[Equest-users] CURVINV Errors

Ömer Moltay omoltay at mimtarch.com
Tue Dec 6 10:12:41 PST 2011


Hi Shaun,

Thanks for the reply. I know that by autosizing these will go away, but 
this is regarding the baseline model and I have to enter specified 
kW/GPM values. Actually these warnings started appearing after I entered 
these manually.

We have lots of pumps in our model, so we now have a lot of warnings. I 
guess that would be a problem for the LEED review.

Omer.

06.12.2011 19:45, Shaun Martin yazmış:
> Hi Omar,
>
> To my knowledge Hirsch&  co have never properly explained these error
> messages to this group.  I regularly find the program won't accept the
> design pump values.
>
> Basically the program doesn't like your combination GPM, head, and kW
> entries.  Usually, if you let the software autosize the GPM or head (or
> both), the error messages will disappear.
>
> Shaun
>
> Shaun Martin LEED AP
> Principal
> Shaun Martin Consulting
> 2060 Pine Street, Vancouver BC V6J 4P8
> 604-789-1095
> smartin at shaunmartinconsulting.com
> member CAGBC, ASHRAE
>
>
>
> -----Original Message-----
> From: equest-users-bounces at lists.onebuilding.org
> [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of
> omoltay at mimtarch.com
> Sent: Tuesday, December 06, 2011 6:55 AM
> To: equest-users at lists.onebuilding.org
> Subject: [Equest-users] CURVINV Errors
>
> Dear All,
>
> How significant are the following warnings and why are they caused? In our
> baseline model we suddenly started having probably around 100-200 of these.
>
> CURINV: Result out of limits for CURVE:
> -0.035642  0.078769  1.353483  0.015932 -0.369414  0.000000  0.000000
> 0.000000
> X, Y, and Z:  1.300000  0.000000  1.352446 MMDDHH:   8  26   9
> CURINV: No real root for CURVE:
>   1  1.353483  0.015932 -0.369414  0.000000  0.000000  0.000000
>
> These are related to our chilled water pumps.
>
> Thanks for any help,
>
> Omer Moltay
> Mimta
>
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