Greetings,

Regarding the Section 6.5.6.1 and specifically the exception 5., we’d like to ask for some clarification in case that more than 60% of the outdoor air heating energy has been provided.

1. The energy is provided from site-recovered energy. Does it mean that this could be a heat exchanger (plate or energy wheel type), which as part of the respective AHU is recovering energy from the exhaust air?

2. The energy is provided from site solar energy. Does it mean that such solar energy could be from photovoltaic panels, which save the fam power energy of the respective ventilation device.

Your support and comments are highly appreciated.

Thanks.