Danfoss FH-WS Datasheet
Also see for FH-WS: Instructions
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VDSGA122 © Danfoss 03/10Data sheet FH-WSElectronic Room Thermostat1Application:OrderingInformation:Accessories:Technical Specifications:The Danfoss FH-WS is a hard wired low voltageelectronic thermostat used with hydronicheating systems. FH-WS is typically used tocontrol the operation of electrical zone valveactuators in hydronic heating systems. Thethermostat senses air temperature and withthe addition of the optional floor sensor, itis capable of floor temperature limitation.Beneath the front cover flap is a LED thatilluminates when there is a heat demand.Limitation tabs are built-in to allow the settingof the minimum and maximum air temperature.The thermostat provides a cost effective andefficient means of controlling comfort within aheated room.Code No. Description Power Scale TemperatureRange Floor Sensor088H0024 FH-WSElectronicThermostat24 VAC,50-60Hz°C 6° - 30°COptional088H0034 °F 50° - 86°FCode No. Description088H0025 Optional floor sensor for FH-WS thermostat. Sensor provides minimum ormaximum regulation of floor temperaturePower Supply 24 VAC (50-60Hz)Mounting Surface mountedWiring Requirements 3-wire, 4-wire if optional timer is usedTemperature Range 50° - 86°F (6° - 30°C)Temperature Differential ± 1.75°FAmbient Temperature 32° - 122° (0° - 50°C)Freeze Protection 40°F (4°C)Min. / Max. Floor Setting 68° - 113°F (20° - 45°C)Night Setback Manual, (Automatic is possible with external timer -not supplied)Sensor FH-WS NTC, 30 ohms 68°F (20°C), with 10 ft (3m) cable**The floor sensor can be extended to a maximum length of 33 ft. A wire size of 18-gauge should be used as an extension to thefloor sensor.Temperature Limitation: The setting range for the thermostat can belimited by means of the blue and red limitationrings located beneath the front cover. By settingthem the temperature range is reduced. Thesettable limitation range is 50° - 86°F (6° -30°C).BlueRed |
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