glow worm CXi 30

[kevplumb]

all very nice

plenty of scribbles but no understanding

if temp is heat

why won't a smaller boiler provide the same output the gas burns at the same temp

 

[shaun123]

Are you really a plumber? temperature is a part of the heat calculation if the other constants are fixed the heat input to the water will be limited by the max temp it can rise too, so if you set the max temp on the system to say 50 deg c you will not be able to transfer all the energy available similarly if there is not enough energy available you will not get to the set point its not too hard

 

[kevplumb]

the only time temp comes into the calculation

is when the temp rises as an effect of the heat input


if your so flaming smart

why are you asking for help

 

[shaun123]

all i asked for is how to get the temp to rise past 50, no help was recieved, except for some good pointers,

the PCB must have been altered in one of the repairs, if these are altered the boiler can run to its design temp

with regard to the temp, we will just have to disagree, i belive you are totaly wrong temprature is a limiting factor for the energy tranfifered to the water, nuless you can infinitly increse the pressure you cant have it all ways

 

[ollski]

Holy carp, imagine picking up a job at that house

 

[shaun123]

hmm, Charlatans I assume, don’t like being challenged? You can’t preach custom and practice methods as fact, they may work well, but without challenge you will never move forward

I am surprised by the last comment, if you were thinking of using this plumber, don’t he does not like questions being asked of how it works or why a particular setting is used, my opinion is based on his comment

This forum would seem to attract opinionated untrained trade’s people are we back in the 70’s

 

[kevplumb]

no you just don't understand basic concepts

 

[shaun123]

It would seem that you cannot evaluate engineering design principals: lol:
Best laugh I’ve had in weeks
I’ll set the temp at 30 as it will make no difference the house will still heat up and the boiler will be at its most efficient what ****

 

[kevplumb]

I’ll set the temp at 30 as it will make no difference the house will still heat up and the boiler will be at its most efficient what ****

did i say that smartass

It would seem that you cannot evaluate engineering design principals:

stick your principals where the sun don't shine

another flamin desk jockey

 

[shaun123]

Smart ass better than being a dumb ass Neanderthal plumbing man, the missing pipe you have missed the whole point go get the hammer and give it a clout it sums up the advice!

 

[mickyg]

why does the manufacture not state this in his installation manual

because they only need to sell it to make a profit not educate the user. Its down to the installer to set up the system and explain it to the customer.

the out put temp of the water is arround 75 deg with return arround 59 so to gain the efficiency if i reduce to 70 i should be lower than 55

yes thats a good idea, as it will now condense and therefore run more efficiently. (de ja vu ?)

if this is so critical to the effiecy, why are these boilers rated as A if they can operate outside this range?

because they test them in a perfect scenario, using pointless calculations and running the boilers at temperatures unsuitable for real life scenarios, its down to the installer to try and get as close as possible to to "perfect scenario" and educate the customer to do what he says and don't question his superior knowledge

means bigger radiators to transfer the heat,

yes bigger rads are better for condensing boilers as you can run them at even lower temps to heat the room

means more pipe

no

more water

a little if you upgrade the rads

larger expansion

possibly

larger boiler

no

but i know nothing about boilers

we can see that

still confused!!

confusion is a product of ignorance

 

[Whitespirit66]

Blimey Kev, you got yourself a real live budget Professor Stephen Hawking.

What an arrse!

 

[ollski]

I am surprised by the last comment. If you were thinking of using this plumber, don’t. He does not like questions being asked of how it works or why a particular setting is used. My opinion is based on his comment.

This forum would seem to attract opinionated, untrained trades people, are we back in the 70’s?

He's also not a plumber.

 

[shaun123]

thanks for the help, realy i dont fully agree with all of the coments but around 80%
i have been a tad mischevious, but it was not meant to be insultive
the boiler in noe running arround 75 with the return between 66 and 60 all i was after was a bit of help as the boiler was not working corectly, if no one else knows, there are 4 jumpers on the front pcb these when altered change the max temp available on the user dial, helpfull if you have set the boiler to run to a set temp

with regard to the heat v's temp argument, i know temp is not the be all and end all, but it is the only indicator of energy contained in the system
if the boiler is sized near its max duty, and the rads are sized exactly on thier required heat denand, operating the boiler at a lower temp will reduce the energy available

cheers


shaun

great fun though will do this again, maybee?