Carrier AQUAFORCE 30XA080-500 Controls, Start-up, Operation, Service And Troubleshooting Instructions

Also see for AQUAFORCE 30XA080: Installation instructions Controls, start-up, operation, service and troubleshooting instructions Installation instructions Product data

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Carrier AQUAFORCE 30XA080-500 Controls, Start-up, Operation, Service And Troubleshooting Instructions Manual pdf 27 page image

27The Occupancy Supervisory Part table name (OCC1P01S)number must be changed to configure the unit to broadcast aGlobal Time Schedule. The Schedule Number can be set from65 to 99 (OCC1P65S to OCC1P99S). When OCC1PxxS is setto a value greater than 64, an occupancy flag is broadcast overthe CCN every time it transitions from occupied to unoccupiedor vice-versa. By configuring their appropriate Time Scheduledecisions to the same number, other devices on the network canfollow this same schedule. The Enable/Off/Remote Contactmust be in the Enable position or the Remote Contact positionwith the contacts closed for the unit to operate. The Unit RunStatus (STAT) will indicate the current status of the machine(OFF, RUNNING, STOPPING or DELAY), depending on theschedule. The unit Occupied status (OCC) will indicate thecurrent occupied schedule according to the schedule, either NOor YES. The Status Unit Control Type (CTRL) will be LOCALOFF when the switch is Off. The Status Unit Control Type willbe CCN when the Enable/Off/Remote Contact switch input isOn.CCN Control — With CCN Operating Type control, the ma-chine operates under CCN control as long as the Enable/Off/Remote Contact Switch is in the Enable or Remote Contactposition (external contacts closed.) To operate under thisOperating Control, OPER must be set to CCN CONTROL. Anexternal CCN device, such as Chillervisor, controls the On/Offstate of the machine. When controlled by a Chillervisor, it isrecommended that the Auto Start When SM Lost (AU.SM) beset to Yes.Careful evaluation of Chilled Water Plant control should bereviewed. In the event Local Control is established, be sure thatall pumps, valves, and other devices are capable of operatingproperly. In the event of a loss of communication with the net-work, the machine will start and be controlled locally. TheCCN device forces the variable CHIL_S_S to control the chill-er. The Unit Run Status (STAT) will indicate the current statusof the machine (OFF, RUNNING, STOPPING or DELAY),depending on the CCN command. The unit Occupied status(OCC) will indicate the current occupied state according to theCCN command and will be displayed as either NO or YES.The Status Unit Control Type (CTRL) will be LOCAL OFFwhen the Enable/Off/Remote Contact switch is Off. The StatusUnit Control Type will be CCN when the Enable/Off/RemoteContact switch input is Closed and the CHIL_S_S variable isStop or Start.For Dual Chiller Control applications, the Slave Chillermust be enabled using the CCN CONTROL option.Fluid Set Point Control Location — The factorydefault for the chilled water fluid set point is controlling to theleaving water temperature. An option to configure the machinefor entering water control is available. The control operationremains the same except the control point is focused on theentering water temperature, rather than the leaving water tem-perature when configured.To configure this option for the Touch Pilot™ display:To configure this option for the Navigator™ display:Cooling Set Point Selection — Several options forcontrolling the Leaving Chilled Water Set Point are offered andare configured by the Cooling Set Point Select (Setpoint Se-lect, SP.SE) variable. In addition to the Cooling Set Point Se-lect, Ice Mode Enable discussed later in this book, and HeatCool Select (Heat/Cool Select, HC.SE) variables also have arole in determining the set point of the machine. All units areshipped from the factory with the Heat Cool Select set to 0.All default set points are based on Leaving Water Control(Entering Fluid Control, EWTO) set to No. Values must beconfirmed for the individual set points. Limits for the set pointsare listed in the configurations noted below.To configure these options for the Touch Pilot display, seeTable 24A. To configure these options for the Navigator dis-play, see Table 24B.Table 24A — Cooling Set Point Selectionwith Touch Pilot DisplayTable 24B — Cooling Set Point Selectionwith Navigator DisplayIn all cases, there are limits on what values are allowed foreach set point. These values depend on the Cooler Fluid Typeand the Brine Freeze Set point, discussed later. See Table 25.Table 25 — Configuration Set Point Limits*The minimum set point for Medium Temperature Brine applicationsis related to the Brine Freeze Point. The set point is limited to be noless than the Brine Freeze Point +5° F (2.8° C).The Setpoint Select configuration can be set to five differentcontrol options: Set Point Occupancy, Set Point 1, Set Point 2,4-20 mA Input, and Dual Switch.SET POINT OCCUPANCY — Set Point Occupancy is thedefault configuration for the Setpoint Select variable. WhenSetpoint Select (Setpoint Select, SP.SE) is configured to 0(Setpoint Occ), the unit’s active set point is based on CoolingITEM ITEM EXPANSION PATH VALUEOPER Operating ControlType OperatingModesSLCTOPER CCNCONTROLAU.SM Auto Start whenSM Lost ConfigurationSERV YESDISPLAY NAME PATH LINENO. VALUEEntering FluidControlService\SERVICE1 5 No = Leaving Water ControlYes = Entering Water ControlITEM ITEM EXPANSION PATH VALUEEWTO Entering WaterControlConfigurationSERV No = LeavingWater ControlYes = EnteringWater ControlDISPLAY NAME PATH LINENO. VALUECooling Setpoint 1 Setpoint 2 Range: 14 to 70 F(–10.0 to 21.1 C)Default: 44 F (6.6 C)Cooling Setpoint 2 Setpoint 3 Range: 14 to 70 F(–10.0 to 21.1 C)Default: 44 F (6.6 C)Cooling Ice Setpoint Setpoint 4 Range: -20 to 32 F(–28.9 to 0 C)Default: 44 F (6.6 C)ITEM ITEM EXPANSION PATH VALUECSP.1 Cooling Setpoint 1 SetpointsCOOLRange: 14 to 70 F(–10.0 to 21.1 C)Default: 44 F (6.6 C)CSP.2 Cooling Setpoint 2 SetpointsCOOLRange: 14 to 70 F(–10.0 to 21.1 C)Default: 44 F (6.6 C)CSP.3 Ice Setpoint SetpointsCOOLRange: -20 to 32 F(–28.9 to 0 C)Default: 44 F (6.6 C)SET POINT LIMITSCOOLER FLUID TYPE(COOLER FLUID TYPE, FLUD)1, Water 2, BrineMinimum * 38 F (3.3 C) 14 F (–10.0 C)Maximum 60 F (15.5 C)