User guide

13-3
Radiator Thermostats
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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 fulfill the European Standard EN 215 when used with certified
Honeywell TRV bodies.
• 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.
For warm water heating systems
• on thermostatic radiator valve bodies, or
• on compact radiator valve inserts.
Thera-200 Design
Thera-200 Design theft-protected
Thera-200 Design (T4000 Series) Radiator Thermostat
Approvals Conforms with M30 x 1.5 connection to European standard
EN215
Body-head connection M30 x 1,5
Closing dimension 11,5 mm
Temp. element place internal
Temperature element liquid-filled
Temp. setpoint range 6 ... 26
o
C
Temperature scale 1..6
Zero-position no
Colour Type
white/chrome T4021
white/chrome T4021GB
black/chrome T4321
chrome/chrome T4221
chrome/chrome T4221GB
brushed/brushed T4111
Colour Type
white/chrome T4021V1