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Silver box or boxes, close to the pump with wires coming out!

while my van is being serviced I'm in the process of redesigning my standard quotation system to utilise the "energy efficiency best practise whole of house sizing method" to justify proposals made regarding the killowattage of the boiler. Whilst this is easy and quick to do I would like to...

Netaheats can be configured for gravity hot water and pumped central heating. It's not really clear from your description which one you have. You have a pump, do you also have any motorised valves anywhere?

An anticipator is a tiny heater within the room thermostat that is supposed to make the operation of the stat a lot more accurate. Dunno anything more about them than that, loads of others here know more than me.' If you actually look at the boiler where you make the roomstat connection you...

Oops, missed the RF bit! doesn't matter though, the receiver although plugged into the mains is still just a voltage free relay. The clock should be bypassed via the continuous run switch and the whole lot should be controlled by the CM67 - which is a very good box BTW. Completely...

Thanks Cozzmic, I phoned Baxi and they said exactly the same thing. And there was me who was gonna just take it out! :oops:

Halsteads phone number is 01926 834844

On a sealed system boiler there is only one way water can be entering the system and causing the pressure to rise, even if the boiler is off. That has to be the filling loop. Why not disconnect it and see if that makes any difference?

Your installer is talking absolute nonsense. The CM67 is a programmable room thermostat that does not have an anticipator. If it did, it would require a 230V mains supply, which it doesn't. What thermostat has he wired up to it then?

Check the filling loop taps are not slightly open. Disconnect the filling loop if possible. As it's doing it when the system isn't running it is unlikely to be your expansion vessel and most likely to be the aforementioned filling loop.

Bit before my time I'm afraid. Anyway, it's leaking. I've checked the install docs at partsarena which says "IT MUST BE FITTED", but doesn't say what it does. Clueless as usual. Any hints or tips gratefully received. Cheers

Do you have very poor mains water pressure/flow rate?

Did you check that the header tank had emptied when you drained the system?

Personally if I had your problem of leakage, the SC was in the cellar and you couldn't get the external SC fixed I would go for it. The very worst that's going to happen is that you are going to get temporarily, very very wet. Just have all the tools and fittings you could possible need to...

Actually that bloke seemed OK to me - he obviously didn't want to be put in that situation and actually offered to repay the bill - first time I've seen that. He also had the sense to leave the terrible company he was unlucky enough to be working for.

It's very unlikely that you need to re-pressurise the system via the filling loop - if there wasn't enough pressure it just wouldn't start at all. Your system is overheating and tripping the thermal cutout. You really need to get an engineer in to work out why.

Is it just me or has this programme become even more of a joke than it used to be? Is it supposed to be a serious bit of investigative journalism or just light entertainment? in my opinion it falls short of either. I have never seen a less convincing 70 year old Welshman, and I am...

previous reply was better than mine!

The hot water system is not connected to your motorised valve in any way, so forcing mains cold up the hot supply will not make any difference. Why not just change the valve?

:D :D :D