Dear All,

For my baseline model, involving System 5 Packaged VAV as well as a few System 3's, I am having small but steady gas consumption under the heading "Pumps & Aux". The consumption is about 1,000,000 BTU each month. In total, I have 13,700,000 BTU of pump gas consumption compared to 2,444,700,000 BTU of space heating gas consumption.

Why gas consumption for pumps? Some new technology I do not know about? Or is this something for auxiliary under "Pumps & Aux", which again I have no idea what it could be.

Thanks for any replies,

?mer Moltay, LEED AP