Daikin RDT-135c Installation And Maintenance Manual

Contents

Daikin RDT-135c Installation And Maintenance Manual Manual pdf 111 page image

IM 738-2 109Final Control Settings: Maintaining Control Parameter RecordsFinal Control SettingsWhen all start-up procedures are completed, set the controlsand program the MicroTech II controller for normal operation.Use the following list as a guide; some items may not apply toyour unit. For more detail, see IM696 and OM137 or OM138.1 Turn system switch S1 to ON and S7 to AUTO.2 Turn gas furnace switch S3 to AUTO or turn electric heatswitch HS1 to ON.3 Turn compressor control switches CS1 and CS2 to ON.4 Turn liquid line solenoid switches PS1 and PS2 to ON.5 Set the electromechanical (Honeywell H205) enthalpycontrol (OAE) as required (A, B, C, or D). Set thesolid-state (Honeywell H705/C7400) enthalpy control(OAE/ RAE) past D.6 Set the heating and cooling parameters as required fornormal unit operation:a Temperature \ Zone Cooling \b Temperature \ Zone Heating \c Temperature \ Discharge Cooling \d Temperature \ Discharge Heating \7 Set the low ambient compressor lockout setpoint asrequired in menu, Temperature \ Zone Cooling \ OAT ClgLock=. Do not set it below 50°F (10°C) unless the unit isequipped for low ambient operation.8 Set the high ambient heat lockout temperature setpoint,Temperature \ Zone Heating \ OAT Htg Lock= as required.9 Set the alarm limits as required inSetup/Service \ Alarm Limits \.10 Set the compressor lead/lag function as desired usingkeypad menu Setup/Service \ Compressor Setup \ LeadCircuit= and Setup/Service \ Compressor Setup \Comp Ctrl=. Refer to “Compressor Staging” in BulletinsOM137 and OM138.Note: If the unit has hot gas bypass on circuit #1 only, leadcircuit must always be #1.11 Set the duct static pressure control parameters as requiredin keypad menu Airflow \ Duct Pressure \.12 Set the building static pressure control parameters asrequired in keypad menu Airflow \ Bldg Pressure \.13 Set the fan tracking parameters as required in keypadmenus Setup/Service \ Fan Tracking Setup \ and Setup/Service \ Fan Balance \.14 Set the economizer control parameters as required inkeypad menu Temperature \ OA Damper \.15 Set the control timers as required in keypad menuSetup/Service \ Timer Settings \.16 Set the date and time in keypad menuSetup/Service \ Time/Date \.17 Set the operating schedule as required using keypad menus.Note: When used with a Building Automation System,these settings may need to be kept at the default of noschedule:a Schedules \ Daily Schedule \b Schedules \ Holiday Schedule \18 Temporarily disconnect static pressure sensor tubing fromsensors SPS1 and SPS2 (if installed) and place the unit intothe calibrate mode by using the keypad menu Setup/Service\ Unit Configuration \ Calibrate Mode= and changing thevalue from NO to YES. The calibrate mode automaticallyzeroes all static pressure sensors and calibrates any actuatorfeedback pots connected to the MicroTech II controller.When the calibration is finished, the keypad menu SystemSummary \ System \ Unit Status= changes from Calib to OffMan.19 To restart the unit, reconnect static pressure tubing andchange keypad menu System Summary \ System \ CtrlMode= from OFF to AUTO.Maintaining Control Parameter RecordsDaikin recommends that the MicroTech II controller’ssetpoints and parameters be recorded and saved for futurereference. If the Microprocessor Control Board requiresreplacement, this record facilitates entering the unit’s properdata. The following tables display all the setpoints, monitoringpoints, and program variables offered by MicroTech II plus thekeypad road map used to find each parameter.A number of menus and menu items that appear on the unitkeypad/display are conditional and may not apply to a specificunit, depending on the unit software configuration. The unitsoftware configuration is defined by a “SoftwareConfiguration Code” shown on a label located near thekeypad/display. The Software Configuration Code also can bedisplayed via the six menu items in the Config Code menu onthe unit keypad/display. Refer to “Main Control Board (MCB)Configuration” in OM 137 or OM 138.The shaded menus and menu items in Figure 113 on page 110are conditional. A conditional menu or menu item includes areference in Figure 113 to the position in the SoftwareConfiguration Code upon which its applicability depends. Forexample, the Duct Pressure menu in Figure 113 includes anotation [14=1 or 2]. This notation means that the Duct Pressuremenu (and all its menu items) applies to the specific unit only ifposition 14 in its Software Configuration Code is a 1 or a 2.Otherwise, the menu or menu item is not applicable to the unitand does not affect its operation.The items in Figure 113 include the factory-set value for alladjustable items. Keep a record of any changes made to anyof these items.