Carrier OMNIZONE 50BV020-064 Installation And Service Instructions Manual

Also see for OMNIZONE 50BV020: Operating and troubleshooting guide

Contents

65LEGEND AND NOTES FOR FIG. 41-47LEGENDALARM — Unit Alarm Relay (Critical Fault)ALM-CM — Alarm/Warning Relay CommonAO — Analog OutputAQUA — AquastatBM — Blower MotorBPS_S — Fan Start/Stop Relay (VFD Bypass Mode)BR — Blower RelayBYPAS — VFD Bypass ControlCBR — Circuit BreakerCC — Compressor ContactorCCN — Carrier Comfort Network ®CDWF — Condenser Waterflow RelayCDWFS — Condenser Waterflow SwitchCLO — Compressor Lockout ControlCMP — Compressor Control RelayCOMPR — CompressorCSMUX — Signal Multiplexer-Comp StatusDHS — Duct High Static Limit SwitchDO — Digital OutputDSP — Duct Static Pressure TransducerECONO — Economizer Valve/Damper ControlEWT — Entering Water Temperature SensorFLTS — Filter Status SwitchFREEZ — Freeze Thermostat (Water Economizer)FSD — Fire Alarm/ShutdownGND — GroundHIR — Heat Interlock RelayHPS — High Refrigerant Pressure SwitchLPS — Low Refrigerant Pressure SwitchMA_RA — Mixed/Return Air Temperature SensorMBVR — Motorized Ball Valve RelayMSR — Local/Remote Control RelaysOLR — Compressor Motor ProtectorPCB1 — Unit Control BoardPCB2,3 — I/O Expansion BoardPHASE — Phase/Rotation MonitorPHASER — Phase Monitor RelayRAT — Return Air ThermostatRESET — External ResetROCC — Remote OccupancySAT — Supply Air Temp. SensorSPT — Space/Zone Temperature SensorSF — Supply Fan Start/Stop RelaySPEED — 0-10 VDC Signal Isolator for VFDSW — SwitchT — TransformerTB2 — Terminal Block for Field ConnectionsTRANS — TransformerTRMCT — VAV Terminals ControlTRMOP — VAV Terminals OpenVENTR — Ventilation OutputVFD — Variable Frequency DriveWARN — Unit Warning Relay (Non-Critical Fault)Factory WiringField WiringNOTES:1. Partial wiring shown on both power and control diagrams.2. Class 2 transformer TRANS-1 is wired into separate circuit. Do not interconnect othertransformers or circuits; circuit separation or compressor transformers from low voltagecontrol panel transformers shall be maintained.3. Shielded wire shall have drain wire connected to VFD ground screw. The floating endof the drain wire shall be insulated.4. Shielded wire shall have drain wire connected to the control panel, adjacent to thePCB. The floating end of the drain wire shall be insulated.

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