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Well they don't treat the water - the only way really is a polyphosphate or ion exchange setup. Both have advantages and disadvantages. Both need topping up periodically.

What? You fill it with a bucket?

Yes, but not all of them can be unscrewed.

You cold try giving it a squirt of WD40... I have come across these where the O-ring has come adrift and got stuck in the mechanism.

You really aught to know the answer to this whether or not you install or are a service engineer. In fact, as a service engineer you should be more aware in order to pick up on faulty installations.

[/url] Now you're speaking in riddles... If there is a flue safety issue, surely they would have told you?

I actually have the same problem at home. Although the bog has an internal overflow. But as the whole lot is being ripped out soon; I can not be fagged to find out until the work starts.

There are far worse out there - just make sure the system is thoroughly flushed and that the installer in accredited. Depending on how many of their boilers he fits the cheaper the 5 year optional warranty is.

There is only so much that you can do to mitigate stupidity. If you install a boiler that squirts acidic water over a customer's car then you can hardly blame the manufacturer :lol: Agree the slug of hot water might catch you unaware, but then TMV regs should deal with that - you can get the...

To reply to Simon... The drain free system is still supported for existing customers. It's only real flaw was the ability of the pump and tube to handle the Aluminium wash-off from the HE; as it tended to get clogged easily. It might well be appearing soon with another firm in the future.

Have they done summut daft with the overflow pipe?

Who vacuums the combustion chamber? And why do it every 6 months? Boilers need to be serviced every year. Your fault could well be related to the lack of servicing. There could be other issues that an amateur's random hoovering will not pick up that would have been in a service. Whilst...

When was it last serviced - Properly? Installation fees will vary greatly and has been covered here thousands of times. Fitting a supplied only boiler will mean the installer will guarantee it won't fall off the wall and nothing more. Personally when someone asks me to "fit only" on...

The boiler PCB is protected from external faults by its own fuse.

You do if you want to solder.

Parts are available through Plumbase or direct via a courier. Local installers who develop a relationship might well stock most of the parts - seeing as there isn't that many it does take up space like most other brands. The Atag Combis are pretty impressive on paper - i have only fitted...

You can as long as there is another source of water coming from above to wash the condensate away.

Apart from the fact that A) They're Ravenheat B) You will need a light commercial gas supply to drive them. Not so simple.

Can the skirting be lifted, caps soldered onto the pipe and then the skirting replaced? Depends how much pipe you want visible.

It is made out of sh1te plastic and yes it will do more than harm than good if it splits in the loft. IF you're not going to use anything else then make sure your system is deigned properly. Correctly installed and flushed - there should be no need for these devices anyway.