Logic+ 30 Constantly using water

[GrimsbyAl]

Hi, I've recently moved into a house that has a Logic+ 30 combi boiler. It was fitted in Feb 2011.

I've noticed that there is a permanent flow of water to the boiler, with it using 0.02 cubic meters per hour.

The pressure is 1.2 bar.

The refill loop valves are closed.

I cannot see if there is water coming from the condensate drain or the safety run off as the pipes do not emerge outside.

Does anyone know what the problem is please?

If you need any more details, please let me know.

TIA,

Alan.

 

[Dan Robinson]

How do you know it is to the boiler?

 

[dcawkwell]

If the pressure isn't rising or falling it isn't going into the central heating circuit.
So you have a leaking in the hot water piping of the house somewhere.
This is easy to verify. If you turn off the cold water supply to the boiler at the boiler cold water valve the consumption of water should top.

 

[shambolic]

Doesn't sound like the boiler, sounds like a DHW leak. The boiler won't light to heat water under 4l a minute of flow. (stopped the problem with Isar cycling between heat and hw if there was a dripping tap)

 

[GrimsbyAl]

If the pressure isn't rising or falling it isn't going into the central heating circuit.
So you have a leaking in the hot water piping of the house somewhere.
This is easy to verify. If you turn off the cold water supply to the boiler at the boiler cold water valve the consumption of water should top.

That's what I have done, and the consumption has stopped.

Despite searching for a couple of hours prior to posting, after posting I was directed to a similar topic:

http://www.diynot.com/forums/viewtopic.php?t=268014

where boabcelt said:

"Unfortunately, I've had 2 in the past 3months where the heat exchanger was leaking internally and the water all disappearing down the condensate drain. Both replaced under warranty. According to the Ideal agent, he has seen this on "a good few of these"

So, is that what the problem is?

I'm going to ring Ideal on Monday, but I'm guessing that the warranty wasn't registered within the 30 days and hasn't been serviced as required by Ideal.

If I find out what the problem is, at least I'll know what needs fixing / replacing.

TIA

Alan.

 

[dcawkwell]

If the pressure isn't rising or falling it isn't going into the central heating circuit.
So you have a leaking in the hot water piping of the house somewhere.
This is easy to verify. If you turn off the cold water supply to the boiler at the boiler cold water valve the consumption of water should top.

That's what I have done, and the consumption has stopped.

Despite searching for a couple of hours prior to posting, after posting I was directed to a similar topic:

http://www.diynot.com/forums/viewtopic.php?t=268014

where boabcelt said:

"Unfortunately, I've had 2 in the past 3months where the heat exchanger was leaking internally and the water all disappearing down the condensate drain. Both replaced under warranty. According to the Ideal agent, he has seen this on "a good few of these"

So, is that what the problem is?

I'm going to ring Ideal on Monday, but I'm guessing that the warranty wasn't registered within the 30 days and hasn't been serviced as required by Ideal.

If I find out what the problem is, at least I'll know what needs fixing / replacing.

TIA

Alan.

There is nothing wrong with the boiler. If the either heat exchanger had a problem the pressure in the boiler would be changing. It would either be very high or drop to zero. Pipework in the house is where the problem is I think.

 

[petit_pablo]

I dont suppose ideal would mind charging you for coming and telling you the boiler is ok and the leak is on your hot pipes

Concrete floors perhaps?

 

[Dan Robinson]

+1. Even though it is an Ideal POS, it can't make water magically go places it can't.

The HEX mentioned in the other thread was the main HEX.

You have a drippy tap, or a leak under the floor.

 

[GrimsbyAl]

Thanks for all of the replies, it was a joint that had previously been soldered, but had been changed by the previous owners to a plastic push fit without cleaning up the pipes first so wasn't pushed together properly ( a big lump of solder remained).

The strange thing was, it was in the corner of the kitchen underneath the units, but there was no sign anywhere inside or out of a leak.