Where is the feed and expansion tank located?

In most households, the feed and expansion cistern will be located near or next to the cold water storage cistern. On older installations, it may be suspended directly above the cold water storage cistern via a base or joists. In some cases, the overflow and/or the vent pipe may simply discharge into the cold water storage cistern below.

How big should the cold feed and vent be?

I have always been used to installing central heating systems with the typical H section with cold feed and vent no more than 150mm apart.

Which is the correct position for cold feed and vent?

If easy to do, replace f&e pipes and stick them in the right place. 450 mm water column is 0.045 bar, not half a bar. In general, the higher the better, this is to minimise air being sucked in and water being sprayed into the tank.

Why is the expansion pipe bigger than the cold feed pipe?

The first reason why the expansion pipe is at 22mm is because, it is more likely not to block up if the rest of the central heating is at 22mm circuit. The second reason that the 22mm pipe is bigger than the cold feed 15mm pipe is because, the flow is not as restricted and easier to let the water expanding to find the expansion vent pipe.

How to control overflow of cold water tank?

Here is some brief information on how you can control the overflow of cold and hot water tanks. If you find water pouring or dripping from a pipe pointing out of the building or from eaves of roof, then a cold water tank is overflowing.

How to calculate maximum flow rate in FRP water tank?

The authors carried out the experiment on FRP water tank with overflow pipe of the inside diameters 50 mm and 100 mm. In this paper, the experiment result on the maximum flow rate, the water level change situation in a water tank, and the method of sizing an overflow pipe are presented. 2. Experiment Overview 2.1. Experiment equipment

How are maximum flow rates and sizing method of overflow?

(maximum capacity of the water supply pump), and the flow was regulated by installed inverter control of the pump and manual control the ball valves in water supply bypass pipe. As experiment procedure before experiment of each pattern, first, water is supplied more than overflow respect in the experiment water tank.

Can a feedtank be maintained at a high temperature?

As previously mentioned, there are significant advantages to maintaining the feedtank contents at a high temperature. One of the most convenient ways of achieving this higher temperature is by injecting steam into the feedtank. The feedtank must be vented to prevent any build-up of pressure.