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 fitted 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 flashes the set temperature required.
A flame icon is displayed whenever the thermostat is calling for hot water demand and an aerial icon confirms 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 |
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Datasheet |
CET 2000B-RF Wireless Cylinder Thermostat |
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Thermostat Specifications |
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Wireless Cylinder Thermostat |
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CET 2000B-RF |
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Code no. (including RX1-S single channel receiver) |
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087N727900 |
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Temperature range |
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40-65°C |
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Clamp-on temperature sensor |
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• |
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Operating frequency |
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433.92 MHz <1mW ERP |
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Maximum range |
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30 metres |
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Power supply |
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2 x AA alkaline batteries |
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Maximum ambient temperature |
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45°C |
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IP Rating |
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IP20 |
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Dimensions, setting module (mm) |
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84 wide x 84 high x 35 deep |
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Dimensions, clamp-on sensor (mm) (2) |
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49 wide x 49 high x 45 (or 79) deep |
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(1) Ensure no large metal objects are between thermostat and receiver as these will interfere with radio signal. |
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(2) 79mm depth is with spacer for use with high insulation cylinder. |
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Receiver Specifications |
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Receiver Features |
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RX1-S |
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Type |
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Single Channel Receiver |
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Power supply (receivers) |
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230 Vac, 50/60 Hz |
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Contact details |
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1 x SPDT |
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Output |
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Volt Free |
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Contact rating |
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3A (1) at 230 Vac |
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IP Rating |
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IP40 |
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Dimensions (mm) |
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84 wide x 84 high x 28 deep |
Wiring Diagrams
CET 2000B-RF |
RX1-S |
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1 2 3
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N |
L |
1 |
2 |
3 |
4 |
CS2 TANK |
N L |
COM ON OFF |
SENSOR |
230Vac |
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Note: For mains voltage applications link terminals L and 2.
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Part No. 223v01 06/15 |
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