I am working on a Gym/Exercise facility with a pool.  My HVAC system has 20 Heat Pumps, 6 Energy Recovery Units, 4 heat exchangers, 35 pumps, a dehumidifyer, 3 expansion tanks and 3 boilers.  I called Trace help to confirm that like with a Geothermal system the heat pumps must be averaged if they are going to share the same water loop. 

Also as usual, this means I can not even remotely accurately represent the sytem that was designed as only some heat pumps have water side economizers, some fans/pumps are variable, etc.  I can't reflect 4 ERVs in one Heat Pump system.  I certainly will have difficulty representing the differing figures for the pumps, etc.  This is a Taco Load Match system with a pump per heat pump.

The suggestions from CDS help was to either average everything (this is a suck and does not reflect the system even remotely in my opinion!) or to create 20 different plants but just know that they won't share a loop.  Well that also doesn't cut it. 

Anyone have any helpful ideas?  I don't understand why HAP can accurately reflect more than one heat pump on a Loop but Trace can not.  This is not impossible and its beginning to really piss me off.  Every single model I have done has had heat pumps in it and I have never been able to reflect the time, energy and savings the engineers work hard to design.  Very frustrated today. 

Monique