Hi, when making a low loss header to pipe up a multi zoned central heating system. Does any one know the required distance from the bottom flow connection to the header to the top return connection to the header?
The header is in 54mm copper, with 28mm outlets. Yh I have read that 600/650mm is the minium require distance. Was wondering if any one else could confirm this.
Don't think it matters much. I have seen commercial installations with connections only 200mm apart. The important thing is that the header is the correct diameter. The 'low' refers to low pressure loss which can be acheived by limiting the velocity of the water in the pipe to below 1.5m/s.
Rich
Reading the OP's post again I have spotted my own error. The primary flow and return connections just need to be on the 'outside' of the secondary flow and returns.
Rich
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