When water heaters are installed in parallel, what device is installed to ensure equal water flow through the heaters?

When water heaters are installed in parallel, what device is installed to ensure equal water flow through the heaters?

• A. Mixing valves are installed to ensure equal water flow through the heaters.
• B. Pressure relief valve is installed on each heater.
• C. Thermostats regulate flow to each unit.
• D. Check valves isolate each heater.

Answer: (A)