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Manual Issue No. IM-T105VF-001

T105 RF

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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 Indicators

Power switch

Front Cover

Front 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

In st ru c t io n M a nu al

It is vital to connect the live into this terminal to
avoid overloading of the jump wire.

Summary of Contents for T105 RF

Page 1: ...d 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...

Page 2: ...t 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...

Page 3: ...ce 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...

Page 4: ...r 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 Mask...

Page 5: ...ne 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 R...

Page 6: ...ounting 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...

Page 7: ...ow 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...

Page 8: ...ert 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...

Page 9: ...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...

Page 10: ...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...

Page 11: ...r 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 curren...

Page 12: ...ended 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 i...

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