Key Features

• Weight: 27 kg
• Dimensions: 700(H) x 440(W) x 270(D) mm
• Heating output: 0.5–15 kW
• Max. flow temperature of primary circuit: 90°C
• Max. flow temperature of heating circuit: 70°C
• Max. domestic hot water temperature: 60°C
• Electrical power supply: 230V

What's Included

• Optional pre-fitted heat metre

Worcester Bosch Flow 8500 60 Indirect Heat Interface Unit Overview

The Worcester Bosch Flow 8500 60 indirect heat interface unit offers a domestic hot water flow rate of up to 21 l/min, 15 kW of central heating output, and comes with the option of a pre-fitted heat metre. This unit is designed to be suitable for multiple situation setups, such as in apartment blocks.

What Is a Heat Interface Unit?

A heat interface unit is similar to a standard boiler's appearance and commonly used in commercial buildings and apartment blocks. These units act as a middle machine between the central boiler and the hot water outlets in individual apartments, such in for the radiators, showers, taps, etc. Their function removes the need to install individual boilers in every dwelling, making them a cost-effective and energy-efficiency solution.

The Benefits of Using a Heat Interface Unit

Aside from being cost-effective, there are many other benefits of using a heat interface unit, such as typically being smaller than a traditional gas boiler. Also, the lack of a flue also means that heat interface units are more compact, and you can hide them easier in a standard cabinet.

These units contain fewer mechanical parts (such as gas valves, diverter valves and gas valves), meaning there are fewer electronic parts to replace/maintain. This design typically means that fewer faults arise, making them a reliable heat supply without fewer chances of breakdowns.