Hot header tank

PilotHole

Noticed last night the CH header tanks was hot,

Vented ,kerosene system.

Heating was on full whack.

Is this normal?

John.G

No, sit up long side the header tank and get someone to switch off/on the CH and see if any carry over over water from the vent pipe. If installed properly, from the boiler flow pipe you should have vent, cold feed (not more than 150MM from the vent) and then the pump OR you can have a combined vent and cold feed like mine where a short length of pipe connects the cold water into the vent pipe. You are more prone to these problems if the boiler circ pump is installed in the hot press or worse again, in the attic. (If attic converted to a b/room with a rad or t

Combined Cold Feed & Vent..JPG

wo)

PilotHole

Thanks for the reply,

Pump is very far away in the detached garage (well below the header).

plumber told me I should have a one way valve on the CH fill pipe, which I dont but I will fit one this weekend.

John.G

I wouldn't be too happy with this, what will/may happen then is that you will get a gush of water out the vent which will then subside but you will draw air in via the vent each time which may cause even more harm.

Have you any idea where the cold feed feeds into the system?, is the circ pump on the flow or return from the boiler?

PilotHole

Cold feeds in right above the cylinder in the house, smack bag in the middle of the system .

its a bungalow .

the circ pump on the pipe that at the bottom of the boiler.

John.G

What is sometimes done is the vent carries on up past the cylinder where the hot coil flow is taken, the cold feed then is teed into the cylinder coil return.

If it was OK previously then maybe new circ pump installed recently?.

A few photos maybe.