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Agree

What courses could a plumber do that wanted to go in to system design of plumbing and heating systems?

Does plastic hep20 pipe freeze ok with an electric pipe freezer? Have only used it on copper before.

In essence then by opening the tprv water is only getting drained from the cylinder to this point

Thanks. Once isolated and running the lowest hot tap. It should stop pretty soonish?

Thanks so there suggesting turn boiler off/immersion and run hot tap till water cools?

I've found the instructions, how long should you leave the immersion/boiler off before draining?

Thanks it's one of these.

Got a pressure relief dripping on an internal bubble hot water cylinder. To recharge the bubble it's close the cold fill to cylinder. Open a hot tap and run till it stops and open pressure relief and refill?

It's switched to on, on the fuse spur. There is power to the fuse spur. But no power coming out of it

Picture

These two immersions have no power going to them, I was going to look at changing the fuse first then the possibly the stat I no it's not a great set up but it's a temporary measure until the house gets converted to a combi boiler.

Have a couple of rusty rads to swap on a system. Like for like same side. Would you swap the valves and drain down. Or leave the valves so don't have to drain down?

It looks like quiet a big room. Main living room.

And then see what output the column radiators are giving

Thanks yes id have to measure the room and work out the heat loss

Fitting something like this

I'll have to work out the rooms heat loss. But is it likely 2 tower column radiators would heat this room. If swapped out the normal radiators

Which part do you adjust sorry?

This is the set up.