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Thank you. We will try this and if it doesnt work get a plumber in to check it out. Thanks everyone for your help. :)

No idea! After installing the shower and when the Hot cyl tank refilled with cold water it was coming out of the overflow, and the water was warm, so fitted the NRV as suggested on this forum somewhere. Susan

Thanks Steve will give some of your suggestions a try. Think we had it working ok before fitting NRVs but it was back filling the cold tank. The problems have occured after fitting the valves. Regards Susan

Hiya Sound like we need a negative head pump. To fit the conversion kits will cost over £200 (need 2) :shock: Is it possible to locate the pump in the loft instead, would this work? or would it be cheeper to buy a new pump :cry: Regards Susan

Hiya How Do I change it to negative head? Can I purchase a RCM (whats this stand for please) Negative head conversion kit (as suggested on page 2 fig 3 salamander instruction booklet) if so where from. Relaying info from partner he speaks I type p.s. he is getting P**** off with this shower...

Hi Picasso Thanks for helping. The pipework is like so: cold down from loft to pump back up and over and down to shower. Hot from tank to pump up into loft and over and down to shower. NRV are in loft pipework not on supply pipes. How is the backfeed stopped without NRVs? (getting...

Hi Picasso not really sure what you are asking, there is at least a minimum of 2 metres from pump to cold tank. Airing cupboard on landing opposite bathroom, hot cylinder sits about eye level in cupboard, pump at side. The pump is a salamanda RSP45 dual shower Positive head. We had...

Yes they do.

My partner has installed a new Thermostatic shower for my daughter. Gravity fed system with boiler new twin impellor salamanda shower pump at side of tank. Sussex flange etc all following instructions. Cold water in header tank in loft. The shower works fine Once Only and after it is...