased seperately and paired
at installation
(3) Ensure there are no large metal objects between the thermostat and receiver as this will interfere with the RF signal

RX1-S

ELECTRONICS

N

N

230Vac

L

1

L

2

COM

3

ON

OFF

4

RET2000B-RF Remote Sensor Input

Congured for
remote room
sensor or limit
sensor

2

S1

3

2

1

S2

S1

1

S2

Congured for
window con­tact or other
contact such as
teleswitch

3

Danfoss Ltd.

Ampthill Road
Bedford MK42 9ER
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.heating.danfoss.co.uk

Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already
on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

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© Danfoss HS | 09/2015 | 129v03 VDRKU202