Salus S Series User manual
Instruction Manual
S-Series Digital Thermostat
Model No ST620/ST620PB
2
ST620 INSTRUCTION MANUAL2
PRODUCT COMPLIANCE
This product complies with the essential requirements of the following EC Directives:
•Electro-Magnetic Compatibility directive EMC2004/108/EC
•Low Voltage Directive 2006/95/EEC
•EC Marking directive 93/68/EEC
SAFETY INFORMATION
These instructions are applicable to the SALUS Controls model stated on the front cover of this
manual only, and must not be used with any other make or model.
These instructions are intended to apply in the United Kingdom only, and should be followed along
with any other statutory obligations - if you are in any doubt, please contact the SALUS Controls
technical helpline.
This accessory must be tted by a Competent person, and installation must comply with the
guidance provided in the current editions of BS7671 (IEE Wiring Regulations) and Part ‘P’ of the
Building Regulations. Failure to comply with the requirements of these publications could lead to
prosecution.
Always isolate the AC Mains supply before opening or removing the unit from the wall or wall box.
When tting batteries don’t mix new and old batteries together. Do not use rechargeable batteries.
Please leave these instructions with the end user where they should be kept in a safe place for future
reference.
What is a programmable room thermostat?
... an explanation for householders
A programmable room thermostat is both a programmer and a room thermostat.
A programmer allows you to set ‘On’ and ‘Off’ time periods to suit your own lifestyle. A room
thermostat 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.
So, a programmable room thermostat lets you choose what times you want the heating to be on,
and what temperature it should reach while it is on. It will allow you to select different temperatures
in your home at different times of the day (and days of the week) to meet your particular needs.
Turning a programmable 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 programmable room
thermostat to a lower setting will result in the room being controlled at a lower temperature, and
saves energy.
The way to set and use your programmable room thermostat is to nd the lowest temperature
settings that you are comfortable with at the different times you have chosen, and then leave it
alone to do its job. The best way to do this is to set low temperatures rst, say 18°C, and then turn
them up by one degree each day until you are comfortable with the temperatures. You won’t have
to adjust the thermostat further. Any adjustments above these settings will waste energy and cost
you more money.
If your heating system is a boiler with radiators, there will usually be only one programmable 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.
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.
Programmable room thermostats need a free ow of air to sense the temperature, so they must not
be covered by curtains or blocked by furniture. Nearby electric res, televisions, wall or table lamps
may prevent the thermostat from working properly.
3ST620 INSTRUCTION MANUAL
INTRODUCTION
The ST620 from SALUS Controls is a stylish and accurate 5/2 or 7 day programmable electronic
thermostat with a large, easy to read Liquid Crystal Display (LCD). This programmable thermostat
has been specically designed to be used Volt Free.
The use of the revolutionary Touch Ring technology makes for simple usage, and is coupled with a
unique, smart design. The LCD display will show the current room temperature and the ‘one touch’
operation makes the ST620 easy to operate.
FEATURES
• Touch Ring Technology
• Large LCD with White Backlight
• Stylish Casing
• Volt Free Contacts
• Battery Powered with Replacement Indicator
• Frost Protection
• Burner on Symbol
• Radio Controlled Clock (RCC)
• Manual Time / Date Setting Option
• Holiday Function
• Service Function
• Six Time / Temperature Settings
ST620 INSTRUCTION MANUAL4
INSTALLATION
Please read the important safety information at the start of this manual before you start to install the device.
The ideal position to locate the ST620 thermostat is about 1.5m above oor level. It should be mounted in a
location where the thermostat is accessible, reasonably lit and free from extremes of temperature and draughts.
Do not mount the thermostat on an outside wall, above a radiator or in a location where it may be subjected
to direct sunlight.
To ensure trouble free reception for the Radio Controlled Clock (RCC),
always ensure that the programmable thermostat is mounted away
from any possible sources of interference (such as radios, TV sets,
computers, etc.), and is not mounted on or in close proximity to large
metal objects. Installing the ST620 in enclosed areas such as cellars
and basements is not recommended. There are only two electrical
connections required to the ST620, and these connections should be
made to the terminal block inside the programmable thermostat. No
Earth connection is required for the correct and safe operation of the
ST620, but a parking terminal is provided to connect an Earth wire if
one is present. These connections are shown in the drawing and table
below:
Terminal Function
L (COM) Live
SL (NO) Switched Live (output)
Earth Earth Parking (No electrical connection)
NOTE: All electrical installation work should be carried out by a suitably qualied Electrician or other
competent person.
If you are not sure how to install this programmable thermostat consult either with a qualied
electrician, heating engineer or your boiler / heating system supplier for advice on how to continue.
Wiring Diagram
H
T
SL
E
L
System= Heat Control Mode = On/Off
LN
5ST620 INSTRUCTION MANUAL
INSTALLING AND REPLACING BATTERIES
Installing or replacing the ST620 batteries is a straightforward operation, but does require you
to open the case of the programmable thermostat - always isolate the AC Mains supply before
opening the unit.
To open the ST620 case, undo the securing screw on
the bottom of the case (just to the right of the hole
for the Reset Button):
After undoing the screw pull it forward until the
screw stops moving, then carefully separate the
two halves of the case by gently pulling in an
upwards direction. Once the case has been
separated, the batteries should be visible:
Ensure that the batteries are inserted correctly, paying careful attention to the polarity markings on
the battery and next to the battery holders. After inserting the batteries, ret the ST620 case and
retighten the securing screw.
ST620 INSTRUCTION MANUAL6
AFTER INSTALLATION
After completing installation and powering up the ST620 for the rst time the programmable
thermostat will behave in the following way:
All the indicators on the display and the backlight will be turned on.
After 2 seconds the ST620 will then operate in NORMAL mode
and display the current room temperature, with the RCC
indicator ashing.
All programmable thermostat settings will be returned to default values.
If the Reset Button is pressed, the ST620 will behave in the same way as described above, except that
any previously saved user settings stored in the internal memory will be deleted and overwritten
with the default settings.
7ST620 INSTRUCTION MANUAL
ST620 INSTRUCTION MANUAL8
USER INTERFACE AND CONTROLS
The status and operation of the ST620 is clearly
shown on the large backlit Liquid Crystal Display (LCD).
This display allows the user to see at a glance the current
status of the heating system, as well as a clear indication
of the current room temperature.
The display consists of a combination of symbols and alphanumeric displays. The top row is a time and
day of the week indicator, the centre row is used to indicate temperature (in Celsius), and the bottom
row is an alphanumeric display for menu and status messages. The symbols around the outside of the
display are status indicators – an explanation of what these indicators mean is shown below.
Indicator Description Function
Clock Display Displays the day and time
Temperature indicator Displays set or measured temperature
Alphanumeric Display Displays menu and other status messages
Programme Number Displays the number of the
indicator active (selected) programme
Heat Mode indicator Indicates heating output is turned on.
Holiday indicator Indicates Holiday operation mode is selected
Battery Status Indicates battery is low
RF Signal indicator Indicates the unit is transmitting
(not used on ST620) a wireless signal
RCC indicator Indicates the status of the Radio Controlled Clock
Service indicator Indicates Service function is active
Frost Mode indicator Indicates frost setting is turned on
Touch Lock indicator Indicates touch lock is activated
There are few user controls for the ST620, making the programmable thermostat very easy to operate.
The controls are a Touch Ring (which surrounds the user display), two touch sensitive buttons, a reset
button and a slide operated switch mounted on the side of the thermostat.
USER CONTROL FUNCTION SUMMARY:
Key / Operation Functions
Touch Ring (move clockwise) Increases the set temperature and scrolls down the
menu selection
Touch Ring (move anti- clockwise) Decreases the set temperature and scrolls up
the menu selection
OK Key Enters Menu or conrms a menu selection
Arrow (Back) Key Single touch- sets the unit back 1 step.
Hold for 2 seconds sets unit back to normal mode
Reset Button Resets the thermostat to default (original factory) settings
Slide Switch Activates and deactivates the key lock function
(prevents accidental changes)
9ST620 INSTRUCTION MANUAL
These controls are shown below,
along with a description of each of
their functions.
OPERATION
The ST620 is congured and adjusted by the use of an
innovative and stylish Touch Ring, and two touch sensitive
buttons. The Touch Ring surrounds the programmable
thermostat display, and is operated very easily by moving
your nger around the ring.
The backlit Liquid Crystal Display (LCD) gives a highly visible,
easily readable indication of the thermostat status.
ACCESSING THE MENUS
The Arrow key is not active when the ST620 is in NORMAL mode. To access
the Menu screens, press the OK key twice. The rst menu displayed is the
PROGRAMME menu:
Use the Touch Ring to scroll through the
Menus, and press the OK key to select
the menu you want to use:
You can scroll through the menus in
either direction (forwards or backwards)
depending on the direction you move
your nger around the Touch Ring. The
menus are displayed in the order shown
in the picture above.
Pressing and holding the Arrow key for 2 seconds will return the ST620 to NORMAL mode.
The programmable thermostat will also return to NORMAL mode after 10 seconds if no Key is pressed
or if no movement is detected on the Touch Ring.
ST620 INSTRUCTION MANUAL10
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2
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