Setpoint error

sebc · Posts: 13

When attempting to simulate energy consumption I often (but not always) get an error message thrown back stating that the supply air temperature is greater than the zone cooling mean air temperature setpoint. When I adjust the supply air temperature downwards, the error remains but with a reduced zone cooling MAT setpoint.

Typical error:

** Severe ** InitPurchasedAir: For Purchased Air ZONE 269 PURCHASED AIR serving Zone 269
** ~~~ ** ..the supply air temperature for cooling [8.00] is greater than the zone cooling mean air temperature (MAT) setpoint [6.49].

Any ideas welcome.

Cheers,
Seb

Andy Tindale · Posts: 1149 Location: Stroud

See:

http://www.designbuilder.co.uk/programhelp/energyplus_errors.htm

Error 3 for a description of the meaning of this error and the solution.

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