[Equest-users] BDL Boiler Errors

[Mike Raiva]

It was my Design Delta T that was high.

Thank you for the quick response!

MICHAEL RAIVA, P.Eng., LEED® AP
Mechanical Engineer

Williams Engineering Canada Inc.
T:  778.484.2983    F:  778.484.3901
W:  williamsengineering.com

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-----Original Message-----
From: Bishop, Bill [mailto:bbishop at pathfinder-ea.com] 
Sent: Friday, February 01, 2013 9:43 AM
To: Mike Raiva; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] BDL Boiler Errors

Mike,
Check the settings for the Hot Water Loop. Maybe the dT is incorrect. Also, maybe you are using Secondary Sizing on the loop with very little load attached? See if the problem goes away when you autosize the boiler.
Regards,
Bill

William Bishop, PE, BEMP, LEED AP | Pathfinder Engineers & Architects LLP Senior Energy Engineer
134 South Fitzhugh St.Rochester, NY 14608<tel:14608>
T: (585) 325-6004<tel:5853256004> Ext 114F: (585) 325-6005<tel:5853256005>


-----Original message-----
From: Mike Raiva <mraiva at williamsengineering.com>
To: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Fri, Feb 1, 2013 17:31:01 GMT+00:00
Subject: [Equest-users] BDL Boiler Errors

I am encountering Boiler errors in my sim runs that I cannot make sense of:

HW-DT in Boiler1(HWNatDrft) has Range Checking Violation: Value must be <=70

And here is the offending section in the inp file:

"Boiler1 (HWNatDrft)" = BOILER
   TYPE             = HW-BOILER
   HW-LOOP          = "Hot Water Loop"
   HW-PUMP          = "Boiler1 (HWNatDrft) Pump"
   CAPACITY         = -4.265
   HEAT-INPUT-RATIO = 1.25
   ..

I cannot reconcile those two messages. Please help!