In an S plan heating system, what is required for each separate zone?

In an S plan heating system, what is required for each separate zone?

• A. Each zone must have its own valve and thermostat
• B. Each zone must have its own pump
• C. Each zone must have a single shared valve
• D. Zones require no thermostat

Answer: (A)

Independent zone control requires two components for each zone: a valve to control the flow to that zone and a thermostat to sense its temperature and call for heat when needed. In an S-plan system, the thermostat for a zone signals its motorized valve to open, which then allows the boiler to heat that zone. This setup lets each zone operate and be heated separately, providing targeted comfort and efficiency. A separate pump for every zone isn’t required, and a single shared valve wouldn’t allow true zoning. Zones do need a thermostat to regulate when heat is provided.

Independent zone control requires two components for each zone: a valve to control the flow to that zone and a thermostat to sense its temperature and call for heat when needed. In an S-plan system, the thermostat for a zone signals its motorized valve to open, which then allows the boiler to heat that zone. This setup lets each zone operate and be heated separately, providing targeted comfort and efficiency. A separate pump for every zone isn’t required, and a single shared valve wouldn’t allow true zoning. Zones do need a thermostat to regulate when heat is provided.