Bedienungsanleitung Honeywell ST9420C (Seite 1 von 34) (Englisch)

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User Guide

Y9420S Sundial RF

Pack 3

How to use:

ST9420C Wireless Enabled Programmer

DT92E Wireless Room Thermostat

CS92A Wireless Cylinder Thermostat

BDR91T Wireless Enabled Relay Box (if installed)

System Components

Energy Efﬁciency and the Environment

Home energy use is responsible for more than ¼ of the total UK carbon emissions

which contribute to climate change. Heating and hot water systems based on

boilers account for of this ﬁgure, so it is important to understand how your

controls can help to maximize energy efﬁciency while maintaining your comfort.

Your Programmer should be used in conjunction with appropriate temperature

controls. In order to save energy the following general points should be observed:

1. Ensure your system contains a room thermostat and a hot water thermostat,

and that both are set to appropriate temperature levels: typically 20°C for the

room temperature and between 50 - 60°C for the hot water temperature.

Programme your heating and hot water to be off when you are not in the house. If

you are concerned about possible frost damage to any exposed pipe work, it is

advisable to ﬁt a frost protection system – your installer can advise you about this.

3. Think about how you use your domestic hot water – if you have a storage

system, it is not necessary to have this switched on all the time, even when you

are in the house.

4. Consider the heat up times required for your central heating. Every home

responds differently when the heating is switched on. Adjust the start time so

that you are not cold when you get up in the morning. A shorter heat up time is

required for other heating periods.

5. In the evening, when the house is up to temperature, it is often possible to

switch off the heating up to an hour before you go to bed, without any noticeable

reduction in comfort.

This document is to be left with the user

and forms part of a Home Information Pack

This section is to be completed by the Installer

Honeywell Control Systems Ltd.

Arlington Business Park,

Bracknell

Berkshire

RG12 1EB

Technical Help Desk: 08457 678999

www.honeywelluk.com

50047645-008 A

PLEASE RESPECT YOUR ENVIRONMENT!

Take care to dispose of this product and any

packaging or literature in an appropriate way

WHAT IS A PROGRAMMER?

...an Explanation for Householders (as recommended by the Energy Savings Trust)

Programmers allow you to set ‘On’ and ‘Off’ time periods. Some models switch the central heating and

domestic hot water on and off at the same time, while others allow the domestic hot water and heating to

come on and go off at different times. Set the ‘On’ and ‘Off’ time periods to suit your own lifestyle. On some

programmers you must also set whether you want the heating and hot water to run continuously, run under

the chosen ‘On’ and ‘Off’ heating periods, or be permanently off. The time on the programmer must be

correct. Some types have to be adjusted in spring and autumn at the changes between Greenwich Mean

Time and British Summer Time. You may be able to temporarily adjust the

heating programme, for example, ‘Override’, ‘Advance’, or ‘Boost’. These

are explained in the manufacturer’s instructions. The heating will not work

if the room thermostat has switched the heating off. And, if you have a hot-

water cylinder, the water heating will not work if the cylinder thermostat

detects that the hot water has reached the correct temperature.

WHAT IS A ROOM THERMOSTAT?

...an explanation for Householders (as recommended by the Energy Savings Trust)

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.

Location

ST9420C

DT92E

(typically in living room or hallway)

CS92A

(typically next to hot water tank, in bedroom)

BDR91T

(If installed, typically next to boiler)

Honeywell ST9420C Anleitung

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