Digimax 210 User manual
Digimax 210
Programmable Thermostat
User Guide
The RF DigiMax 210 thermostat does not need any extra
wiring and works within 30 meters range around the receiver
RF-Max. The DigiMax 210 is equiped of a secured RF code
which the RF Max will learn during the installation process.
This code will assure that the receiver will only answer to
messages sent by your DigiMax 210. This process is de-
scribed at the end of this manual.
I. To start :
Remove the battery insulation strip and check unit is func-
tioning.
II. Operation :
The DigiMax 210 Digital Room thermostat is simple to use.
The Liquid Crystal Display continuously shows ambient tem-
perature.
Schema of the thermostat
III. Installation :
Please read all installation instructions before proceeding.
The RF DigiMax 210 works with batteries. It does not need
any wire. If you wish it to replace an old cable thermostat,
isolate and secure the old wires, which are useless now. Do
not forget to cut the power when you take off the old thermo-
stat.
DigiMax 210 Technical Data
Temperature Range : 5°C to 35°C in 1°C steps
16°C to 35°C selectable
Differential : <1°C at 4K per Hour
Ambient temperature : Operating 0°C to 45°C
Power Supply : 3 type AA 1.5 v alkaline cells
Switch : 230v ac 2 (1)A
Battery Life : 2 years Typical
Maintenance : no user maintenance required
RF range : 30 meters
To change the “Set Point” (i.e. temperature requested), press
and hold the “SET” key and at the same time press “+” or “-”
to select the temperature setting. The display will show the
“Set Point” until the “SET” button is released. The display will
then show the ambient temperature.
When the DigiMax 200 instructs your heating system to switch
on, a small flame symbol appears at the bottom right of the
display.
1 Open the unit by slackening the retaining screw situated in
the bottom edge and hinging carefully upwards. Disen-
gage the unit from the wall-plate and place it to one side
for safe keeping.
VI Configuring
The unit is supplied with a 5°C minimum temperature set
point and configured as a heating thermostat as factory de-
faults. Two internal links can be used to reconfigure these
defaults.
3 Remove the battery insulation strip and check unit is func-
tioning, place it on its wall-plate
V Fixing
1 The wall plate should be positionned with a minimum of
70 mm clearance all round to allow adequate air flow
2 Fix the wall-plate directly to a flat wall
The radio link does not mean that the wiring has been sim-
plified, but that the thermostat can be installed in any place of
your house to optimate your needs in heating.
We recommend you to make the installation with the receiver
RF-Max before fixing your thermostat on the wall, in order to
be certain of its good operation at the selected place.
IV Position
The ideal position to locate the DigiMax 210 Digital Room
Thermostat is about 1.5m above floor level, accessible, free
from extremes of temperature and draughts. Do not mount
on an outside wall, above a radiator or where it may be sub-
jected to direct sunlight.
4 Replace batteries being sure to observe the correct
polarities. Re-fit to plastic base and tighten retaining screw.
Check unit is functioning as required.
VII Battery replacement
A “flashing” battery low 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. Ultimately, the display will start flashing and
the thermostat will 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 Slacken the retaining screw on the unit and open by hing-
ing upwards the top edge.
2 Remove batteries and fit two new “AA” alkaline cells taking
care to observe the correct battery polarities. Check unit is
functioning
3 Re-fit it to the plastic base and check that the RF link still
operates. This can be easily done by adjusting the
requested temperature under or over the level of the
ambient temperature, in order to activate and disactivate
several times the boiler while watching the green LED on
the RF-Max receiver.
2 Locate and identify the two option Links 1 and 2. Use a pair
of small wire cutters to cut the appropriate links to give the
required configuration.
3 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.
RF DigiMax 210 Rear View
Cut Link 1 for 16°C minimum set point
Cut Link 2 to display cooling symbol
instead of heating symbol
Batteries
Link 2
Link 1
3 2 1 Terminal block
a) Commissioning
The RF DigiMax 210 is required to be matched with the RF-
Max receiver. This is to ensure only the correct thermostat is
controlling your ambient temperature. The thermostat sends
a signal which is a unique code (1 of 65000), which only the
matched RF-Max receiver is capable of understanding. From
this moment, the RF-Max will only answer to signals sent by
this thermostat
RF link between the Thermostat RF DigiMax 210
and the RF-Max
RF Receiver Led’s (indicators) :
Red Led :
‘flashing’ : indicates receiving an RF signal
‘steady on’ : indicates a fault condition e.g. RF signal
not being received
‘slowly plusing’ : indicates a valid install code has been
received
Green Led :
‘steady on’ : - indicates demand for heat
‘off’ : - no demand for heat i.e. heating call
satisfied
b) Checking the hard wired circuit :
1. Rely the RF-Max receiver to the mains. Check that no ther-
mostat in the heating network request warm. The red LED
should be off.
2. Press the Test button. The Green Led should come on.
Check that the boiler and/or motorised valve have been
operated. Remember to allow adequate time for the valve
to open. Press Test button again. The green led should
go out closing any valve and switching off the boiler.
Nota : the thermostat automatically leaves the test mode
after 15 minutes.
c) Checking the RF circuit
1. To install thermostat with the RF receiver press and hold
the OK and COPY keys together in Auto mode for 3
seconds. The DigiMax 210 will then transmit its unique
digital code every 10 seconds for the next 5 minutes. The
display will show flash ‘]]]’ while this is happening.
2. Within the 5 minute install period go to the RF-Max Re-
ceiver. Press and hold the Install button and then press
the Test button while the Install button is held. This will
clear out any previously installed codes. The Red Led will
pulse slowly for 3 seconds to indicate this has been done.
3. Next, place the Receiver in Install mode by pressing and
holding the Install button (for at least 10 seconds). The
Red LED will come on and stay on until a valid Install
Code has been received. When this happens the Red
LED will start pulsing slowly and the install button can
then be released. The Red LED will pulse for a further 5
seconds and then go off. The Install code has been
successfully received.
4. Go to the Thermostat Transmitter and press any key to
stop the transmission. The display will stop flashing ‘]]]’
and return to normal.
5. The R-Max Receiver will now only respond to radio sig-
nals with the installed code i.e. from the DigiMax 210 Ther-
mostat just installed. Even if the power is removed from
the Receiver it will not forget the installed code.
6. Check that the DigiMax 210 and the RF-Max are commu-
nicating with each other by adjusting the Digimax 210
Thermostat set point above or below the actual tempera-
ture thus generating a radio signal. This will happen every
time the DigiMax 210 Thermostat calls for heating / cool-
ing to be switched on or off.
7. The DigiMax 210 Thermostat also sends a radio signal
every 5 minutes to make sure that the RF-Max Receiver
knows what state it should be in. Therefore every 5 min-
utes the Red LED will flash for 3 seconds. If the RF-Max
does not receive regular RF signals the Red LED will
come full on indicating that a fault condition has occured
and the heating system will be switched off.
Note : If more than one “Thermostat RF- RF Receiver” is
installed with the same caracteristics, it is important to apply
the above process for each thermostat, in order to be sure
that each thermostat is connected to the right receiver.
c) Trouble shooting
1. Red LED stays full on :
This may indicate that the batteries need to be replaced or
that there is an interference with another radio signal.
2. Installation :
If nothing happens after 20 continuous seconds of
pressing of the Install button of the receiver, check that the
thermostat transmits its radio signal (the symbol ]]] flashes
on the display of the thermostat)
3. Minimum temperature level :
If while adjusting the set point it is found that it cannot be
set below 16°C check with the installer that the unit has
not been configured to restrict the minimum set point (this
often required for installations in sheltered accomodation).
See ‘Configuring’ in the installation guide of how to re-
configure the unit.
4. Trouble shooting
If the heater does not operate when the thermostat is
asking for warm, check the battery indicator and changes
the battery units if necessaru. If the indicator has vanished,
remplace the piles for you have probably missed the signal
indicating weak battery. If the batteries are taken out during
more than 5 - 10 minutes, it maight be necessary to make
again the installation with the RF-Max receiver
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