New Combi Boiler - Powerflush vs Chemical Flush

[alltec]

I'm going to get a new Combi-Boiler installed, but the installer (which I must use as its under a government scheme) has said they will only Chemical Flush the system, not Power Flush before installation.
Would this be sufficient? And would this cause warranty problems - I was looking to get a boiler with as big a warranty as possible (7 or 10 years).
Thanks for advice.

 

[galaxy_plumbing]

do you pay anything?

 

[IDCHAPPY]

I'm guessing no.

 

[gassafe]

Beggars can't be choosers...

 

[woodytheplumber]

when the install is done get a local Gsr or Plumber to come round, power flush the system and sort out any shoddy work that often comes with government funded schemes

 

[Masood]

There is no simple answer. The system may be clean enough that a chemical flush would suffice, or it may need more. Manufacturers require the system to be flushed but I don't know of any that specify powerflushing over chemical or even just a mains flush. British Standards also don't specify the method.

You're getting a free boiler and installation, be thankful for that!

 

[Mike Jackson]

Power flushing a combi boiler in unnecessary. Why go to all the bother of connecting a pump up when you've got a connection for mains water straight into the system.

 

[Ermintrude]

Power flushing a combi boiler in unnecessary. Why go to all the bother of connecting a pump up when you've got a connection for mains water straight into the system.

My mains dosnt run at 500lpm?? But I'm a fan of mains flushing

 

[LPC]

You'll be needing that big warranty.

 

[AWheating]

mains flush can work well, but it wont move what a powerflush machine will. whats needed depends on the system. The answer cant be guessed without taking a look at the system and its condition.