The best video and the most information I've seen on the subject. Thank you

Great video lads thank you

Excellent explanation. Thanks

Great video thank you. May I ask if any of you have come across the Heat Hero and if you have any views on how it might compare with the systems you describe in your seminar? Many thanks.

Thanks Harry & everyone. I & many others did design training with the Solid Fuel Advisory Service here in Glasgow in the early 80’s. It was a fantastic grounding for me & others, it helped greatly in my Heating Installer career over the last 50 years. Many of the systems Harry described, we installed using the SFAS designs. Cylinders remote from Stoves in bungalows etc etc. Primary Flow & Return Pipes crossing attics was fairly common back in the days of Coal Central Heating. Some of the auld boys thought it was wizardry & said it would ‘never work’, but we proved them wrong. They were from an age of Cylinders Sited directly above Fires & Boilers. Thanks for sharing & luv from Scotland.

Nothing less than brilliant.

Harry the legend!!!

Thank you for the very good diagrams and the explanations here. When there are only two pipes connected on to the solid fuel boiler, then the solid fuel boiler when there is no heat source in the solid fuel boiler is going to act as a radiator and be heated by the oil /gas boiler and the hot water going in to it from the oil or gas boiler is going to create heat in the solid fuel boiler which will act as a radiator and allow all of the heat to escape up through the chimney. To prevent this from occurring there should be four pipes connected onto a solid fuel boiler, and a nonreturn valve can then be fitted to the two pipes from the oil or gas Central Heating boiler

I have a x4 pipe system in the back of a wood stove with back boiler. Now going to change to a pellet stove to heat rads and hot water in a tank in loft. the pellet stove has a pump and expansion vessel inside of it...and only x2 outlets..hot and cold. How to go from x4 pipes that used to come into the rear of the old stove to go to x2 pipes with the new pellet stove? thanks for help

Is it ever possible to have two storie riser powering a system with the tank and the stove both on the ground floor ? Thanks

Interesting but the diagrams are blurred and i cannot read the annotation.

is it possible to have a system using solid fuel 2 x rads and a cylinder without any pumps or stats? do you have a drawing please?

What a shame the diagrams are impossible to read.

Take screen shot of diagram- then enlarge it in photos

What a pity his mouse arrow is pointing to different parts of the system than the part he is speaking about, and the diagram writing is to small to read.

I have a x4 pipe system in the back of a wood stove with back boiler. Now going to change to a pellet stove to heat rads and hot water in a tank in loft. the pellet stove has a pump and expansion vessel inside of it...and only x2 outlets..hot and cold. How to go from x4 pipes that used to come into the rear of the old stove to go to x2 pipes with the new pellet stove? thanks for help