Probably in some sort of government institution.
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The control interface on ATAGs are complex. One of the biggest gripes of installers and a big put off. Intergas an day. They are built like tanks. They come with weather compensation and OpenTherm as standard as well. If the installation in question does not have weather compensation (it will not have Opentherm for sure) this is the time to update and get a superior control system.
Youtube has vids of the factory, making them. No boiler is designed like them. The whole back panel of the boiler is the heat exchanger. They can be open vented or sealed - in the combi form the only boiler that offers both. It can be used as a multi-point without filling the heating side leaving that dry. Intergas have stated that none of their heat exchangers in over 25 years have failed. They use simple controls.
More details of your heating and hot water would be beneficial.
I find that all modern boilers and controls are over complicated, they are all competing with each other , and all offering different options , that lets be honest are not needed, I am a big fan of Vokera and it is my first choice of boiler simply because of the support I get, other installers will have good relationships with other manus, as advised , find an installer that will become your regular bloke to service your boiler, and make sure you have a good service, too many manus finding ways of dodging long warranties, get an installer who will take the flack and has contact with his/her rep and can get stuff sorted if their is a problem
The latest boilers have simpler touch screen user interfaces. Navien, the world biggest combi maker, has touch screen displays on the front case. They do not have outside sensors for weather compensation using sat-nav to get the outside temperature. Even Ideal and Keston (same boiler with Keston having the twin extended flue option) have simple liquid crystal menu displays, but simple knobs for the user.
OpenTherm is easy to connect up giving excellent modulating control. I have had these EPH Combipack thermostat/timers fitted. So simple for users to understand, with Opentherm control. Just connect up and it does it all for you. The complexity with installers is understanding the control system. That is why some stay with one maker - because they understand the error codes, etc.
A nice Yorkshire accent...
I prefer the looks of Heatmisers and others myself, but customers like them and they are cheap, Opentherm, RF, doing the job nicely.
https://www.builderdepot.co.uk/inte...i-boiler-jig-valve-set-including-spacer-frame
https://www.builderdepot.co.uk/intergas-hre-sb-30kw-compact-system-boiler
The system only boilers are more expensive for that kW rating. So a combi as a system can work. If there is an adjacent tap the water section of combi side can be used.
This boiler is a dream compared to the old Barcelona. The Barcelona was one of the first condensers on the UK market about 20 years ago.
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I see the Barcelona only heats a thermal store. I assume a direct one by the explanation:
https://www.diynot.com/diy/threads/baxi-barcelona-ignition-lock-out.165051/
The Intergas can be open vented or sealed so fitting the bill on that point. Need more details of how the boiler is connected to the thermal store - maybe a diagram. The pipe layout, does it have a blending valve on the return from the store. The anti-thermal siphon 2 port valve can be opened and closed via the boiler's pcb - simple. The internal Intergas pump will do.
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A detailed repair on the Barcelona:
https://www.diynot.com/diy/threads/baxi-barcelona-ignition-lockout.99196/page-3
https://www.diynot.com/diy/threads/baxi-barcelona-ignition-lockout.99196/page-3
Baxi is not the standard british gas boiler. Worcester is. Personally fit a worcester as more people carry parts for them... however vailant are a better boiler.
Are they ?
Bernard, I gave the links and prices
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The Intergas and Navien's are far superior to those three, as are Viessmann, except those with the rubber hoses inside. Ideal are not bad these days, however fit a shock arrestor on the cold inlet of the combis as they have plastic hydroblocks. Fit arrestors on all combis with plastic hydroblocks to avoid failure in years to come.
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It's not the material, look at the max pressure rating on the spec. Some brass hydro blocks are 6 bar, some composites 10 bar. The strength is in the weakest point not the strongest. Brass wear out O rings quicker too.
If you mean the two Builder's Depot links then the prices are probably those that Builders Depot decide for the boilers.
The marketing of Intergas boilers does make for interesting reading.
from Builders Depot site
""3 Years parts and labour warranty as standard and this can be extended to 7 years""
how much does the extra 4 years cost.
""Only 12 components, including 4 moving parts""
How does one decide whether an item is "a component" or is not "a component"
There are at least 11 "U" bends with at least 22 soldered ( or maybe now brazed ) joints as part of the heat exchanger.
Plastic hydroblocks in British boilers are problematic. Viessmann are better. Fit the shock arrestors in all combis, they are cheap.
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