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ST621TX
Digital Room
Thermostat
RXBC605
RXST625
RXRT505
RXVBC605
RXWBC605
The ST621TX can be used with any of these receivers
868MHz

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Summary of Contents for Salus ST621TX

  • Page 1 ST621TX Digital Room Thermostat RXBC605 RXST625 RXRT505 RXVBC605 RXWBC605 The ST621TX can be used with any of these receivers 868MHz...
  • Page 2: Product Compliance

    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.
  • Page 3 The ST621TX 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). The thermostat provides the user interface and temperature sensing / control.
  • Page 4: Installation

    1. INSTALLATION ST621TX Programmable Room Thermostat Getting Started……. Installing the ST621TX 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.
  • Page 5 Powering up the ST621TX for the first time As soon as the batteries have been inserted, the ST621TX 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.
  • Page 6 SURFACE MOUNT STAND SUPPLIED it may be subjected to direct sunlight. The ST621TX 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.
  • Page 7 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 ST621TX INSTRUCTION MANUAL...
  • Page 8 There are few user controls for the ST621TX, 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.
  • Page 9 RXWBC605 manual. refer to the RXRT505 receiver pairing refer to the receiver pairing refer to the to the RXBC605 manual. See page 23. manual. See page 7. RXBC605 manual. See page 16. RXST625 manual. See page 9. ST621TX INSTRUCTION MANUAL...
  • Page 10 On the Thermostat: The Arrow key is not active when the ST621TX is in NORMAL mode. To access the Menu screens, press the OK key twice. The first menu displayed is the PROGRAM menu: Use the Touch Ring to scroll through the Menus, and press the OK key to select the menu...
  • Page 11 Press the OK key to start sending the RF address code to the receiver. The ST621TX display will change to show a rundown timer: The unit counts down for a period of 10 minutes, with the RF Signal indicator flashing while the signal is being transmitted.
  • Page 12 The RF signal indicator only flashes once when a signal is being transmitted. The thermostat will transmit only when there is a need to control the heating system. Will transmit once every twelve minutes. ST621TX INSTRUCTION MANUAL...
  • Page 13: Operation

    ACCESSING THE MENUS The Arrow key is not active when the ST621TX is in NORMAL mode. To access the Menu screens, press the OK key twice. The first menu displayed is the PROGRAM menu:...
  • Page 14 Touch Ring. The menus are displayed in the order shown in the picture above. Pressing the Arrow key will return the ST621TX 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.
  • Page 15 PROGRAMMING THE ST621TX The ST621TX offers great versatility with its programming options, allowing the user to programme the ST621TX to operate on an individual, 5/2 or 7 day control cycle. The programmable thermostat has a default set of Programmes that have been designed to meet the needs of most users.
  • Page 16 OK key. Following this sequence you will have set up Programme 1 – the ST621TX display will then move on to Programme 2. Continue to add your desired settings for each of the programmes through to Programme 6 in the same way as Programme 1 (hour, minutes, and temperature).
  • Page 17 COPY TO screen. On this screen, scroll to the day that you want to copy the settings to using the Touch Ring, and then confirm this by pressing the OK key. The ST621TX will then move to the next day and ask if you would like to copy again.
  • Page 18 HOLIDAY indicator turns on and the HOLIDAY mode is switched on. As long as the ST621TX is in HOLIDAY mode the FROST protection mode will be disabled. When the holiday end date is reached, the HOLIDAY mode will be turned off automatically and the ST621TX will operate in AUTO mode.
  • Page 19 MANUAL or AUTO indication. Pressing the Touch Ring will change the display to show the current temperature setting, but this setting cannot be adjusted while in this mode. ST621TX INSTRUCTION MANUAL...
  • Page 20 NORMAL mode is when the thermostat is displaying the room temperature; if you press the Touch Ring anywhere except the OK and Arrow keys when the ST621TX is in NORMAL mode you can check the set temperature setting. This will display the current set temperature. The set temperature will be displayed for two seconds before the LCD changes to display the room temperature again.
  • Page 21 FROST MENU Entering the FROST menu allows you to turn the frost protection mode of the ST621TX on or off. The FROST mode temperature is preset at 5 ºC; this temperature is factory set and cannot be adjusted. The FROST mode indicator will be displayed on all the FROST menu screens.
  • Page 22: Sleep Menu

    Pressing the Touch Ring for 1 second will turn on the LCD backlight, and pressing the Touch Ring for 3 seconds will wake the ST621TX from SLEEP mode and restore the programmable thermostat to AUTO mode. N.B: The unit will not control the heating while in SLEEP mode.
  • Page 23 Manual Override mode can be cancelled at any time by pressing and holding the Arrow key for 2 seconds – this will return the ST621TX to AUTO mode. If the ST621TX is in Frost,or Holiday or Service mode, the set temperature can’t be adjusted, only can be reviewed. ST621TX INSTRUCTION MANUAL...
  • Page 24 Press the Arrow key to return to the previous screen display, or do nothing for 10 seconds and the ST621TX will return to NORMAL mode. The DST setting allows the ST621TX to automatically adjust the time when local time changes from Greenwich...
  • Page 25 If the ST621TX is able to receive an RCC signal, the time will be correctly updated regardless of the DST setting, but if no RCC signal is being received and DST is ON, then the current stored time will be automatically adjusted.
  • Page 26 If you forget the code you will have to contact SALUS technical team. Once the code has been entered, the next menu screen allows you to set the next service date for the system. Set the date in the order day, month and year: Now you have entered your own PIN code you will be asked to select SERVICE ON or OFF.
  • Page 27 To enter the SERVICE menu, press the OK or Arrow keys, and enter the code you originally set to access SERVICE mode. Once back in SERVICE mode, you can edit the telephone number, set a new servicing date, or turn SERVICE mode ON or OFF in exactly the same way as described earlier. ST621TX INSTRUCTION MANUAL...
  • Page 28: Control Menu

    Engineer carrying out the installation or other qualified person. RADIO CONTROLLED CLOCK The ST621TX time and day of the week settings are updated automatically every day (at 12:00 AM or 2:00 AM) by the use of a very accurate internal Radio Controlled Clock.
  • Page 29: Battery Status

    “low”, in this case the thermostat functions normally during battery low except the backlight is turned off. The ST621TX will enter into OFF mode if the battery voltage falls drastically low, and all outputs will turn off.
  • Page 30: Slide Switch

    Clock, Programme or Temporary Override modes – in this case, the backlight will remain illuminated for 10 seconds after the last key press. The backlight will not illuminate if the ST621TX battery is low, or if the Slide Switch is in the LOCKED position.
  • Page 31: Reset Button

    The Slide Switch has two positions: UNLOCKED and LOCKED. In the LOCKED position, the Touch Lock indicator will be visible on the LCD, and it will not be possible to change the ST621TX settings. If you are unable to change any thermostat settings, check that the Slide Switch is in the UNLOCKED position.
  • Page 32: Maintenance

    There are no user serviceable parts within the unit; any servicing or repairs should only be carried out by SALUS Controls or their appointed agents. Should the ST621TX programmable thermostat fail to function correctly, check: •...
  • Page 33: Product Specification

    14 ºC 11:00 AM 11:00 AM TEMP 21 ºC 21 ºC 1:00 PM 1:00 PM TEMP 14 ºC 14 ºC 4:00 PM 4:00 PM TEMP 21 ºC 21 ºC 9:00 PM 9:00 PM TEMP 14 ºC 14 ºC ST621TX INSTRUCTION MANUAL...
  • Page 34 Type: Electrically Erasable Programmable Read Only Memory (EEPROM) Radio Frequency (RF) Settings Operating Frequency: 868 MHz Max. Operating Range: 100 metres (free air) 30 metres (indoors) Protection rating: IP30 Environment Operating Temperature: 0 ºC to +50 ºC Storage Temperature: -20 ºC to +60 ºC ST621TX INSTRUCTION MANUAL...
  • Page 35 ST621TX Warranty SALUS Controls warrants that this product will be free from any defect in materials or workmanship, and shall perform in accordance with its specification, for a period of two years from the date of purchase. SALUS Controls sole liability for breach of this warranty will be (at its option) to repair or replace the defective product.
  • Page 36 Sales Email: sales@salus-tech.com Tel: 01226 323961 Technical Email: tech@salus-tech.com Tel: 01226 323961 SALUS Controls plc, SALUS House, Dodworth Business Park South, Whinby Road, Dodworth, Barnsley S75 3SP...

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