<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size: 12pt;">All,</span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size: 12pt;"> I wanted to clarify Scott Hackel’s comment (from
Volume 19, Issue 16) regarding TRACE’s ability to model VRF
systems…</span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size: 12pt;"> </span></font><i><font size="3" face="Times New Roman"><span style="font-size: 12pt; font-style: italic;">Unfortunately I don't yet have
experience in modeling VRF systems, but I have some info... At the moment, the
EnergyPro package is the only well-established package that the major VRF
manufacturers stand behind as robust. Performance curves from current VRF
equipment are used in that software. <font color="red"><span style="color: red;">You'll likely find it more cumbersome than TRACE, but TRACE's
VRF system has not really been validated to my knowledge (anyone from CDS,
please clarify if I'm mistaken); the VRF reps I've spoken to don't trust
it.</span></font></span></font></i></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size: 12pt; color: red;"> </span><span style="font-size: 12pt;">Since 2002, TRACE has had the capability to model VRF
systems. Through a partnership with Daiken, we developed a cooling-only and
heat pump model based on their products at the time. Due to continued advances
in VRF systems, our original model does not adequately represent these newer
products. Because of this, we have developed a new model, available upon
request, which is in a more accurate biquadratic form and uses the latest Daikin
manufacturer’s data. If anyone has any questions, feel free to call C.D.S.
support at 608-787-3926.</span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size: 12pt;"> Thanks,</span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size: 12pt;"> Mike</span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size: 10pt; font-family: Arial;"> <br></span></font></p>
<p class="MsoAutoSig"><strong><b><font size="2" color="red" face="Arial"><span style="font-size: 10pt; color: red; font-family: Arial;">Michael Patterson,
LEED<sup>®</sup> AP</span></font></b></strong></p>
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