Matthew, do the drivers cabs on the Variotram have their own independent A/C or do they use the modules unit?
For example in the Melbourne B2 they use the modules unit, wheras in the Combino the drivers cabs have their own unit.
No separate air conditioning for the driver. The cab has a pair of booster fans that increase the airflow - at the expense of air flowing passenger space - the booster fans just 'suck' down on the air ducts from the air conditioning pod.
The Vario airconditioning is rated at 26kw cool, 8kw heat. The manual doesn't state the efficiency figures so I don't know how that cooling figure turns into a power consumption figure. 26kw is the ability to move heat, not the power consumption to do it.
Many 'modern' designs have a separate 'fan coil' unit for the cab to allow separate temperature for the driver from the passenger space.
The Aux converter is a bit of a monster, 40kVA output on 3 phase AC + 9.8kW of 28v DC.
(The AC is in VA not Watts, but the Watts would be the same if the 'power factor' on the AC side was unity)