<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body dir="auto" style="zoom: 0%;"><div dir="auto">You have a couple of options regarding system type. There is a HP heat pump system type that is zonal meaning you would not need a system per zone. However it has some keyword limitations including no ventilation heat recovery. So to work around model heat recovery you will scale back the OA volume by the heat recovery effectiveness. ( Not terrific. )<br><br></div>
<div dir="auto">I recommend creating a system per zone and using the PVVT system type. PSZ would also work. PVVT enables a few more keywords. Both allow ventilation heat recovery to be directly modelled.<br><br></div>
<div dir="auto">Whichever system you choose, set your heating to Heat Pump. The keywords on the heating-supplementary tab will be enabled where you can add the OAT below which your electric resistance heating is enabled (default 40F) and the OAT below which the heat pump doesn't run. <br></div>
<div class="gmail_quote" >On Sep 4, 2023, at 12:38 AM, fraij via Equest-users <<a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div dir="auto">Hello,</div><div dir="auto"><br></div><div dir="auto">I have a model in eQUEST that has FCU as the HVAC system with heat pump chiller for a residential building. </div><div dir="auto"><br></div><div dir="auto">Now I need to change this HVAC system to DX heat pump and this heat pump is small and self contained in which it can be installed inside the room and will have inlet and out let ducts for the condenser air to the outside (I.e. without outdoor unit). This unit will have also heat recovery option and supplementary electric resistance heater.</div><div dir="auto"><br></div><div dir="auto">My question is, what is the best HVAC system in eQUEST that I can use for this heat pump and in the same time enable the heat recovery option tab and the supplementary heater option tab? And also, do I need to assign a new HVAC system for each zone or I can assign one HVAC system for a group of zones similar to the FCU system?</div><div dir="auto"><br></div><div dir="auto">Thank you very much for the help.</div><div dir="auto"><br></div><div dir="auto">Regards</div><div dir="auto"><br></div><div dir="auto">Ahmad</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><pre class="blue"><hr><br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG<br></pre></blockquote></div></body></html>