<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt">I have not tried this in eQuest, but from field observations, the typical morning warm-up sequence, especially for Trane rooftop units with factory controls is as follows:<br><br>The OA damper goes to the minimum position.<br>The VAV boxes open fully is so equipped. In any case, somehow or another the HVAC system provides full airflow to the zones during morning warmup or morning cool down.<br>The Supply fan VFD ramps up to 60 Hz.<br>The gas heat in the rooftop unit is enabled to maintain around 85 degrees supply air temperature.<br><br>After the zones meet the zone set-points, the unit returns to cooling mode and the VAV dampers will modulate accordingly.<br><br>I would think in eQuest, the VAV boxes should open fully since the zones are below set-point. I would use a schedule to
define the supply air set-point. I think you can also use a schedule to define the supply fan speed.<br><br>I would be interested to hear how you solve this problem.<br><div> </div>Paul Diglio, CEM, CBCP<br><br><div>87 Fairmont Avenue<br>New Haven, CT 06513<br>203-415-0082</div><br><br><div><span><a target="_blank" href="http://www.pdigliollc.com">www.pdigliollc.com</a></span><div><br></div><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><br><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> Chris Jones <cj@enersave.ca><br><b><span style="font-weight: bold;">To:</span></b> R B <slv3sat@gmail.com>; eQUEST Users List <equest-users@lists.onebuilding.org><br><b><span style="font-weight: bold;">Sent:</span></b> Tue, December 11, 2012 12:37:49 PM<br><b><span
style="font-weight: bold;">Subject:</span></b> Re: [Equest-users] Morning warm-up in eQuest<br></font><br>
<font size="3">Fan schedule, minimum outdoor air schedule and possibly
minimum flow schedule in the zones. There are also the heating and
cooling availability schedules if needed. <br><br>
<br>
At 11:13 AM 11/12/2012, R B wrote:<br>
<blockquote type="cite" class="cite" cite="">Has anyone found a good way to
model morning warm-up in eQuest?<br>
Appreciate any suggestions. Thanks<br>
-Rohini<br>
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>><br>
Christopher Jones, P.Eng.<br>
Suite 1801, 1 Yonge Street<br>
Toronto, ON M5E1W7<br>
Tel. 416-203-7465<br>
Fax. 416-946-1005<br>
email cj@enersave.ca<br>
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