Hello,

I'm modelling a Commercial Interior to LEED v4 ID+C. It's roughly a single
floor with purchased heating and cooling piped in to fan coil terminals and
a DOAS.

I'm a unclear regarding the baseline, especially the envelope. Furthermore,
the guidance that is given seems to go against my expectation.

BASELINE

My expectation

What LEED seems to say

Envelope

As existing shell

Same as section 5. Explicitly ignore item (f), existing envelope

Chiller/ boiler

Not in tenants scope so as existing

Not clear but seems to be regular App G/ System 7, etc.

DOAS

Not in tenants scope so as existing

I have a the 2011 version of "Advanced Energy Modelling for LEED" and can't
seem to find any more detail in there.

Are there any good, current, prescriptive sources for how to model this? Or
any simple answers?!

Kind regards

Chris Yates C Eng MCIBSE LCEA