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Hi, I have a new Grant Combi heating system in my bungalow. The 28mm flow and return pipework enter the loft region and splits into two 22mm heating circuits one for each half of the bungalow. The 22mm pipework is insulated and sits directionly onto the joists and where a radiator is needed I...

OK thanks, that was the answer that I was hoping for. Regards FarmerJo

Hi, I have just had an oil heating system fitted which is a 36KW Grant Vortex Blue Combi with built in 25L expansion tank. I am trying to work out if I need an additional expansion tank (I have an additional 25L BOSS vessel that I could use if necessary). I have quite a large bungalow and have...

Have sorted out the door and dead legs and now all is well. I was planning on putting a pressure gauge off of the incoming water supply, there would be a length of 15mm pipe to it about 100-200mm long. Would this be considered a dead leg? Regards FarmerJo

Hi, I get the reason now why the dead legs are causing the boiler to start when the cold is switched on and off. Any ideas about the front panel not fitting properly? Regards FarmerJohn

Hi, Many thanks for the replies. Just read about Dead legs and it was the first I had heard of them. There are indeed a number of pipes that have no flow as they were put there for future use and are currently capped off. There are at least a 3m length in both the hot and cold pipes and both...

Hi, I have recently had a Grant Vortex Blue 36KW boiler internal fitted and it seems to work OK but I have noticed that when the cold water is switched on, say in the bathroom, the boiler starts up like it is heating up the internal hot water store. It doesn't do it every time, but after it has...

Hi, Have just moved into a new house and have a Burley G4220 flueless gas heater in the main living room area. Recently purchased a new bottle of propane gas which was connected alonside an existing bottle which was about one quarter full. The pilot light operates as expected after a number of...

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Presumably the wax capsule is located in the housing that I removed by undoing the two small allen grub screws. How is the wax capsule removed from the housing? On the end of the housing there is a hexagonal feature that looks like a nut but is almost too thin to get a spanner on it. I...

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Don't reply unless you have something useful to say! And I will create as many new postings as I think is necessary.

Hi, I have taken the wax module part off of the diverter valve and it appears to be faulty. Although the central pin does operate it is weak and leaks what appears to be wax. Can this component still be obtained without having to replace the entire valve assembly? If so where? Regards...

How can I test the diverter? Is it possible that the diverter is stuck in the how water position but allowing some radiator flow? Is the diverter the valve with two yellow wires going to it in behind the control panel?

Hi, Although the hot water works fine I have a strange problem with the CH which has gradually got worse. I have tried several attempts at fixing this problem and yesterday even replaced the pump which has not corrected the problem. I realised after some thought about the matter that...

What is the thing to the right of the low water pressure valve that has got two yellow wires going to it?

Thanks. The thing with the orange wires behind the control panel is what I thought was a solenoid that operated the diverter position. So this is the low water pressure switch. Apart from the delay described previously my real problem is that having replaced the pump I am still having...

Whereabouts is the max module? Whereabouts is the diverter?

Hi, I have recently had some problems with this combi and have changed the CH pump. It operates fine and I can hear the water going through. The system was completely emptied and refilled. I have noticed that whenever it has been emtied it takes ages beore the hot water starts to circulate...

I have ordered a replacement pump, Myson CP63, and will add some of the gung remover that you suggested. I will post when the pump head has been changed and let you know if my problem has been sorted. Many thanks for all your help. Regards FarmerJohn