Danfoss RET 24, RET 24NSB, RET 24VF Installation guide

RET 24

Electronic thermostat

RET 24

RET 24NSB

RET 24VF

®

Certification Mark

2

6 GB - Specifi cation
7 F - Spécifi cations
8 D - Tecnishe Daten
9 ES - Especifi caciones
10 DK - Specifi cations
11 NL - Technische Specifi caties
12 GR - РспдйбгсбцЮ
13 PL - Specyfi kacja
14 LT - Specifi kacija
15 I - Specifi cazioni
16-17 GB - Mounting / F - Montage / D - Befestigung / ES - Montaje /
DK - Montering / NL - Montage / GR - ЕгкбфЬуфбуз / PL - Montaż /
LT - Montavimas / I - Montaggio
18-21 GB - Wiring / F- Câblage / D - Verkabelung / ES - Cableado /
DK - Ledningsføring / NL - Aansluitingen / GR - УхсмЬфщуз /
PL - Podłączanie przewodów / LT - Laidai /
I - Cablaggio
22 GB - Mounting / F

- Montage / D - Befestigung / ES - Montaje /

DK - Montering / NL - Montage / GR - ЕгкбфЬуфбуз / PL - Montaż /
LT - Montavimas / I - Montaggio
23 GB - Locking & limiting / F - Verrouillage & Limitation /
D - Sperren & Begrenzen / ES - Bloquear y Limitar /
DK - Lasning og begaensning / NL - Blokkeren & Begrenzen
GR - БуцЬлйуз кбй ресйпсйумьт / PL - Zamknięcie i ograniczenie /
LT - Blokavimas ir ribojimas / I - Bloccaggio e esclusioni

3

What is a room thermostat?

... an explanation for householders
A room thermostat simply switches the heating system on and off as
necessary. It works by sensing the air temperature, switching on the
heating when the air temperature falls below the thermostat setting,
and switching it off once this set temperature has been reached.
Turning a room thermostat to a higher setting will not make the
room heat up any faster. How quickly the room heats up depends on
the design of the heating system, for example, the size of boiler and
radiators.
Neither does the setting affect how quickly the room cools down.
Turning a room thermostat to a lower setting will result in the room
being controlled at a lower temperature, and saves energy.

4

The heating system will not work if a timeswitch or programmer has
switched it off.
The way to set and use your room thermostat is to fi nd the lowest
temperature setting that you are comfortable with, and then leave it
alone to do its job. The best way to do this is to set the room thermostat
to a low temperature – say 18°C – and then turn it up by one degree
each day until you are comfortable with the temperature. You won’t
have to adjust the thermostat further. Any adjustment above this
setting will waste energy and cost you more money.
If your heating system is a boiler with radiators, there will usually be only
one room thermostat to control the whole house. But you can have
different temperatures in individual rooms by installing thermostatic
radiator valves (TRVs) on individual radiators. If you don’t have TRVs,
you should choose a temperature that is reasonable for the whole
house. If you do have TRVs, you can choose a slightly higher setting to
make sure that even the coldest room is comfortable, then prevent any
overheating in other rooms by adjusting the TRVs.
Room thermostats need a free fl ow of air to sense the temperature, so
they must not be covered by curtains or blocked by furniture. Nearby
electric fi res, televisions, wall or table lamps may prevent the thermostat
from working properly.

5

GB

GB

GB

Speci cation

Speci cations

Temperature range 5-30°C

Construction BS EN60730-2-9

Speci cation

Speci cation

Speci cation

Maximum Ambient Temperature 45°C

IP Rating IP20

Supply Voltage 24Vac, 50/60Hz

Switch Rating 3(1)A

Switch Type 1B

Control Pollution Situation Degree 2

Rated Impulse Voltage

Ball Pressure Test 75°C

6

2.5kV

Spéci cations

Spéci cations

Plage de températures 5-30°C

Normes de fabrication BS EN60730-2-9

Température ambiante maximale 45°C

Indice de protection IP20

Tension d’alimentation 24Vac, 50/60Hz

Caractéristique de commutateur 3(1)A

Type de commutateur 1B

F

F

F

Spéci cations

Spéci cations

Spéci cations

Etat du contrôle de pollution Degré 2

Essai à la bille

Tension assignée de tenue au choc

7

2.5kV

75°C

D

Tecnishe Daten

Technische Daten

Temperaturbereich 5-30°C

Bauart BS EN60730-2-9

Maximale Umgebungstemeratur 45°C

Schutzart IP20

Tecnishe Daten

Betriebsspannung 24Vac, 50/60Hz

Nominaler Kontaktstrom 3(1)A

Schalterart 1B

Emissionswerte Grad 2

Nennimpulsspannung

Kugeldruckprüfung 75°C

8

2.5kV