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<p class="MsoNormal">In my idea the thermostat controls the zone temperature of the type690 and gives the control signal to the heat pump.<br>
I try to attach the image again.<br>
<br>
<br>
<img width="458" height="349" style="width:4.7666in;height:3.6333in" id="Immagine_x0020_3" src="cid:image003.png@01D881DE.E3AD5520"></p>
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<p class="MsoNormal" style="border:none;padding:0cm"><b>Da: </b><a href="mailto:thornton@tess-inc.com">thornton@tess-inc.com</a><br>
<b>Inviato: </b>giovedì 16 giugno 2022 23:53<br>
<b>A: </b><a href="mailto:trnsys-users@lists.onebuilding.org">TRNSYS users mailing list at OneBuilding.org</a><br>
<b>Cc: </b><a href="mailto:jacopovalente@live.it">Jacopo Valente</a><br>
<b>Oggetto: </b>Re: [TRNSYS-users] WSHP - heat pump with radiant panel</p>
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<p class="MsoNormal">On 2022-06-16 16:19, Jacopo Valente via TRNSYS-users wrote:<br>
<br>
> Equa 3 is the input for the lumped capacitance and this input is the<br>
> sum between the loads and the “top surface heat transfer” of<br>
> radiant floor. However i don’t understand why my system doesn’t<br>
> work: it seams the pump doesn’t exchange and the output temperature<br>
> remains constant.<br>
<br>
Without seeing your project my first guess is that you don't have <br>
anything turning the pumps on; the thermostat is only connected to the <br>
heat pump.<br>
<br>
Beyond that, PLEASE add some pipes between the components and make sure <br>
you are operating at reasonable time steps - 5 minutes or so.<br>
<br>
Jeff<br>
<br>
----<br>
Jeff Thornton<br>
President<br>
Thermal Energy System Specialists (TESS)<br>
3 N. Pinckney Street - Suite 202<br>
Madison WI 53703<br>
(608) 274-2577<br>
<a href="http://www.tess-inc.com">www.tess-inc.com</a><o:p></o:p></p>
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