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Enyuan,<br>
The "more" button next to that input is a good place to start for
questions like this. In this case, the value determines the fraction
of the total air flow through the heat pump that will be outdoor air
and the fraction that will be return air. If you set the value to 1
then no return air will be used and the heat pump will supply only
conditioned outdoor air to the space.<br>
regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 11/21/2014 16:36, Enyuan Hu wrote:<br>
</div>
<blockquote
cite="mid:CAJud35PBihimc5DXPnvLa-=SOkzAnwa2C0VXGPk3U88SXV4_wA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#3333ff">Dear
David,</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#3333ff"><br>
</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#3333ff">I
do still have one more question, though. What's the guideline
for setting up the "outdoor air damper position" parameter? I
tried 0, 0.5 and 1. They produced very different results. Is
there some empirical number for this parameter? Thanks!</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#3333ff"><br>
</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#3333ff">best
regards,</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#3333ff">Enyuan </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Nov 21, 2014 at 4:04 PM,
Bearcharge <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:bearcharge@gmail.com" target="_blank">bearcharge@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Dear
David,<br>
<br>
Many thanks for the answer! They're very clear.<br>
<br>
best regards,<br>
Enyuan<br>
<br>
Sent from my iPhone<br>
<div>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
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