Salus ST620WBC User manual
Instruction Manual
Model No ST620WBC
Programmable Thermostat with Plug in RF Boiler Control
2
Salus ST620WBC Manual 013_89 09/02/2012 14:01 Page 1
ST620WBC INSTRUCTION MANUAL2
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PRODUCT COMPLIANCE
This product complies with the essential requirements of the following EC Directives:
•Electro-Magnetic Compatibility directive 2004/108/EC
•EC Marking directive 93/68/EEC
•R&TTE Directives 99/5/EC
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.
This accessory must be fitted 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 installing or removing the Integral
RF Boiler Control to the boiler.
When fitting or replacing the batteries, do not mix old and new 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.
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INTRODUCTION
The ST620WBC comprises of the S series programmable room thermostat with an integral plug-
in RF boiler control. The RF boiler control is a direct replacement for the basic time clock or
blanking plate usually supplied with the boiler. Installing the RF boiler control takes minutes.
Once installed, you will benefit from all the control features of the Salus ST620 programmable
room thermostat.
Your new ST620WBC includes the following:
ST620 Programmable Room Thermostat
A programmable room thermostat is a device that combines the functions of both a room
thermostat and time controller into a single unit. The programmable thermostat is used to switch
your heating system on and off as required. It works by controlling the temperature according
to a series of programmed time settings that take effect at different times of the day.
The ST620 programmable room thermostat is a stylish and accurate 5/2 or 7 day programmable
electronic thermostat with a large, easy to read display. This programmable thermostat has been
specifically designed to be used with the integral RF boiler control.
Features
•Touch Ring Technology
•Large LCD with White Backlight
•Stylish Casing
•Intelligent Communication Technology
•Battery Powered with Replacement Indicator
•Frost Protection
•Burner on Symbol
•Radio Controlled Clock (RCC)
•Holiday Function
•Service Function
•Six Time / Temperature Settings
•Secure RF Transmission
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INTEGRAL RF BOILER CONTROL
The Integral RF boiler control is the RF receiving unit for the ST620 programmable
room thermostat. This unit uses a plug-in connection to connect directly to your
boiler and provides the ON/OFF switching.
Features
•LED status indication
•Plug-in connection to boiler
•3 position switch
•868 MHz communication
About this Manual
This manual is divided into nine parts,
these have been colour coded as follows:
1. INTRODUCTION 4
2. INSTALLATION 6
3. USER CONTROLS 15
4. BASIC OPERATION 18
5. ADVANCED FUNCTIONS 21
6. SERVICE FUNCTIONS 33
7. USEFUL INFORMATION 39
8. TECHNICAL SPECIFICATION 41
9. WARRANTY 43
Also in the box...
Installation Manual
Warranty card,
Surface mount stand
2 x Screws
2 x Anchors
2 x AA batteries
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1. INSTALLATION
ST620 Programmable Room Thermostat
Getting Started…….
Installing the ST620 Batteries
To open the case of the ST620, undo the securing screw on the bottom.
Now pull the screw down until it stops, then carefully separate the two
halves of the case by gently pulling out an upwards direction. You will
now see the battery compartments on the rear of the front fascia as shown.
Ensure that the batteries are inserted correctly and check the polarity.
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Powering up the ST620 for the first time
As soon as the batteries have been inserted, the ST620 will power up for the first time and behave
in the following way:
All the segments on the display along with the display backlight will be turned on as shown.
After two seconds, the software version number will be briefly on the screen.
The ST620 will now prompt you to choose a language. If you require ENGLISH press OK. If you require
a different Language use the touch ring to scroll through the language options then press OK.
The ST620 at this point will be in AUTO and at factory default settings. Changing default settings will
be explained in sections 4 & 5. You will also notice that the time at the top of the LCD is flashing.
This will continue to flash until the unit picks up the RCC (Radio Controlled Clock) signal and displays
the correct time. More information on the RCC can be found on page 29.
Now put the ST620 front fascia in a safe place so you can mount the ST620 back plate. The back
plate is easily fixed to the wall and uses industry standard mounting positions. We recommend that
you continue with the back plate mounting before starting to program the ST620.
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Note: If you do not wish to mount the ST620 on the wall, use the stand provided and
assemble the ST620 front and back housing. Remember to tighten the screw at the bottom.
Wall Mounting Guidelines
The ST620 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.
The ST620 should be mounted in a location where it will not come into contact with moisture or
condensation as this can affect the Touch Ring operation.
To ensure trouble free reception for both the Radio Controlled Clock (RCC) and the Radio Frequency (RF) signal. 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.
NOTE: The ideal position to locate the ST620 is about 1.5m above floor level.
RF Transmission
The receiving range between ST620 and the RF Boiler Control is around 100 metres in open air, however many factors can affect
the RF transmission and shorten the operating distance, e.g. shielding by thick walls, foil back plasterboard, metal objects
such as filing cabinets, general RF interference, and so on.
The operating range is generally around 30 metres, which is large enough for most
household applications.
Mounting the Back plate
Use the screws and anchors supplied to mount the ST620 back plate in your chosen
position. Now attach the ST620 front fascia to the back plate. Remember to tighten the
securing screw
ST620WBC INSTRUCTION MANUAL8
SURFACE MOUNT STAND SUPPLIED
Salus ST620WBC Manual 013_89 09/02/2012 14:01 Page 8
Mounting the RF Integral Boiler Control to the boiler
DANGER!
• 24V & 230V: Do not Touch Electrical Components or circuits
• Isolate mains electricity supply before starting any work
and observe all relevant safety precautions
• Follow electro static discharge precaution.
Do not touch any visible PCB parts or components.
1. Switch off the boiler at its main supply. Remove the outer casing and front
fascia to allow access to the main control panel.
2. Remove cover panel A upwards to remove.
3. Pull top tab B upwards, then outwards to remove blanking plate or existing control.
Now you are ready to fit your Salus integral RF boiler control
9ST620WBC INSTRUCTION MANUAL
B
A
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4. First plug in the connector block C ensuring correct orientation.
Remember to ensure the block is fully connected
5. Now locate the boiler control’s four hooks then press in and down.
Replace Cover panel A.
6. Replace the front fascia and boiler’s outer casing
ST620WBC INSTRUCTION MANUAL10
C
A
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Table of contents
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