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Fixing
1. The metal mounting plate supplied, should be positioned with a minimum of 70mm clearance all around to allow adequate air flow.
2. Fix the mounting plate directly to a flat wall using the wall plugs and screws provided.
3. Remove the battery insulating strip protruding from the rear of the unit. Check the unit is functioning and fit to the metal mounting
plate on the wall
Configuring
The unit is supplied with a 5°C minimum temperature set point and configured as a heating thermostat as factory defaults.
Two internal links can be used to re-configure these defaults.
1. Isolate the thermostat from the mains supply before proceeding
2. Open the unit by slackening the retaining screw on the lower side and hinge unit upward along the top edge to separate it from the
plastic base. Remove batteries.
3. Locate and identify the two option links 1 and 2. Use a pair of small wire cutters to carefully cut the appropriate links to give the
required configuration.
4. Cutting link 1 will give a minimum temperature set point of 16°C (factory default is 5°C). Cut link 2 to display cooling symbol
instead of heating symbol.
5. Carefully replace batteries being sure to observe the correct polarities. Re-fit to plastic base and tighten retaining screw. Check
unit is functioning as required.
6. Re-connect to mains supply.
Battery replacement
This is the only maintenance required for this product and should be carried out by a competent person.
A flashing ‘low batt’ symbol will appear at the bottom left of the display when the batteries start to approach the end of their life. This
indicates that they should be replaced within the next month. Normal operation will be maintained during this period. Ultimately the
complete display will start flashing, at which time the thermostat will switch off the heating and shut down until the batteries are
replaced.
To replace the batteries the following procedure should be carried out. The thermostat should be isolated from the mains before
proceeding.
1. Remove the unit from the wall plate by sliding upwards and gently pulling away from the wall. Slacken the retaining screw on the
unit and open by hinging upwards along the top of the unit.
2. Carefully remove batteries from the battery compartment and fit two new ‘AA’ alkaline cells taking care to observe the correct
battery polarities. Check unit is functioning and re-fit to the plastic base by hinging downwards from the top edge. Ensure unit is
properly closed and re-tighten screw. Check unit is functioning correctly.
Re-mount onto the metal wall-plate and check the TLX 7506 is still in radio communication with the RF receiver. This is easily done by
adjusting the SET POINT to switch the heating system on and off several times and checking the green indicator on the RF receiver
goes on and off accordingly
To clear any problems when fitting batteries, I.E. a blank or partial display, reset the unit by REMOVING the batteries and pressing any
key for 10 secs. To fully discharge any residual voltage.
Commissioning
This is the process of establishing communication between the Sunvic TLX 7506 (RF transmitter) and the TLX 1206 (RF receiver).
The following assumes that the TLX 7506 room thermostat and the TLX 1206 RF receiver have been installed in accordance with the
appropriate instructions.
The commissioning procedure is simple and straightforward, however, should difficulties be experienced, see the ‘Hints & Tips’ section
below. It is important to read through these instructions once before carrying out the procedure.
The procedure consists of putting the TLX 7506 thermostat in a mode where it repeatedly sends a unique security install code. During
this time, the RF receiver is put into install mode when it receives and holds this unique security code. The receiver will then respond to
signals from that particular TLX 7506 thermostat.
RF Receiver LED’s (indicators)
Red LED
Flashing
-indicates receiving an RF signal
Red LED
