Christopher buzzard
Gas Engineer
- Messages
- 190
hey,
Set up - 3 storey house. Boiler in cellar, sealed system. Ground floor 2 pipe system, the rest of the house is 1 pipe. 2 radiators and 2 towel rails are no longer heating up. Approx 16 radiators in total.
So after fitting a new boiler, running system with cleaner in for a day. Hot flush. Cold flush. Left at night with all radiators heating. Got a call 2day to say 4 radiators aren't heating up. So balanced system on lock shields, still nothing. Even turning off all radiators, leaving the 4 on did nothing. It's just seems to be circulating on the 1 pipe system not entering the radiators back to the boiler. Pulled some water of the radiators, which after a time produced hot water. Both valves on the radiators are very old. But isolating the rad and opening both valves produced water. All be it very black. So the valves are allowing water to flow. I've decided to go back on Monday to powerflush the system. So my question is how can I do this. Powerflushed 2 pipe systems many times but not 1 pipe. How do I stop it circulating around the pipework and into the radiators.
Thanks for your time.
Set up - 3 storey house. Boiler in cellar, sealed system. Ground floor 2 pipe system, the rest of the house is 1 pipe. 2 radiators and 2 towel rails are no longer heating up. Approx 16 radiators in total.
So after fitting a new boiler, running system with cleaner in for a day. Hot flush. Cold flush. Left at night with all radiators heating. Got a call 2day to say 4 radiators aren't heating up. So balanced system on lock shields, still nothing. Even turning off all radiators, leaving the 4 on did nothing. It's just seems to be circulating on the 1 pipe system not entering the radiators back to the boiler. Pulled some water of the radiators, which after a time produced hot water. Both valves on the radiators are very old. But isolating the rad and opening both valves produced water. All be it very black. So the valves are allowing water to flow. I've decided to go back on Monday to powerflush the system. So my question is how can I do this. Powerflushed 2 pipe systems many times but not 1 pipe. How do I stop it circulating around the pipework and into the radiators.
Thanks for your time.