<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 14 (filtered medium)"> <style></style> </head> <body lang="EN-GB" link="blue" vlink="purple"> <div class="WordSection1"> Hi all, <o:p></o:p> <o:p> </o:p> I'll try to keep this short. The problem seems to be with the zone control. Initially I had defined a more complex control logic and so I simplified it to see if this solved the problem but had no joy. <o:p></o:p> <o:p> </o:p> Basically,<o:p></o:p>                - I've changed the calendar days in the model context because I want to implement different control on three days in particular (12/2 - 14/2).<o:p></o:p> <img width="135" height="276" id="Picture_x0020_1" src="cid:image001.jpg@01CFF502.9F86B920"><o:p></o:p>                - In the zone control menu I've defined control for the three days and allowed anything out with this period to free float [See images 2-4, below] <o:p></o:p> <img width="376" height="127" id="Picture_x0020_2" src="cid:image002.jpg@01CFF502.9F86B920"> <img width="414" height="123" id="Picture_x0020_3" src="cid:image003.jpg@01CFF502.9F86B920"> <img width="374" height="124" id="Picture_x0020_4" src="cid:image004.jpg@01CFF502.9F86B920"><o:p></o:p>                - I've run a simulation which covers the three day period. See below the sensible heating from the period 12-2-2014 to 15-2-2014. I cannot understand why there is NO heat injected between 0hr and 1hr on the 13th feb or why there IS heat injected between 0hr and 1hr on the 15th feb.<o:p></o:p> <img width="669" height="391" id="Picture_x0020_5" src="cid:image005.jpg@01CFF502.9F86B920"><o:p></o:p> <o:p> </o:p> What is also interesting is that I changed the control on the 14th feb back to "freefloating." I would've expected the sensible heating graph to show heat being put in from 10am on the 12th (day type - heat on) until 24 hours on the 13th (day type - steady heat). However the heating appears to be on from 10am - midnight on the 12th and then from 1am on the 13th until 1am on the 14th. I've tried different ways of defining the control but can't seem to fix this. <o:p></o:p> <o:p> </o:p> Please let me know if you have any thoughts on this.    <o:p></o:p> <o:p> </o:p> Thanks,<o:p></o:p> <o:p> </o:p> Jordan<o:p></o:p> </div> <HR> <DIV><IMG src="http://www.bre.co.uk/images/resilience14.gif"> <A href="http://www.resilience14.com">www.resilience14.com</A>                 <IMG src="http://www.bre.co.uk/images/Twitter_logo_blue-18x15.gif"> Follow us @BREevents #Resilience14 </DIV> <HR> <DIV>Privileged and confidential information and/or copyright material may be contained in this e-mail. If you are not the intended addressee you may not copy or deliver it to anyone else or use it in any unauthorised manner. To do so is prohibited and may be unlawful. If you have received this e-mail by mistake, please advise the sender immediately by return e-mail and destroy all copies. Thank you. Building Research Establishment Ltd, Registered under number 3319324 in England and Wales. VAT Registration No GB 689 9499 27 <A href="http://www.bre.co.uk">www.bre.co.uk</A> BRE Global Limited, Registered under number 8961297 in England and Wales. <A href="http://www.breglobal.com">www.breglobal.com</A> Building Research Establishment and BRE Global are subsidiaries of the BRE Trust. BRE Trust is a company limited by guarantee, Registered under number 3282856 in England and Wales, and registered as a charity in England (no. 1092193) and in Scotland (no. SC039320). <A href="http://www.bretrust.org.uk">www.bretrust.org.uk</A> Registered Offices: Bucknalls Lane, Garston, Watford, Hertfordshire WD25 9XX - Travelling to BRE: see <A href="http://www.bre.co.uk/directions">www.bre.co.uk/directions</A></DIV> <HR> </body> </html>