Another oversized and poorly designed commercial system

[@waldomeyer-wentzel3583]

This is more often than not the fault/intention of the M&E specifier. The more complex the design, the higher the value of their bill. They know it's oversized but also know the client hasn't got a clue what the requirements are so they just design away and invoice accordingly. Then we come along and are told to stick the the design and just install what's been specified. Plenty of rogue traders in the supposed professional industry... Thorough video as always Andrew, thank you.

[@normanboyes4983]

Oooo that’s another interesting project. I am surprised they needed to use the boilers - the multiple pumps churning the water up should have been able to heat the place.😉

[@lmc7701]

Sounds like a major simplification and improvement planned. Personally I would want to retain a low loss header as planned with the viessman header but configure system to keep the 3 port mixer for ufh. Fit smaller correctly sized circs.. I would do this so I have redundancy if one boiler fails. So either boiler can provide for any demand. Ufh, rads or dhw. Interesting video, thanks for sharing.

[@andrewmillwardwatford9410]

I can't retain this low loss header if I'm going to use it to supply to circuits as it is incorrectly designed for this purpose.

[@janeg1685]

EXACTLY THAT - 20years in contract pipefitting, I all ways saw that virtually on every job - their fee usually 5% of contract price.

[@maxsmith4820]

I see this sort of thing all the time on heat pump installs on big houses, simplify where possible!

[@CommercialGasEngineerVideos]

I've seen plant rooms in palaces and can tell you for free that this looks better. Guess they are trying to make money off the material mark up. Go on Andrew, get those robbers b4 it's too late😮

[@joe90d2]

They must have shares in pump company 😂

[@CommercialGasEngineerVideos]

On a serious note, which big company on the stock markets owns or makes pumps. I'd love to know

[@griffithsheating]

That’s about 2kw worth of pump power 😅

[@dannywilkins887]

That would have been designed by a m&e consultant, they always oversize everything I’ve seen endless times

[@matthewtrueblood408]

Totally agree. Most m&e consultants just copy & paste from other tenders. Seen it so many times. But over-engineering & over-specifying also happens domestically. We see a lot of the blue van brigade quoting to putting 30kw heat only boilers when we do a full house heat loss survey that comes to about 16-18kw. Crazy

[@hiltonshaw5528]

Standard nonsense on most commercial installations