Strange (to me) pipe sizes

inlets to the

What is the country of origin?

AWEM

From the headers he seems to be in France - so that may be the problem of the sizes!

Cash

What you need is to use the same size or larger pipes. The manufacturer would not have chosen those sizes if smaller ones would do the job.

As you appear to be posting from France, I suggest trying a French pluimbers' merchant. The sizes do not seem to match British pipe sizes. Standard copper sizes are 28mm, 35mm and 42mm. Plastic 3/4" pipe would be

Should also be available at the plumbers' merchant.

Colin Bignell

All the sizes sound like normal pipe sizes found right across Europe. Only thing is the outside diameter of the wall of the pipe may vary slightly, but are all the same in actuallity.

By TRAPs on the inlets, I think this has been mis-read. I think you are reading TAPs so that the pump can be isolated for maintenance or repair. Maybe a visit to SpecSavers is in order. :-)

..

Pump is from china, i am in France, but will source all the fittings in England as my French isn't quite up to scratch, and getting anything in France is a nightmare, i would end up driving many many miles tracking bits and pieces down! I have measured the internal diameter of the large pipe and it appears to be 35mm ID, the smaller copper pipes are about 23mm ID, so are these 35mm and 22mm pipes? Id like to be able to use compression fittings on the back of the heat pump rather than solder. I imagine i will have to solvent weld the plastic pipes?

Cheers

Steve