Re: [EnergyPlus_Support] OA reset Schedule_ASHRAE 90.12007

["'jeannieboef@xxxxxxxxx' jeannieboef@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

It sounds like you reset the coil water temp, yet still require a outlet air temp that is not achievable with those water temps.

Mit freundlichen GrüÃ?en- Sent from my iPhone (excuse the brevity)

i. A.

Jean Marais

b.i.g. bechtold

Tel.   +49 30 6706662-23

On 23.02.2015, at 21:04, "Harshul Singhal harshul263@xxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Hi

I am trying to assign OA reset schedule (as per ASHRAE 90.1) for HW and CHW loops. Interestingly it gives millions of errors for Water Coil controllers. If I use simple SetpointManager:Scheduled, it doesnt give errors. Can you please look into it and see what's the issue in here? I am also attaching IDF file, snapshot of my OA reset schedules & errors.

ErrorType:

FindRootSimpleController: Controller error for controller = "CONTROLLER WATER COIL 11"
   **   ~~~   **  Environment=RUN PERIOD 1, at Simulation time=03/03 10:00 - 11:00
   **   ~~~   **   Controller function is inconsistent with user specified controller action = "" action
   **   ~~~   **   Actuator will be set to maximum action
   **   ~~~   ** Controller control type=Temperature
   **   ~~~   ** Controller temperature setpoint = 11.19 [C]
   **   ~~~   ** Controller sensed temperature = 13.01 [C]
   **   ~~~   ** Controller actuator mass flow rate set to 7.39 [kg/s]
   **   ~~~   ** Controller actuator temperature = 13.33 [C]

Severe  ** FindRootSimpleController: Previous controller action error continues for controller = CONTROLLER WATER COIL 4
   *************  **   ~~~   **   This error occurred 3746 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.

Thanks!

Regards,

Harshul Singhal

"save world, save trees..!!! print the mail if required very urgently"

<3_02232015_VAV_Eplus.expidf>

<OAreset_ASHRAE90.1.jpg>

<3_02232015_VAV_Eplus.err>

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Posted by: "jeannieboef@xxxxxxxxx" <jeannieboef@xxxxxxxxx>

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