TRV 300 RADIATOR VALVES

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1 RADIATOR VALVES THERMOSTATIC HEADS Placed on radiator valves, these self-acting thermostatic heads for adjusting temperature are reliable, accurate, and long-lasting. LIQUID FILLED SENSOR ELEMENT For higher closing power, reduced maintenance costs and trouble-free operation. REMOTE SENSOR OPTION For total accuracy. TEMPERATURE LIMITATION Set maximum and minimum temperatures, helping to reduce running costs.

2 TECHNICAL DESCRIPTION Application: Heating systems Functions: 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 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 Materials: Plastic parts of ABS, acetal and nylon. Sensor element contains ethyl acetate liquid. Colour: White Marking: Thermostats are marked with TA and, where applicable, with the CEN symbol. 2

3 C With locking ring C With two locking screws Allen key 2 mm C Protective model C 3

4 THERMOSTATIC HEAD WITH REMOTE SENSOR Capillary tube length C 1,25 m C 2 m C 5 m C 8 m With locking ring Capillary tube length C 2 m With two locking screws Allen key 2 mm Capillary tube length 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. THERMOSTATIC HEAD WITH REMOTE SETTING Capillary tube length C 2 m C 5 m C 8 m 4

5 THERMOSTATIC HEAD WITH REMOTE SETTING AND REMOTE SENSOR Capillary tube length C 2 m x 1,5 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. THERMOSTATIC HEAD WITH REMOTE SENSOR FOR POCKET TUBE OR HEAT TRANSFER CRADLE Pocket tube and heat transfer cradle - see Accessories. Capillary tube length C 2 m C 2 m REPLACEMENT THERMOSTATIC HEAD M28 Ø C M28 HANDWHEEL

6 ACCESSORIES Setting key For thermostatic head, protective model Locking ring For thermostatic head with integral/remote sensor Key regulator 4 mm allen key Adapter M28-M Restriction pin For thermostatic head with intergral/remote sensor

7 Pocket tube for remote sensor For thermostatic head / G1/2 Heat transfer cradle for remote sensor For thermostatic head / 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. 7

8 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. Tour & Andersson retains the right to make changes to its products and specifications without prior notice TRV