<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.6000.16890" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=796050318-26082009>
<P class=CodeWord><SPAN class=796050318-26082009><FONT face=Arial size=2>This is
a question pertaining to code word COMPRESSOR-TYPE. I am modeling a
Packaged Var Vol system with modulating compressors. For some reason the
drop down box for Compressor Type under Unitary power for Cooling has been
grayed out. I have replicated the help menu for this code word below and
it seems like this option should be available for PVAVS system types. Thank
you in advance!</P>
<H5>COMPRESSOR-TYPE</H5>
<P class=MsoBodyText>Takes a code-word that specifies the compressor speed
control mechanism; this keyword is intended for use in modeling a packaged
direct expansion heat pump or air-conditioning that incorporated variable speed
compressor control: It is suggested that the SYSTEM:AIR/TEMP-CONTROL
keyword be used for systems which incorporate multiple steps or stages of
capacity rather than this keyword/codeword combination.</P></FONT></SPAN>
<P class=CodeWord><FONT face=Arial size=2>VARIABLE-SPEED<SPAN
class=796050318-26082009> - </SPAN>specifies that the compressor can vary its
speed to exactly match the capacity required. This is applicable to RESVVT, PSZ,
PVAVS and PVVT systems.</FONT></P></SPAN></DIV>
<DIV> </DIV>
<DIV align=left><IMG
alt="
Linda Lam, LEED® AP
WSP Flack + Kurtz
405 Howard Street, Suite 500
San Francisco, CA 94105
Direct: 415.402.5813
Main Tel: 415.398.3833
Fax: 415.433.5311
website: http://www.wspfk.com
vCard: http://vcards.wspfk.com/vcardloader.php?filename=flackkurtz-linda-lam-wspfk-com-1227040073.vcf
image: "
src="http://vcards.wspfk.com/usercard.php?filename=flackkurtz-linda-lam-wspfk-com-1227040073.png"
align=absMiddle useMap=#flackkurtz-linda-lam-wspfk-com-1227040073 border=0
nosend="1">
<STYLE>
a {color: 1D88F6;}
</STYLE>
<MAP name=flackkurtz-linda-lam-wspfk-com-1227040073><AREA shape=RECT
target=_blank coords=401,9,458,31 href="http://www.wspfk.com"><AREA shape=RECT
target=_blank coords=458,9,503,31
href="http://vcards.wspfk.com/vcardloader.php?filename=flackkurtz-linda-lam-wspfk-com-1227040073.vcf"><AREA
shape=RECT target=_blank coords=503,9,536,31
href="http://maps.google.com/maps?f=q&hl=en&geocode=&q=405+Howard+Street,+San+Francisco,+CA+94105&sll=40.754409,-73.988972&sspn=0.019083,0.032616&ie=UTF8&ll=37.79032,-122.395163&spn=0.019908,0.032616&z=15&iwloc=addr"><AREA
shape=RECT target=_blank coords=536,9,578,31
href="mailto:linda.lam@wspfk.com"><AREA shape=RECT target=_blank
coords=0,31,591,161 href="http://www.wspfk.com"></MAP></DIV>
<DIV> </DIV></BODY></HTML>