On Sat, 18 May 2019 10:33:20 +0100, Harry Bloomfield
wrote:

Archibald Tarquin Blenkinsopp Esq expressed precisely :
Diagnostic abilities?

The ability to diagnose part xxyyzz being defective and finding that
the part is obsolete or costs nearly as much as the original boiler?

Much like vehicles too, but would you want a vehicle these days as
basic as an Austin 7?

Our new Vailant can inteligently decide just how much heat it needs to
produce to meet its desired room temperatures, taking into
consideration the outdoor temperature and indoor. It doesn't overshoot,
rather it learns what is needed and can modulate right down to match
the demand. The pipes don't creak and moan anymore.

The previous boiler either ran and produced full heat, or none, though
it did modulate, it only modulated based on its internal temperature.

Hmm! I don't disagree that the control abilities of modern systems are
impressive.

I had a range of logging apparatus at my disposal and when in the
company offices used a few USB loggers to check the temperature.

The day used to start ok but towards 5pm it was bloody freezing.

Logger at 8:00am 21 degrees

Logger at 5 pm and all the times between 21 degrees.

All this technology to keep a somewhat dodgy analogue electrochemical
device at a desired temperature. :-)

I should really have turned the heater down in the car for a few
months to see if it improved the office heating, but I wasn't keen on
that approach.

AB