That's why I have been eating a lot of steak lately!
WB 30CDi being installed Monday - does it need notifying?
- Thread starter scotster
- Start date
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As I've said in the past, I think a combi devalues the property, especially a 4 bed semi.
It's when you come to sell and a family are looking to buy.
A good heat only boiler is far better and 10x more reliable.
It's when you come to sell and a family are looking to buy.
A good heat only boiler is far better and 10x more reliable.
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14 li/min measured as an open pipe flow will equate to perhaps 10 li/min when its gone through the boiler and a shower head.
Thats not even as much as the boiler can heat!
What is more relevant is to measure the dynamic flow. Thats the flow rate with a remaining pressure of 0.5 or 1.0 Bar and gives a better indication of the flow rate that would be achieved in practice.
An installer who quotes for a combi to replace a heat only boiler without measuring the mains water flow rate, is stupid beyond belief and letting himself in for the likelyhood of fitting a new boiler and then not getting paid for his work when it does not perform properly.
Tony
Thats not even as much as the boiler can heat!
What is more relevant is to measure the dynamic flow. Thats the flow rate with a remaining pressure of 0.5 or 1.0 Bar and gives a better indication of the flow rate that would be achieved in practice.
An installer who quotes for a combi to replace a heat only boiler without measuring the mains water flow rate, is stupid beyond belief and letting himself in for the likelyhood of fitting a new boiler and then not getting paid for his work when it does not perform properly.
Tony
Depend on size of bath and how deep you like the water! Why not fill your bath from the existing tanks, time how long it takes, calculate approx how much water and work out the flow rate?
The 30DCi gives a temperature rise of 35C at a flow rate of 13.1 L/min; so it will be OK most of the time. But if the incoming water is very cold - below 5C - you may have to turn a shower flow down to get hot enough water.
All very good points thanks and I can now be confident of getting the job done right..
Cheers.
PS. - Is there any scrap value in the copper tank?
Loads if you take the lagging off.
I would hide it in the garage so you can put it back later.
You have me a little worried now about the flow rates availble. If I did change my mind and decided against the combi what would be my options please?
I need a system (boiler + hot water storage vessel of some sort I assume) that will fit in a large kitchen larder style cabinet (H 2100mm x W 600mm x D 570) ?
I can keep the header tanks I have in the loft if needed.
I need a system (boiler + hot water storage vessel of some sort I assume) that will fit in a large kitchen larder style cabinet (H 2100mm x W 600mm x D 570) ?
I can keep the header tanks I have in the loft if needed.
Point taken
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