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 Data2463Power Supply24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10%Power Consumption Running3.5 WPower Consumption Holding1.3 WTransformer Sizing6 VA (class 2 power source)Electrical Connectionscrew terminal (for 26 to 14 GA wire), 1/2” conduit connectorOverload Protectionelectronic throughout 0° to 95° rotationOperating Range Y2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500 Ω, 1/4 W resistor), variable (VDC, floating point, on/off)Input Impedance100 k Ω for 2 to 10 VDC (0.1 mA), 500 Ω for 4 to 20 mA, 1500 Ω for PWM and on/offFeedback Output U2 to 10 VDC, 0.5 mA max, VDC variableAngle of RotationMax. 90°, adjustable with mechanical stopDirection of Rotation (Motor)reversible with built-in switchPosition IndicationpointerManual Overrideexternal push buttonRunning Time (Motor)150 secAmbient Humidity5 to 95% RH non condensing (EN 60730-1)Ambient Temperature Range-40°F to 176°F [-40°C to 80°C]Storage Temperature Range-22°F to 122°F [-30°C to 50°C]HousingNEMA 4X, IP66/67, UL Enclosure Type 4Housing MaterialUL94-5VAAgency Listings†cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EC and 2006/95/ECNoise Level (Motor)<45 dB (A) Servicingmaintenance freeQuality StandardISO 9001†Rated Impulse Voltage 800V, Type of action 1.AA, Control Pollution Degree 3NRX24-MFT-T N4NEMA 4X, Modulating Control, Non-Spring Return, 24 V, Multi-Function Technology®800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 11/30/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Wiring DiagramsINSTALLATION NOTESProvide 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.A 500 Ω resistor (ZG-R01) converts the 4 to 20 mA control signal to 2 to 10 VDC.For triac sink the Common connection from the actuator must be connected to the Hot connection of the controller. Position feedback cannot be used with a triac sink controller; the actuator internal common reference is not compatible.IN4004 or IN4007 diode. (IN4007 supplied, Belimo part number 40155).16Actuators are provided with a numbered screw terminal strip instead of a cable.Meets cULus requirements without the need of an electrical ground connection.!WARNING! LIVE ELECTRICAL COMPONENTS!During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury. Blk (1)Red (2)Wht (3)Org (5)LineVoltsPositionFeedback VDC(+)(–)2318Common+ Hot Y InputU Output 24 VAC Transformer1AOn/Off LineVolts (–) (+) (1) Common (2) + Hot (3) Y Input (5) U Output Position Feedback VDC 121101116Floating Point 24 VAC Transformer (AC Only) (–)(+)LineVolts 500 Ω1/4 wattControl Signal VDC / mA2351817Blk (1)Red (2)Wht (3)Org (5)Common+ HotY InputU Output 24 VAC TransformerAVDC/mA Control Functions0%50%100%Control mode acc. to Y1MinMidMaxNormalabcOrg (5) 24 VAC Transformer (AC Only) U Output15Blk (1) CommonRed (2) + Hot Pnk (4) Wht (3) (–)(+)LineVoltsBCAVDC / mAControl Signal Y2 Input Y1 Input127 182Override ControlNRX24-MFT-T N4NEMA 4X, Modulating Control, Non-Spring Return, 24 V, Multi-Function Technology®800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 11/30/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Next >