<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2900.3157" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=296022618-25062009>One item that can cause this error notice on VAV
systems is if you have not selected zone coils. Also, you need to watch your
values for Zone Entering Max Supply Temp, Reheat Delta T, and Hot Deck Max
Leaving Temp to ensure they are reasonable. </SPAN></FONT></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>W. Peter
Anderson<BR><B>Sent:</B> Thursday, June 25, 2009 7:00 AM<BR><B>To:</B>
equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users]
[equest-users]<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>Greetings-</FONT></DIV>
<DIV><FONT face=Arial><FONT size=2>I have set up PVAV systems with hot water
coils. I am getting error messages (See Below) for each of my
systems. On the LS-S reports, heating capacity for unit and zones is zero,
but I do have hot water coils and a boiler loop, etc.</FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2>See below, </FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2>Thansk,</FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2>W. Peter Anderson, P.E<BR>JP
Engineering<BR>41 Mechanic Street<BR>Windsor, CT 06095<BR>Ph:
860/688-5223<BR>Fax: 860/688-5269 </FONT><FONT size=2></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2></FONT></FONT> </DIV>
<DIV>
<P><FONT face=Arial size=2></FONT></P><FONT face=Arial
size=2>**WARNING**********************************************************************</FONT></DIV>
<DIV>
<P><FONT face=Arial size=2>ZONE EL1 NE Perim Zn (G.NE2) </FONT></P>
<P><FONT face=Arial size=2>might have insufficient heating
capability.</FONT></P>
<P><FONT face=Arial size=2>Check that the SYSTEM or ZONE HEATING-CAPACITY plus
this</FONT></P>
<P><FONT face=Arial size=2>ZONEs BASEBOARD-RATING is adequate to maintain the
ZONE</FONT></P>
<P><FONT face=Arial size=2>specified DESIGN-HEAT-T for the calculated peak ZONE
load</FONT></P>
<P><FONT face=Arial size=2>(see LS-A or LS-B for the ZONE peak load.)</FONT></P>
<P><FONT face=Arial size=2>SYSTEM HVAC-1 </FONT></P>
<P><FONT face=Arial size=2>which supplies the above listed ZONE, has a design
heating</FONT></P>
<P><FONT face=Arial size=2>coil exit temperature, HEAT-SET-T,(plus any zone
reheat)</FONT></P>
<P><FONT face=Arial size=2>below its MAX-SUPPLY-T or the ZONE DESIGN-HEAT-T,
which</FONT></P>
<P><FONT face=Arial size=2>might account for the insufficient heating
capability.</FONT></P>
<P><FONT face=Arial
size=2>**WARNING**********************************************************************</FONT></P>
<P><FONT face=Arial size=2>ZONE EL4 East Perim Zn (G.E2) </FONT></P>
<P><FONT face=Arial size=2>might have insufficient heating
capability.</FONT></P>
<P><FONT face=Arial size=2>Check that the SYSTEM or ZONE HEATING-CAPACITY plus
this</FONT></P>
<P><FONT face=Arial size=2>ZONEs BASEBOARD-RATING is adequate to maintain the
ZONE</FONT></P>
<P><FONT face=Arial size=2>specified DESIGN-HEAT-T for the calculated peak ZONE
load</FONT></P>
<P><FONT face=Arial size=2>(see LS-A or LS-B for the ZONE peak load.)</FONT></P>
<P><FONT face=Arial size=2>SYSTEM HVAC-1 </FONT></P>
<P><FONT face=Arial size=2>which supplies the above listed ZONE, has a design
heating</FONT></P>
<P><FONT face=Arial size=2>coil exit temperature, HEAT-SET-T,(plus any zone
reheat)</FONT></P>
<P><FONT face=Arial size=2>below its MAX-SUPPLY-T or the ZONE DESIGN-HEAT-T,
which</FONT></P>
<P><FONT face=Arial size=2>might account for the insufficient heating
capability.</FONT></P>
<P><FONT face=Arial
size=2>**WARNING**********************************************************************</FONT></P>
<P><FONT face=Arial size=2>PREHEAT/HEATING-CAPACITY in SYSTEM HVAC-1 </FONT></P>
<P><FONT face=Arial size=2>is too low to provide the requested supply
temperature for</FONT></P>
<P><FONT face=Arial size=2>the calculated mixed air temperature using total ZONE
loads</FONT></P>
<P><FONT face=Arial size=2>(on LS-A/B) and SYSTEM design parameters, plus
outside air</FONT></P>
<P><FONT face=Arial size=2>conditions (on LS-C), and specified capacities &
air flows.</FONT></P>
<P><FONT face=Arial size=2>Requested temperature is 55.00 calculated is
-3.14</FONT></P>
<P><FONT face=Arial size=2>Check HEATING-CAPACITY, HEAT-SET-T, PRE-HEAT-T,
MAX-SUPPLY-T,</FONT></P>
<P><FONT face=Arial size=2>DESIGN-HEAT-T, and ZONE loads for
consistency.</FONT></P></DIV>
<DIV> </DIV></BODY></HTML>