Technical Data2108Servicechilled, hot water, up to 60% glycolFlow CharacteristicA-port equal percentage, B-port modified for constant common port flowControllable Flow Range75°Size [mm]0.5” [15]End FittingNPT female endsBodyforged brass, nickel platedBallstainless steelStemstainless steelStem PackingEPDM (lubricated)SeatTeflon® PTFESeat O-ringEPDM (lubricated)Characterized DiscTEFZEL®Body Pressure Rating [psi]600Media Temperature Range (Water)0°F to 250°F [-18°C to 120°C]Max Differential Pressure (Water)50 psi (345 kPa)Close-Off Pressure200 psiCv3 Weight0.7 lb [0.3 kg]Leakage0% for A to AB, <2.0% for B to ABServicingmaintenance freeFlow PatternApplicationThis valve is typically used in air handling units on heating or cooling coils, and fan coil unit heating or cooling coils. Some other common applications include Unit Ventilators, VAV box re-heat coils and bypass loops. This valve is suitable for use in a hydronic system with variable or constant flow.Suitable Actuators Non-SpringSpringB312TR, LR, NRB(X)TFB(X), LFDimensions (Inches [mm])H1EFBADCH2LRB, LRXABCDEFH1H28.5” [216]2.4” [61]5.19” [132]5” [127]1.3” [33]1.18” [30]1.1” [28]B312, 3-Way, Characterized Control ValveStainless Steel Ball and Stem800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 10/27/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Dimensions (Inches [mm])H1EFBADCH2LRQB, LRQXABCDEFH1H28.9” [226]2.4” [61]5.74” [146]5.16” [131]1.58” [40]1.18” [30]1.3” [33]Dimensions (Inches [mm])BAEFDCLFABCDEF7.9” [201]2.4” [61]5.67” [144]5.09” [129]1.82” [46]Dimensions (Inches [mm])ABDCEFTRABCDEF3.72” [95]2.4” [61]4.79” [122]4.21” [107]1.25” [32]1.2” [31]Dimensions (Inches [mm]) DCBAEFNRB N4, NRX N4ABCDEF11.36” [289]2.4” [61]7.25” [184]6.67” [169]3.15” [80]Dimensions (Inches [mm])BACDEFTFRB, TFRXABCDEF6.59” [167]2.4” [61]4.9” [124]4.32” [110]1.53” [38]B312, 3-Way, Characterized Control ValveStainless Steel Ball and Stem800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 10/27/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Technical Data286141Power Supply24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%Power Consumption Running2.5 WPower Consumption Holding1.2 WTransformer Sizing5 VA (class 2 power source)Electrical Connection18 GA plenum rated cable with 1/2” conduit connector protected NEMA 2 (IP54) 3ft [1m] 10ft [3m] and 16ft [5m]Overload Protectionelectronic thoughout 0° to 90° rotationOperating Range Y0 TO 20 V phasecut control is only for the positive part of the sine wave (max. of 10 volts)Input Impedance8000 Ω (50mW)Feedback Output U2 to 10 VDC, 0.5 mA maxAngle of Rotation90°Direction of Rotation (Motor)reversible with built-in switchPosition Indicationintegrated into handleManual Overrideexternal push buttonRunning Time (Motor)90 sec (default), Optional (90 or 150 sec)Ambient Temperature Range-22°F to 122°F [-30°C to 50°C]Storage Temperature Range-40°F to 176°F [-40°C to 80°C]HousingNEMA 2, IP54, UL enclosure type 2Agency Listings†cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/ECNoise Level (Motor)<35 dB (A) Servicingmaintenance freeQuality StandardISO 9001†Rated Impulse Voltage 800V, Type of Action 1, Control Pollution Degree 2.LRX24-PCModulating, Non-Spring Return, 24 V, 0 to 20 V Phasecut800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 08/14/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Wiring DiagramsProvide overload protection and disconnect as required.Actuators may be connected in parallel. Power consumption and input impedance must be observed.Actuators may also be powered by 24 VDC.Only connect common to negative (-) leg of control circuits. Blk (1) CommonRed (2) + HotPnk (6) C1 InputOrg (5) U OutputControl Signal(+)0 to 10 V Phasecut(–)Feedback Signal(+)2 to 10 VDC(–)LineVolts12324 VAC Transformer5Phasecut ControlLRX24-PCModulating, Non-Spring Return, 24 V, 0 to 20 V Phasecut800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 08/14/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Next >