RAS-D2 radiator thermostats are designed for use in 2-pipe domestic heating systems like designer radiators or towel rails. All RAS-D2 Combi Packs comprise an RA-FS bi-directional valve and a RAS-D2 sensor designed for 2-pipe heating systems. The valves have a ½” BSP (R½”) tailpiece connection to the radiator and include 8mm, 10mm and 15mm compression fittings to connect the valve to the pipework. The valve bodies are reversible and bi-directional and include a flow-selectable feature to ensure trouble-free installation without any risk of water hammer. The valve is supplied with a protective cap, which can be used for manual regulation during the construction phase. The cap must not be used as a manual shut of the device. RAS-D2 sensors incorporate a “Frost Protection” setting and a “Positive Off” feature for maximum user flexibility. The temperature range is from 8°C to 28°C SAVE UP TO 40% ON YOUR HEATING BILL: The installation of a room thermostat and radiator thermostats can reduce energy bills by as much as 40%. Tests carried out at the University of Salford in their Energy House facility showed that the costs of running a heating system with a full set of temperature controls were 40% less than the same system operated with only a timer. The tests also showed that individual room temperature controls (TRVs) were necessary for the system to maintain balanced temperatures around the house. If you are about to change your boiler or if you have old radiator thermostats it is really important to install new heating controls and radiator thermostats. It will help you to reduce heating costs without compromising comfort. EXCELLENT COMFORT: The RAS-C2 6040 provides excellent comfort. So if you are struggling with cold radiators and want to improve the comfort RAS-C2 6040 is an excellent choice. It reacts twice as fast to a 1-degree change in room temperature compared to cheaper wax-filled radiator thermostats on the market, which also makes it a great choice for radiators in your private home. DURABLE RADIATOR THERMOSTAT THAT LASTS - With simple maintenance, Danfoss thermostatic radiator thermostats will function flawlessly for many years. Danfoss comply with the highest quality standards in the market. Our Sensors are produced in Denmark using a highly automated production process that prevents faulty products. For use in domestic heating systems with towel radiators or standard radiators Specifications: Connection type to valve: RA Design: Straight RLV type: RLV-D Sensor design: RAS-D2 Sensor media: Liquid Sensor setting temperature [°C] [Max]: 28 °C Sensor setting temperature [°C] [Min]: 8 °C Sensor type: Built-in sensor Type: RAS-D2 + Bidir + RLV Valve size: 10/15 mm Valve type: Bidir Box Contains: 1x RAS-D2 sensor 1x RA-FS 15 mm bi-directional straight valve 1x lockshield valve with 10/15 mm fittings 1x Allen key