Datasheet
RET1000 Smart Room Thermostat
Features
RET1000 Smart Room Thermostats combine
sleek modern design with high performing
energy saving control. The well-proportioned
dial and clear temperature scale makes setting
easy, including an easy to set upper and lower
temperature limiting feature. All RET1000
thermostats include stylish backlit LED icons
providing clear indication of power and output
status. As well as standard on/o control the
user can select to benet from Danfoss chronoproportional 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.
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 oset normally
associated with on/o or simple proportional
control.
Chrono-proportional control signicantly
improves comfort and generally improves boiler
eciency by optimising water temperature.
• Selectable Chrono Proportional or On/O
control
• User Set Upper and Lower Temperature Limits
• Output On Indication
• Power Indication
Installer Settings
Switch Setting Function
1 On/Off
2 Not Active
3 Not Active
4 Not Active
© Danfoss HS | 09/2015 | 109v02 VDRKS202
On/O Control Chrono-Proportional Control
Switch Setting Function
1 Chrono
2 3 cycles per hour
3 3 cycles per hour
4 Not Active
or 1 Chrono
2 6 cycles per hour
3 6 cycles per hour
4 Not Active
or 1 Chrono
2 12 cycles per hour
3 12 cycles per hour
4 Not Active
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Datasheet RET1000 Smart Room Thermostat
ErP
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Specications and
Ordering Information
Product Conversion Table
ErP Class
Product
Class
Thermostat Features RET1000MS RET1000M RET1000B
Ordering codes 087N645200 087N645000 087N645100
Product Line 03
Type Dial Thermostat
Power Supply 230Vac +/-15%, 50/60Hz 2.5 – 3VDC (2xAA batteries)
Output 230Vac Volt free
Setting temperature range 5-30 °C
Operating temperature range 0-45 °C
Switch rating 3A at 230Vac
Switch type SPDT type 1B
Battery lifetime N/A Min. 2 years
IP Rating IP20
On/O Control Yes
Chrono-proportional control Yes
Dimensions (mm) H84 x W84 x D37
New Part Can Replace
RET1000MS RET230, RET230L
RET1000M RET230VF, RET230VF2
RET1000B New
ERP Class
The products represented within this document are classied 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 eciency.
Additional
eciency gain
2%
Wiring Details
RET1000B
2
1
ON
COM
3
OFF
RET1000M
ELECTRONICS
N
L
N
L
230Vac
1
COM
2
ON
3
OFF
RET1000MS
ELECTRONICS
N
L
N
L
230Vac
2
ON
3
OFF
Danfoss Ltd.
Ampthill Road
Bedford MK42 9ER
Tel: 01234 364621
Fax: 01234 219705
Email: ukheating@danfoss.com
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 | 109v02 VDRKS202
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