Some of that is wrong or doesn't apply in the UK.
To decide whether your shower can be supplied by a combi, you need to measure the amount of water coming out of it, and you need to know what pressure it requires.
Measure one with a jug/bucket, and ask your water provider about the other, or measure it with a gauge(£12).
In other words, that's the resistance of the valvery matters, as does the size of the holes in the outlets.
Depends on your present pump too - if it's 4 bar you'll never get the same performance from a combi!
You won't get much saving by using a combi rather than a store. Most of your gas goes to heat the house, normally. Some of the losses from the cylinder do go to heat the house.
NB a CD50 is a storage combi, the flow rate is not exciting at all once the store is used.
To decide whether your shower can be supplied by a combi, you need to measure the amount of water coming out of it, and you need to know what pressure it requires.
Measure one with a jug/bucket, and ask your water provider about the other, or measure it with a gauge(£12).
In other words, that's the resistance of the valvery matters, as does the size of the holes in the outlets.
Depends on your present pump too - if it's 4 bar you'll never get the same performance from a combi!
You won't get much saving by using a combi rather than a store. Most of your gas goes to heat the house, normally. Some of the losses from the cylinder do go to heat the house.
NB a CD50 is a storage combi, the flow rate is not exciting at all once the store is used.