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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.

Remove oil pump see if shaft turns freely with your fingers. Check if fan rotates freely any resistance normally bearing gone on pump side of motor. Bearings are replaceable but we just fit new motor.

I've been involved the the cast iron/range type cooker market for many years. Was a agent for the much more efficient Stanley cooker (oil gas and solid fuel) and Bosky wood burning cookers . I have a full time oil service engineer and look after a fair number of oil aga's . As a group the aga...

Clear pictures of pipework showing pumps motorised valve and pipework layout would be useful. Oil systems of that age often used 2 pumps wired through relays. Systems with a single zone valve were also not uncommon.

If you have a multimeter and are competent to work with mains voltage first thing to check is that the flow switch is operating correctly.

You can get tectite classic fittings apart using a bahco type adjustable spanner. Just adjust so it slides on tube, works somewhat better than the demounting tools!

That version features Wilko Johnson on guitar Norman Watt-Roy on bass and Dylan Howe on drums (Wilco Johnson band). Absolutely manic live always played set strait through not stop! Just off out to see Norman play a blues gig in Mansfield £10 at the door absolute bargain.

Name or clear picture of thermostat/receiver please . There are many different ones available!

Danny Thompson Bass player Worked with Pentangle John Martyn Richard Thompson played with the transatlantic sessions group also jass with the likes of Stan Tracey and Tubby Hayes. Many years as a session musician played on hundreds of tracks including Cliff Richards congratulations! Saw...