Carrier 50MP62L-10R, MPE62L-10R, 48MPD START-UP Checklist, Model no Serial no Date Technician

Page 61

 

 

START-UP CHECKLIST

MODEL NO.:

 

SERIAL NO.:

 

 

DATE:

 

 

TECHNICIAN:

 

I. PRE-START-UP:

VERIFY THAT UNIT IS LEVEL

VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

LOOSEN ALL SHIPPING HOLDDOWN BOLTS AND REMOVE SHIPPING BRACKETS PER INSTRUCTIONS VERIFY THAT COMPRESSOR SUSPENSION SPRINGS HAVE BEEN LOOSENED PER INSTRUCTIONS VERIFY ASSEMBLY OF ECONOMIZER HOOD

VERIFY INSTALLATION OF EXHAUST HOOD

VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS

VERIFY THAT POWER SUPPLY MATCHES UNIT DATA PLATE

VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT

CHECK GAS PIPING FOR LEAKS (48MP ONLY)

CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE

CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SET SCREW IS TIGHT

VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED OPEN SUCTION, DISCHARGE, AND LIQUID LINE SERVICE VALVES

CHECK COMPRESSOR OIL LEVEL SIGHT GLASS AND VERIFY PROPER LEVEL

VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR 24 HOURS

CHECK VOLTAGE IMBALANCE

 

 

 

 

 

 

 

 

 

 

 

 

 

LINE-TO-LINE VOLTS:

AB

 

V

AC

 

 

V

BC

 

V

(AB + AC + BC)/3 = AVERAGE VOLTAGE =

 

 

 

 

V

 

 

 

 

 

MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =

 

 

 

V

 

 

VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) =

 

 

%

IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM!

 

 

CALL LOCAL POWER COMPANY FOR ASSISTANCE.

 

 

 

 

 

 

 

II.PRELIMINARY CHECKLIST ITEMS (DETERMINE BEFORE CONFIGURING CONTROLS):

CONTROL SETTINGS FOR NON-NETWORKED, FREESTANDING UNIT

UNIT TO BE OPERATED ON CONSTANT AIR VOLUME (CV) RATHER THAN VARIABLE-AIR VOLUME (VAV)

CONFIRM THAT SPACE TEMPERATURE SENSOR (T55) HAS BEEN WIRED CORRECTLY PER SPACE TEMPERATURE SENSOR (T55) SECTION ON PAGE 17.

CONFIRM THAT TUBING FOR SPACE AND SUPPLY DUCT PRESSURES HAS BEEN INSTALLED SET ENTHALPY CONTROL SET POINT ON ECONOMIZER

SET SUPPLY FAN AND ``CHECK FILTER'' STATUS SWITCHES FOR JOB REQUIREMENTS

UNIT OPTION CHECKLIST

ITEM

PRESENT?

A

CONSTANT VOLUME POWER EXHAUST

B

VARIABLE VOLUME POWER EXHAUST

C

VARIABLE FREQUENCY DRIVE ON SUPPLY FAN (VAV ONLY)

D

HOT GAS BYPASS

E

VAV WITH OCCUPIED HEAT

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Book

1

1

 

PC 111

Catalog No. 534-893

Printed in U.S.A.

Form 48/50MP-1SI

CL-1

12-98

Replaces: 50MP-1SI

Tab

1a

1b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 60 Page 62
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Page 60 Page 62
Contents Contents Installation, Start-Up and Service InstructionsSafety Considerations ContentsGeneral Install Outdoor Hoods InstallationBase Unit 48/50MP Physical DataPhysical Data Compressor Oil Charge Optional Power Exhaust SpecicationsVariable Frequency Drive VFD Physical Data FAN MotorRoof Curb Dimensions, 48/50MP62L and 70M Roof Curb Dimensions, 48/50MP82N-10R Base Unit Dimensions, 48MP62L, 70M Base Unit Dimensions, 48MP82N-10R Base Unit Dimensions, 50MP62L and 70M Base Unit Dimensions, 50MP82N-10R Size Unit WeightUnit Make Electrical Connections Field Electrical ConnectionsGND EquipNEC FLA Electrical DataLRA MCAManufacturer Recommended Sensor Device Non-Shielded CableSpace Temperature Sensor Wiring Space Temperature Sensor Averaging Heat Interlock Relay Outdoor Air¯ow Control Transducer/Thermistor CCN Connection Approved Shielded Cables COM CCNComm Auxiliary Control Box Location 50MP70M Unit Shown Gas Piping Details Installing Flue/Inlet Hoods 48MP Units OnlyFlue De¯ector Baffle Assembled Check Compressor MountingSystem Check PRE-START-UPExample Evaporator-Fan Belts, Pulleys, and Sheaves ÐFan Performance Forward Curved Ð 48/50MP70M Fan Performance Forward Curved Ð 48/50MP62LFan Performance Forward Curved Ð 48/50MP90P Fan Performance Forward Curved Ð 48/50MP82NFan Performance Air Foil Ð 48/50MP62L Fan Performance Forward Curved Ð 48/50MP10RFan Performance Air Foil Ð 48/50MP82N Fan Performance Air Foil Ð 48/50MP70MFan Performance Air Foil Ð 48/50MP10R Fan Performance Air Foil Ð 48/50MP90PControls Conguration and Quick Test Hsio Keypad Key Usage Keypad and Display Module Hsio ConfigurationSet Point Ranges and Defaults START-UP SET Point Subfunction Display Default RangeInitial Check Basic Conguration DataSupply FAN GeneralOccupied Cooling Overrides IGC Control Board LED Alarms48/50MP Units SMG, SCV and MLG Recommended Starting Values Control Loop CheckoutComponents Control SystemIndex of Lead/Lag Circuits Compressors Lead CircuitStby YES Keypad and Display Module HsioSUB Functions Hsio Keypad and Display Module Functions and SubfunctionsFunction Variable Frequency Drive VFD Display ServiceEVAPORATOR-FAN MOTORS, PULLEYS, and Belts Power Exhaust MOTORS, PULLEYS, and BeltsRefrigerant Circuit LubricationManufacturer Lubricant Charging Chart Ð Unit 48/50MP62L Charging Chart Unit 48/50MP90P Pressure Switch Settings Psig kPag AdjustmentsBelt Installation and Tensioning Switch Cutout CUT-IN06E Compressors, Typical Protective Devices Gas Valve AdjustmentMain Burner Removal Compressor ProtectionVariable Frequency Drive VFD High-Voltage Relay Modules DSIO1 and DSIO2 Processor Modules PsioStby no Troubleshooting Compressor Replacement Ð Perform the followingTorque Compressors Problem Solution Compressor does not RUN Troubleshooting and DiagnosticsCompressor Stops on HIGH-PRESSURE Switch Compressor Cycles on LOW-PRESSURE SwitchTroubleshooting and Diagnostics IGC Control Heating Ð 48MP Units Only Page Call for Free Catalog Packaged Service TrainingModel no Serial no Date Technician START-UP ChecklistIV. START-UP III. Preliminary Checklist ItemsCL-3 Fact Config Fanm

MPE62L-10R, 50MP62L-10R, 48MPD specifications

The Carrier 48MPD, 50MP62L-10R, and MPE62L-10R are advanced rooftop packaged units designed for a variety of commercial HVAC applications. These systems offer a compelling blend of energy efficiency, versatility, and high performance, making them ideal choices for businesses looking to enhance their indoor climate control.

One of the standout features of the Carrier 48MPD series is its high efficiency rating, which significantly reduces operational costs while minimizing environmental impact. The unit utilizes advanced scroll compressors that provide reliable and efficient cooling capabilities, ensuring optimal temperature regulation regardless of outdoor conditions. This innovative design also contributes to quieter operation, enhancing indoor comfort without disruptive noise levels.

The Carrier 50MP62L-10R model boasts superior cooling and heating capabilities, equipped with a multi-speed fan system that allows for tailored airflow to suit specific project requirements. This model's economizer feature is pivotal for harnessing outside air to offset mechanical cooling, leading to further energy savings, particularly in moderate weather conditions. Additionally, the unit's dual-fuel capability enhances its operational flexibility, allowing it to switch between electric and gas heating sources depending on efficiency needs.

In terms of control technologies, the MPE62L-10R is equipped with Carrier's advanced Smart Evaporator Control, which ensures precise humidity management while optimizing energy consumption. This model also integrates seamlessly with building automation systems, enabling remote monitoring and adjustments for greater operational oversight and efficiency. The intuitive user interface simplifies system programming and operation, making it accessible even for those without extensive technical backgrounds.

Another important characteristic of these units is their robust construction, designed to withstand challenging weather conditions and ensure longevity. The use of high-quality materials and components means lower maintenance costs over time.

Overall, the Carrier 48MPD, 50MP62L-10R, and MPE62L-10R represent a well-engineered suite of HVAC solutions that excel in efficiency, adaptability, and user-friendliness, establishing themselves as leading choices for commercial indoor climate management. With their blend of innovative technology and solid performance, these systems are well-suited to meet the diverse needs of modern commercial spaces.
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