<div>Hi Elliott,</div>
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<div>I took a quick look at your model files. The error is correct, you do not have a heat rejection piece of equipment indicated in your Plants Tab. This will cause an error.</div>
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<div>Where you are indicating on the air-side taht you have a water-cooled condenser for your PSZ systems, we need to understand what that input is assuming in DOE2--from the help file for this topic I found the following:</div>
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<h5><font color="#999999">CONDENSER-TYPE</font></h5>
<p class="MsoBodyText"><font color="#999999">Takes a code-word that specifies the type of condenser in packaged systems with direct-expansion cooling (and optional heating.) Note that the program changes the default performance data (such as EIR) when you change the condenser type; if the unit being modeled is atypical nput data representative of the unit should be used to replace the default performance parameters.</font></p>
<p class="CodeWord"><font color="#999999">AIR-COOLED The condenser is air cooled.</font></p>
<p class="CodeWord"><font style="BACKGROUND-COLOR: #ffcc66" color="#999999">WATER-COOLED The condenser is water cooled. You must attach the condenser to a CIRCULATION-LOOP of TYPE = CW or WLHP via the CW-LOOP keyword. For PSZ, PVAVS and PVVT, use of this value indicates that a water-to-air heat pump (WLHP) is to be modeled.</font></p>
<p class="CodeWord"><font color="#999999">EVAP-PRECOOLED The air-cooled condenser on a RESYS2, PSZ, PMZS, PVAVS, PTAC, PIU or PVVT system includes an evaporative precooler. The precooler is controlled by a time and/or temperature controller that decides if the unit should operate (see EVAP-PCC-SCH, EVAP-PCC-EFF, and EVAP-PCC-ELEC). When this unit doesn't operate, the condenser returns to CONDENSER-TYPE = AIR-COOLED. The evaporative precooler is only active during cooling mode. If no operation schedule is specified using EVAP-PCC-SCH, a default operation is assumed that provides for cooling mode operation whenever the outside dry-bulb temperature is more than 2F (1.1K) above the value of COOL-FT-MIN.</font></p>
<p class="CodeWord"><font color="#999999">EVAP-COOLED The condenser on a RESYS2, PSZ, PMZS, PVAVS, PTAC, PIU or PVVT system is evaporative. Note that this is different than an EVAP-PRECOOLED condenser, which is an air-cooled condenser with evaporative precooling media. <br>
<br>Since an evaporative condenser responds to the outdoor wetbulb temperature, not the outdoor drybulb, the nominal capacity and power consumption, together with off-rated performance curves, must be defined relative to the outdoor wetbulb. The ARI rating point is 95°F outdoor drybulb and 75°F outdoor wetbulb. Therefore, the COOLING-CAPACITY and COOLING-EIR must be specified relative to a 75°F outdoor wetbulb (and 67°F indoor wetbulb). The performance curves COOL-CAP-FT, COOL-SENS-FT and COOL-EIR-FT must all be normalized to a 75°F outdoor wetbulb. The program includes generic default curves for these functions. Normally, the COOLING-EIR and COOL-EIR-FT should include the compressor power as well as the condenser fan and spray pump.</font></p>
<div>Is this what you were intending to model with your specified input? If so, then you will need to add a heat rejection equipment to the loop. See attached screen shot for how to add a water cooled heat rejction device.</div>
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<div>To get the window to appear (as in the screen shot) you want to RIGHT click on your mouse at the top highlighted item on your project navigation tree.</div>
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<div>Pasha<br><br></div>
<div class="gmail_quote">On Wed, Nov 3, 2010 at 12:47 PM, Elliott Knotts <span dir="ltr"><<a href="mailto:eknotts@wt.net">eknotts@wt.net</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div bgcolor="#ffffff">
<div><font size="2" face="Arial">I have a building designed in eQUEST 3-64 with a Water-Source HP System, when I run the Compliance Analysis, the system generates a LEEDS-based Bldg but also generates a "CW-LOOP = *UNDEFINED*" error for each of the four systems. After defining the Condenser Water Loop from the library as "DEFAULT_CW" for each system, I get the following error: <font size="1" face="Courier New"><font size="1" face="Courier New"></font></font></font></div>
<p>***ERROR***********************************************************************</p>
<p>Loop: DEFAULT-CW has no attached primary cooling equipment.</p>
<div>I have tried creating a Circulation Loop with a Pump, but I still get the no attached cooling equipment error. What am I doing wrong or How do I attach cooling equipment. I am about to go bald pulling my hair out.</div>
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<div>I have attached the *.inp and *.pd2 files: </div>
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<div>Any and all advice will be appreciated.</div>
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<div>Elliott</div></font></div><br>_______________________________________________<br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>
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