Installing new boiler

[jon]

Just a warning and a pre-emptive thank you to the group, as I have taken it upon myself to install a combi condenser boiler myself. Consequently I will be bombarding this group with a whole host of questions, most of them probably very stupid. I've bought the boiler using an Energy Efficient Voucher, price exc vat £610 for and Ideal Isar 30HE, with standard flue.

Today I cleaned the old system with x400 sludge remover. and replaced two old non-convector single fin radiators with double convectors (though haven't plumbeed them in yet for obvious reasons.

I will be flusing all the radiators out with a hose once the x400 has been worked through the system.

Jon

[Andrew Gabriel]

How does one go about doing that, and is it a significant saving, or do you get tied to buying it from somewhere expensive to start with?

[Doctor Evil]

[jon]

See here:

them a ring and ask for an application pack. Very friendly, and efficient.

Jon

[Doctor Evil]

- Make sure you put a strainer on the heating return to the boiler, you may want to put a full bore valve either side to clean the filter. This is very important.

- Make sure you fully flush the existing system.

- Have the cold pipe supplying the combi run back to the stop-c*ck. Have "no" cold water tees off this pipe. Take only one tee off it, just before the combi, the cold feed to the shower mixer.

[jon]

Where can I get this strainer-thing. Just had a quick gander on screwfix and couldn't find anything.

Cheers

Jon

[Doctor Evil]

Part No. 7533

boiler manufacturers state that one must be fitted on new and old installations.

[andrewpreece]

My Vaillant combi came supplied with one - just like a tea strainer, it fits in the pipe/compression fitting where it connects to the combi. If you already have the combi have a poke through the bits that come wth it.

Andy.

[David Hearn]

conversion kit where appropriate. Prices correct 20/2/04. All boilers are SEDBUK rated A, and include a 2 year warranty. £50 cashback per boiler is no longer available, but we hope to re-institute this sometime in the next few months. More complete range of boilers (including LPG and oil) available, please phone for details.

[Ed Sirett]

The Ideal also comes with.

[jon]

There is a filter/flow regiulator on the DHW inlet, but not on the CH return.

Jon

[Doctor Evil]

Consequently

Put a strainer on the CH return with a full bore valve either side. Then empty and clear this regularly over the first year or so. Putting in X400 doesn't clear everything. I prefer the stronger Fernox CH cleaner that does get rid of almost everything. Well worth it.

Alpha boilers have an integral cyclone that catches all the debris and a trap to release the debris. This should be done on each service.

[jon]

You've told me to do this on four other replies, so the brain washing finally paid of, as I've just ordered the stuff form BES.

Jon

[Doctor Evil]

Good.