User manual HONEYWELL T855 DATASHEET

[. . . ] RADIATOR THERMOSTAT WITH REMOTE SETPOINT REDUCTION PRODUCT DATA T855 Remote Thermostat-EL Application The temperature of different rooms is controlled individually and energy is saved. [. . . ] Thermostats of this type with M30 x 1. 5 connection are suitable for all Honeywell TRV bodies and radiator inserts, all Honeywell valve series M, as well as other TRV bodies and radiator inserts with M30 x 1. 5 connection and 11. 5 mm closing dimension. 3 2 4 5 1 Design The radiator thermostat consists of: · Handwheel with base · Heat element · External sensor with capillary tube, cage, spindle assembly and union nut Materials · Handwheel, base and cage made of plastic, white according to RAL9016 · Connection nut made of nickel-plated brass · Capillary tube made of nickel-plated copper Honeywell Subject to change 0 Features · Remote reduction of set temperature by applying a voltage of 12 to 24 V for a reduction of 5. . . 13K · Contains a liquid-filled sensing element with excellent control characteristic · Large-area temperature receptivity · Blocking, limiting and narrowing of setting range possible Specifications Thermostat connection Setpoint range Temperature range Closing dimension Capillary tube length Capacity Temperature reduction Cable connection NOTE: M30 x 1. 5 0 - - 1. . 5 1. . . 28°C (34. . . 82°F) 11. 5 mm 2m 25 mW/K 13K at 24 V AC/DC 0. 14 to 0. 5 m2 Zero-position is also thermostatically controlled when temperature falls the TRV may open. EN0H-2012GE25 R1206 T855 REMOTE THERMOSTAT-EL Function Radiator thermostats maintain the set room temperature automatically. The temperature in every room is controlled reliably without need of an external energy source according to your requirements. The air current flowing around the sensor ensures that the set temperature is maintained: if the temperature rises, the sensor inside the thermostatic valve head expands and the supply of water to the radiator is throttled. If the temperature drops the sensor contracts and opens the thermostatic valve accordingly. This means that the opening for the water is changed according to the movement of the sensor through the valve cartridge in the valve seat. The valve only allows as much water into the radiator as is necessary to maintain the set room temperature. Please Note: · To avoid stone deposit and corrosion the composition of the medium should conform with VDI-Guideline 2035 · Additives have to be suitable for EPDM sealings · System has to be flushed thoroughly before initial operation with all valves fully open · Any complaints or costs resulting from non-compliance with above rules will not be accepted by Honeywell · Please contact us if you should have any special requirements or needs Dimensions and Ordering Information Fig. Dimensions NOTE: NOTE: All dimensions in mm unless stated otherwise. Because of the cable terminals at the back the Remote Thermostat-EL has to be installed onto a cable duct. Temperature reduction 5K at 8K at 11K at 13K at 12 V AC/DC 16 V AC/DC 20 V AC/DC 24 V AC/DC Table 1. [. . . ] Subject to change · All rights reserved Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland or by its Authorized Representative. [. . . ]