Danfoss CET 2000B-RF Data sheet
Datasheet
CET 2000B-RF
Wireless Electronic Cylinder Thermostat
Features
The CET 2000B-RF is a battery powered RF cylinder
thermostat which measures cylinder temperature
using a strap-on cylinder temperature sensor.
The sensor is tted to the cylinder wall and wires
directly to the thermostat, which is normally
located adjacent to the cylinder.
The clamp-on sensor comes complete with a
spacer piece to enable installation with most
thicknesses of cylinder insulation (25-55mm).
A receiver unit is mounted next to the boiler or
zone valve and responds to commands issued by
the thermostat over secure wireless connection.
This avoids the need for wiring between the
thermostat and boiler or zone valve, reducing
installation time and cabling.
This arrangement is perfectly suited for new
installations where furnishings prohibit running
recessed or surface mounted cabling, and in
existing installations where the cylinder is being
moved or replaced.
The CET2000B-RF includes a large easy to read
LCD display which is backlit for viewing in dimly
lit locations.
Hot water temperature adjustment is made by
simple up/down buttons and the digital display
allows acurate setting. In normal operation the
display will show the cylinder temperature, when
the buttons are pressed, the display changes and
ashes the set temperature required.
A ame icon is displayed whenever the thermostat
is calling for hot water demand and an aerial icon
conrms that the thermostat is connected to the
receiver.
The Thermostat can be placed in a standby mode
where hot water isn’t required for prolonged
periods or where tampering is an issue the set
temperature can be locked, both modes indicated
by icons on the display.
The display also gives indication when the
batteries need replacing and should there be
an issue with the cylinder sensor error codes are
shown.
Part No. 223v01 06/15
1
Datasheet
ELECTRONICS
N
L
N
L
2
3
4
COM
ON
OFF
230Vac
1
CET 2000B-RF Wireless Cylinder Thermostat
Thermostat Specications
Receiver Specications
Wireless Cylinder Thermostat CET 2000B-RF
Code no. (including RX1-S single channel receiver) 087N727900
Temperature range 40-65°C
Clamp-on temperature sensor •
Operating frequency 433.92 MHz <1mW ERP
Maximum range 30 metres
Power supply 2 x AA alkaline batteries
Maximum ambient temperature 45°C
IP Rating IP20
Dimensions, setting module (mm) 84 wide x 84 high x 35 deep
Dimensions, clamp-on sensor (mm)
(1)
Ensure no large metal objects are between thermostat and receiver as these will interfere with radio signal.
(2)
79mm depth is with spacer for use with high insulation cylinder.
Receiver Features RX1-S
Type Single Channel Receiver
Power supply (receivers) 230 Vac, 50/60 Hz
Contact details 1 x SPDT
Output Volt Free
Contact rating 3A (1) at 230 Vac
IP Rating IP40
Dimensions (mm) 84 wide x 84 high x 28 deep
(2)
49 wide x 49 high x 45 (or 79) deep
Wiring Diagrams
CET 2000B-RF
ELECTRONICS
1
CS2 TANK
SENSOR
RX1-S
3
2
Note: For mains voltage applications link terminals L and 2.
2
Part No. 223v01 06/15
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