Water Supply

For my house I have went for an indirect cold water supply system as it can reserve the supply of water if mains fail. There is constant pressure on all taps, except the kitchen tap and there is also an overflow fitting fitted to storage tank to prevent water damage due to overflow. 

The indirect cold water supply system directs the mains water coming into the house in two directions, one up to a storage tank or the cistern in the attic and the other to the kitchen tap. It is fed off to individual appliances from the cistern. The only outlet coming directly from the mains is the kitchen tap. This tap is the source of clean drinking water for the household. The tap is also the only high-pressure outlet in the system. 

I have chosen the indirect hot water supply because it reduces stress on boiler due to regulated temperatures. There is no build up of limescale as the same water is being reused and radiators can be connected to the system.

The indirect system is much more commonly used. Water is fed into the hot water cylinder from the cold water storage tank. This water does not feed into the boiler. A separate storage tank in the attic provides the boiler with water. A coiled pipe is placed in the cylinder. The hot water from the boiler feeds through this coil and heats the water in the cylinder. This system heats the water in the cylinder more evenly and economically, because, unlike the direct system, the water in the cylinder is not constantly being replenished.