“My hot water heater was not heating the water. The tank depends on transfer of heat from a coil of pipe with hot water running through it to water in the tank. I found that the Taco zone valve was not opening, even though there was 24 volts of ac power between terminal 1 and terminal 2 of the valve actuator. Replacement involves simply removing the three wires connected to the defective actuator device, waiting for it to cool and retract its plunger, and then rotating it slightly until it releases. The new actuator is then dropped onto the valve and rotated slightly until it locks. Lastly, hook up the wires the same way they were connected to the defective actuator, being careful not to short them together. FOLLOW DIRECTIONS CAREFULLY, or you may damage the replacement actuator.”
“Our original unit went bad after moving in, and was expensive at the local hardware store! Not a good combination during the cold New England winter, but this arrived by the following morning and was easy to install and worked without any issues!”
