Carrier AQUAZONE 50PTH Installation And Service Instructions Manual

21*Optional Wiring.AL — Alarm Relay ContactsASTAT — AquastatBM — Blower MotorBMC — Blower Motor CapacitorBR — Blower RelayCB — Circuit BreakerCC — Compressor ContactorCO — Sensor, Condensate OverflowDTS — Discharge Temperature SwitchECM — Electronically Commutated MotorFP1 — Sensor, Water Coil Freeze ProtectionFP2 — Sensor, Air Coil Freeze ProtectionHP — High-Pressure SwitchHPWS — High-Pressure Water SwitchHWG — Hot Water GeneratorJW1 — Clippable Field Selection JumperLOC — Loss of Charge Pressure SwitchLON — Local Operating NetworkMV — Motorized ValveNEC — National Electrical CodeP1 — Field Wiring Terminal BlockRVS — Reversing Valve SolenoidTRANS — TransformerLEGENDField Line Voltage WiringField Low Voltage WiringPrinted Circuit TraceOptional WiringRelay/Contactor CoilCondensate PanSolenoid CoilTemperature SwitchThermistorGroundWire NutRelay Contacts - N.C.Relay Contacts - N.O.Low Pressure SwitchHigh Pressure SwitchSplice CapCircuit BreakerNOTES:1. Compressor and blower motor thermally protected internally.2. All wiring to the unit must comply with NEC and local codes.3. Transformer is wired to 460 v (BLK/RED) lead for 460/3/60 units. Transformer is energy limiting or mayhave circuit breaker.4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.5. Typical thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Ther-mostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.6. Factory cut JW1 jumper. Dry contact will be available between AL1 and AL2.7. Transformer secondary ground via Deluxe D board standoffs and screws to control box. (Ground avail-able from top two standoffs as shown.)8. Aquastat is supplied with unit and must be wired in series with the hot leg to the pump. Aquastat is ratedfor voltages up to 277-v.9. Place jumpers on 2 and 3, ICM board, when dehumidification mode is used.10. Optional LON wires. Only connect if LON connection is desired at the wall sensor.11. Blower motor is factory wired for medium and high speeds. For any other combination of speeds, at themotor attach the BLK wire to the higher of the two desired speed taps and the BLU wire to the lower ofthe two desired speed taps.12. Blower motor is factory wired for high and low speeds. No other combination is available.13. The 460-v units using an ECM (electronically commutated motor) fan motor, modulating HWR, and/or aninternal secondary pump will require a neutral wire from the supply side in order to feed the accessorywith 265-v.Fig. 22 — Wiring of 50PTH,PTV,PTD026-072 Units with Deluxe D and LON Controller, Three Phase (460 V)Deluxe DHPLOCFP1FP2RVSCOSEE NOTE 4a50-8364