Climate control system has defrosting system with gas circulation path blocking to prevent frosting in user area

摘要

The climate system has an equipment room [3] in which there is a heat exchanger [4], circulating fan [13] and pressure balancing opening [12]. Gas is circulated into the climate controlled room through openings [5] and is returned to the equipment room. During normal operation flow passes through the openings. When defrosting is needed the fan is turned of and blocking valves [6] are activated.