F
FatBob
Hi
Can someone help please.
I get a massive bang when a two port valve closes.
I have secured the pipes.
It is an S plan and I believe it is the valve that goes to the hot water cylinder. If I turn the Thermostat up on the cylinder and get hot water from the boiler to flow and then turn the stat down I then get the bang at the valve. I tried turning the pump speed down from 3 to 2 with no affect. I contacted honeywell and they said it was differential pressure. I then started looking at the Auto Bypass valve. This looks as if it has been installed correctly between the flow and return set between .2 and .3 mb. The valves have been installed under the floor boards in an inaccessible place. The system has a close vented cylinder in the garage but has an open vented cylinder up stairs. A two port valve goes to the cyclinder in the garage then the 2 ports valves for the ho****er are upstairs and one for the heating.
I found on the internet someone said take the short spring out of the zone valve so it is slower at closing. On this web site someone has suggested that I use a Myson 2 port valve which is not so prone to hammer. The other option is to use a water hammer arrestor. I have had this problem since moving into the property. Is there anything that I can do with the Auto Bypass valve. Thanks for any help. FatBob
Can someone help please.
I get a massive bang when a two port valve closes.
I have secured the pipes.
It is an S plan and I believe it is the valve that goes to the hot water cylinder. If I turn the Thermostat up on the cylinder and get hot water from the boiler to flow and then turn the stat down I then get the bang at the valve. I tried turning the pump speed down from 3 to 2 with no affect. I contacted honeywell and they said it was differential pressure. I then started looking at the Auto Bypass valve. This looks as if it has been installed correctly between the flow and return set between .2 and .3 mb. The valves have been installed under the floor boards in an inaccessible place. The system has a close vented cylinder in the garage but has an open vented cylinder up stairs. A two port valve goes to the cyclinder in the garage then the 2 ports valves for the ho****er are upstairs and one for the heating.
I found on the internet someone said take the short spring out of the zone valve so it is slower at closing. On this web site someone has suggested that I use a Myson 2 port valve which is not so prone to hammer. The other option is to use a water hammer arrestor. I have had this problem since moving into the property. Is there anything that I can do with the Auto Bypass valve. Thanks for any help. FatBob
