YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

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SECTION 8 - MICROPANEL General 98 UNIT DATA KEY UNIT DATA KEY The UNIT DATA key provides the user with displays of unit temperatures, and unit related data. Displays can be selected by repeatedly pressing the UNIT DATA key or the▲ or ▼ Arrow Keys. Unit Data Key Operation The first key press displays Evaporator Leaving and Return Chilled <strong>Liquid</strong> Temperatures. UNIT CHILLED LIQUID LEAVING = XXX.X °F ENTERING = XXX.X °F The next key press of the UNIT DATA key or the ▼ (ARROW) key displays the ambient air temperature. UNIT OUTSIDE AMBIENT AIR TEMP = XXX.X °F The next key press will display the time remaining on the load and unload timers. UNIT LOAD TIMER = XXX SEC UNLOAD TIMER = XXX SEC The next key press displays the error in temperature between the actual leaving chilled liquid temperature and the setpoint temperature. The display also shows the rate of change of the chilled liquid temperature. LD10605 UNIT TEMP ERROR = XXX.X °F RATE = XXX.X °F/M FORM 201.28-NM1.1 ISSUE DATE: 8/29/2012 The next key press displays the system designated as the lead system and the Flow Switch status (ON or OFF). UNIT LEAD SYSTEM NUMBER = X FLOW SWITCH = XXX The next key press displays the status of the evaporator pump and heater, where XXX is either ON or OFF. UNIT EVAP PUMP RUN = XXX EVAP HEATER = XXX The next key press displays the status of Active Remote Control. UNIT ACTIVE REMOTE CONTR0L = XXXXXX TYPE: RCC ISN CURR TEMP SOUND XXXXX is either ACTIVE or NONE. If no remote keys are active, the items on the second line are all blanked out. Any remote items that are active will be displayed, while the inactive items will be blanked out. JOHNSON CONTROLS
FORM 201.28-NM1.1 ISSUE DATE: 8/29/2012 The types of remote control are listed as follows: • NONE - No remote control is actively controlling the chiller; however, remote monitoring by a remote device may still be active. • RCC - A Remote Control Center is providing remote control. The chiller is in remote mode. • ISN - YorkTalk via ISN. The chiller in remote mode. • CURR - Remote Current Limiting is enabled. • TEMP - Remote Temperature Reset is enabled. • SOUND - Remote Sound Limiting is enabled. SECTION 8 - MICROPANEL The next key press displays the sound limit values as set under the PROGRAM key by the Local, ISN, and the Remote Sound Limit Inputs. Any sound limits that are inactive will display XXX instead of a numeric value. UNIT SOUND LIMIT LOCAL = XXX % ISN = XXX REMOTE = XXX % JOHNSON CONTROLS 99 8
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AIR-COOLED SCREW LIQUID CHILLERS IN
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YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

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