resideo Honeywell Home ST9400C User Manual

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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.
Pittway Sarl, Z.A. La Pièce 4,
1180 Rolle, Switzerland
Country of origin : UK
© 2020 Resideo Technologies, Inc. All rights reserved.
The Honeywell Home trademark is used under license from Honeywell International Inc.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.
ST9400C
7 day Programmer, 2 channel, 3 on/off per day
User Guide
This document is to be left with the user
This document is to be left with the user
and forms part of a Home Information Pack
and forms part of a Home Information Pack
50022737-005 C
Features
Easy to use slider and buttons combined with 'LoT'™ Technology and an
'OK' button, allows you to confirm changes and stay in control.
LoT™ Technology provides you with informative 'on-screen' feedback and
operational assistance as and when required.
Extra Large LCD (Liquid Crystal Display) with Backlight provides added user
friendliness and clearer viewing – even in the dark.
Independent 7-day Heating & Hot Water Programmes let you choose settings
built into ST9400C for each day of the week to match your lifestyle, while maximising
energy savings, or alter them to your personal settings.
Automatic Summer/Winter Time Change will adjust the clock forward and
backward automatically when the clocks change, saving you having to change your
ST9400C every time.
Built-in Memory holds your programme indefinitely - even if the mains power fails.
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 55 - 60°C for the hot water temperature.
2. 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.