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Hi, I have a honeywell ST1000 programmer. Does anyone know if it can be set or wired in such a way to operate a gravity water/ pumped CH system please. (primatic) Many thanks

thanks for info..think i will wait for tank to fail first!

Having recently made a number of improvements to my CH system I am now considering converting it to a fully pumped system with a motorised valve. It is presenty pumped CH, gravity water feed with primatic cylinder. Consequently there are 4 pipes in addition to gas going from the boiler...

I have had plastic plumbing installed in the bathroom for over 15 years and it has never leaked, (although I use copper on any home projects!). Plastic seems handy in difficult to get at locations.

I have a primatic system consisting of a potterton myson boiler, pumped ch and gravity hot water. I had to add a radiator and replaced a faulty pump and sticking anti gravity valve. I also flushed the sysytem. All radiators now get very hot within 20 mins. However, the water heating which...

thanks Namsag...I took a chance and hit it hard with a hammer. Guess what...its fixed!!! Where do I send the cheque? :) thanks to everyone...it pointed me in the right direction

4 in total

thanks for your suggestions..they all make sense to me. Would the anti gravity valve be the small cylinder in the pipe just after the pump and about 2" long? Also does anyone know why it is covered in green and white 'fur' on its outside? Are these items generally standard fittings and easily...

I would be grateful for any advice on a CH problem which appears to be getting worse. First things first..system is Potterton Kingfisher 2, RS 60 boiler, gravity water fed , pumped CH. Primatic cylinder. Radiators: 3 largeish, 4 small, grundfoss 3 speed pump. The radiators no longer seem...