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More information what boiler Grant make many different options. What water is cloudy? Condensate?

If there is no thermostat it ain't going to work! First thing if you have a multimeter and are competent to work with mains voltage check there actually is a live feed. Probably needs replacing don't fit another Salus! We use EPH CP4 rf stats very reliable but lots of others out there.

I go to trouble to enquire get you the information now you try to save coppers by using eBay! As I said previously we'd just change part. I'm out of here.

Part number 3007029 description Riello Stem O ring. Just pretend your trade and open account they almost certainly won't check.

Sentinel X400

Why not just ring them up then? They will talk to you! Order today get it tomorrow.

Teeing into lead service was easy enough make a hole use bent pin to create socket. Clean everything clamp plumbers black to stop solder running too far. Tallow for flux stick of grade D wipe joint. Wiping joints still been done when I started this god forsaken job!

Heating world of spares look on there Web site Correct 0 ring you need 60p

HVO (hydotreated vegetable oil) bio fuel has been available for some time. Most new oil boilers for the last 5 years come hvo ready. Running boilers on hvo is claimed to make them up to 80% cleaner. Running on a mixture with standard kero also reduces emissions. Answer to your 0 ring...

Well the pump is on return but as above why? Grant provides a clip to locate fire valve sensor on front of boiler above burner. There is even a pre drilled hole !

Unless the Irish version of the boiler house model is radically different from UK version the right connection view from front is flow. Also all the Grant's we have installed (well into 4 figures)we always fix pump on flow.

Whoever did that hadn't a clue Not enough lap you don't use silicone as a bodge to seal lead. Fixing back with odd screw different at least try copper nails. Horrible finish to bottom edge (I won't say dressed) looks like it's designed to channel water in!

Just hit the joint that won't undo with hammer several times. You will hear a change of noise as it comes loose. Often then hand tight .

Prestex went over to 1/2 in BSP must be 30 or more years ago. Still find the odd fine threaded one on old pedlar Belmont & terrier rad valves.

We got to call them the boomerang stat Always changing them for failed receivers. Bloody awful things.

Looks like a flamco flexvent so yes it's a aav Close red cap when boiler vented. They are a pain in ass renown for leaking with slightest bit of crap in system. Out of interest that type is not fitted on Grant UK boilers! In fact I'm one of several installer's that pushed Grant to fit manual...

I'd be treating myself to a new pump they really don't like that sort of crap. Also decent filter on tank outlet would help.

EPH CP4 We have installed well into 3 figures zero problems. 5 year unconditional warranty (drayton 2 years honeywell 1 year unless professionally installed) You can add a WiFi gateway at a later date to make it smart. Or or comes as CP4i including gateway.

It is known to have to get stanley knife out and gently trim/scrape a bit of paddle. I live & work in a area where the water is described as aggressively hard untreated that can certainly cause flow switch problems.

DHW pump not shutting down 3 main causes. Flow switch stuck open check with multimeter. Non return valve on heating pump stuck open . PCB fault Exact model number would be useful Grant have made several different combi's.