Hydronic Accessories ESP Zone Valve The Taco ESP is the most intelligent zone valve in the world. The unique patented technology in the ESP utilizes a microcircuit based logic to control a gear driven, capacitor powered actuator which drives a ball valve based body design. All this adds up to a zone valve that leads the industry in flow rate capacity, shutoff pressure rating, ease of installation, energy efficiency, diagnostic capability, and the number of valves (12) that can be used per standard 40 VA transformer. H YDRONIC C OMPONENTS & S YSTEMS ©Taco Catalog # 100-7.7 Supersedes: 100-7.7 Dated: 02/1/01 Effective Date: 08/1/03 Printed in USA The Taco ESP Zone Valve. TM Driven by reliability. The ESP thinks for itself. The heart of the ESP Zone Valve™ is the Energy Storage Principle. The ESP is a gear driven, capacitor powered valve. Its unique, patented technology replaces the typical spring with a Prostar Capacitor for returning the valve to its normal position. Moreover, the old style synchronous AC motor has been replaced with an exceptionally reliable high torque, high efficiency miniature motor. These Taco innovations replace two failure items, the synchronous motor and the spring, to deliver dependability you never thought possible. Inside the fashionably black box is a microprocessor that monitors the valve’s operations. When a thermostat calls, the processor makes sure the capacitor is fully charged, then sends power to the motor. The motor turns a set of gears that rotates the ball valve 90° to the Open position. Once at the Open position, the motor turns off. The LED remains lit as long as the thermostat is calling. Once the zone has been satisfied, the capacitor discharges a portion of its stored energy and the motor turns the ball valve another 90° to the Closed position. An on-board optical sensor continuously ensures the proper Full Open and Full Closed position of the ball. Universal thermostat compatibility. No matter the brand or style of thermostat hanging on the wall, the ESP works with them all. Now you can get all the features you want in a zone valve and a thermostat without having to worry about compatibility issues. Manual operation is a breeze. No need to worry about stripping gears or damaging the spring with the ESP. With the push of a button, the gears disengage and the valve can be rotated in any direction, to any position. Just release the button and the gears re-engage. What’s more, the valve automatically resets itself to the proper Manual Operation Button with Automatic Reset LED Indicator Light Plug-In Terminals Actuator Head Can Be Mounted In Either Direction Easy, One-Handed Removal Blowout-proof Stem Ball Valve Design, High Cv 125 PSI Shutoff Pressure Sweat or Threaded 1/2”, 3/4”, and 1” Bi-Directional Flow 3-Way Valve Option Smart for a lot of reasons. ball position once power is restored. So you can’t leave the valve open by mistake. Let there be light. Easy, easy, and easy. Plug-in screw terminals make the ESP a breeze to install and operate. The valve can be installed in any direction, in any orientation, and features a dependable 1/4 turn one-handed twist lock for easy operator removal. The actuator head is a snap to replace, and can be mounted to the valve body in either direction, great for tight baseboard jobs. Miniature Motor The external LED shows you the full functionality of the valve’s operation and thermostat status, making it a perfect companion to Taco’s line of electronic zone valve controls. Less is more. With the ESP, there are fewer parts to wear out, so the life of the valve is greatly increased. Microcircuit technology lowers the amp draw so you can install up to 12 valves per 40 VA transformer, or use a smaller transformer. Either way, you save on transformer costs. And because Gear Driven Optical Sensor Reduced Parts Application: A Closed Systems B Open Systems Size: 1/2" 050 3/4" 075 1" 100 Connection: Sweat Thread BSP Inverted Flare C T B F Valve Type: 2 2-way 3 3-way Revision Level A version for all of your needs. The high flow, low head loss characteristics of the ESP combined with its compact design and 125psi shutoff pressure rating makes the ESP the most flexible valve on the market today. No matter your application, there is an ESP Zone Valve to suit your needs. End Switch Contact Plug-In 4 Wire Screw Terminals or 18” Wire Leads LED Indicator Light Prostar Capacitor Valve Body Numbering System Valve Body there’s no bulky synchronous motor, the ESP has a lower profile to fit into tighter spaces. Last, the ESP features a universal actuator, so it fits all sizes of valves and reduces inventory. Actuator Numbering System Application: A LED Revision C LED* *For use with B style Level valves (i.e.V075C2B1) Valve Actuator Actuator Type: Normally Closed Normally Open Modulating Diverting N E M D Voltage: 24 VAC 024 Universal UPS Power Supply (24-277 VAC) Interface: W Wire Harness Q Quick Connect Wiring Inputs: 2 No End Switch 3 Open, Closed, Common 4 End Switch To order Body and Actuator as a complete assembly, drop the “A” from the Actuator. (Example:V075C2A2N024Q4A2) Note: Certain combinations of valves and actuators may not be available. Consult Taco price sheet or a Taco sales representative for current models offered. Quick Order Part Numbers ESP050C2-2 > 1/2" 2-Way, Sweat, 24 VAC, Normally Closed, 4 Input Quick Connects ESP075C2-2 > 3/4" 2-Way, Sweat, 24 VAC, Normally Closed, 4 Input Quick Connects ESP100C2-2 > 1" 2-Way, Sweat, 24 VAC, Normally Closed, 4 Input Quick Connects Submittal Data #101-090 Supersedes: Catalog 100-7.7 Dated: 02/1/01 Effective: 08/1/03 Product Specifications Maximum Operating Pressure Maximum Shutoff Pressure Fluid Temperature Range Service 300 PSI (2,100 kPa) 125 PSI (875 kPa) 20° to 240°F, (-7° to 115°C) @ 135°F (57°C) ambient Closed systems Hot and Chilled Water, up to 50% Glycol Full Open to Full Close (90° turn), 4 seconds Full Close to Full Open (90° turn), 6 seconds Drop-Tight Close-Off 24 VAC, 60 HZ, 0.54 Amps Do not exceed number of valves per transformer rating. Example: Do not use more than 12 zone valves per 40VA transformer. 12.84 Watts, 0.54 Amps Max 1.44 Watts, 0.06 Amps Max 0.5 Amps 3 Amps @ 24 VAC Ball Rotation Speed Seat Leakage Electrical Rating Power Consumption, Charging Power Consumption, Power On Heat Anticipator Setting End Switch Rating Materials of Construction, Actuator Body Gears High Performance Engineered Polymer High Performance Internally Lubricated Engineered Polymer Materials of Construction, Valve Body Stem Press Ring Ball Seat O-rings Forged Bronze Brass Brass Brass (Chrome Plated) Modified Teflon EPDM A Flow Coefficients and Maximum Close-Off Pressure VALVE SIZE 2-WAY Cv (Kv)/Ft. of PIPE EQUIV.* 3-WAY Cv (Kv)/Ft. of PIPE EQUIV.* CLOSE-OFF PSI (kPa) 1/2” 4.9 (4.3) / 9.5 1.5 (1.3) / 101 0-125 psi (0-862 kPa) 3/4” 10.3 (8.9) / 8.4 3.3 (2.1) / 82 0-125 psi (0-862 kPa) 1” 8.9 (7.7) / 47.4 3.0 (1.9) / 417 0-125 psi (0-862 kPa) E C B G * At 4' per second (max. recommended residential flow rate). F Dimensions C VALVE SIZE A B 1/2” 3” 3/4” 1” WEIGHT (valve + actuator) E F G 2-WAY 3-WAY 2-9/16” 3-1/8” 1-9/16” 1.15 lbs 1.25 lbs 4-7/8” 2-5/8” 3-1/8” 1-9/16” 1.20 lbs 1.32 lbs 5” 2-5/8” 3-1/8” 1-9/16” 1.55 lbs 1.75 lbs 2-WAY 3-WAY 2-3/8” 3-9/16” 4-9/16” 3” 2-3/8” 3-3/4” 3” 2-3/8” 3-11/16” W A L L H YDRONIC C OMPONENTS & S YSTEMS Taco Inc., 1160 Cranston Street. Cranston, RI 02920 / (401) 942-8000 / Fax (401) 942-2360 Taco (Canada) Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3 / (905) 564-9422 / Fax (905) 564-9436 www.taco-hvac.com 11⁄2" MIN. OPERATOR REMOVAL CLEARANCE ESP Zone Valve™ Wiring Diagrams 2-Way, 3-Way, Normally Open, Normally Closed EFFECTIVE: August 1, 2003 SUPERSEDES: 102-111, dated July 1, 2002 Simplified Internal Schematic: Thermostats Rh/Rc w/y c Transformer Rh/Rc w/y Rh/Rc w/y T T To “T” Terminals on Boiler Control Transformer Relay SUPPLY RETURN SUPPLY RETURN w/y c End Switch w/y c End Switch w/y c End Switch LED End Switch L1 (Hot) L2 24 v Capacitor (Motor) w/y 3-Way Installation: Typical ESP Zone Valve Wiring: Up to 12 Valves per 40va Transformer MIX Actuator’s power connections must be over the supply port to ensure proper flow direction. Taco ESP Zone Valves Wiring a Taco ESP Zone Valve to Replace a Honeywell, Erie or Sparco Valve: MIX Wiring a Taco ESP Zone Valve to Replace a Flair or Taco 3-Wire Valve: Honeywell, Erie and Sparco Wire Leads Flair Thermostat Thermostat See Chart L1 (Hot) L2 Motor See Chart L1 (Hot) L2 4 1 2 Red Motor Wire Color 5 Motor 3 Red Honeywell = Yellow Erie = Black Sparco = Orange/Yellow End Switch End Switch To “T” Terminals To “T” Terminals Taco 570 Series Honeywell and Erie Terminal Block L1 (Hot) L2 TH Motor TH TR Thermostat End Switch Thermostat L1 (Hot) L2 ES 1 Motor 2 ES 3 TR End Switch To “T” Terminals To “T” Terminals Taco ESP Valve Taco ESP Valve c w/y L2 L1 (Hot) c w/y L2 L1 (Hot) End Switch Thermostat Thermostat To “T” Terminals on Boiler Control Transformer Relay End Switch To “T” Terminals on Boiler Control Transformer Relay Wiring a Taco ESP Zone Valve to Replace a White Rodgers Valve: Taco ESP Valve White-Rodgers (1311 or 1321) To “T” Terminals Thermostat 5 6 Motor L2 L1 (Hot) End Switch 6 IT 6 5 3 c w/y End Switch Thermostat 4 DO 4 4 2 5 1 ONCE. DO IT L1 (Hot) L2 To “T” Terminals on Boiler Control Transformer Relay RIGHT.™ TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360. TACO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3. Telephone: 905/564-9422. FAX: 905/564-9436. Visit our web site at: http://www.taco-hvac.com Printed in USA Copyright 2003 TACO, Inc.
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