Honeywell Home T3 PROGRAMMABLE THERMOSTAT
PRODUCT SPECIFICATION SHEET
The T3, T3M & T3R thermostats are designed to provide automatic time and temperature control of heating systems in homes and apartments. The T3 It’s compatible with 24‐230V on/off appliances such as gas boilers, combi‐boilers and heat pump. Also works with zone valve applications but not with electric heating (240V). The T3M and T3R versions support also OpenTherm® appliances.
The T4 and T4M are for wired on the wall installations and the T4R for wireless installations. T3R exist of a thermostat and a Receiver box.
The solution is designed with the installer in mind and includes a receiver module with mounting options for directly on the wall or on a wall box. Wiring can be from below or from the back by lifting the terminal platform, which makes installation quick and easy.
The thermostat has a large and clear fix segment display with a backlight, simple programming philosophy all to make it easier to install and very user-friendly.
The T3 product line is ideal for consumers who want to control their comfort remotely with a modern design, simple to program and easy-to-use product.
FEATURES
- Minimalistic and modern design makes it easy to blend in any type of homes.
- Table stand or wall mounted thermostat options to fit new and replacement installations.
- Backlight for easier viewing in all light conditions.
- Factory programmed daily, or 5+2 default heating schedule.
- Schedule options with 4 independent set‐points to suit comfort needs.
- Set‐point temperature always displayed.
- OFF position has an integral frost protection setting at minimum 5 °C so that pipes in the house will never freeze.
- Alert messages to assist in fault finding.
- Timed override function allows to hold a targeted set point for 1 hour.
- Automatic time clock adjustment for “Daylight Saving Time”.
- Receiver box with clear LED indication and override button.
- On/Off or OpenTherm® (T3M) compatible control.
- User menu allows extra functions to be set at the discretion of the user:
- Heating schedule
- Date and time setting
- Optimisation Lock function
- OpenTherm® alerts (T3M only)
- Installer menu allows extra functions to be set at the discretion of the installer to match the homeowner’s applications and needs:
- Language selection
- Cycle rate
- Upper / Lower set point limit adjustment
- Minimum ON/OFF time
- Daily, weekly or 5+2 schedule option
- 4 periods a day
- Wired remote sensor
- Fail safe mode
- Clock format
- Daylight saving time change (DST)
- Temperature display offset
- Factory reset
- Binding (T3R only)
RECEIVER BOX INTERFACE 
SPECIFICATIONS
T3/T3M/T3R Thermostat
- Control form: Fuzzy Logic
- Room temperature display range: From 0 °C to 50 °C
- Dimensions (w x h x d): T3/T3M: 136 x 97 x 26 mm T3R (Wireless) 136 x 98 x 62 mm
- Time display: 24 hour or 12 hour AM/PM format
- Time keeping accuracy: +/‐ 10mins per year
- Program: 5+2 or daily schedule with 4 daily time and temperature level changes
- Time setting resolution: Program – 10 minute steps
- Sensing element: 10k(@25 °C) NTC thermistor
- Temperature Setting range: Program: 5 to 35 °C OFF : 5 °C
- Power: Powered by 2 x AA batteries
- Wiring: T3(wired) and T3M (Opentherm) terminal block capable of accepting wired up to 1.5 mm2
RF communication
- RF operation band: ISM (868.0‐868.6) MHz, 1% duty cycle
- Max, power: 25mW
- Protocol: Encrypted
- Comm. Range: 30m in the residential building environment
- Comm. Technology: short, high-rate transmissions to minimise air time and avoid collisions
- Receiver class R.E.D.: RX Cat 2 (ETSI EN300 220‐1 version 1.3.1)
Receiver box
- Power: 230VAC
- Electrical rating: 230V~, 50..60Hz, 0.5A to 5A resistance 0.5A to 3A inductive (0.6 pf)
24V~, 50..60Hz, 0.5A to 5A resistance 0.5A to 3A inductive (0.6 pf - Cycle rate: Selectable by application (see installer set up
- Wiring: Terminal block capable of accepting wires up to 1.5 mm2
- Wire access: From back via large wall box opening.
From the bottom with cable clamps. Mains wiring – left Low voltage wiring ‐ right - Dimensions (w x h x d):110 x 110 x 40 mm
- IP class: 30
Environmental and standards
- Operating temperature range: 0 to 40 °C
- Shipping and storage temperature: ‐20 to 55 °C
- Humidity range: 10 to 90% RH, non-condensing
- EMC:2014/30/EU
- LVD: 2014/35/EU
- R&TTE: 1995/5/EC
- Wire access :From back via large wall box opening
- ErP :Class IV (+2%), (EU) 811/2013 (T4)
Class V (+3%), (EU) 811/2013 (T4R) Class VI (+4%), (EU) 811/2013 (T4M)
Honeywell, declares that this thermostat is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU
To enter the Installer menu press
the button and then until the display changes (approx. after 3 secs)
| Specific Applications | Setting | What do you need to change? | ||
| CpH (cycle per hour) | Minimum on Time (min) | Note:
a. To change cycle per hour b. To change minimum ON time |
||
| Heating | Gas Boilers (30kW) | 6 | 1 | No action required |
| Oil Boiler | 3 | 4 | a. Set minimum ON time to 4 minutes.
b. Set cycle per hour to 3. |
|
| Thermal Actuator | 12 | 1 | Set cycle per hour to 12. | |
| Zone valve | 6 | 1 | No actions required | |
| Special Features | Description | |||
| Opentherm® | By connecting the T3M to an OpenTherm® appliance various specific data can be viewed. The data is depending on what the appliance is providing. | |||
| Heat range | The normal lower temperature limit of 5 °C can be increased up to 21 °C
to protect the inhabitants from cold. Useful if the inhabitants include the elderly, children or disabled. The normal upper temperature limit of 37 °C can be reduced down to 21 °C to save the homeowner energy. Useful if the homeowner rents to tenants. |
|||
| Schedule options | The thermostat has the 7 days by default, however it can be change to 7 days for different schedule each day of the week or 1 day for having the same schedule during the week | |||
| External temperature sensor (only for wired versions) | An external temperature sensor can be fitted, allowing the thermostat to control the temperature from another room or space, where it is inconvenient to locate the thermostat. It will read the remote sensor every 1 minute. The sensor can be connected up to 50 meters from the unit. Useful for commercial premises where the public may tamper with the product | |||
| Optimisation (optimum start, optimum stop and delayed start) | Optimum Start: learns how long it takes your system to reach the temperature you want. It turns on the heating system earlier to make sure it’s comfortable at the scheduled time.
Optimum Stop: Saves energy and money by switching off a little bit earlier than the normal programmed time. If the home is up to temperature, it will not notice the effect on the temperature, but will show a difference in the fuel bill.
Delayed start: Saves energy by slightly delaying the start of heating depending on the difference between the scheduled temperature and the actual room temperature. |
|||
| Clock setting | Change display format (default 24hr) and adjust time and date. | |||
| Temperature offset | If the Thermostat is located in a hot/cold location and cannot be moved because of wiring then the measured/ displayed temperature can be adjusted by +/‐ 3 °C. Useful if the homeowner wants the reading to match another appliance temperature display. | |||
| Binding (only for T4R) | Menu to bind the Thermostat and the Receiver box, test the RF signal strength of the radio communication and to clear an existing binding. | |||
| Reset | Reset the thermostat back to factory default settings, reset the schedule to default. | |||
| Failsafe | When the temperature sensor fails(T3,T3M) or the radio communication between the Thermostat and the Receiver box is lost the device will cycle the demand 20% On / 80% Off | |||
| Menu item | Default | What do you need to change? |
| 1LA:Language | 1=English | 1=English |
| 2CR:Cycle rate | 6 | 3,6,9,12 |
| 3OT:Min on time | 1 | 1,2,3,4 or 5 minutes |
| 4LL:Lower Temperature | 5 | 5 °C to 21°C |
| 5UL:Upper Temperature | 25 | 21°C to 35°C |
|
6SO:Schedule options |
5+2 |
1= 7 day (different schedule each day of the week) 2= 5+2 (weekday + weekend schedule) |
|
9LC:Fail safe mode |
0 |
0= Deactivated
1= Activated |
|
10BL:Backlight |
1 |
0= Deactivated
1= Activated (only on demand) |
|
11CL:Clock format |
0 |
0= 24h
1= 12h (AM/PM) |
|
12DS:Daylight saving time change |
1 |
0= Deactivate Daylight saving time change 1= Automatically change time during DST |
| 13TO:Temperature offset | 0 | ‐3°C to + 3 °C |
| 15SD: Restore schedule | 0 | 0
1= Reset the default schedule |
|
16FS: Restore factory settings |
0 |
0
1= Reset the device to factory settings |
| 17OP: Optimum Start | 0 | 0= Disable
1= Enable Optimum Start 2= Enable Delayed Start |
| 18OS: Optimum Stop | 0 | 0= Disable
1= Enable Optimum Start |
| 19LK | 1 | 1 = Partial Lock
2 = Full Lock |
INSTALLATION
To ensure your safety, always make sure the mains power is switched OFF before accessing wiring.
Before removing the old thermostat take a picture of the old thermostat’s wiring as a reference then proceeds to installation.
The T3 thermostat should not be placed near draughts, in direct sunlight or near heat sources. It should be at least 1.2 ‐ 1.5 meters from the floor.
Prepare Receiver Box (T3R only)
Needed during installation:
- Cable with 2 wires from the boiler to Receiver Box (R3H710RF0005).
- The Receiver Box requires 230V power.
Find a suitable location near the boiler. Leave at least 30cm distance from any metal objects including wall boxes and boiler housing.
Loosen the front screw to remove cover or tighten it when the cover is back in position.
Install Receiver Box (T3R only)
- Wall box or Rear wiring
- Surface wiring
- Replace cover
Complete installation(T3R)
Turn mains powers ON to the heating application and the receiver box
Install Thermostat(T3 and T3M only)
- Wall plate
Mount the back plate to the wall. Connect wires according to wiring diagrams.
- Surface wiring
Attach the front cover to the back plate. - Place thermostat
Fit the flap on to the thermostat
Power Up the Thermostat (T3 and T3R only)
Insert the batteries
Setup and Configuration
After power up, the year selection is displayed on the thermostat’s screen. Press + or – to adjust the date and time and press to confirm BINDING(T3R only)
The T3R thermostat wireless kit comes pre‐bound from the factory.
The binding operation described below is only required if:
- The T3 thermostat or the Receiver box is replaced
- The T3 thermostat or the Receiver box has incorrect or no binding data stored
To bind/rebind
Note: When the Receiver box has been bound before, first press with a small pin the pinhole for approximately 3 seconds to reset the binding, LEDs will flash amber for a moment.
- Put the Receiver box into binding mode by pressing the button for 3 secs.
The LED will flash amber. - Enable binding on the thermostat:
- Enter the binding menu by pressing and holding the for 3 secs and the pressing the – button.
Change parameter 14A to 1 and press
to confirm
- Enter the binding menu by pressing and holding the
- When binding is successful:
- They will appear on the thermostat’s screen.
The Receiver box status LED will show a steady green
- They will appear on the thermostat’s screen.
WIRING
WIRING (T3 and T3M only)
WIRING (T3R only) 
TROUBLESHOOTING – T3 and T3M only
| Problem Display | Possible Cause | Remedy |
| Thermostat display is blank | Batteries exhausted, installed incorrectly or tab hasn’t been removed | Unclip thermostat from wall and check battery installation ‐ replace batteries if necessary |
| Display shows (only for T3) | Battery power critically low | Unclip thermostat from wall and replace batteries immediately |
| Display shows | Faulty temperature sensor | Replace thermostat or check wiring to remote temperature sensor if fitted |
| Thermostat shoes heat demand but boiler doesn’t respond | a. Boiler water already at temperature
b. Faulty wiring connection |
a. Normal behaviour – wait for water temperature to drop
b. Check wiring at thermostat and boiler terminals |
TROUBLESHOOTING – T3R
| Problem Display | Possible Cause | Remedy |
| Thermostat display is blank | Batteries exhausted, installed incorrectly or tab hasn’t been removed | Unclip thermostat from wall and check battery installation ‐ replace batteries if necessary |
| Display shows (only for T3) | Battery power critically low | Unclip thermostat from wall and replace batteries immediately |
| Display shows | Faulty temperature sensor | Replace thermostat or check wiring to remote temperature sensor if fitted |
| Thermostat shoes heat demand but boiler doesn’t respond | a. Boiler water already at temperature
b. Faulty wiring connection |
a. Normal behaviour – wait for water temperature to drop
b. Check wiring at thermostat and boiler terminals |
| Problem Display | Possible Cause | Remedy |
| Thermostat display is blank | Batteries exhausted, installed incorrectly or tab hasn’t been removed | Pull thermostat from wall bracket or table stand and check battery installation
‐ replace batteries if necessary |
| Display shows | Battery power critically low | Pull thermostat from wall bracket or table stand and check battery installation
‐ replace batteries if necessary |
| Display shows | Faulty temperature sensor | Replace thermostat or check wiring to remote temperature sensor if fitted |
| Thermostat shoes heat demandbut boiler doesn’t respond | a. Boiler water already at temperature
b. Faulty wiring connection |
a. Normal behaviour – wait for water temperature to drop
b. Check wiring at thermostat and boiler terminals |
| Thermostat displays shows and Receiver Box LED is flashing RED | Wireless communication with Receiver Box is lost | Move thermostat to a location where wireless communication is reliable |
| Thermostat displays shows and Receiver Box LED is flashing OFF | Thermostat and Receiver Box not bound | Move thermostat to a location where wireless communication is reliable |
| Receiver BoxLED is flashing ORANGE | Receiver Box is in bind mode | Wait for bind mode to time out (3min) or bind a Thermostat |
ORDERING SPECIFICATION
| Description | Model | EAN code | Literature |
| T3 Wired Thermostat | T3H110A0066 | 5025121380553 |
All packaging contains a user guide and installation guide in English |
| T3 Wired Thermostat for OpenTherm Boilers |
T3H310A0045 |
5025121380492 |
|
| T3 Wireless Thermostat | Y3H710RF0053 | 5025121380546 | |
| Spare Receiver Box | R3H710RF0005 | 5025121380362 | |
| Spare Wireless Thermostat | T3H700RF0096 | 5025121380393 |
OpenTherm® ID’s (only for T3M)
| Menu item | Standaard | Wat wilt u aanpassen? |
| OT1: Low Load Control |
1= Enabled |
0= Disabled
1= Enabled |
| OT2: Control setpoint | 5 ‐ 99°C | |
| OT3: Supply water temperature | 5 ‐ 99°C | |
| OT4: Return water temperature | 5 ‐ 99°C | |
| OT5: Max. supply water temperature | 5 ‐ 99°C | |
| OT6: Hot water temperature | 5 ‐ 99°C | |
| OT7: Hot water setpoint | 5 ‐ 99°C | |
| OT8: Actual power | 0 – 99% | |
| OT9: Water pressure | 0.0 – 9.9 | |
|
OT10: OTC control |
0= Disabled |
0= Disabled
1= Enabled |
| OT11: OTC curve | 16 | 4‐40 |
|
OT12: Room compensation |
0= Disabled |
0= Disabled
1= Enabled |
PRODUCT NOTICE
Product(s) contains LEAD CAS‐Nr. 7439‐92‐1 and Diboron Trioxide CAS‐Nr. 1303‐86‐2 in article (s).
REACH ‐ Regulation: (EC) No 1907/2006 of 18 December 2006; Title IV, Article 33.(1).
SVHC – ECHA Decision ED/61/2018 of 20 June 2018; SVHC List of 27 June 2018.
Reference
Download Manual
Honeywell Home T3 PROGRAMMABLE THERMOSTAT PRODUCT SPECIFICATION SHEET
OTHER MANUAL
Honeywell Home T3 PROGRAMMABLE THERMOSTAT Installation Instruction
Honeywell Home T3 PROGRAMMABLE THERMOSTAT User Guide
Honeywell Home T3 PROGRAMMABLE THERMOSTAT PRODUCT SPECIFICATION SHEET
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