[Trace-users] trane trace

[Julia Beabout]

The temperatures and humidities on the room tab are design conditions for the SPACE conditions.  (i.e. if you want it to be 75F in the space, you can put in 75F on the room tab or on the thermostat template assigned to the room).  These temperatures generally would not coincide with the temperatures on the dedicated OA tab or other system level temperature and humidity set point inputs.
 
The temperatures and humidities on the dedicated OA tab (and other systems level tabs) are the temperatures and humidity conditions of the air leaving the air handling unit or coils.(i.e. if you are designing for a leaving air temperature from the AHU of 55F, you would put in 55F).  The set point limits on the dedicated OA tab only come into play if you are asking the program to optimize your supply air temperature and you want to limit the program's selection range (presumably to insure some level of dehumidification etc).  All this assumes you have coils in your dedicated OA system to precondition the OA before it reaches the main AHU coils.  
 
 
 



----- Original Message ----
From: Jim Pagliaro <Jim at celticenergy.com>
To: trace-users at lists.onebuilding.org
Sent: Thursday, June 19, 2008 10:12:30 AM
Subject: [Trace-users] trane trace


hi,
what is the difference between the design dry bulbs , driftpoint temps in the rooms tab and the cooling/heating design set point and set point limits in the dedicated OA tab?  do these have to coincide with each other?  
 
jim
 
 
 James Pagliaro
 Energy Engineer
 860.882.1515
 860.882.1593 fax
 413.246.7789 mobile
 jim at celticenergy.com
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