Commercial Boiler fitted in a house?

[muggles]

Haha, just looked at the boiler innards. Seems to have an inbuilt pump!

That'll teach me, it should teach Alex too but I doubt that it will.

So it does. Have you noticed it's a big one and not a 15/50 or 15/60? I'd say it's a 26/65...

 

[mogget]

The standard Grundfos domestic 15-60 gives a maximum of 1.1 litres/s

Not once you factor in the pressure drop across the hex it doesn't. But there's no point trying to reason with the fanatical.

 

[muggles]

It is 46 kilowatts. A domestic man can fit it. The law.

The law says that it should be fitted to manufacturers instructions. The manufacturers instructions require that it is fitted by someone with commercial training.

Wrong. the dividing line is 70 kilowatt. Makers cannot overrule the law on classification.

The law requires that it is fitted to manufacturers instructions, which require that it is fitted to commercial regulations. The manufacturers are not overruling the law, the law says that what the manufacturers require IS law

 

[Tibbot]

It is 46 kilowatts. A domestic man can fit it. The law.[/b]

If you are GS registered you should have seen the bulletin/leaflet.

Commercial gas criteria has changed. The old kW, pipe and meter size requirements are no longer in force. Changes include.

* The allowance of 35mm pipe from a U6 meter for domestic up to a carcass volume limit.

* The allowance of domestic ticket work on up to a U16 meter with up to 35mm pipe on a limited carcass gas volume.

* The installation of multiple boilers up to carcass volume limit as long as total output doesn't exceed 70kW limit.

* THE CLASSIFICATION THAT ANY BOILER LISTED IN MANUFACTURERS COMMERCIAL RANGE IS A COMMERCIAL BOILER AND CAN'T BE LEGALLY INSTALLED WITH DOMESTIC TICKET, whatever the output, whatever the meter/pipe arrangement.

It's regulations that have made this change, not the manufacturers.

 

[mogget]

Haha, just looked at the boiler innards. Seems to have an inbuilt pump!

That'll teach me, it should teach Alex too but I doubt that it will.

So it does. Have you noticed it's a big one and not a 15/50 or 15/60? I'd say it's a 26/65...

Quite. Funny how Alex doesn't seem to have noticed though.

 

[AlexCarp]

Haha, just looked at the boiler innards. Seems to have an inbuilt pump!

That'll teach me, it should teach Alex too but I doubt that it will.

So it does. Have you noticed it's a big one and not a 15/50 or 15/60? I'd say it's a 26/65...

Lo and behold it does have a pump! The know it alls were saying it needs an expensive one that you have to buy. But to get the minimum follow through it a domestic speed is all you need. No doubt this pump can pump greater flows, but that is not required for this 5 bed house.

Sorted!

 

[AlexCarp]

The standard Grundfos domestic 15-60 gives a maximum of 1.1 litres/s

Not once you factor in the pressure drop across the hex it doesn't. But there's no point trying to reason with the fanatical.

The makers gave the figures.

 

[ecowarrior]

I have wiped the floor with this Dan fellow, which is not difficult,

Have to say I've just sat down with some popcorn for this as well!
Dan I hope you are suitably chastised?
I am tying to find a link for an extra long handled shovel for this guy as he is digging just the deepest hole for himself.

 

[misterdubya]

Have to say I've just sat down with some popcorn for this as well!
Dan I hope you are suitably chastised?
I am tying to find a link for an extra long handled shovel for this guy as he is digging just the deepest hole for himself.

Thank all that is holy you didn't say spade. Apparently its racist to use one for digging holes with.

 

[AlexCarp]

I have wiped the floor with this Dan fellow, which is not difficult,

Have to say I've just sat down with some popcorn for this as well!
Dan I hope you are suitably chastised?
I am tying to find a link for an extra long handled shovel for this guy as he is digging just the deepest hole for himself.

Dan really was. He wrote he had the makers instructions and said an external very big pump was needed when one was inside. Fun it was.

 

[muggles]

It is 46 kilowatts. A domestic man can fit it. The law.[/b]

If you are GS registered you should have seen the bulletin/leaflet.

Commercial gas criteria has changed. The old kW, pipe and meter size requirements are no longer in force. Changes include.

* The allowance of 35mm pipe from a U6 meter for domestic up to a carcass volume limit.

* The allowance of domestic ticket work on up to a U16 meter with up to 35mm pipe on a limited carcass gas volume.

* The installation of multiple boilers up to carcass volume limit as long as total output doesn't exceed 70kW limit.

* THE CLASSIFICATION THAT ANY BOILER LISTED IN MANUFACTURERS COMMERCIAL RANGE IS A COMMERCIAL BOILER AND CAN'T BE LEGALLY INSTALLED WITH DOMESTIC TICKET, whatever the output, whatever the meter/pipe arrangement.

It's regulations that have made this change, not the manufacturers.

I'll just quote this to see if CrapAlex wants to respond, or if he's going to ignore it...

 

[Agile]

It is 46 kilowatts. A domestic man can fit it. The law.[/b]

If you are GS registered you should have seen the bulletin/leaflet.

It should be pretty obvious to everyone that he is NOT gas registered.

Also to most others that a house only needs its rated heat loss of say 10-18 kW when the temperature is -1 C or below outside.

For over 90% of the year, the actual heat required will be about a third of the maximum and the idea is that the boiler will modulate down but carry on running!

Better to take heed of what the professionals say.

Tony

 

[Dan Robinson]

Hhmmm.... I wonder how much pump head is left after the HEX ? .

 

[AlexCarp]

Hhmmm.... I wonder how much pump head is left after the HEX ? .

Enough to go around a loop in low loss header. The boiler has its own pump has your instructions would have told you.

 

[AlexCarp]

Also to most others that a house only needs its rated heat loss of say 10-18 kW when the temperature is -1 C or below outside.

You are getting there, and the boiler can run at about 12 kilowatt.
Do they let these people out into the population's homes?