Y plan upgrade. Is this correct?

[armyash]

Ok, I'm I'm sure i have asked before but I need to check for peace of mind.

Next week I'm putting a combi in, y plan at present.

No loft as been converted to a bedroom and tanks are in a cupboard in this room.

I have done a few y plan to combis but need to double check.

Boiler is going in extension, Ch pipes are here but all 15mm so need to upgrade these to 22mm.

Going to disconnect and remove all pipes at Back boiler. Once I have run my 22mm from boiler and made the necessary connections downstairs I'm going to run my 22mm up to the airing cupboard.

There is a rad in the top room, looks like the F and R are run from the airing cupboard for this rad.

Once the cylinder and 3 port and redundant pipe is out i will be left with the remaining pipes.
Hot and cold I cap (or link cold mains to cold supply from tank if there is one)
The pipe that was AB and A on 3port get linked.
The pipe that was connected to bottom of cylinder coil gets linked to the return pipe from top floor rad under floor (assuming will be closest return pipe).

How does that sound?

What have i missed?

Anything else to look out for?



Thanks

 

[Harvest Fields]

This is all confusing me??? The flow and return to the cylinder become irrelevant and can be completely removed leaving no dog legs. All pipes to and from the tanks in the old loft/cupboard can be removed. And the pipe into the bottom of the 3 port gets linked to the heating pipe from the 3 port. Excuse any errors I’m extremely tired and in bed😕😕

 

[armyash]

Thanks for the reply.

I probably haven't worded it very clearly.

Yes most of the pipe work will be gone.
Link bottom of 3 port to heating. Thats what i meant.

The pipe from bottom cylinder coil - where it runs under the floor, what im left with once the cylinder is gone is what I meant. This links into ch return?

 

[armyash]

Or do i cap it? Will see if I can add pic to explain.

 

[armyash]

I'm over thinking this.

 

[Harvest Fields]

I'm over thinking this.

Yes you are mate. But we all do sometimes 😛😛.You can cap it. But I would completely remove as it leaves a dog leg.

 

[armyash]

Yes you are mate. But we all do sometimes 😛😛.You can cap it. But I would completely remove as it leaves a dog leg.

Thanks
I've done these, just doubting myself.

I need to remove redundant pipe work so no dead legs. Link the flow. Make sure theres a circuit from boiler and back.

Im always like this, once I have removed whats no longer needed it becomes obviouso

 

[quality]

I like your thinking, being logical and getting advice. But a combi install from a Y plan is not an upgrade

 

[Harvest Fields]

I like your thinking, being logical and getting advice. But a combi install from a Y plan is not an upgrade

Cut the lad some slack😛😛😛

 

[armyash]

I like your thinking, being logical and getting advice. But a combi install from a Y plan is not an upgrade

What do you mean?

 

[Harvest Fields]

What do you mean?

Thinks he means Gravity to fully pumped mate

 

[quality]

I mean changing a fully pumped traditional system to a combi is not an upgrade

 

[Harvest Fields]

I mean changing a fully pumped traditional system to a combi is not an upgrade

I know mate. I was saying you class changing a fire & BBU/cast iron floor standing on a gravity hot water / pump heating is an upgrade. Or am I wrong?