<html><head></head><body><div class="yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:16px;"><div dir="ltr" data-setdir="false">Dear Users,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I'm using type 928 (fan coils) to heat 13 zones of a building. </div><div dir="ltr" data-setdir="false">For 10 of the zones, the heat transfer takes place from the hot water stream to the air (as it should be), the temperature of the water is reduce with 3oC and a significant thermal energy is delivered to the air. </div><div dir="ltr" data-setdir="false">There are some problems with the 3 others zones: </div><div dir="ltr" data-setdir="false">- for one of them the heat transfer rate is 0 and for two of them the heat transfer takes place in the opposite way (the water is heated instead of being cooled)</div><div dir="ltr" data-setdir="false">- the air temperature of the zones is used as input (return air temperature) for the type 928; even though the temperature in the rooms is less than 30oC and the inlet water temperature is 63oC, it seems that for this 3 zones the outlet air temperature is grater than 65oC</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Please give some advice regarding this problem!</div><div dir="ltr" data-setdir="false">Thank you!</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Gabriela</div></div></body></html>