[Equest-users] WSHP Capacity Greater Than 90.1 Table 6.8.1

[Paul Diglio]

Nick:
Thanks for the information.  These WSHP are AAON SA-065-S-C units.  I am waiting for the designer to send me the performance information.

So if there is no efficiency rating for this size unit, should the baseline be modeled with the same efficiency as the proposed model?
Regards, Paul Diglio
87 Fairmont Avenue 
New Haven, CT 06513 




      From: Nicholas Caton <Nicholas.Caton at schneider-electric.com>
 To: Paul Diglio <paul.diglio at sbcglobal.net>; "equest-users at onebuilding.org" <equest-users at onebuilding.org> 
 Sent: Monday, September 17, 2018 1:23 PM
 Subject: RE: [Equest-users] WSHP Capacity Greater Than 90.1 Table 6.8.1
   
#yiv7758473049 #yiv7758473049 -- _filtered #yiv7758473049 {font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;} _filtered #yiv7758473049 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv7758473049 {panose-1:2 11 4 0 0 0 0 0 0 0;} _filtered #yiv7758473049 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv7758473049 {panose-1:2 11 4 0 0 0 0 0 0 0;}#yiv7758473049 #yiv7758473049 p.yiv7758473049MsoNormal, #yiv7758473049 li.yiv7758473049MsoNormal, #yiv7758473049 div.yiv7758473049MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:sans-serif;}#yiv7758473049 a:link, #yiv7758473049 span.yiv7758473049MsoHyperlink {color:#0563C1;text-decoration:underline;}#yiv7758473049 a:visited, #yiv7758473049 span.yiv7758473049MsoHyperlinkFollowed {color:#954F72;text-decoration:underline;}#yiv7758473049 p.yiv7758473049msonormal0, #yiv7758473049 li.yiv7758473049msonormal0, #yiv7758473049 div.yiv7758473049msonormal0 {margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:sans-serif;}#yiv7758473049 span.yiv7758473049EmailStyle19 {font-family:sans-serif;color:windowtext;}#yiv7758473049 .yiv7758473049MsoChpDefault {font-size:10.0pt;} _filtered #yiv7758473049 {margin:1.0in 1.0in 1.0in 1.0in;}#yiv7758473049 div.yiv7758473049WordSection1 {}#yiv7758473049 I’d fall back to 6.4.1.1 under the mandatory provisions for the prescriptive compliance path – that’s the section citing the 6.8 series tables for the purpose of establishing prescriptive compliance.  As I’m reading/interpreting, equipment that is not listed categorically within the 6.8-series tables by extension does not need to achieve any minimum performance rating.  There is however some complementary text there you’ll want to review carefully to see if anything applies to your situation.    One extra thought:  Is it possible you’re dealing with a 60-ton WSHPpackage, comprised of a combination of smaller heatpumps?  In that scenario it may be easier using the individual heatpump capacity ratings to find something that fits the prescriptive mold, so to speak.    ~Nick  Nick Caton, P.E., BEMP 
|   Senior Energy Engineer
  Regional Energy Engineering Manager   Energy and Sustainability Services
  Schneider Electric  | D  913.564.6361
M  785.410.3317
F  913.564.6380
E  nicholas.caton at schneider-electric.com  | 15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States  |
|   |

      From: Equest-users <equest-users-bounces at lists.onebuilding.org>On Behalf Of Paul Diglio via Equest-users
Sent: Friday, September 14, 2018 6:57 AM
To: equest-users at onebuilding.org
Subject: [Equest-users] WSHP Capacity Greater Than 90.1 Table 6.8.1    [External email: Use caution with links and attachments]   Hi All:    I am looking at a project based on 90.1-2010.  The capacity of the WSHPs are 60 tons.  90.1-2010 Table 6.8.1B does not list the minimum efficiency of WSHP over 135,000 bBtu/Hr. 

 Any ideas on how to select the minimum efficiency of a similar system for the baseline?

 

 Thank you,   Paul Diglio
87 Fairmont Avenue 
New Haven, CT 06513 

 
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