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Instead of setting SYSTEM:COOLING-CAPACITY, set
ZONE:COOLING-CAPACITY with this expression and it should work. SPACE
is a directly referenced command from the ZONE command, not the
SYSTEM command. Do not input anything for SYSTEM:COOLING-CAPACITY.
PTAC is a zonal system. Each zone underneath a SYSTEM of TYPE = PTAC
gets its own system. All capacity inputs at the SYSTEM command for
PTAC only serve as defaults for the individual zonal systems. So if
your capacity varies by each individual PTAC, which this expression
implies, then COOLING-CAPACITY should be input at the ZONE.<br>
<pre class="moz-signature" cols="72">Kevin</pre>
<br>
On 5/2/2012 1:12 PM, Vipul Babriya wrote:
<blockquote
cite="mid:8CEF6B701BFD48A-960-233E6@webmail-m064.sysops.aol.com"
type="cite"><font color="black" face="Arial, Helvetica,
sans-serif" size="2"><font color="black" face="Arial, Helvetica,
sans-serif" size="2">Hello All,<br>
<br>
I am trying to set up user expression for defining the cooling
capacity @ system level based on total cooling SF, total
cooling capacity and local space area. i have PTAC system and
it is system per zone. <br>
For Example, <br>
Total Project Cooling cap = X<br>
Total Project Area = Y<br>
<br>
Cooling capacity for each system = #pa("</font><font
color="black" face="Arial, Helvetica, sans-serif" size="2">Total
Project Cooling cap")/</font><font color="black" face="Arial,
Helvetica, sans-serif" size="2"> #pa("</font><font
color="black" face="Arial, Helvetica, sans-serif" size="2">Total
Project Area</font><font color="black" face="Arial, Helvetica,
sans-serif" size="2">")* <span style="background-color:
chartreuse;">#LR("SPACE","AREA") <span
style="background-color: white;"><br>
<br>
Above expression does not work since i am referencing
local space @ system level.<br>
<br>
Do anybody have any idea how to recall local space area @
system level.<br>
<br>
Thanks in advance.<br>
<br>
Vipul<br>
</span><font bgcolor="white"><font color="white"><br>
<br>
<br>
<br>
</font></font></span></font></font>
<br>
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