Manuals / Carrier / Household Appliance / Heating System

Carrier MPE62L-10R, 50MP62L-10R, 48MPD specifications Ð Field Power Wiring Connections

Models: MPE62L-10R 50MP62L-10R 48MPD

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Fig. 12 Ð Field Power Wiring Connections

Disconnect must be located within sight of the unit and read- ily accessible from the unit in compliance with NEC Article 440-14.

All ®eld wiring must comply with NEC and all local codes. Size wire based on MCA (Minimum Circuit Amps) value shown on the unit informative plate. See Fig. 12 for power wiring connections to the unit power terminal block and equip- ment ground.

Operating voltage to the compressor must be within the volt- age range indicated on the unit nameplate. Voltages between phases must be balanced within 2%, and the current must be balanced within 10%. See Table 5 for unit electrical data.

Use the following formula to determine the percent voltage imbalance.

% Voltage Imbalance

max voltage deviation from average voltage

= 100 x

average voltage

EXAMPLE: Supply voltage is 460-3-60.

AB = 452 v BC = 464 v AC = 455 v

452 + 464 + 455

Average Voltage =

3

1371

=

3 = 457

Determine maximum deviation from average voltage: (AB) 457 − 452 = 5 v

(BC) 464 − 457 = 7 v (AC) 457 − 455 = 2 v

Maximum deviation is 7 v.

Determine percent voltage imbalance:

7

% Voltage Imbalance = 100 x

457

= 1.53%

This amount of phase imbalance is satisfactory as it is be- low the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact local utility immediately.

Unit failure as a result of operation on improper line volt- age or excessive phase imbalance constitutes abuse and may cause damage to electrical components.

	LEGEND
EQUIP	Ð Equipment
GND	Ð Ground
NEC	Ð National Electrical Code
TB	Ð Terminal Block

Fig. 12 Ð Field Power Wiring Connections

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Carrier MPE62L-10R, 50MP62L-10R, 48MPD specifications Ð Field Power Wiring Connections

Contents

CONTENTS Installation, Start-Upand Service InstructionsCompressor Suction and Discharge CONTENTS contSAFETY CONSIDERATIONS GENERALINSTALLATION Install Outdoor HoodsCopy continues on page Table 1 Ð Physical Data Table1 Ð Physical Data cont Table 3 Ð Compressor Oil Charge Table 2 Ð Optional Power Exhaust SpecicationsFig. 1 Ð Roof Curb Dimensions, 48/50MP62L and 70M Fig. 2 Ð Roof Curb Dimensions, 48/50MP82N-10R Fig. 3 Ð Base Unit Dimensions, 48MP62L, 70M Fig. 4 Ð Base Unit Dimensions, 48MP82N-10R Fig. 5 Ð Base Unit Dimensions, 50MP62L and 70M Fig. 6 Ð Base Unit Dimensions, 50MP82N-10R Fig. 7 Ð Rigging Label Fig. 9 Ð Condensate Drain Piping Details Fig. 11 Ð Outdoor Air Hoods InstalledField Electrical Connections Make Electrical ConnectionsFig. 12 Ð Field Power Wiring Connections Table 5 Ð Electrical Data Device Non-ShieldedCable Table 6 Ð Recommended Sensor andFig. 13 Ð Space Temperature Sensor Wiring Fig. 14 Ð Space Temperature Sensor Averaging Fig. 19 Ð Fire/Smoke Control Fig. 18 Ð Accessory Humidity ControlFig. 15 Ð Heat Interlock Relay Fig. 16 Ð Differential Enthalpy SensorFig. 22 Ð Timed Discrete Output Fig. 26 Ð Remote Supply Air TemperatureReset/Space Temperature Offset Fig. 21 Ð Outdoor Air¯ow ControlTRANSDUCER ACCESSORY Fig. 27 Ð Transducer/ThermistorFig. 28 Ð CCN Building Supervisor Table 7 Ð CCN Connection Approved Shielded Cables Fig. 29 Ð Optional VFD Ð Wiring ConnectionsThe following color code is recommended Fig. 32 Ð Auxiliary Control Box Fig. 31 Ð Auxiliary Control Box Location50MP70M Unit Shown Fig. 33 Ð Air Pressure Tubing LocationsFig. 35 Ð Flue and Inlet Hood Locations Installing Flue/Inlet Hoods 48MP Units OnlyFig. 36 Ð Inlet Hood Assembly Fig. 37 Ð Flue Hood Fig. 34 Ð Gas Piping DetailsFig. 40 Ð Outer View, Compressor Mounting Fig. 39 Ð Fan isolator AdjustmentCheck Compressor Mounting Fig. 38 Ð Flue De¯ector Baffle AssembledSystem Check Rail Assembly Ð 48/50MP70M-10RUnitsRail Assembly Ð 48/50MP70M-10RUnits PRE-START-UPFig. 44 Ð Operating Oil Levels Sight Glass Evaporator-FanBelts, Pulleys, and Sheaves ÐAIRFLOW AIRFLOW Table 13 Ð Fan Performance Air Foil Ð 48/50MP62L Table 15 Ð Fan Performance Air Foil Ð 48/50MP82N Table 14 Ð Fan Performance Air Foil Ð 48/50MP70MTable 17 Ð Fan Performance Air Foil Ð 48/50MP10R Table 16 Ð Fan Performance Air Foil Ð 48/50MP90PTable 18 Ð Component Pressure Drop in. wg Table 20 Ð Maximum Allowable Power ExhaustTable 22 Ð Filter Switch Dirty Set Point Controls Conguration and Quick TestEnthalpy Sensor HH57AC077 Fig. 46 Ð Psychrometric Chart forFig. 47 Ð Wiring Connections for Solid-State Enthalpy ControlTable 24 Ð Set Point Ranges and Defaults Table 25 Ð Basic Conguration Data START-UP Initial CheckGeneral Table 26 Ð IGC Control Board LED Alarms Control Loop Checkout Compressors CONTROL SYSTEMComponents Table 29 Ð Index of Lead/Lag Circuits andKEYPAD AND DISPLAY MODULE HSIO FUNCTIONS SERVICE Table 30 Ð Variable Frequency Drive VFD DisplayFig. 49 Ð VFD Digital Operator Fig. 50 Ð Door Latch Fig. 51 Ð Access Locations 48MP70M Unit ShownFig. 53 Ð Removing Heat Exchanger Ceramic LubricationRefrigerant Circuit Fig. 52 Ð Burner Section DetailFig. 55 Ð Charging Chart Ð Unit 48/50MP62L Fig. 56 Ð Charging Chart Ð Unit 48/50MP70MFig. 57 Ð Chrging Chart Ð Unit 48/50MP82N Fig. 59 Ð Charging Chart Ð Unit 48/50MP10R Fig. 58 Ð Charging Chart Unit 48/50MP90PAdjustments Fig. 60 Ð 06E Compressors, Typical Fig. 61 Ð Motor Plate AdjustmentFig. 63 Ð Gas Valve Gas Valve AdjustmentProtective Devices Fig. 62 Ð Pulley AlignmentVariable Frequency Drive VFD Installation Processor Modules PSIOHigh-VoltageRelay Modules DSIO1 and DSIO2 Compressor Replacement Ð Perform the following TROUBLESHOOTINGFig. 64 Ð Condenser Fan Adjustment TROUBLESHOOTING AND DIAGNOSTICS TROUBLESHOOTING AND DIAGNOSTICS cont Fig. 65 Ð IGC Control Heating Ð 48MP Units Only Page CALL FOR FREE CATALOG PACKAGED SERVICE TRAININGI. PRE-START-UP START-UPCHECKLISTIV. START-UP III.PRELIMINARY CHECKLIST ITEMS contCHANGES TO DEFAULT VALUES TEMPERATURESKEYBOARD CONTROL CONFIGURATIONVALUES IN INDICATE FACTORY DEFAULTS CL-3DESCRIPTION CONSTANT VOLUME CONTROL CONFIGURATIONKEYBOARD DISPLAY