Why does a boiler have a low loss header?

This is usually dictated by various control valves. Where there are multiple boilers in one system, a low loss header can regulate their flow rates, making the whole system more economical. This could result in a higher-performing, more efficient boiler with a consistent water temperature that can reach your radiators.

When do you need a low loss boiler?

You would likely need a low loss header if you have a very large home or business premises and you’re using a low water content boiler. Your low loss header will need to be sized correctly depending on the flow rate of water around the building. A low loss header is also a good device for removing debris and sludge from your heating system.

What should the size of a low loss header be?

The size of the low loss header relates to the output of the boiler and the system load, design and chosen temperature differential. The header should be sized so that the pressure loss at full flow is small. All secondary circuit flows and the flow from the boilers should normally be at the top, or one end of the header.

Why are there two pumps in a low loss header?

If the pump is too big, it might be pushing hot water around the radiators too quickly, therefore wasting energy. Two pumps will be required in effect, one from the boiler to the low loss header and one from the low loss header to the heating system.

What does a low loss boiler header do?

When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system.

You would likely need a low loss header if you have a very large home or business premises and you’re using a low water content boiler. Your low loss header will need to be sized correctly depending on the flow rate of water around the building. A low loss header is also a good device for removing debris and sludge from your heating system.

The size of the low loss header relates to the output of the boiler and the system load, design and chosen temperature differential. The header should be sized so that the pressure loss at full flow is small. All secondary circuit flows and the flow from the boilers should normally be at the top, or one end of the header.

Where is the temperature sensor located in the low loss header?

The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header mustbe used in multiple Vitodens 200 installations (maximum of 4 boilers).