HRV Systems - the mismatch between theory and reality

We´re all doing mistakes in our everyday work, because we´re humans with emotions and different moods and not robots. But this can´t be an excuse for bad workmanship, which is completely contrary against the current regulations.

The theory:

Building Regulations Part F (Ventilation), 1.2.17

"...All duct jointing,collars and components

should be installed to ensure appropriate duct

performance (duct runs should be as air tight

as possible). All joints should be sealed using

suitable sealants or tapes."

The reality: 

The theory:

Building Regulations Part F (Ventilation), 1.2.3.10

"Units should be installed so that the

occupant can easily access them for routine

and regular cleaning of filters."

The reality:

The theory:

Building Regulations Part F (Ventilation), 1.2.1.7

"All duct runs should be straight, with as few

bends and kinks as possible to minimize

system resistance."

The reality:

I need to say that the most installations, I´ve seen during my business activities, are well designed and installed. But unfortunately examples like the above ones do still exist.

As the occupier please take attention to such details, because they will affect your life, not the installers one.