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Carrier 48HJD005 User Manual

Carrier 48HJD005
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Copyright 1999 Carrier Corporation Form 48HJ-11PD
Carrier has designed the Weather-
master series based on customer
needs and requests to be the most
efficient and reliable rooftop unit ever
made.
Features/Benefits
Most efficient rooftop line for
cooling using scroll compressor
technology
Most efficient rooftop line for
heating using dimpled heat
exchangers on all units
High reliability — non-corrosive
condensate pans, prepainted
cabinets and primed interior
panels, and all units are fully
protected by internal safeties
Quietest operation — all
compressors mounted on
independent vibration isolators.
Standard, belt-driven evaporator
fan motors on all units
Ease of maintenance achieved by
self diagnostics on the Integrated
Gas Controller (IGC), optional
direct digital controls, standard
size filters, tool-less filter access,
simple compressor access,
permanently lubricated fan
motors, optional disconnect
switch, optional 115-v
convenience outlet, and optional
hinged access panels
Exclusive MoistureMiser
dehumidification package — a
result of recent advances by
Carrier in controlling comfort
levels. This factory-installed
option significantly improves the
dehumidification capability of the
rooftop unit and helps control
humidity levels in the building.
48HJD/HJE/HJF
Single-Package Rooftop Units
High-Efficiency Electric Cooling/
Gas Heating
3 to 12
1
/
2
Nominal Tons
Product
Data
48HJ004-007
48HJ008-014
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Carrier 48HJD005 Specifications

General IconGeneral
Model48HJD005
TypeHeat Pump
RefrigerantR-410A
Voltage208/230V
Compressor TypeScroll
Cooling Capacity54, 000 BTU
SEER Rating16
HSPF Rating9.0

Summary

Product Features and Benefits

Key Features Overview

Details the advantages and key characteristics of the rooftop units, covering efficiency, reliability, and maintenance.

Model Number Nomenclature

Explains the coding system for 48HJ unit model numbers, detailing capacity, features, and options.

Unit Capacities and Performance

ARI Cooling and Heating Capacities

Presents cooling performance data (TC, SHC, SEER, EER, IPLV) and heating capacities for various unit models.

Cooling Performance Data Tables

Comprehensive tables showing cooling capacities (TC, SHC) under various temperature and airflow conditions.

Physical and Electrical Specifications

Physical Data and Dimensions

Provides physical specifications including operating weights, compressor details, fan sizes, and coil dimensions.

Unit Electrical Specifications

Details electrical requirements, including voltage, compressor, fan motor data, and minimum disconnect sizes.

Installation and Operation Guide

Unit Selection Procedure Example

A step-by-step guide illustrating how to select an appropriate unit based on cooling and heating loads.

Unit Controls and Operating Sequences

Explains the operational sequences for cooling and heating, including economizer and MoistureMiser functions.

Typical Wiring Schematic

A schematic showing the electrical connections for the rooftop unit, including components and control logic.

Application Data and Guide Specifications

Humidity Control and IAQ Impact

Discusses the impact of humidity on equipment efficiency, comfort, and indoor air quality, highlighting the MoistureMiser package.

Standard Equipment Guide Specifications

Outlines general requirements, quality assurance, and detailed specifications for unit components and construction.

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