One reason would be that the "constant supply" may not be as constant in flow and/or temperature as the sales brochure claim them to be.
Noob configuration idea for best of both worlds!
- Thread starter Laggy
- Start date
One reason would be that the "constant supply" may not be as constant in flow and/or temperature as the sales brochure claim them to be.
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A cylinder will give better supply of hot water and boiler need not be high output so at times existing gas line that supplied gas to earlier model could be sufficient ( needs prior check)
Be advised a cylinder needs healthy supply of cold water which is regulated by prv that controls cold water flow to cylinder hence water to your hot tap. Run two taps, regulator steps in to maintain tap flow, three taps run, regulator steps in ( this is the theory and subject to cold supply)
Combi boiler rated to raise cold flowrate water temperature by 35 degree C based on boiler output at any one tap. Limited to one delivery at the relevant spec
Can assure you the delivery and temperature are stable unless other taps run
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If the supply to the house is 15 l/m and combi is rated to deliver 9.8 for 24 kw model, supply not an issue
Rab’s post 20 is excellent, taking those steps should improve poor cold supply flow rate
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Not wanting to hijack the thread, but what model is the noisy one? Looking at Intergas to replace existing boiler, and noise may be an issue.
The newer Xtreme and Xclusive models are noisier than the HRE. If you want a really quiet boiler the ECO RF is the one to go for
Thanks. That will be useful. Unfortunately looks like ECO RF is only available as a combi
The ECO RF can be used as a combi, system, heat only boiler on a sealed or open vented system or a water heater without any rads. You just need someone that knows the boiler properly
Thanks good to know. And when the time comes you don't appear to be that far away.
Thanks good to know. And when the time comes you don't appear to be that far away.
Well I was the senior engineer at Intergas for 5 years
Because the flow rate is much lower through the combi than through the cylinder
Yes…but the flow from the combi is more than adequate for a shower.. no? Bare in mind nothing else would be connected.
I think I’ll just go for the rapid, save the money and hassle with anything complicated and hope it’s fine for a shower and some simultaneous tap usage..
Yes, the combi will happily run one good shower.
Depending on what shower and size of combi is used, I think it will struggle with anything more than one outlet at a time without seeing a drop in HW performance.
That being said if it isn't good enough then the system can always be retrofitted.
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