Hi.
New to the forum and only a keen diy-er but hopefull someone can help. I've done several full domestic heating systems over the years albeit conventional open vented ones.
This time i have a non-domestic(workspace) system planned.
I'll set it out briefly.
20KW 'Burnit wbs active' biomass boiler. (2.5-3bar opp. pressure)..emergency mains fed danfoss safety valve.
21-60 Laddomat pump set up.
1000 litre 'Sunsystem' twin coil buffer tank.
150 litre floor mount pressure vessel.
8 medium sized cast iron rads.
I'm fairly confident I can hook this all up to run. I only need a single heating circuit for the rads with no DHW/draw off requirement.
I'm thinking of fitting a permanent cold main filling loop, check valve, strainer, PRV, pressure gauge, auto vents and possibly using both tank coils hooked up as one for heating.
What has got me stumped so far is trying to work out the pipe layout for the heating circuit. I can't get my head around how the pressurising of the heating circuit occurs. Is it served by tank pressure and opened via a PRV bypass, pumped through the tank coil, zone valve, rads etc?..
If so, will the heating circuit flow remain 'isolated' from the tank and flowing through the tank coil or would it necessarily have to return to the buffer tank and/or Laddomat pump before recirculation.???
Any thoughts much appreciated!!
New to the forum and only a keen diy-er but hopefull someone can help. I've done several full domestic heating systems over the years albeit conventional open vented ones.
This time i have a non-domestic(workspace) system planned.
I'll set it out briefly.
20KW 'Burnit wbs active' biomass boiler. (2.5-3bar opp. pressure)..emergency mains fed danfoss safety valve.
21-60 Laddomat pump set up.
1000 litre 'Sunsystem' twin coil buffer tank.
150 litre floor mount pressure vessel.
8 medium sized cast iron rads.
I'm fairly confident I can hook this all up to run. I only need a single heating circuit for the rads with no DHW/draw off requirement.
I'm thinking of fitting a permanent cold main filling loop, check valve, strainer, PRV, pressure gauge, auto vents and possibly using both tank coils hooked up as one for heating.
What has got me stumped so far is trying to work out the pipe layout for the heating circuit. I can't get my head around how the pressurising of the heating circuit occurs. Is it served by tank pressure and opened via a PRV bypass, pumped through the tank coil, zone valve, rads etc?..
If so, will the heating circuit flow remain 'isolated' from the tank and flowing through the tank coil or would it necessarily have to return to the buffer tank and/or Laddomat pump before recirculation.???
Any thoughts much appreciated!!
