230V Electronic Weekly Programmable Gas Boiler Room Thermostat for Underfloor Heating Control
ST27 is a wired room thermostat with an LCD and push buttons, designed for electric, underfloor and water heating systems. It carries 7 day, 5/2 day and 24 hour programmes with straightforward daily on and off settings, and switches up to 8(2)A at 230 VAC. It is used for bedrooms, hotel rooms and kitchens where the heating should follow an occupancy pattern rather than run continuously.
Key Benefits
- 8(2)A 230 VAC maximum load drives electric heating circuits as well as boiler relays
- Three programme modes cover domestic, hotel and commercial occupancy patterns
- Heat / Cool / Off system switch makes it usable on year round installations
- 0.5 C setpoint resolution across 5 C to 35 C for fine comfort control
- 2W power consumption keeps it within tight control circuit budgets
Problems It Solves
- Electric heating circuits that exceed the contact rating of a small stat
- Rooms heated overnight when nobody is present
- Separate product ranges for water and electric heating control
- Programmes that are too complex for a guest or tenant to follow
Who It Is For
- Underfloor and electric heating system suppliers
- Hotel and apartment developers specifying scheduled heating
- Contractors fitting mixed water and electric heating in one building
- OEM buyers wanting a programmable wired stat with a high contact rating
Technical Features
- Wired 230V room thermostat with LCD and push buttons
- 7 day, 5/2 day and 24 hour programmable
- Measuring range 0 C to 40 C in 0.5 C, setpoint range 5 C to 35 C in 0.5 C
- Display accuracy +/-1 C at 20 C
- Maximum load 8(2)A 230 VAC
- Switchable voltage 24 V AC/DC up to 250 V AC at 50 Hz, 6 A with 2 A inductive load
- Heat / Cool / Off system switch, NTC sensor
- Anti-flammable PC and ABS housing, CE and RoHS, 2W consumption
Specifications
| Model | ST27 |
| Programmability | 7 Day, 5/2 Day and 24 hour Programmable |
| System Switch | Heat/Cool/Off |
| Power Supply | 2*AAA size battery |
| Switchable Voltage | 24 V AC / DC,…250 V AC; 50 Hz |
| Switchable Current | 6 A (2 A inductive load) |
| Maximum Load | 8(2)A 230 VAC Max |
| Temperature Range | 0°C-40°C in 0.5°C |
| Setpoint Range | 5°C-35°C in 0.5°C Power Consumption 2W |
| Display accuracy | ±1°C (at 20°C) |
| Sensor | NTC |
| Backlight | White/Customized |
| Material | Anti-flammable PC +ABS |
| Dimension | 119 x 80 x 26 mm |
| Installation | Mounts on wall or junction box |
| Consumption | 2W |
| Application | Home Office |
| Type | Floor Heating Parts |
| Certification | CE ROHS |
| Warranty | 1 Year |
| After-sale Service | Free spare parts, Return and Replacement |
Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.
Application Scenarios
- Bedrooms on water underfloor heating with night setback
- Hotel rooms where the schedule follows check-in patterns
- Kitchens and utility rooms on electric heating circuits
- Home offices heated only during working hours
Quality Control
- High voltage insulation test on every 230V unit
- Programme and clock accuracy verified during the functional test
- Contact tested at the rated 8(2)A load
Customisation Options
- Free spare parts arrangement can be agreed for project orders
- Backlight white or customised, logo printed on the front
- Preset programme written for the buyer's typical building
- 3D model design service for housing changes on ODM projects
How It Compares
Installing And Commissioning
Step 1
Isolate the 230V circuit and confirm it is dead before opening the backplate
Step 2
Mount at about 1.5 m on an internal wall, clear of the heat emitter
Step 3
Land live, neutral and the switched conductor, observing the 8(2)A limit
Step 4
Select 7 day, 5/2 day or 24 hour mode and enter the daily on and off times
Step 5
Set the system switch to Heat and confirm the zone responds within the differential
230V Electronic Weekly Programmable Gas Boiler Room Thermostat for Underfloor Heating Control: Buyer Questions
Can the ST27 control electric underfloor heating directly?
It switches up to 8(2)A at 230 VAC. Check the mat or cable load against that figure; above it, switch through a contactor.
What programme modes are available?
7 day, 5/2 day and 24 hour, with on and off settings for each day.
Is there a cooling mode?
Yes. The system switch offers Heat, Cool and Off.
What is the sensor type?
NTC, with a display accuracy of +/-1 C at 20 C.
Do you offer housing changes for an ODM project?
Yes. Our project capability includes graphic design and 3D model design for the housing.
What after sales support comes with it?
Free spare parts, return and replacement, and online technical support. Warranty is 1 year.
Related Products
Wired Thermostat
LCD Gas Boiler 230V Non-programmable Digital Wired Gas Boiler Heating Thermostat for HVAC System
View specification
Wired Thermostat
220V Non-Programmable Digital Heating Wired Gas Boiler Thermostat with Battery Supply
View specification
Wired Thermostat
230V Dial Button Wired Non-programmable Gas Boilers Room Thermostat for Heating
View specification
Wired Thermostat
Wired Central Air Conditioner Room Thermostat
View specificationWhere This Product Fits
Quote The 230V Electronic Weekly Programmable Gas Boiler Room Thermostat for Underfloor Heating Control
Send us the quantity, the destination market and any branding or firmware changes you need. Samples ship within 30 days and bulk orders in 15 to 45 days.