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.

Honeywell radiator thermostats with Honeywell (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. Radiator Thermostats of this type with snapring (DA) type connection are suitable for TRV bodies and valve inserts with Danfoss (RA) type compatible snap connection. Radiator Thermostats of this type with Herz (Hz) type connection are suitable for TRV bodies and valve inserts with Herz M28 x 1.5 connection and 9.5 mm closing dimension.

Main features

• With connection thread M30 × 1,5 they comply with EN215
• Sensor filled with liquid or wax
• Simple range limitation
• Version with zero position or only with frost protection

Installation example

Location of separate sensor