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Yes one is the condensate drain from the boiler which should go to a waste pipe, gulley or soakaway. The prv should go outside and ideally terminate to a gulley or at low level with a guard but 99 times out of 100 is just turned back to the wall wich is acceptable. Also, is it normal then for...

15/60 will be fine, good luck getting the old one off though :D Looks like it may need the blow lamp :twisted:

Why not just get a DT10RF or DT20RF simply plug into the boiler and you also have the benefit of the timer for your hot water pre heat

I'm assuming an RD532 is a 30CDi combi, is that right? There should always be 240V between Brown and purple at the fan if not then PCB or wiring harness are goosed. Have you checked continuity of harness to fan? Did you insert code plug into new PCB?

May have been bad for the baffles due to overheating.

You could but you will most probably need YP21's to do it, as you wont be able to get your bends tight enough.

When i did my Oftec with WB the instructor set the combustion by sight on three boilers then checked all three with a FGA all of them were spot on. So it would seem it can be done if you know what your doing.

A mate of mine fits Warmflow boilers and I remember him telling me that he had a customer who had been running the boiler dry and then went and repressureised the system splitting the HE. He managed to get his customer a new boiler under warranty through the Warmflow rep. Worth a try. I...

It doesn't switch off the hot water, it switches off the hot water pre heat. The hot water pre heat will fire once every 20 mins keeping the water in the heat exchanger hot and ready to respond to a hot water demand. The idea of the timer is so you can switch it off when your out at work or...

Oooops :oops:

But if the last call was HW then the valve will stay in HW regardless of the grey wire. So the grey wire does not hold the valve in the last position of whatever last called for heat. It will hold the valve in CH if CH was last to call for heat.

And yeh still got it wrong c*cksucker :roll:

Close but no cigar :wink:

No, it doesn't but it also has sod all to do with what was last called for does it? :roll:

That would be all power removed then :roll: With the exception of hot water off from the clock of course :oops:

You must be on much better terms than me then, £1.55 p/m for 15mm yorkshire copper I'm on.

A three port valve will always default to HW position. However if the hot water is satisfied it will go to heating position.