Manual Issue No. IM-T105VF-001
T105 RF
1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Warning - Please read this manual prior to
installation or use.
Shock Hazard
This unit must be installed by a competent person,
in accordance with BS 7671 (the IEE Wiring
Regulations), or other relevant national regulations
and codes of good practice.
Always isolate the AC Mains supply before removing
the unit from the Industry Standard Back Plate.
INTRODUCTION
This thermostat can replace most common
residential thermostat and is designed to be used
with electric, gas or oil heating control system or
cooling system.
Unlike ordinary single unit design thermostat,
This unit is a new type of thermostat separating the
thermostat function into two units. The Receiver
serves for wiring connections and heat/cool on/off
control. The Control Centre serves as user interface
and temperature sensing/control. The two units are
linked by RF.
The advantage is that user can put the Control
Centre nearby and can read/control the temperature
of really the living area.
Outlook of Control Centre:
LCD :
Receiver installed on wall box
LED IndicatorsPower switch
Front CoverFront View
ON
OFF
Features :
Several useful function and operating modes have
been incorporated to suit a variety of customer
needs besides all the features associated with the
state of the art programmable thermostat.
Control Centre:
- Can be placed anywhere in the home to detect
and control the temperature of an area of the
user’s choice. Not limited by power control wiring
locations.
- Link with the Receiver via RF. Control distance
100M open site
- LCD shows the "need to know" information
only, which is more easy to understand.
- Real time clock with day of the week display
- Room temperature display
- Control profile display
- Simplified temperature adjustment - Simplified
programming procedure
- 6 pre-defined control profiles, 3 user
programmable control profile
- A protection against freezing
- Temporary override set-temperature
- User selectable temperature span
- User selectable heater/cooler operation mode
- Battery level detection
- 2 AA size alkaline batteries (not included)
- Slim housing design
- EL backlight
Receiver:
- Linked with Control Centre via RF.
- Power control rating up to 230VAC 16A
resistive.
- Powered by line voltage only. No battery
required.
- Two LED indicators for power and output status.
INSTALLATION OF RECEIVER
Caution :
1. The appliance can only be mounted indoors
and in areas free from any water or moisture
2. A suitable fuse with a rating not exceeding
13A, should be in the power line.
3. Observe the nation regulator for the wiring.
4. A qualified electrician is recommended for
installation and servicing.
This thermostat has been designed for simple and
quick installation requiring only a few tools. Only the
Power Control Unit needs to be installed.
Required Tools
• Hammer • Masking tape • Screwdriver
• Drill and 3/16" drill bit (if not installed on a
junction box)
RF Address Code Setting
If there is another user nearby, e.g. in the next
house, your receiver may be fault triggered by their
transmitter. You may select a different RF address
code to prevent this. Receiver can only response to
RF coding with the same address code setting as its
own address code.
1. To adjust address code of Receiver, simply
push up one or more of the 5 dip switch
levers.
2. To adjust address code of Control Centre, open
the housing of the transmitter unit. See battery
replacement section on how to open the housing.
3. Remove one or more of the jumper caps as
shown in the diagram below.
Caution :
1. Address code of Control Centre must be the
same as address code of Receiver. For any
jumper cap removal of address code # in
Control Centre, the same address code # of
Receiver must be put to the UP position.
2. Disconnect AC power and remove batteries
prior to adjusting address code.
Remove one or more of
the jumper cap to adjust
RF address code.
Address code # 1 - 5, from
left to right
Push up one or
more of the
white levers to
adjust Receiver
address code.
Address code # 1
- 5, from left to
right.
Removing your old thermostat
CAUTION : to avoid electric shock, isolate the power
of the heating/cooling system at the main power box
in your home. Read the following instructions careful-
ly before disconnecting the wires.
1. Turn off your old thermostat.
2. Remove the cover from the old thermostat.
3. Unscrew the old thermostat from the wall plate.
4. Now find the screws attaching the wall plate to
the wall, and remove them. You should now be
able to pull the wall plate a small distance from
the wall. Do not disconnect any wire yet, simply
locate the wires.
WARNING:
After removing the wall plate, if you
find that it is mounted on a junction box (e.g. a box
similar to one behind a light switch or electric
outlet), high voltage circuit may be present and
there is a danger of electric shock. Please consult a
qualified electrician.
Choosing a Location
Note: for a new installation, choose a mounting
location about five feet (1.5 metre) above the floor
in an area with good air circulation and away from.
1. Drafts.
2. Air ducts.
3. Radiant heat from the sun or appliances.
4. Concealed pipes and chimneys.
Mounting the Receiver onto the
wall/junction box:
1. Remove the front cover of the Receiver. (go to
step 4 if installed on a junction box)
2. Mark the holes position.
3. Drill two holes and insert the plastic anchors
carefully into the holes until they are flush
with the wall.
4. Connect the wires - see wiring diagram.
5. Push on the wires in the wall.
6. Securely fasten the Receiver to the wall with the
two screws.
7. Replace the front cover and installation is
completed.
Mounting the Receiver onto the
optional wall box :
1. Remove the front cover of the Receiver.
2. Mark the holes position for the wall box.
3. Drill two holes and insert the plastic anchors care
fully into the holes until they are flush with the
wall.
4. Pull the wires into the wall box and fasten the
wall box onto the wall.
5. Connect the wires
- see wiring diagram.
6. Push on the wires in the wall box.
7. Securely fasten the Receiver to the wall box with
the two screws.
8. Replace the front cover and installation is
completed.
SETTING OF CONTROL CENTRE
Heater/Cooler Selection
Before making any selection in the
control centre, its back housing must
be removed as follows :
WIRING DIAGRAM
FOR 230V APPLICATION
The unit is default 230V, if volt free application is
required you must remove link & follow diagram
below.
SL (Off) - Heat Off
L - Live
SL (On) - Heat On
N - Nuetral
WIRING DIAGRAM
FOR VOLT FREE APPLICATION
The unit still requires a 230V feed for V.F.
applications
L - Live (230V Feed)
N - Nuetral
NC - Normally Closed
COM - Volt Free Feed
NO - Switched Live (Volt Free)
Remove
the front
housing
Push and
hold internal
lock by a
screw driver
Inside the Control Centre after back
housing is removed, you can find the
DIP switch. These three switches are
used to control the span and
heat/cool system. Set the DIP switch
(position 3) according to your
selection of heater
system or cooler
system as the following
diagram.
20°C and span to 1°C, the heater will operate when
the room temperature drops to 19.5°C and turns off
when the temperature rises to 20.5°C. Set the DIP
switch (position 1 & 2) according to your selection
of temperature span as the following diagram.
On: Heater
Off: Cooler
Set the DIP switch (position3)
Battery Installation
Your thermostat uses two (2) "AA" size
batteries to operate. To power-up the unit,
insert two "AA" batteries into the battery
compartment of the front housing. When
power is applied for the first time, the
display must show time and the day as well
as the room temperature (for example
28.5°C).
If the display is different, press the
RESET button. Use a fine probe such as
straightened paper clip to gently push the
RESET button.
Temperature Span Selection
Span is the temperature difference between the turn
on temperature and turn off temperature. For exam-
ple, in heating systems, if you set temperature to
After installation of the batteries, push back the rear
housing to the control centre and then the stand.
Before turning on the main switch of the system,
press the reset button once. The thermostat is ready
for use.
Setting Clock
1. Press the SET TIME button to clear all digits
except the day indicator and the time display.
The day indicator is flashing.
2. While day indicator is flashing, press UP or
DOWN button to adjust.
3. Press the SET TIME button again, hour digits are
flashing instead of day indicator. Press UP or
DOWN button to adjust. Press and hold the UP or
DOWN button to speed up the adjustment rate.
4. Press the SET TIME button again, minute digits
are flashing instead of hour digit. Press UP or
DOWN button to adjust. Press and hold the UP or
DOWN button to speed up the adjustment rate.
5. Press the SET TIME button again to return to
normal operation mode.
6. The unit will return to normal operation mode if
no key is pressed for 10 seconds.
Setting Control Temperature
1. Press the SET TEMPERATURE button to display the
pre-defined set temperature.
2. Press the CONF/ECON button to toggle between
the setting of economic mode and comfortable
mode.
3. Press the UP or DOWN button to
increase/decrease the set temperature by 0.5°C.
4. Press the SET TEMPERATURE button again to save
the set temperature.
5. The unit will return to normal operation mode if
no button is pressed for 10 seconds.
6. The default setting of comfortable mode is 21°C
for heater mode and 23°C for cooler mode. And
the economic mode is 18°C for heater mode and
26°C for cooler mode.
Setting Program
i) Select Week-Day
1. Press the SET PROGRAM button, the day
indicator shows the program day and is flashing.
Program number indicator shows the current
program for the selected day.
2. Press the UP or DOWN button to select the day
needed to program. You can select the whole
week, working day, weekend,or individual day to
program.
ii) Select Control profile
pre-defined
1. Press the SET PROGRAM button again, the day
indicator stop flashing and the program number
starts flash.
2. Press the
UP or
DOWN
button to
select the
program
profile.
P1-P6 are
predefined
program,
their profile
are shown
as follows.
3. If any of these programs is selected, press the
SET PROGRAM button again to confirm this
program for the specified day and return to
normal operation mode.
4. Press the button to toggle the control
temperature setting and advance the setting
hour digit by one.
Example:
button is pressed. Hour Digit (Clock) is 2 and
the 02 hour bar is flashing. icon is on and the
operation mode for hour 01 is set to economic mode.
5. Press the button to terminate the setting
procedure and to return to normal operation mode.
button is pressed.Terminate the setting
procedure and the new control profile is :
6. The setting procedure will terminate automatically
when no button is pressed for 10 seconds.
Example:
19 20 21 22
TESTING THE RF TRANSMISSION
RANGE
1. Press UP button until the setpoint temperature is
higher than room temperature by a few degrees.
2. Wait for a few seconds.
3. Check the green LED. It should be On.
4. If the LED is not On, try to place the Control
Centre closer to the Receiver. Press Down button
to adjust the setpoint temperature to be lower
than room temperature to "turn off" the receiver.
5. Repeat steps 1 to 3.
6. The receiving range between Control Centre and
Receiver is 100M in open area. When placed
indoors, this distance may be shorter because of
blocking by concrete walls etc, but is enough for
most household applications.
7. Press RESET button after receiving range testing.
TEMPORARY OVERRIDE
Override the Operation Mode
At the normal operation mode, press the
CONF/ECON button to toggle the current set tem-
perature to comfortable mode or economic mode.
If the operation mode is being overriden, the HAND
icon will be turned on with the current operation
mode icon.
Override the Setting Temperature
1. In the normal operation mode, the current set
temperature can be overriden by pressing the UP
or DOWN button. When in override, the new set
temperature will be displayed with turning the
HAND icon on and both the CONF and ECON
icons off.
2. Press any button (except the UP or DOWN
button), this will terminate the setting procedure
and will revert back to normal mode with the new
setting.
3. The unit will revert to normal operation mode
automatically when no button is pressed for 10
seconds.
ANTI-FREEZING MODE
1. Pressing the UP and DOWN buttons
simultaneously will activate the anti-freezing
mode (for heater mode only). The ANTI-
FREEZING icon and the HAND icon will be turned
on while both the COMF and ECON icon will be
turned off.
2. Pressing any button will terminate the anti-
freezing mode and revert to normal operation
mode.
3. The default set temperature for the anti-freezing
mode is 7°C.
BACK- LIGHT
Press the BACK-LIGHT button to turn on the back-
light. The back-light will switch off when no button
is pressed for 10 seconds.
BATTERY REPLACEMENT
It is recommended to replace the batteries when the
display is showing the battery-low icon. To replace
the battery,
1. Turn off the power of the Receiver first.
2. Remove the back housing and stand of the
Desktop Unit.
3. Replace the old batteries with 2 new AA alkaline
batteries.
4. Replace the back housing and stand.
5. Press the reset button once and then turn on the
power switch of the Receiver.
POWER SWITCH
There is a power switch on the Receiver. When there
is no demand to turn on the heating/cooling device,
e.g. when you go on holiday, it is recommended to
turn the power switch to the Off position.
LED INDICATOR
There are two LEDs on the Power Control Unit as
status indicators:
1. Red LED turns on as long as there is power to the
unit. When there is no power to the unit or when
power switch underneath the front cover is
put at the Off position, the red LED is Off.
2. Green LED turns on as long as the heating/
cooling device is energised.
SPECIFICATION
Physical Characteristic
Size : Control Centre 116 x 100 x 23.5 mm
Receiver 91.5 x 91.5 x 42 mm
Weight : Control Centre 126g
Receiver 176g
Electrical Characteristic
Power Source : Control Centre 2 AA (LR6) batteries
Receiver 230VAC 50Hz
Clock accuracy : +/ - 60 seconds/month
Temp. measurement : 0°C to 40°C in 0.5°C resolution
Temp. accuracy : +/ - 1°C at 20°C
Temperature Control : 7°C to 30°C in step of 0.5°C
Span : 1,2,3 or 4°C
Air conditioner cycle time : 3 minutes
Operation temperature : 0°C to 40°C
Storage temperature : - 10°C to 60°C
(Remove Link!!!)
Selectable Volt Free
Inst ruction Ma nual
It is vital to connect the live into this terminal to
avoid overloading of the jump wire.
