Adding a Radiator to Your Aga Hot Water Circuit

Many people find that an Aga, Rayburn, or Heat Storage kitchen can generate lots of hot water.

The water in the hot water cylinder often boils, so the water coming out of the taps is very hot. When this happens, you may need to find a way to “lose” heat from the hot water circuit, and the most effective way to do this is to install the coolant to act as a “heat sink.”

The following information tells you how to install the coolant in the Aja hot water circuit.

The key is to increase the water flow through the system whenever possible.

The hot water circuits in Agas are driven by gravity. In other words, they only rely on the natural convection to circulate hot water, without the need for a pump. For this reason, it is important to increase the water flow in and out of the coolant. This is done by designing the system and choosing the appropriate coolant design.

There are many different ways that you can increase the flow of water around a circle.

1. Increase the vertical length of the flow tube from the aja to the coolant

Your radiator must be connected from a hinge located as close to the AGA as possible. This increases the “heat up” effect, which results in a stronger flow of water to the coolant.

2. Reducing the horizontal distance that water needs to travel

The radiator will be ideally located directly on Aga, so choose a location as close to it as possible.

3. Reducing the number of restrictions imposed on water flow.

Reducing the number of angled joints between the flow and the return will help the water flow. If you need to rotate the tube, choose the tubes that are bent with the pipes bent instead of the corner joints so that the “corners” are not angled.

4. Maximize the size of the hole in the tubes and valves.

Always use the maximum diameter or the “inner diameter” of the tube to and from the radiator. The hot water circuit is usually fed to the hot water tank and returned to Aga using a 28 mm tube, and when possible try continuing on the 28 mm tube.