Skip Ribbon Commands
Skip to main content

T4221GB

T4221GB

A Radiator Thermostat is installed onto a Thermostatic Radiator Valve Body (TRV body). The combination of both, the Thermostatic Radiator Valve (T...

Product Description

A Radiator Thermostat is installed onto a Thermostatic Radiator Valve Body (TRV body). The combination of both, the Thermostatic Radiator Valve (TRV), controls the room temperature by adjusting the flow of hot water through a radiator.


TRVs are installed in water-based heating systems on the supply or, less commonly on the return connection of radiators. Radiator thermostats of this type with liquid sensor fulfill the European Standard EN 215 when used with certified Honeywell Home TRV bodies. Honeywell Home radiator thermostats with Honeywell Home (HW) M30 x 1.5 connection are suitable for all TRV body and radiator inserts with M30 x 1.5 connection and 11.5 mm closing dimension.

Technical Properties

EN215 certified Yes
TELL "I" certified Yes
Body-head connection M30 x 1,5
Temp. setpoint range 6 ... 26 oC
Materials
  • Handwheel, lid and socket made of plastic (black or white) or metal-plated (chromed or brushed)
  • Socket, support cage and spindle assembly made of plastic
  • Sensor filled with liquid
  • Connection nut made of nickel- or chrome-plated brass
Features
  • Conforms with M30 x 1.5 connection to European standard EN 215
  • Equipped with liquid sensor
  • Modern ergonomical design
  • Compact size
  • Easy to clean
Sensing element internal
Temperature element liquid-filled
Closing dimension 11.5 mm
Zero-position No
Theft protection No
Colour chrome/chrome