Grundfos 15-60 Pump Not Working On Correct Pump Rate

[RhysWilliam]

A standard 6m Grundfoss pump head will fit....you may still be able to get one that's normally fitted to many of the Worcester models (around £70 to £80).

However, on the CB24 is is not uncommon for the casing seal to disintegrate when the chamber cover is removed. There's every chance that replacing the pump or pump head will result in many leaks from elsewhere, especially the primary heat exchanger O rings. Terrible boilers. For these reasons it's not reallly a diy option. Running the pump at speed 1 will result in poor hot water performance...needs to be 3.

Would that be an issue when replacing the pump? I would definitely leave the leak to our gas engineer. But as the pump is accessible by just taking off the front cover, I thought it should be as simple as draining the system and removing the pump?

Thanks.

OP, looks like good advice is given but you choose to ignore it. Doing any DIY repair on that boiler will be expensive exercise for you, that you can take for granted. Has many O rings- you disturb the pump, pipes will move, boiler will then leak- PERIOD. Good chance your plumber will side step this one

That pool of water is start of your problems- pool will get bigger moment you start tinkering with it. Boiler needs PROFESSIONAL attention.

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Thanks DP.

Merely arming myself with as much information as possible so I can decide wether to tackle myself or have our plumber do it when he fixes the leak.

Conflicting advice so difficult to determine what to follow.

Either way I know a lot more now than I did this morning when out central heating wasn't working simply by investigating and talking to people, which means any professional that does fix it won't have me looking over their shoulder and questioning every spare part they need to replace and similarly I will be in a position not to get ripped off.

Thanks.

 

[DP]

If you trust your heating engineer, why do you think he is going to rip you off?
If you do not trust him then look elsewhere. Believe you me, there are customers who rip off hard working RGIs too
While I do not have any problem with end user looking over my shoulder, many others wupill get hot under the collar