Post
by peter the plumber »
Sat Dec 08, 2007 11:49 am
A one pipe heating system, means there is only one pipe.
Most have 2 pipes, one for feeding the radiators the other for used water.
On a 1 pipe system, the heated water go thru the first radiator and then back into the same pipe, by the time the water reaches the last radiator in you home, the water is not very warm and the last radiator does heat up every well.
The affect of this is simple, you boiler could be running at full power but after the water has gone thru 5-6 radiators it would have cool down and the last ones to get the water would be slow heating up or stay cold.
On a 2-pipe system, you have 1 pipe feeding the radiators with hot water, and a second pipe taking the use water back to the boiler for reheating that is better.