Dear Alan,
Try turning the coil off via availability schedule during the cold weather hours.
The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Jackson, Alan
Sent: Monday, February 28, 2011 5:16 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Low Ambient DX performance curve
What steps would need to be taken to eliminate the low ambient temperature warnings for Unitary DX systems?
** Warning ** Coil:Cooling:DX:SingleSpeed "PSZ-AC 1_OFFICE COOLING COIL" - Air-cooled condenser inlet dry-bulb temperature below 0 C. Outdoor dry-bulb temperature = -0.60
The warnings suggest modifying the performance curves, so my first question is does anyone have modified performance curves that they have used? Secondly, without adding a heater is there a way to eliminate the warning or lower the low-ambient limit?
Than
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