Danfoss CET2000B-RF + RX1-S + CS2 Bedienungsanleitung

CET2000B-RF + RX1-S + CS2

Wireless Electronic Hot Water Cylinder Thermostat

User Guide

Danfoss Heating

CET2000BRF

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.

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

Thank you for buying a Danfoss product

CET2000BRF

What is a cylinder thermostat?

... an explanation for householders

A cylinder thermostat switches on and o the heat supply

from the boiler to the hot-water cylinder. It works by sensing

the temperature of the water inside the cylinder, switching

on the water heating when the temperature falls below

the thermostat setting, and switching it o once this set

temperature has been reached.

Turning a cylinder thermostat to a higher setting will not make

the water heat up any faster. How quickly the water heats up

depends on the design of the heating system, for example, the

Danfoss Heating 5

size of boiler and the heat exchanger inside the cylinder.

The water heating will not work if a time switch or programmer

has switched it o. And the cylinder thermostat will not always

switch the boiler o, because the boiler sometimes needs to heat

the radiators.

Cylinder thermostats or cylinder sensors are tted directly to the

surface of the cylinder. The cylinder thermostat (or temperature

controller when used with sensor) will have a temperature scale,

and it should be set at between 60°C and 65°C, then left to do its

job. This temperature is high enough to kill o harmful bacteria

in the water, but raising the temperature of the stored hot water

any higher will result in wasted energy and increase the risk of

scalding.

If you have a boiler control thermostat, it should always be set

to a higher temperature than that of the cylinder thermostat. In

most boilers, a single boiler thermostat controls the temperature

of water sent to both the cylinder and radiators, although in

some there are two separate boiler thermostats.

CET2000BRF

Display

The LCD displays actual cylinder water temperature until the

Λ or V button is pressed more than once. To activate the unit’s

backlight press the Λ or V button once, if no further buttons are

pressed the backlight will remain on for 6 seconds.

Temperature

Danfoss Heating 7

Flame: shows when heating output is on

Standby: shows when unit is manual set to standby

Battery: ashes when battery is low (battery units only)

Padlock: indicates keyboard lock has been set at

installation

Antenna: indicates a paired link is active between the

thermostat and receiver

External Sensor Alarm:

E5 = Sensor short circuit

E6 = Sensor open circuit / missing

CET2000B-RF

Setting the temperature

Press either the Λ or V buttons, the product backlight will come

on.

Press either the Λ or V button again within 6 seconds, the display

will ash with the current set temperature. While the display is

ashing press the Λ arrow to increase the set temperature to the

required setting or the V arrow to decrease the set temperature.

If no buttons are pressed the display will return to actual

temperature after 4 seconds and the backlight will go out after

6 seconds.

Please Note: In order to reduce the risk of Legionella infection, it is

recommended that water be stored at not less than 60°C.

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Thermostat status

A ame symbol will be lit whenever the thermostat is calling for

heat.

Thermostat standby

To place the thermostat into standby (o), press the V arrow

twice to enter the temperature setting mode. Press and hold the

V arrow until the set temperature disappears and the standby

symbol appears.

When in standby the thermostat will have no control of the Hot

Water Cylinder Temperature.

To exit standby press and hold the Λ arrow until the required set

temperature is ashing on the display.

CET2000B-RF

Manual Override

During normal Thermostat operation the CH button on the

receiver will light when the device is calling for heat. Should

communication between the thermostat and receiver fail,

manual override is possible by pressing the CH button once;

the hot water system will remain on during manual override as

indicated by the lit CH button. Press CH button again to cancel

manual override. When communication is re-established the

thermostat and receiver will return to automatic control.

Warning – Leaving the system in manual override will result in

the boiler heating continually and will result in higher energy

usage.

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