Danfoss RET2000B-RF User manual

RET2000B-RF + RX1-S
Electronic digital RF thermostat with LCD
Installation Guide
Danfoss Heating

RET2000
2
For a large print version of these instructions
please call Marketing on 0845 121 7400.
Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other
printed material. 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.
Hearby, Danfoss A/S declares that the radio equipment type RET2000B-RF + RX1-S is in
compliance with directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet
address, http://heating.danfoss.co.uk/xdoccat/14_CATC-J_MNU17497125_SIT313.html
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 Additional ef- ciency gain
IV TPI Room Thermostat, for use with on/o output heaters
An electronic room thermostat that controls both ther-
mostat cycle rate and in-cycle on/o ratio of the heater
proportional to room temperature. TPI control strategy
reduces mean water temperature, improves room tem-
perature control accuracy and enhances system eciency.
2%
ErP
4
Product
Class

Danfoss Heating 3
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Product Specications
RET2000B-RF RX1-S
Operating Voltage 2.5 – 3 VDC
(2xAA alkaline batteries) 230Vac 50/60Hz
Output Relay - 1 x SPDT Type 1B
Switch rating - 3A (1) at 230Vac
Output - Volt free
Setting temp. range 5-30°C (cooling 16-36°C) -
Operating temp. range 0-45°C
Battery lifetime 2 years -
Max. range 30 metres
Operating frequency 433.92MHz <1mW ERP
IP Rating IP20 IP40
Control On-O / Chrono Proportional selectable
Operating modes Heating / Cooling selectable
Construction EN 60730-2-9 EN 60730-1
Control pollution situation Degree 2
Rated impulse voltage - 2.5kV
Ball pressure test 75°C
Dimensions H84 x W84 x D35 H84 x W84 x D28
Software classication A
Important note RF products: Ensure that there are no large metal objects, such as
boiler cases or other large appliances, in line of sight between the transmitter and
receiver as these will prevent communication between thermostat and receiver.

RET2000
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Mounting
Fix at a height of 1.5m
approx from the oor,
away from draughts or
heat sources such as
radiators, open res or
direct sunlight.
Please Note: This product should only be installed by a qualied
electrician or competent heating installer and should be in accordance
with the current edition of the IET wiring regulations.
RET2000B-RF Thermostat

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Mounting and Wiring
ELECTRONICS
NL
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234
COM ON OFF
230Vac
1
RX1-S Receiver

RET2000
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DIL switch settings
Slide the DIL switches
to the settings required.
ON/OFF - output switches ON when below set temperature and
OFF when above. (Reverse when in cool mode)
CHRONO - energy saving feature which res the boiler at regular
intervals to maintain a set temperature, achieving a constant
ambient environment for the user.
o use 6 or 12 Cycles for radiator systems
o use 3 Cycles for underoor heating

Danfoss Heating 7
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DIL Switch Settings
CHRONO
6 CYCLES
3 CYCLES
HEATING
°C
KEYS UNLOCKED
ON/OFF
3/12 CYCLES
12 CYCLES
COOLING
°F
KEYS LOCKED
NO COMP DELAY
COMP DELAY 4 MINS
N/A
HEATING
°C
KEYS UNLOCKED
COMP DELAY
COMP DELAY 2 MINS
N/A
COOLING
°F
KEYS LOCKED
Heating selection
Cooling selection

RET2000
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GB If the thermostat RET2000B-RF and receiver RX1-S have been
supplied together in a combined pack, the units have been
paired in the factory and no commissioning is required. If the
thermostat and receiver have been supplied separately follow
the steps below to pair the devices.
Step 1 RX1-S - Ensure RX1-S is wired in accordance with
instructions on page 5.
Step 2 RET2000B-RF - Insert 2xAA alkaline batteries. If the
RET2000B-RF is not already paired to the RX1-S it will enter it’s
learning mode shown by the ashing aerial icon.
Step 3 RX1-S - Press and hold down both the PROG and CH
buttons. The PROG LED will light for 1 second when it has
paired with the RET2000B-RF. Release buttons
A steady aerial icon on RET2000B-RF conrms that the devices
are now paired and ready for control of your heating or cooling
systems.
Commissioning

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The RET2000B-RF Advanced Programming Mode can be
accessed as follows:
• Press the V button when in heat mode or Λ button when in
cool mode until the standby mode is reached.
• The Λ button or V button should then be released and
then pressed and held for a further 5 seconds to enter the
Advanced Programming Mode.
• To indicate that the unit is in Advanced Programming Mode
the Standby Indicator will ash and the display will show the
setting number alternating with the current value for that
setting.
• To change the setting press either the Λ or V button.
Advanced Programming

RET2000
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GB • A simultaneous push and release of both buttons will scroll
through the steps S1 to S6 and will save the current set value
if altered.
• To exit Advanced Programming Mode and return to Standby
Mode press and hold both buttons for more than 5 seconds.
• While in Advanced Programming Mode if no buttons are
pressed for more than 2 minutes the unit will automatically
return to Standby mode, and the value on the current setting
will not be saved.
S1 – Lower Temperature Limit
This setting allows for a Lower Temperature Limit to be set.
The Lower Limit can be set between 5°C (41°F) and 30°C
(86°F) in Heat mode, or between 16°C (61°F) and 36°C (97°F)
in Cool mode.
Default – 5°C/41°F for Heat mode or 16°C/61°F for Cool mode.