Plumbing immersion tank overflow into W/M waste outlet

[TimPee]

Hi everyone!

I looking to remove an overflow pipe run that goes into the bathroom and re-route an immersion overflow into the kitchen and connect it to the washing machine waste.

Currently, the overflow from the immersion tank passes through a partition wall into the bathroom where it connects to the toilet cistern overflow and then continues to behind the bath panel where it connects to the 40mm waste.

I'm installing a new cistern with an internal overflow, so there will then be nothing in the bathroom that requires an overflow.

The immersion tank cupboard is on the opposite side of a partition wall to where the washing machine is in the kitchen.

So I'm looking to remove the overflow run into the bathroom completely and send the tank overflow through the partition and connect it to the washing machine waste outlet via a tee connector and reducer about halfway up the vertical pipe.

I've attached photos of the current immersion overflow and where I'm looking to connect to the washing machine waste.

Would this be ok to do? Any advice is appreciated... Thanks!

 

[terryplumb]

Show us a picture of the "Immersion tank".

 

[Madrab]

'Fraid to say, never heard of such a thing as an immersion overflow. That is a tundish that would usually be connected to a Pressure Relief Valve but given it's plastic overflow pipe then that would suggest it's a condensate pipe from a boiler.

If it's a D2 pipe from an unvented cylinder then it's not right and needs a qualified engineer in to sort it out.

 

[TimPee]

Hi, thanks for the replies.

The tank is an old style 144L 2 element immersion. The reason I thought it would be ok to plumb the overflow from the tank into the washing machine waste in the kitchen is because the waste in the kitchen feeds through into the bathroom waste which the overflow is currently connected to, so thought it’d be Ok being as the overflow from the tank would still be connected to the same waste run just at a different point?

 

[terryplumb]

It's a simple overflow ,you can connect it as you propose.

 

[TimPee]

That’s great, thanks for your help

 

[Madrab]

Ah ok, it's a combination/fortic cylinder, 15mm inlet with a 21.5mm overflow. Yup, as suggested fire away.