Product Brochure

Hydronic Accessories

Heat Motor Zone Valves

Effective Date: 06/18/13

Printed in USA

©Taco Catalog # : 100-3

Supersedes: 05/03/12

Engineered for reliability, Taco Heat Motor Zone Valves provide a time proven method for

system zoning and control. The exclusive heat motor design operates silently, while the

twist off head allows for serviceability without disturbing system connections. Available

in a variety of sizes and styles to meet the broad demands of today’s systems.

PAGE 1
Hydronic Accessories Heat Motor Zone Valves Engineered for reliability, Taco Heat Motor Zone Valves provide a time proven method for system zoning and control. The exclusive heat motor design operates silently, while the twist off head allows for serviceability without disturbing system connections. Available in a variety of sizes and styles to meet the broad demands of today’s systems.
PAGE 2
Heat Motor Zone Valves Application Taco Heat Motor Zone Valves provide a convenient way to create individual zones or equipment isolation in a hydronic heating system. Utilizing one pump along with multiple zone valves, flow can be started, stopped, or diverted through the system to provide individual room or area comfort control and energy savings. Taco offers many versions and sizes of the Heat Motor Zone Valve to meet all your zone valve needs. Features • Proven Performance – Millions in Use.
PAGE 3
Heat Motor Zone Valves the boiler control (T T) and separate system transformer. The relay in the boiler (or zone control box) starts the circulator. The piston continues to move down until the valve is fully open. Zone Valve Operation and Wiring There have always been questions surrounding how the 3-wire terminal block design of the Taco Heat Motor Zone Valve works. The explanation below and associated diagrams explain step-by-step the operation of the zone valve.
PAGE 4
Submittal Data # 100-3.