Honeywell DT90A User Manual

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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.

The heating system will not work if a time switch or programmer has switched it off.

The way to set and use your room thermostat is to ﬁnd 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 18ºC – 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 ﬂow of air to sense the temperature, so they must not be covered by curtains or blocked by furniture. Nearby electric ﬁres, televisions, wall or table lamps may prevent the thermostat from working properly.

What is a room thermostat? …an explanation for householders

This product and its associated documentation and packaging are protected by various intellectual property rights belonging to Honeywell Inc and its subsidiaries and existing under the laws of the UK and other countries. These intellectual and property rights may include patent applications, registered designs, unregistered designs, registered trade marks, unregistered trade marks and copyrights. Honeywell reserves the right to modify this document, product and functionality without notice. This document replaces any previously issued instructions and is only applicable to the product(s) described. This product has been designed for applications as described within this document. For use outside of the scope as described herein, refer to Honeywell for guidance. Honeywell cannot be held responsible for misapplication of the product(s) described within this document.

Manufactured for and on behalf of the Environment and Combustion Controls Division of Honeywell Technologies Sàrl, ACS-ECC EMEA, Z.A. La Pièce 16, 1180 Rolle, Switzerland, by its Authorised Representative Honeywell Inc.

http://europe.hbc.honeywell.com

Heat/cool changeover Cambio calefacción/aire acondicionado Chauffage/Réfroidissement Overschakeling warmen/koelen Wechsel heizen/kühlen Cambiamento caldo/freddo Hűtés/fűtés váltás Změna topení/chlazení Zmiana ogrzewanie/chłodzenie Zmena kúrenia a chladenia

HC = 1

3 s

Operating indicators / Indicadores de funcionamiento / Indicateurs de fonctionnement / Bedrijfsmodussymbolen / Betriebsanzeige / Indicatore di funzionamento / Kezelési útmutató / Stavové symboly / Wskaźniki pracy regulatora / Stavové symboly

2 x LR6 AA Alkaline

Heating demand indicator Indicador de demanda de calefacción Indicateur de demande de chauffage Warmtevraagsymbool Anzeige Heizlastanforderung Indicatore di richiesta riscaldamento Hőigény jelzés Symbol požadavku na sepnutí kotle Wskaźnik włączonego palnika Symbol požiadavky na zopnutie kotla

Frost protection Protección antihielo Fonction de protection antigel Vorstbeveiliging Frostschutz Protezione antigelo Fagyvédelem Protimrazová ochrana Ochrona przeciwzamarzaniowa Protimrazová ochrana

Frost protection is not available in cooling operation

La protección antihielo no está activada en modo refrigeración

La protection antigel n’est pas active en mode froid

Vorst beveiliging is niet beschikbaar in koeling.

Frostschutz ist im Kühlbetrieb nicht möglich

La protezione antigelo non è attivata in modalità raffrescamento

A fagyvédelem nem elérhető hűtési üzemmódban.

Protimrazová ochrana je v chladícím režimu vypnuta

Ochrona przeciwzamarzaniowa nie jest aktywna w trybie chłodzenie

Protimrazová ochrana je v chladiacom režime vypnutá

Fault indicator Indicador de fallo Indicateur de défaut Storingssymbool Störunganzeige

Indicatore anomalia Hiba jelzés Výskyt poruchy Usterka Výskyt poruchy

Low battery indicator Indicador de pilas agotadas Indication d’usure de piles Symbool voor batterijvervanging Anzeige für Batteriewechsel Indicazione cambio delle batterie Kimerült elem jelzés Indikace vybité baterie Wskaźnik wyładowania baterii Indikácia vybitých batérii

Room temperature Indicación de temperatura ambiente Lecture de la température ambiante Ruimtetemperatuurweergave Raumtemperatur-Istwert Lettura temperatura ambiente Aktuális helyiséghőmérséklet

Aktuální pokojová teplota Odczyt temperatury Izbová teplota

Set temperature, inquiry Consulta de temperatura deseada Lecture de la température demandée Uitlezen van de ingestelde temperatuur Eingestellte Temperatur anzeigen Interrogazione temperatura impostata Beállított hőmérséklet lekérdezése

Set temperature, adjustment Ajuste de temperatura deseada Réglage de la température demandée Wijzigen van de ingestelde temperatuur Eingestellte Temperatur ändern Modifica temperaura impostata Kívánt hőmérséklet beállítása Nastavení žádané teploty Ustawianie temperature zadanej Nastavenie požadovanej teploty

Switch ON/OFF (frost protection enabled) Botón de encendido / apagado (protección antihielo activada) Bouton Marche/Arrêt (avec protection anti-gel) AAN/UIT-toets (vorstbeveiliging actief) Schalter Ein / Aus (Frostschutz aktivieren) Interruttore ON / OFF (protezione antigelo abilitata) KI/BE kapcsoló (fagyvédelem aktivizálása) Spínač Zapnuto/Vypnuto (aktivovaná protimrazová ochrana) Włącz/Wyłącz (aktywna ochrona przeciwzamarzaniowa) Spínač Zapnutý/Vypnutý (aktivovaná protimrazová ochrana)

Zobrazení žádané teploty Odczyt temperatury zadanej Informácia o teplote

°C

2 s

DT90A Digital Room Thermostat

User Guide / Guía del Usario / Utilisation / Gebruikershandleiding / Bedienung / Guida per l’Utente / Használati Utasítás / Návod k Použití / Obsługa / Návod na Použitie

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