Technical Data307652Servicechilled, hot water, up to 60% glycolFlow CharacteristiclinearSize [mm]0.5” [15]End FittingSweatBodyforged brassBallchrome plated brassStembrassSeatTeflon® PTFESeat O-ringEPDM (lubricated)Body Pressure Rating [psi]360Media Temperature Range (Water)36°F to 212°F [2°C to 100°C]Maximum Allowable Operating Temperature212°F [100°C] *Media Temperature Limit250°F [121°C] *Max Differential Pressure (Water)40 psiClose-Off Pressure75 psiCv2.7 Weight0.4 lb [0.2 kg]Leakage0%Servicingmaintenance free* If temperature exceeds 212°F operating range due to a boiler control failure the valve will safely contain the hot water but manufacturers product warranty becomes invalid. Valve and actuator replacement is at the expense of others.Flow PatternY2Y1ApplicationThe QCV zone valves are suited for large commercial buildings where higher close-off and the ability to change flow is desired. Common applications include unit ventilators, fan coil units, VAV reheat coils, fin tube casing, radiant panels and duct coils. The valve fits in space restricted areas and can be assembled without the use of tools.Suitable Actuators Non-SpringElectronic Fail-SafeZ3050QS-HCQCQKDimensions (Inches [mm])DCBAEFABCDEF4.5” [114]2.05” [52]3.83” [97]2.71” [69]1.02” [26]Z3050QS-H, 1/2”, ZoneTight Valve800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 02/21/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Dimensions (Inches [mm])DCBAEFABCDEF4.5” [114]2.05” [52]3.69” [94]2.56” [65]1.02” [26]Z3050QS-H, 1/2”, ZoneTight Valve800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 02/21/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Technical Data281366Power Supply24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%Power Consumption Running2.5 W Power Consumption Holding0.5 W Transformer Sizing5 VA (class 2 power source)Electrical Connection3ft [1m], 18 GA plenum cable with 1/2” conduit connectorOverload Protectionelectronic thoughout 0° to 90° rotationOperating Range Yon/offAngle of Rotation90°, adjustable with mechanical stopPosition IndicationpointerRunning Time (Motor)75 secRunning Time (Fail-Safe)60 secBridge Time2 sec delay before fail-safe activatesPre-charging Time5 to 20 secondsHumidity5 to 95% RH non-condensingAmbient Temperature Range35°F to 104°F [1.7°C to 40°C]Storage Temperature Range-40°F to 176°F [-40°C to 80°C]HousingNEMA 2Housing 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)max. 35 dB (A) Servicingmaintenance freeQuality StandardISO 9001Weight0.4 lb [0.2 kg]† Use flexible metal conduit. Push the listed conduit fitting device over the actuator’s cable to butt against the enclosure. Screw in conduit connector. Jacket the actuators input wiring with listed flexible conduit. Properly terminate the conduit in a suitable junction box. Rated impulse Voltage 800V. Type of action 1. Control pollution degree 3.CQKB24-LLOn/Off, Electronic-Fail-safe,24V800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 02/21/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Wiring DiagramsINSTALLATION NOTESAActuators with appliance cables are numbered.Actuators may be connected in parallel. Power consumption and input impedance must be observed.Actuators may also be powered by 24 VDC.Actuators with plenum cable do not have numbers; use color codes instead.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 CommonRed Hot + Line VoltsA2318FunctionsA0%100%100%Fail PositionOpen24 VAC TransformerCQKB24-LLOn/Off, Electronic-Fail-safe,24V800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEANDate created, 02/21/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.Next >