<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"\6279\6CE8\6846\6587\672C Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:9.0pt;
font-family:SimSun;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.Char
{mso-style-name:"\6279\6CE8\6846\6587\672C Char";
mso-style-priority:99;
mso-style-link:\6279\6CE8\6846\6587\672C;
font-family:SimSun;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi, everyone:<o:p></o:p></p><p class=MsoNormal>What’s the default equipment control when a loop with more than 1 plant?<o:p></o:p></p><p class=MsoNormal>At first I think the default should be” chiller1a- sequence 1, chiller 2a-sequence2, …” or all the chillers with the same sequence 1.<o:p></o:p></p><p class=MsoNormal>But my experiment shows it different than my think . <o:p></o:p></p><p class=MsoNormal> I make a system with 3 chiller and make a calculation under different control way.<o:p></o:p></p><p class=MsoNormal>The result run hour shows below:<o:p></o:p></p><table class=MsoTableColorfulGridAccent2 border=1 cellspacing=0 cellpadding=0 style='border-collapse:collapse;border:none'><tr><td width=148 valign=top style='width:110.7pt;border:solid windowtext 1.0pt;background:#E5B8B7;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><b><span style='color:#C7EDCC'>Equipment control<o:p></o:p></span></b></p></td><td width=148 valign=top style='width:110.7pt;border:solid windowtext 1.0pt;border-left:none;background:#E5B8B7;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><b><span style='color:black'>Chiller 1a<o:p></o:p></span></b></p></td><td width=148 valign=top style='width:110.7pt;border:solid windowtext 1.0pt;border-left:none;background:#E5B8B7;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><b><span style='color:black'>Chiller 1b<o:p></o:p></span></b></p></td><td width=148 valign=top style='width:110.7pt;border:solid windowtext 1.0pt;border-left:none;background:#E5B8B7;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><b><span style='color:black'>Chiller 1c<o:p></o:p></span></b></p></td></tr><tr><td width=148 valign=top style='width:110.7pt;border:solid windowtext 1.0pt;border-top:none;background:#943634;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='color:#C7EDCC'>None</span><o:p></o:p></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#DFA7A6;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal>2126<o:p></o:p></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#DFA7A6;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal>624<o:p></o:p></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#DFA7A6;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal>607<o:p></o:p></p></td></tr><tr><td width=148 valign=top style='width:110.7pt;border:solid windowtext 1.0pt;border-top:none;background:#943634;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='color:#C7EDCC'>Chiller1~3 to seq 1~3<o:p></o:p></span></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#F2DBDB;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='color:black'>2750<o:p></o:p></span></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#F2DBDB;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='color:black'>607<o:p></o:p></span></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#F2DBDB;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='color:black'>0<o:p></o:p></span></p></td></tr><tr style='height:3.5pt'><td width=148 valign=top style='width:110.7pt;border:solid windowtext 1.0pt;border-top:none;background:#943634;padding:0cm 5.4pt 0cm 5.4pt;height:3.5pt'><p class=MsoNormal><span style='color:#C7EDCC'>All Chillers seq 1<o:p></o:p></span></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#DFA7A6;padding:0cm 5.4pt 0cm 5.4pt;height:3.5pt'><p class=MsoNormal><span style='color:black'>2750<o:p></o:p></span></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#DFA7A6;padding:0cm 5.4pt 0cm 5.4pt;height:3.5pt'><p class=MsoNormal><span style='color:black'>2750<o:p></o:p></span></p></td><td width=148 valign=top style='width:110.7pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;background:#DFA7A6;padding:0cm 5.4pt 0cm 5.4pt;height:3.5pt'><p class=MsoNormal><span style='color:black'>2750<o:p></o:p></span></p></td></tr></table><p class=MsoNormal>So I’m puzzled with how should the software control more than 1 plant when there is no equipment control set?<o:p></o:p></p><p class=MsoNormal><img width=420 height=270 id="_x56fe__x7247__x0020_1" src="cid:image001.png@01CD0818.43B512B0"><o:p></o:p></p><p class=MsoNormal>Any suggestion should be appreciated.<o:p></o:p></p><p class=MsoNormal>Thank you very much. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Joey<o:p></o:p></p></div></body></html>