Multifuel Stove + Gas

Thanks for the info Shane. Looks like a lot of copying and pasting there!!
You're right about the control aspect but there will have to a complete change in the mindset of legislators in this country. Too many backhanders during the tiger days and no monitoring of whether the person undertaking the job was fit/qualified to do the job. No wet side quality control whatsoever. Wait until water metering enters the fray. Who will be doing the QC on the installations? Will he/she be qualified?
During these quiet construction times emphasis should be put on proper retraining/upskilling of skilled craftspersons who would be only too willing to achieve a proper certificate enabling him/her to earn a living in a controlled industry. These controls would have to cover all aspects of the plumbing/heating industry, eg, Gas/oil/solidfuel heating , solar water heating, underfloor heating, hot and cold water services, above ground drainage etc, etc This would cut out the thriving black economy and lead to a standardised work ethic and a chance of making a good living form their occupation. There is plenty of room in FAS centres and Institutes of Technology were there are qaulified staff waiting to deliver such courses.

Very interesting exchanges.

Up and over installations of primary flows in bungalows is an industry standard. How else can a flow get to a cylinder if the heat source isn't adjacent to it. Putting cylinders in attics is rare. Once a circuit that never raises and falls and raises again is created, natural circulation will occur.

Back boilers and stoves seem to rattle a lot of installers and the new generation of plumbers have probably never worked on them as the industry is changing and moving which is a pity seeing as they are becoming very popular again.

DavyJones said:

Up and over installations of primary flows in bungalows is an industry standard. How else can a flow get to a cylinder if the heat source isn't adjacent to it. Putting cylinders in attics is rare.

Click to expand...

Up and over installations in bungalows are NOT industry standard. You are confusing common practice with industry standard. Industry standard implies correct procedure. Show me any text book, official technical drawing or otherwise that has that installation installed in that manner!

Can you honestly tell me that during a pump or power failure that system will not bang and will not expand out through the OVSP and probably boiling into the expansion cistern?

Industry standard would be to DESIGN and INSTALL a system suited to SITE CONDITIONS (site conditions being key here). This means that it in a bungalow, the cylinder should be sited close to and above the back boiler in order to achieve the correct primary gravity flow. You do not need to install a cylinder in the attic to achieve this. Just locate the cylinder in a location that is suitable and above the boiler. It's not that difficult. Perhaps architects could take this into account when drawing the little circle in the hot press at the opposite end of the house. However, it is down to the installer to inform the client that the location of the cylinder does not suit a back boiler, for reasons stated above. It needs to be moved or not fit a back boiler. Remember that many houses will not be suited for that installation without implications.

DavyJones said:

Once a circuit that never raises and falls and raises again is created, natural circulation will occur.

Click to expand...

What does this mean??? A circuit that never raises??? Does it not raise when it comes out of the boiler to get into the attic?

Shane007 said:

What does this mean??? A circuit that never raises??? Does it not raise when it comes out of the boiler to get into the attic?

Click to expand...

You misunderstood. I meant the circuit shouldn't have dips in it.

As for the rest of your post. I served my time working with many plumbers. This was done on a regular basis in bungalows, it works. Pump/thermosat failure will of course eventually lead to discharge from the OVSP.

Regardless of how a primary circuit was piped, this would happen if the system over heated, even if a heat dump was fitted.