I have a bog standard indirect gravity and pump fed system with no 3 port or motorised valve i:e c.h has priority.
I'm constantly getting air locks which stop the water in the cylinder from heating. so no domestic hot water.
I've taken air locks out of the nearest and furthest rad pipes (8mm) and from the boiler return to the cylinder. I've also vented the rad in the same room as the cylinder about once a month and let about a pint of water in but theres no sign of a leak at the rad or under the floor but they keep coming back.
The feed gets red hot in seconds and the return is less than tepid but when i crack the nut on the T i get water not air its doing my head in im sick of draining and refilling it.
Any ideas greatly appreciated
I'm constantly getting air locks which stop the water in the cylinder from heating. so no domestic hot water.
I've taken air locks out of the nearest and furthest rad pipes (8mm) and from the boiler return to the cylinder. I've also vented the rad in the same room as the cylinder about once a month and let about a pint of water in but theres no sign of a leak at the rad or under the floor but they keep coming back.
The feed gets red hot in seconds and the return is less than tepid but when i crack the nut on the T i get water not air its doing my head in im sick of draining and refilling it.
Any ideas greatly appreciated