Salus ERT20RF User manual

Electronic Thermostat With RF
Model No: ERT20RF
INSTRUCTION MANUAL
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 1

2ERT20RF
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 2

PRODUCT COMPLIANCE
This product complies with the essential requirements of the following EC Directives:
•Electro-Magnetic Compatibility directive 2004/108/EC
•LowVoltage 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.
This accessory must be tted by a Competent person, and installation must comply with the
guidance provided in the current editions of BS7671 (IEEWiring Regulations) and Part‘P’of the
Building Regulations. Failure to comply with the requirements of these publications could
lead to prosecution.
When tting batteries don’t 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.
Always isolate the AC Mains supply before opening
or removing the unit from the wall or wall box.
When tting batteries don’t mix old and new batteries together.
Do not use rechargeable batteries.
ERT20RF 3
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 3

INTRODUCTION
The ERT20RF from SALUS Controls is a stylish and accurate dial thermostat.This thermostat has been
specically designed to be used for bothVolt Free and AC heating applications, can replace most
common residential thermostats and is designed to be used with electric, gas or oil heating control
systems. Unlike ordinary single unit design thermostats, this is a new type of thermostat separating
the operational functions into two units.
The receiver is used for wiring connections and on/o control.
The thermostat provides the user interface and temperature sensing / control. The two units are linked
together by a Radio Frequency (RF) signal.
General Features
•Volt free switching option
•User friendly dial
•Simple to use
•16 Amp receiver
•LED Indication
4ERT20RF
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 4

INSTALLATION
Please read the important safety information at the start of this manual before you begin to install the device.
Thermostat
The ERT20RF Thermostat is easily installed using the back plate supplied with the unit – this is used
purely for mounting purposes, as no wiring is needed for the thermostat.The back plate can be mounted
directly to the wall surface.
The ideal position to locate the ERT20RFThermostat 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 operation of the Radio Frequency (RF) signal, always ensure that the 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 ERT20RF in enclosed areas
such as cellars and basements is not recommended.
1. Mount backplate on wall and ensure correct
orientation.
2. Insert the 2 x AA batteries (supplied). If you
are installing for the rst time please put the
thermostat to one side and proceed to page 6.
3. After RF pairing is complete on page 7 then
slide the thermostat onto the backplate ensuring
both sides are engaged. You will feel a positive
click when located properly.
For replacing the batteries reverse the process in step 3.
When the batteries need replaced the LED below the dial will ash
ERT20RF 5
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 5

Receiver
NOTE: All electrical installation work should be carried out by a suitably qualied
Electrician or other competent person.
If you are not sure how to install this digital thermostat consult either with a qualied electrician, heating
engineer or your boiler / heating system supplier for advice on how to continue.
The ERT20RF Receiver should be mounted in a suitable location that is both accessible for the connection
of mains and control wiring, and allows good reception of the RF signal. The Receiver needs a 230V AC
mains supply to operate, and this should be fused appropriately (13A max.). The Receiver should be
mounted in a location where it will not come into contact with water, moisture or condensation.
The Receiver ON/OFF switch is accessible from the front face of the receiver, as shown in this picture:
On the front cover of the receiver you will see that there is
the ON/OFF switch and two LEDs.The top LED (GREEN) will
illuminate when the switch is in the‘ON’position and the
unit is receiving power. The bottom LED (RED) illuminates
when the receiver unit is receiving a heat call transmission
from the thermostat.
The wiring terminals are located on the rear of the receiver,
as shown in this picture:
6ERT20RF
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 6

RECEIVER WIRING TERMINALS
Terminal Identier Description
1 NO Normally Open [N/O]
2 COM Linked Live feed (230V AC heating applications only)
3 L Live feed (230V AC)
4 N Neutral
TYPICAL WIRING INSTALLATIONS
a.Volt Free Installation
Notes:
• Receiver unit should have a permanent 230V AC main supply
• Conrm that the Boiler has an external thermostat loop and
is congured for Volt Free switching
ERT20RF 7
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 7

b. 230V Installation
Add Link
Notes:
• Receiver unit should have a permanent 230V AC main supply
• Conrm that the Boiler is congured for 230V switching
PLEASE DO NOT SWITCH THE RECEIVER ON UNTIL YOU ARE READY TO PAIR WITH THERMOSTAT
RF PAIRING
Switch on receiver and the RED LED should start ashing. If receiver was already switched on, switch
OFF then back ON again the RED LED should start ashing.
Now press and hold the SYNC button on the rear of the thermostat for 3
seconds. The LED below the dial will start ashing.
Now check the LED on the receiver, once RF pairing is successful the LED
on the receiver will stop ashing
Now press and hold the SYNC button on the thermostat for 3 seconds.
The thermostat should now be paired with the receiver.
SYNC
/OFF
EAT
Back of unit
8 ERT20RF
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 8

TESTING THE RF TRANSMISSION
It is important to site both the receiver and thermostat in locations where the RF signal cannot be
interrupted.
The receiving range between thermostat and receiver is approximately 30 metres indoors, however
many factors can aect the RF transmission and shorten the operating distance, e.g. shielding by thick
walls, foil back plasterboard, metal objects such as ling cabinets, general RF interference, and so on.
The range is generally large enough for most household applications, to check the RF reception, follow
the following steps:
1. Turn the thermostat to 30ºC.The LED under the dial should come on.
2. Check the Green LED on the receiver unit - it should be lit and boiler should re.
3. Turn dial down to 5ºC.The LED under the dial should go o.
4. Wait for a few seconds and the Green LED should switch o. The boiler should also switch o.
5. If the operation of 1-4 is successful then you have a good RF link between the thermostat
and the receiver.
6. Return the dial to the preferred set temperature for the application.
If you are unable to get a stable RF connection between the receiver and thermostat, check that the
receiver is both switched on and has a mains supply (red LED illuminated). If this isn’t a problem then
try pairing the thermostat to the receiver again. See page 8.
ERT20RF 9
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 9

CONFIGURATION
Your ERT20 thermostat is congured for HEATING control and simple ON/OFF switching, however it can
be congured for COOLING. This is easily done by changing the “jumper” setting. The “JUMPER”peg is
located on the rear of the ERT20TX.
JUMPER Position
SYNC
COOL HEAT
COOL HEAT
Default
Default HEAT COOL
COOL HEAT
COOL HEAT
10 ERT20RF
Salus ERT20RF Ver009.qxd_89 11.03.2014 11:17 Strona 10