15mm vs 22mm pipe

We have just had a 30kw worcester bosch combi boiler installed in our property - with 15mm infeed and DHW pipes as per the manufacturers guidance. The issue is, we have installed 22mm pipes for all the hot water outlets (shower, bath and hot taps) in an attempt to improve flow. Is there any risk of performance being impacted from the hot water leaving the boiler going from 15mm to 22mm? (the water mains supply is 32mm PDPE).

2 Answers

Luke
2 Reviews, 100% Positive
No risk and it want improve
22nd Nov 2019
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Kingswood uk
0 Reviews
Yes this will reduce pressure as you are changing from but the issue is how much of a 15mm pipe you're using how long if it's a short distance that shouldn't be too much of problem
7th Dec 2019
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