The ZA024Q4A1 from Taco is a Replacement Power Head for Taco Zone Sentry Zone Valves, Normally Closed. It provides on-off control in both open and closed hot or chilled water hydronic systems.

The state of-the-art features of Actuator Head make the control truly universal and will prove to be both reliable and efficient. It is loaded with innovative technology and boasts a new Prostar Capacitor and a reliable high-torque, high-efficiency miniature motor. The quick Snap-in connects on the back of the valve ensuring a simple, secure and fast wiring hook-up. A green LED light shows full functionality of the valve

Features:

• Taco ZA024Q4A1 Zone Sentry;
• Replacement Actuator Head;
• Normally Closed Position;
• Uses up to 93% less energy than other commonly installed zone valves;
• Multi function LED assists with troubleshooting;
• The actuator mounts on the valve in either direction;
• Replaces Taco EN024Q4A2 and AN024Q4A2 Actuator Heads;

Technical Specifications:

• Maximum Operating Pressure: 300 psi;
• Maximum Shutoff Pressure: 125 psi;
• Fluid Temperature Range: 20 to 240F, at 135F ambient;
• Service: Closed systems;
• Optional open system configuration;
• Up to 50% Glycol;
• Ball Rotation Speed: Full Open to Full Close (90 turn), 5 seconds (after charge time);
• Full Close to Full Open (90 turn), 5 seconds (after charge time);
• Seat Leakage: Drop-Tight Close-Off;
• Electrical Rating: 24 VAC, 60 HZ, 0.48 Amps;
• Do not exceed number of valves per transformer rating;
• Example: Do not use more than 12 zone valves per 40VA transformer;
• Power Consumption, Charging: 11.4 Watts, 0.48 Amps;
• Power Consumption, Power On: 1.44 Watts, 0.06 Amps;
• Heat Anticipator Setting: 0.5 Amps;
• End Switch Rating: 1 Amp at 24 VAC;

Warranty:

• 1 year manufacturer's warranty from the date of purchase