Carrier 48HJ015-025 installation instructions START-UP Checklist, Pre-Start-Up

Page 32

 

 

START-UP CHECKLIST

MODEL NO.:

 

SERIAL NO.:

 

 

DATE:

 

 

TECHNICIAN:

 

PRE-START-UP:

VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTRUCTIONS

VERIFY INSTALLATION OF ECONOMIZER HOOD

VERIFY INSTALLATION OF EXHAUST HOOD

VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS

VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT

CHECK GAS PIPING FOR LEAKS

CHECK THAT INDOOR-AIR FILTER IS CLEAN AND IN PLACE

VERIFY THAT UNIT IS LEVEL

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

VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED

START-UP

ELECTRICAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUPPLY VOLTAGE L1-L2

 

 

 

 

L2-L3

 

 

 

L3-L1

 

 

 

 

 

 

COMPRESSOR AMPS Ð COMPRESSOR NO. 1

L1

 

 

 

L2

 

 

L3

 

 

Ð COMPRESSOR NO. 2

 

L1

 

 

 

L2

 

 

L3

 

SUPPLY FAN AMPS

 

 

 

 

EXHAUST FAN AMPS

 

 

 

 

 

 

 

 

 

 

 

 

 

TEMPERATURES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTDOOR-AIR TEMPERATURE

 

 

 

 

 

 

 

 

F DB (Dry Bulb)

 

 

 

 

 

 

 

 

 

 

 

 

 

RETURN-AIR TEMPERATURE

 

 

 

 

 

 

 

 

F DB

 

 

F WB (Wet Bulb)

 

 

 

 

COOLING SUPPLY AIR

 

 

 

 

 

 

 

F

 

 

 

 

 

 

 

 

 

 

 

 

 

GAS HEAT SUPPLY AIR

 

 

 

 

 

 

 

F

 

 

 

 

 

 

 

 

 

 

 

 

 

PRESSURES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GAS INLET PRESSURE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN. WG

 

 

 

 

 

 

 

 

 

 

 

 

 

GAS MANIFOLD PRESSURE

STAGE NO. 1

 

 

 

 

 

 

 

IN. WG

 

STAGE NO. 2

 

 

 

IN. WG

REFRIGERANT SUCTION

CIRCUIT NO. 1

 

 

 

 

 

 

 

 

PSIG

 

CIRCUIT NO. 2

 

 

 

 

PSIG

REFRIGERANT DISCHARGE

CIRCUIT NO. 1

 

 

 

 

 

 

 

 

PSIG

 

CIRCUIT NO. 2

 

 

 

 

PSIG

VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGES 21 AND 22

GENERAL

ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS

Copyright 1995 Carrier Corporation

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

Book

1

 

PC 111

Catalog No. 534-807

Printed in U.S.A.

Form 48HJ-9SI

Pg CL-1

2-95

Replaces: 48HJ-5SI

Tab

1a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Installation ContentsSafety Considerations Accessory Curb Description ``A ``B ``CPackage no Height 50DP900211Unit Dimension aUnit Maximum Shipping Weight Physical Data Base Unit Dimensions, 48HJ015,017 Base Unit Dimensions, 48HJ025 Air Distribution Ð Through-the-Bottom 48HJ017 and 025 Shown Combustion Fan Housing Location Make Electrical Connections Electrical DataEquip GND48HJD015 All 48HJD025, HJE015 HJE017 Make Outdoor-Air Inlet AdjustmentsUnit Voltage Unit Economizer Motor Control Module Location Accessory Field-Installed Economizer Adjust START-UPFiop Ð Fan Performance Data, 48HJ015, 208/230, 460-V UnitsAirflow Ð Fan Performance Data, 48HJ015, 575-V Units Fan Performance Data, 48HJ017 Units Unit 48HJ Minimum CFM Maximum CFM Fan Performance Data, 48HJ025 UnitsAir Quantity Limits Accessory/FIOP Economizer Static Pressure in. wg Base Unit OperationUnit CFM Economizer Pressure DropService LubricationManufacturer Lubricant Evaporator Fan, 48HJ015 UnitsEvaporator Fan, 48HJ017,025 Units Belt Tension Adjustment Ð To adjust belt tension Condenser-Fan AdjustmentEconomizer Checkout Procedures High and Low Outdoor-Air TemperaturePilot Adjustment Gas Valve AdjustmentProtective Devices Main Burner RemovalTypical Wiring Schematic 48HJ025 Shown Typical Wiring Schematic 48HJ025 Shown Typical Component Arrangement 48HJ025 Shown AHA IFMIFR CLOPage Page Packaged Service Training Page START-UP Checklist PRE-START-UP

48HJ015-025 specifications

The Carrier 48HJ015-025 is a distinguished series of rooftop packaged units renowned for their efficient performance and reliability in light commercial applications. Designed for a variety of indoor environments, these units are engineered to provide efficient heating and cooling solutions, making them suitable for retail spaces, offices, and other commercial buildings.

One of the main features of the Carrier 48HJ series is its advanced scroll compressor technology, which enhances the overall efficiency of the systems. This type of compressor is known for its durability and quiet operation, providing consistent temperature control while minimizing energy consumption. The use of a scroll compressor contributes to a higher Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF), making these units a smart choice for energy-conscious businesses.

Additionally, the 48HJ series incorporates a multi-speed indoor blower that allows for precise airflow control. This feature ensures optimal indoor comfort by adjusting the air distribution based on the specific heating or cooling needs of the space. The ability to adapt to varying load conditions enhances efficiency and reduces energy wastage.

Another noteworthy characteristic of the Carrier 48HJ015-025 is its robust construction. Built with galvanized steel, the units are designed to withstand harsh environmental conditions, ensuring longevity and minimal maintenance requirements. The powder-painted finish offers corrosion resistance, contributing to the unit’s durability over time.

The series also integrates advanced controls for ease of operation. The user-friendly thermostat enables precise temperature management and can be programmed according to the specific needs of the facility. Moreover, compatibility with Building Management Systems (BMS) facilitates seamless integration into existing infrastructure, enabling remote monitoring and enhanced operational efficiency.

In terms of environmental considerations, the Carrier 48HJ series utilizes R-410A refrigerant, which is known for its reduced impact on the ozone layer compared to older refrigerants. This commitment to sustainability aligns with modern environmental standards and regulations.

Overall, the Carrier 48HJ015-025 stands out as a versatile and efficient rooftop packaged unit, perfect for varying commercial applications. Its combination of advanced technology, reliability, and user-focused design makes it a prominent choice for businesses seeking optimized climate control solutions while ensuring sustainability and energy efficiency.
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