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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jeff,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I would check the value of “Reheat Delta T” under
Heating > Coil Cap/Control on your system. This value sets a limit on
the change in supply air temperature as it passes through the terminal unit
reheat coils. The default of 30 F often causes this warning for me.
For example if your air handler discharge temperature is 55 F and your desired
zone supply temperature is 100 F, your “Reheat Delta T” would
need to be 45 to allow this to happen in the simulation. The default of
30 would only allow 85 F zone supply air temperature.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#0070C0'><o:p> </o:p></span></p>
<p class=MsoNormal><i><span style='font-family:"Calibri","sans-serif";
color:#1F497D'>Jay Keazer, EI<o:p></o:p></span></i></p>
<p class=MsoNormal><i><span style='font-family:"Calibri","sans-serif";
color:#1F497D'>Energy Services Division<o:p></o:p></span></i></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img width=128 height=38 id="Picture_x0020_1"
src="cid:image001.png@01C8BFD0.19E4FFC0" alt="TME logo"><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>2039 Green Acres Rd.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Fayetteville, AR 72703<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Phone: (479) 521-8634<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Fax: (479) 521-1014<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="www.tmecorp.com"><span style='color:blue'>www.tmecorp.com</span></a><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Jeff
Schorsch<br>
<b>Sent:</b> Thursday, May 08, 2008 1:12 PM<br>
<b>To:</b> Sheila<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Spam:Re: [Equest-users] Heating problems....<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thank
you for responding. When I do a simulation it aborts the run, then I cant see
the SS-F / SS-R reports.</span><o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message ----- <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'> <a
href="mailto:sheila@energyopportunities.com"
title="sheila@energyopportunities.com">Sheila</a> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:jschorsch@hmg-associates.com" title="jschorsch@hmg-associates.com">Jeff
Schorsch</a> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Thursday, May 08,
2008 12:28 PM<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> RE: [Equest-users]
Heating problems....<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Hi Jeff,</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>How many hours of unmet load do you have for zones served by these
units? See reports SS-F and/or SS-R. I often have these warnings
even when all my zones are conditioning properly. If that is the case,
ignore the warnings and don't waste your time trying to fix them. The
nice thing about SS-F is that it will tell you how cold the zones are getting
and the months unmet load hours occur.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>If you have a lot of unmet load hours, I would start checking to
see if my zone thermostat schedules, heating availability schedule, and fan
schedules match. If the hours of unmet load occur during the summer, you
have simultaneous heating and cooling. Try setting the heating thermostat
to 55 during the summer months to eliminate the call for heating.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Good luck.</span><o:p></o:p></p>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;color:green'>Sheila Sagerer</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:green'>Energy Engineer,
EIT, LEED AP</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:green'>Energy
Opportunities, Inc, a 7group company</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:green'>Phone:
717-880-9069</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:green'>www.sevengroup.com</span><o:p></o:p></p>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Jeff
Schorsch<br>
<b>Sent:</b> Thursday, May 08, 2008 12:40 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Heating problems....</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>This
is still my first time creating my simulation and I thought I was on the right
track...</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
have a 100% OA unit with a preheat coil and chilled water cooling coils to
maintain a 52 deg off the coil. The zones are </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>handled
by singe duct, straight VAV terminal units with hot water reheat coils. I have
set all</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>the
zone set points to 72 degrees and I am getting a message that reads as shown
below. I have </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>inputted
the heating capacity for the preheat coil and the capacity for heating in the
zonal VAV terminal unit.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Just
to see what would happen I grossly oversized the VAV heating capacity to see if
the error would be fixed,</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>it
did not. I checked the LS-B space peak loads and it shows that the zone heating
capacity required is only 25% of what I am inputting. Please help, I have no
clue what I am doing wrong.</span><o:p></o:p></p>
</div>
<div>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>**WARNING**********************************************************************<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>ZONE TU1-6 <o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>might have
insufficient heating capability.<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>Check that the
SYSTEM or ZONE HEATING-CAPACITY plus this<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>ZONEs BASEBOARD-RATING
is adequate to maintain the ZONE<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>specified
DESIGN-HEAT-T for the calculated peak ZONE load<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>(see LS-A or LS-B
for the ZONE peak load.)<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>SYSTEM AHU-1 <o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>which supplies the
above listed ZONE, has a design heating<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>coil exit
temperature, HEAT-SET-T,(plus any zone reheat)<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>below its
MAX-SUPPLY-T or the ZONE DESIGN-HEAT-T, which<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'>might account for
the insufficient heating capability.<o:p></o:p></span></p>
<p><span style='font-size:7.5pt;font-family:"Courier New"'> <o:p></o:p></span></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks!!!</span><span
style='font-size:7.5pt;font-family:"Courier New"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>JEFF
SCHORSCH E.I.T.<br>
HMG & ASSOCIATES<br>
70 N.E. LOOP 410 SUITE 1070<br>
PH.(210)349-0800<br>
FAX.(210)349-2736</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="mailto:jschorsch@hmg-associates.com">jschorsch@hmg-associates.com</a></span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="http://www.hmg-associates.com">www.hmg-associates.com</a></span><o:p></o:p></p>
</div>
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