Removing a solid fuel back boiler

[Walls_c]

Looking for a bit of advice...

We want to remove an old solid fuel back boiler to install a multifuel stove with back boiler.

Our current Grant back boiler is connected to both radiators and hw tank (piped in place of immersion)
Is there any way of disconnecting the heating circuit to allow drain down of back boiler but still allow the oil boiler to keep functioning or am I wanting too much from the installation?! Would it be better to just turn off feed to f+e tank and drain down entire system? I'm scared to touch anything until I get my head around it all!

Lastly, should the connecting of the new stove be simple enough seen as the pipework is already in place or is there anything important I need to consider?

Many thanks

 

[Best]

Hello and welcome. There is far too much for you to consider here and I suggest you get a heating engineer who is specifically familiar with solid fuel link ups. HETAS is a qualification for solid fuel heating required for much of the UK. It's too dangerous, both in the water side and the flue gas side to mess about, like a lot of people do.
The answer to your question is yes, it is possible the oil can be kept going but that might require some temporary alterations to pipes.
The solid fuel stove must be piped to MIs and the chimney and air supply are critical.
Post your approximate whereabouts if you want some of the plumbers fairly local to you to do any work

 

[Reg Man]

Oil is a controlled heat source. Solid fuel is an uncontrolled heat source. You are not allowed to connect the two systems directly together. You can use something like a thermal store on the solid fuel for separation and use the coil on the store to connect up to the oil heated side of the system.

 

[Inverness]

Or use a neturizer but means the who system will be open vented.

 

[Unregistered]

This is the way it has been for many years before we even bought the house 8years ago. It is an open vented system. The back boiler has its own pipework and circulating pump in a 'builder hatch' at the side of the fireplace. In place of an immersion heater, there is pipework connected into the top of the hw tank to allow the water to be heated by the back boiler and then the oil boiler would heat the water via the coil? Is that not it separated?
I understand about the controlled vs uncontrolled heat source which is part of the reason we would like to be changed as we feel it is slightly unsafe. Plus the stove contains a lot of the dust that an open fire doesn't!