T2000 Series
Thera-4 Design
RADIATOR THERMOSTATS IN COMPACT SIZE
PRODUCT DATA
Application
Thermostats are installed onto thermostatic valve bodies
(TRV bodies). The combination of thermostat and TRV body,
(TRV), controls the room temperature by regulating the flow
of heating water into a heat exchanger.
TRVs are installed in water-based heating systems at the
supply or, less commonly at the return connection of radiators
or other heat exchangers.
Thera-4 Design type thermostats conform to the European
Standard EN215 when used with Honeywell TRV bodies
according to table 2 on page 3.
Thera-4 Design with M30 x 1,5 connection are suitable for
all Honeywell TRV bodies and radiator inserts as well as
other TRV bodies and radiator inserts with M30 x 1,5 connection and 11,5 mm closing dimension.
Thera-4 Design-DA with Danfoss snap connection are
suitable for TRV bodies and valve inserts with a Danfoss RA
type compatible snap connection.
Design
The radiator thermostat consists of:
• Handwheel with lid and socket
• Sensor with support cage
• Spindle assembly
• Connection nut
Materials
• Handwheel, lid and socket made of plastic, white to
RAL9016
• Support cage and spindle construction made of plastic
• Sensor filled with liquid
• Connection nut made of brass, nickel-plated – for M30x1,5
connection
• Connection nut made of plastic, white to RAL 9016 – for
DA version
Features
• Thera-4 Design with M30 x 1.5 connection conforms to
European standard EN215
• With liquid sensing element
• Modern design
• Compact size
• Easy to clean
• Easy to use range stops
Specifications
Thermostat connection
Setpoint range
Temperature range
Closing dimension
NOTE: Zero-position is also thermostatically controlled –
when temperature falls the TRV may open.
• M30 x 1,5
• Danfoss snap connection
• 0 - 7 - 1..5 (with zero-position)
• 7 - 1..5 (without zero-position)
With zero-position (‘0’):
1...28°C (34...82°F)
Without zero-position:
6...28°C (43...82°F)
11,5 mm (Thera-4 Design)
THERA-4 DESIGN (T2000 SERIES)
Dimensions
Fig. 1. Thera-4 Design with internal sensor
Table 1. Dimensions
Item H closed H open Ø
Fig. 1 and Fig. 2 73 79 49
All dimensions in mm if not stated differently.
Accessories
Theft-protection ring, white
TA6900A001
Screwdriver for theft-protection ring
TA6900B001
Range stops, 10 blue and 10 red
TA3000C001
Range stops, 20 white
TA3000C002
Range stops, 20 chrome
TA3000C003
Cover ring, white
For M30x1,5 connection only TA1000A001
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