Red Seal Plumbing Practice Exam

A four wire zone valve is wired to:

1. Breaker, switch, light

2. Thermostat, transformer, end switches

3. Computer, sensor, display

4. Battery, solar panel, inverter

The correct answer is: Thermostat, transformer, end switches

A four wire zone valve is wired to a thermostat, transformer, and end switches because those components are all necessary for the zone valve to function properly. A breaker, switch, and light, as described in option A, would not be able to properly control the zone valve. Option C's components of a computer, sensor, and display would not be appropriate for wiring a zone valve. Similarly, option D's components of a battery, solar panel, and inverter would not be suitable for wiring a zone valve.