TERMORETT TRV 300 1-10-5 - TA Hydronics

Technical description
Application:
Heating installations
Arrangements:
Regulating
Shut-off
Maximum and minimum restriction
Nominal temperature range:
See each product
Temperature:
Max. ambient temperature: 50°C
Min. ambient temperature: -25°C
Stroke:
0.22 mm/K
Heat transfer from inlet water:
Thermostatic head with integral sensor and thermostatic head
with remote setting: 0.4K
Thermostatic head with remote sensor: 0.3K
Replacement thermostatic head M28x1,5: 0.8K
TERMORETT TRV 300 1-10-5
Thermostatic heads 2002.11
Time to close:
Thermostatic head with integral sensor 24 min
Thermostatic head with remote sensor:
Horizontally fitted sensor 12 min
Vertically fitted sensor 15 min
Hysteresis:
0.2K
TOUR & ANDERSSON AB
Certification of Registration
Number 2125 and 2125 M
Certified by SP
QUALITY AND ENVIRONMENT SYSTEM
Marking:
Thermostats are marked with TA and, where applicable, with
the CEN symbol.
Colour:
White
Materials:
Plastic parts of ABS, acetal and nylon. Sensor element
contains ethyl acetate liquid.

Thermostatic head
With locking ring
With two locking screws
Allen key 2 mm
Protective model
TA No Temperature range
50 340-028 6-28°C
TA Nr Temperature range
50 341-028 6-28°C
TA Nr Temperature range
50 343-028 6-28°C
TA No Temperature range
50 370-026 8-26°C
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Thermostatic head with remote sensor
With locking ring
With two locking screws
Allen key 2 mm
TA No Temperature range Capillary tube length
50 340-127 6-27°C 1,25 m
50 340-227 6-27°C 2 m
50 340-527 6-27°C 5 m
50 340-827 6-27°C 8 m
TA No Temperature range Capillary tube length
50 341-227 6-27°C 2 m
TA No Temperature range Capillary tube length
50 343-227 6-27°C 2 m
To install the capillary tube in electric installation tube. Note: Tube without bends; use minimum 25 mm diameter. Tube with
bends; use minimum 32 mm diameter.
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Thermostatic head with remote setting
Thermostatic head with remote setting and remote sensor
To install the capillary tube in electric installation tube. Note: Tube without bends; use minimum 25 mm diameter. Tube with
bends; use minimum 32 mm diameter.
Pocket tube and heat transfer cradle - see Accessories.
TA No Temperature range Capillary tube length
50 380-227 8-27°C 2 m
50 380-527 8-27°C 5 m
50 380-827 8-27°C 8 m
TA No Temperature range Capillary tube length
50 382-227 8-27°C 2 m x 1,5 m
Thermostatic head with remote sensor for pocket tube or heat transfer cradle
TA No Temperature range Capillary tube length
50 364-201 20-50°C 2 m
50 364-202 40-70°C 2 m
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Replacement thermostatic head M28
Handwheel
TA No Temperature range
50 310-028 6-28°C
TA No
50 399-003
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Function
TRV 300
When the ambient temperature rises above the set value of the thermostat, the fluid in the sensor expands and starts to close the
valve.
When the ambient temperature falls below the thermostat‘s set value, the fluid in the sensor contracts and the return spring in the
valve starts to open the valve. When set to the frost protection position (*), the valve opens at a temperature of about 6°C in order
to prevent the heating system from freezing.
NB:
If the TRV 300 with integral sensor is fitted vertically to a valve, with the sensor upwards, it may be affected by the heat from the
pipe below and therefore close too early.
In such cases, a thermostatic unit with a remote sensor should be used, with the sensor placed immediately beneath the radiator
if possible or, if not, in the centre of the room.
The scale on the thermostat represents a temperature change of 4°C between each numeral. Each mark on the scale represents
a 1°C change.
Thermostatic head with remote sensor for pocket tube or heat transfer cradle
When the water temperature rises above the thermostat’s set value, the thermostat start to close the valve.
When the water temperature falls below the set value, the return spring in the valve start to open the valve.
Maximum temperature restriction
Set the index opposite to the maximum room temperature required. E.g. number 3 corresponding to 20°C room temperature.
1. Put the restriction pin in a little way opposite to number 5 to mark the correct pin position. Close the thermostat a little by turning
it clockwise.
2. Fully insert the restriction pin.
3. Open the thermostat by turning it anti-clockwise and check that the index stops at a position corresponding to desired room
temperature.
Nominal temperature range
The specified temperatures apply at the nominal lift height in accordance with CEN. Under normal operating conditions, the set
temperature will be maintained with a maximum deviation of ±1K.
Setting scales
The closing temperature is normally 2K higher than ambient temperature.
Thermostatic head with integral sensor / remote sensor
The various settings give approximately the following room temperatures:
Thermostatic head, protective model
The various settings give approximately the following room temperatures:
Thermostatic head with remote setting / remote setting and remote sensor
The various settings give approximately the following room temperatures:
Thermostatic head with remote sensor for pocket tube or heat transfer cradle
The settings produce approximately the water temperatures shown on the thermostatic head.
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Accessories
Setting key
For thermostatic head, protective model
Locking ring
For thermostatic head with integral/remote sensor
Key regulator
4 mm allen key
Restriction pin
For thermostatic head with intergral/remote sensor
Pocket tube for remote sensor
For thermostatic head 50 364-201/-202
TA No
50 370-001
TA No
50 350-006
TA No
50 399-006
TA No
50 340-001
TA No
50 364-200
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Heat transfer cradle for remote sensor
For thermostatic head 50 364-201/202
Adapter M28-M30
TA No
50 364-203
TA No
50 357-530
Tour & Andersson retains the right to make changes to its products and specifications without prior notice.
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