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Talib,<br>
Type2 models a differential temperature controller. It's control
decision is based on the difference between two values no matter
what the magnitudes of those values are. A typical thermostat makes
a control decision by comparing the magnitude of two values (not
just the difference). While you can use a type2 to model a
thermostat, I think it would be easier in your case to use Type108
(Controllers: 5-Stage Room thermostat.)<br>
Regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 12/7/2012 05:36, Talib Ahmadu wrote:<br>
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<div>Dear all, </div>
<div>I want to create a control for a multizone building
cooling model using type 2d. I have used an absorption
chiller, type 107. I want the chiller on when the
temperature in the zones exceed 24C and off when the
temperature falls below 19C. These are my inputs.</div>
<div>Upper input value= Tzone</div>
<div>Lower input value=0</div>
<div>Upper dead band=24</div>
<div>Lower bead band=19</div>
<div>I tried this for a single zone but it didnt seem to
work well. I have 9 zones in the building, my problem is
how to connect all zone temperatures to Upper input
value.</div>
<div>Please i need to know if this strategy is correct and
how i can connect all zone temperatures. Suggestions
will be appreciated. Thanks</div>
<div>Talib.</div>
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<pre class="moz-signature" cols="72">--
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David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
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