Danfoss CET2000B-RF User manual

CET2000B-RF + RX1-S + CS2
Wireless Electronic Hot Water Cylinder Thermostat
Installation Guide
Danfoss Heating

CET2000BRF
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 CET2000B-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

Danfoss Heating 3
Product Specications
CET2000B-RF RX1-S
Operating Voltage 2.5 – 3 VDC
(2xAA alkaline batteries) 230Vac 50Hz
Output Relay - 1 x SPDT Type 1B
Switch rating - 3A (1) at 230Vac
Output - Volt free
Setting temp. range 40-65°C -
Maximum ambient temp. 0-45°C
Battery lifetime 2 years -
Max. range 30 metres
Operating frequency 433.92MHz <1mW ERP
IP Rating IP20 IP40
Control On-O
Operating mode Domestic Hot Water Heating
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.

CET2000B-RF
4
1. The clamp on sensor should
be mounted onto the
cylinder wall at a height
equivalent to ½ the height
of the cylinder. Care should
be taken to remove any
insulation material from
the cylinder and to ensure
that the copper surface of
the cylinder is clean. See
diagram opposite for details.
This product should only be installed by a qualied
electrician or competent heating installer, and must be
in accordance with local wiring regulations.
1/2 c
ylinder
height
For insulation thicker than 25mm
and up to 55mm thick, use the
extra cover supplied as a spacer to
ensure that the sensor is held in
firm contact with the cylinder wall.
!
Installation

Danfoss Heating 5
2. Before attaching the sensor to the cylinder using the strap
provided, connect a 2-core cable to the sensor to allow
interconnection to the thermostat setting unit.
3. Apply the contact paste provided to the part of the sensor
in contact with the cylinder and clamp the sensor to the
cylinder wall.
A spacer piece is provided for use with cylinders that have
thick insulation (see page 6).
4. Mount the thermostat wallplate on to a wall next to the
cylinder. Connect the cable from the sensor to terminals 1
& 2 of the wallplate (see wiring diagram on page 7).
5. Now mount the thermostat setting unit onto the wallplate
(see diagrams on page 9).

CET2000B-RF
6
1/2 cylinder
height
For insulation thicker than 25mm
and up to 55mm thick, use the
extra cover supplied as a spacer to
ensure that the sensor is held in
rm contact with the cylinder wall.

Danfoss Heating 7
Sensor Wiring
CS2
sensor
1 2 3
CET2000B-RF
Cable specication: minimum cross section 0.5mm2

CET2000B-RF
8
Installation - RX1-S Receiver unit
ELECTRONICS
NL
NL
234
COM ON OFF
230Vac
1
Please Note: This product should only be installed by a
qualied electrician or competent heating installer, and must
be in accordance with local wiring regulations.

Danfoss Heating 9
Mounting - CET2000B-RF

CET2000B-RF
10
Hard Wired Heating with Wireless Hot Water
Control, 3 Port Mid-Position Valve
ELECTRONICS
NL123
ELECTRONICS
NL2
HTG OFF 3
HW ON 4
HTG ON
230Vac
1
HW OFF
RET1000MS
Room Thermostat
RX1-S Receiver -
paired to CET2000B-RF
FP715 Programmer
3 Port Mid-Position Valve
FP715 Programmer
Boiler
Pump
NL2
blue
brown/ white
orange
grey
N L N L SW.L

Danfoss Heating 11
Wireless Heating and Hot Water Control,
using 2 x 2 Port Valves
ELECTRONICS
NL123
ELECTRONICS
NL2
HTG OFF 3
HW ON 4
HTG ON
230Vac
1
HW OFF
RX1-S Receiver -
paired to CET2000B-RF
FP715 Programmer
Hot Water 2 Port Valve
FP715 Programmer
Pump
Heating 2 Port Valve
blue
brown
orange
grey
N L
blue
brown
orange
grey
ELECTRONICS
NL123
RX1-S Receiver -
paired to RET2000B-RF
Boiler
N L Sw.L

CET2000B-RF
12
Hard Wired Heating with Wireless Hot Water
Control, 2 x 2 Port Valves
ELECTRONICS
NL123
ELECTRONICS
NL2
HTG OFF 3
HW ON 4
HTG ON
230Vac
1
HW OFF
RET1000MS
Room Thermostat
RX1-S Receiver -
paired to CET2000B-RF
FP715 Programmer
Hot Water 2 Port Valve
FP715 Programmer
Pump Heating 2 Port Valve
NL2
blue
brown
orange
grey
N L
blue
brown
orange
grey
Boiler
N L Sw.L

Danfoss Heating 13
Wireless Heating & Hot Water Control, with
3 Port Mid Position Valve
ELECTRONICS
NL123
ELECTRONICS
NL2
HTG OFF 3
HW ON 4
HTG ON
230Vac
1
HW OFF
RX1-S Receiver -
paired to CET2000B-RF
FP715 Programmer
3 Port Mid-Position Valve
FP715 Programmer
Pump
blue
brown/ white
orange
grey
N L
ELECTRONICS
NL123
RX1-S Receiver -
paired to RET2000B-RF
Boiler
N L Sw.L

CET2000B-RF
14
Key Lock
Slide the DIL switches
to the settings required.
1
2
3
4
NOT USED
NOT USED
NOT USED
KEYS UNLOCKED
NOT USED
NOT USED
NOT USED
KEYS LOCKED
To avoid unwanted tampering of the required hot water tem-
perature the CET2000B-RF includes a key lock feature which
disables the Λ and V buttons.
First set the required hot water temperature using the Λ or V
button. Then slide internal DIL switch 4 to the locked posi-
tion and mount the CET2000B-RF back on its wallplate (as
shown on page 9).

Danfoss Heating 15
If the thermostat CET2000B-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 8.
Step 2 CET2000B-RF - Insert 2xAA alkaline batteries. If the
CET2000B-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 CET2000B-RF. Release buttons
A steady aerial icon on CET2000B-RF conrms that the devices
are now paired and ready for control of your domestic hot water
system.
Commissioning

Part No 44101v01 04/15
Danfoss Ltd
Ampthill Road
Bedford MK42 9ER
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.heating.danfoss.co.uk
VIAGD102