FHK14, RS485- bus-actuator heating-cooling-relays

Additionally available packaging sizes: 1 / 10 / 100

Heating-cooling relay, 1 + 1 close-up potential-free 4A / 250V AC, with DX technology. Bidirectional. Stand-by loss only 0.1 watts. Line installation device for assembly on DIN-EN 60715 TH35. 1 unit of division = 18mm wide, 58mm deep. Connection to the ELTAKO- RS485- bus. Cross-wiring bus and power supply with plug-in bridge. With the patented ELTAKO- Duplex technology, the normally potential-free contacts can still switch 50Hz in the zero pass when switching 230V AC voltage and thus drastically reduce wear. For this purpose, simply connect the N- conductor to the terminal (N1) and L to 1 (L) and / or N to (N2) and L to 3 (L). This results in an additional standby loss of only 0.1 watts. If both relays of the FHK14 are switched on, 0.4 watts are required. In case of failure of the supply voltage is defined off. This heating cooling relay evaluates the information of radio temperature controllers or sensors. It may be supplemented with window door contacts, motion detector, window access sensor FFG7B and radio aster. Alternatively to a radio temperature controller, the temperature information can also be obtained from a controller via set and actual values. In addition, there is the possibility to set the temperature by the controller and thus limit the setting range of the radio temperature controllers. Upper turning switch for the adjustable hysteresis: left-hand stop: smallest hysteresis 0,5º. Middle position: hysteresis 2,5º. Legal impact: largest hysteresis 4.5º. Between the two in 0.5 degrees. Medium turn switch for the control types: AUTO 1: with PWM control with T = 4 minutes (PWM = pulse width modulation). (Suitable for valves with thermoelectric actuator). AUTO 2: With PWM control with T = 15 minutes. (Suitable for valves with motor actuator). AUTO 3: With 2-point control. Lower switch for the operating modes: H: heating operation (contacts 1-2 and 3-4). K: cooling operation (contacts 1-2 and 3-4). HK: heating (contact 3-4) and cooling (contact 1-2). In the heating operation, the frost protection function is generally active. As soon as the actual temperature falls below 8 ° C, the selected mode of operation will be adjusted to 8 ° C. As long as one or more windows are open, the output is not available, provided that window / door contacts have been learned FTK or window access sensor FFG7B. However, the frost protection remains active in the heating operation. As long as all the trained motion detectors FBH have not reported any movement, it will be switched to downhill operation. In the heating operation, the temperature of the test is reduced by 2 ° and in the cooling operation by 2 °. As soon as a motion detector returns motion, it is switched to normal operation. If a FT4 is learned, the 4 keys are fixed with the following functions: At the top right: normal operation (can also be activated by a switch clock). Right bottom: Night-down operation by 4 °, in the cooling operation increase by 4 ° (can also be activated by a switch clock). Top left: 2 ° down operation, 2 ° increase in cooling operation. Left below: off (active in the heating operation, permanently off in the cooling operation). If at the same time motion detector and radio aster are learned, the last received telegram always applies. A motion detector thus switches off a lowering operation selected with the radio monitor when moving. The LED under the upper switch accompanies the learning process according to the operating instructions and displays control commands in operation by a short flash.