Water-Cooled Condensers - HTS

Superior discharge pressure control on remote condenser applications maximizes unit efficiencyby determining optimum condenser fan operation. As many as 6 stages of heat rejection per circuitare provided.MicroTech II controllers have a proactive limit control feature that keeps the unit online whenselected operating parameters start to exceed design settings. For example, if the dischargepressure starts to climb for some reason, rather than shutting down the unit, the control will inhibitcapacity increase to prevent further heat rejection to the condenser. If the pressure continues toclimb, the control will unload the compressor in an attempt to keep the pressure within bounds.Either of these actions will illuminate a signal on the controller and also be recorded in the faultregister. If these two defenses fail, and the pressure still continues to rise, the control will shut thecompressor off at the shut off setpoint.The operator interface is through a 4-line by-20 character/line liquid crystal display and a 6-keykeypad mounted on the unit controller. Its layout is shown below.Figure 4, Keypad and Display in MENU ModeKey to Screen PathwayMenu KeyAir Conditioning