Danfoss CET B-RF Istruzioni operative

CET B-RF

Wireless Electronic Hot Water Cylinder Thermostat

User & Installation Instructions

Certification Mark

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

Index

Installation 3-10

Product overview 3

Specication 4

Thermostat installation 5-7

Sensor wiring 8

Receiver installation 9

Receiver wiring 10

Schematics 11-14

Hard wired heating, 3-port 11

Wireless heating, 2 x 2-port 12

Hard wired heating, 2 x 2-port 13

Wireless heating, 3-port 14

Commissioning 15-17

User Instructions 18-21

What is a cylinder thermostat? 18-19

Setting the temperature 20

Display 20-21

Battery replacement 21

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

Installation Instructions

Product overview

The CET B-RF is a battery powered cylinder thermostat

which measures cylinder temperature using a strap-on

temperature sensor. The sensor is tted to the cylinder

wall and wired to the thermostat, which is normally

located adjacent to the cylinder.

To avoid the need for wiring, the thermostat and boiler

or zone valve communicate to each other using secure

RF wireless communication. A receiver unit is mounted

next to the boiler or control valve and responds to

commands issued by the wireless thermostat.

Product overview

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

Specication

Product specication (Thermostat)

Power supply :

2 x AA/LR6/MN1500 alkaline batteries

Transmitter frequency: 433.92MHz

Transmitter range: 30 metres line of sight

Temperature range: 40 - 65°C

Max. temp of thermostat: 45°C

Design standard:

EN60730-2-9 (EN300220 for RF)

Dimensions, mm: 85 wide x 86 high x 42 deep

Control pollution: Degree 2

Ball Hardness 75°C

Temperature accuracy ±1°C

RX receiver unit: see instructions packed with receiver

Specication

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

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 should be

in accordance with the current edition of the IEEE wiring

regulations.

1/2 cylinder

height

Thermostat installation

Installation - Thermostat

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

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 opposite).

4. Mount the thermostat wallplate on to a wall next to the

cylinder. Connect the cable from the sensor to terminals

2 & 3 of the wallplate (see wiring diagram on page 8).

5. Now mount the thermostat setting unit onto the

wallplate and secure using the two screws on the

bottom of the wallplate.

Thermostat installation

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

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.

Using the spacer

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

Sensor wiring

Sensor Wiring

CS1

sensor

1 2 3

CET

Cable specication: minimum cross section 0.5mm2

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

Installation - RX Receiver unit

1. Mount the RX wallplate onto the wall - cable access

must be from behind or below the wallplate.

Typical wiring diagrams, showing the interconnection

between time controls and zone valves, are shown on

pages 11-14.

NOTE: Earth connections are for customer use only.

2. The RX receiver may now be mounted onto the wallplate

and secured using the two screws on the bottom of the

wallplate.

!Important note: Please ensure that when positioning

the thermostat setting unit that there are no large metal

obstructions, ie cylinder or boiler case, sitting in between the

thermostat and the RX receiver unit as these will block radio

communication and prevent the thermostat from operating

correctly.

Receiver installation

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

Receiver Wiring (RF only)

ABC123456

ELECTRONICS

COM

ZONE 1

COM

ZONE 2

ZONE 1

OFF

ZONE 2

OFF

ZONE 1

1234

ELECTRONICS

COM ZONE

1 ON

ZONE

1 OFF

RX1

RX2C

Receiver wiring

Note 1) For mains voltage operated systems link terminal 2 to mains live supply.

2) Power supply to unit must not be switched by timeswitch.

For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub.co.uk - [email protected]

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