Carrier 48JZ (N) 024-060, 50GL 024-060, 48GP (N) 024-060 Easy SELECT-48JZ, Select Options

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b.COOLING MODE

(1.) If indoor temperature is above temperature set point and humidity is below humidity set point, thermostat closes circuits R to G, R to Y/Y2 and R to O—The unit delivers single speed cooling airflow.

c.COOLING MODE-DEHUMIDIFICATION

(1.) If indoor temperature is above temperature set point and humidity is above humidity set point, thermostat or Ther- midistat™ closes circuits R to G, R to Y/Y2, R to O and humidistat or Thermidistat™ opens R to DH—The unit delivers airflow which is approximately 80 percent of the nominal cooling airflow to increase the latent capacity of the system.

d.COOLING MODE-SUPER DEHUMIDIFY OPERATION (SEE QUICK REFERENCE GUIDE)

NOTE: The indoor control used, such as a Thermidistat™, must be capable of providing Super Dehumidify operation mode and control must be configured as outlined in its installation instruc- tions. Consult indoor control literature to determine if control is capable of providing Super Dehumidify inputs and for configura- tion instruction.

(1.) If the indoor temperature is below the temperature set point and the humidity is above the humidity set point, the Thermidistat™ closes circuit R to O, opens circuits R to DH and R to G, and closes circuit R to Y/Y2. If circuit R to G is closed (24-v.), the motor will deliver airflow at the full cooling or cooling plus dehumidify mode requested value. If circuit R to G is open (0–v.) for Super Dehu- midify mode, the motor delivers reduced airflow to maxi- mize the humidity removal of the system while minimizing over cooling.

e.GAS HEATING MODE

(1.) Thermostat closes circuit R to W/W1—The unit delivers the selected gas heat airflow. The IGC will control a 45 sec. blower “On” delay and a 45 sec. “Off” delay.

EASY SELECT™—48JZ

NOTE: Either the Carrier Thermidistat™ or Dual Fuel ther- mostat is required for operation of the dual-fuel (48JZ) units. Be sure to follow the installation instructions supplied with the Thermidistat™. Either indoor temperature control must use an outdoor air sensor to properly control heating operation.

EASY SELECT™ CONFIGURATION TAPS FOR 48JZ

Easy Select™ taps are used by the installer to configure a system. The ICM motor uses the selected taps to modify its operation to a pre-programmed table of airflows.

The unit must be configured to operate properly with system components with which it is installed. To successfully configure a basic system (see information printed on circuit board label located next to select pins), move the 6 select wires to the pins which match the components used (See Fig. 8).

a.GAS HEAT/CFM—SELECT GAS HEAT INPUT SIZE Factory selected gas heat size should correspond to unit label.

b.AC/HP SIZE—SELECT SYSTEM SIZE INSTALLED

Factory selected air conditioner size should correspond to capacity of unit installed. Installer should verify air conditioner size to ensure that airflow delivered falls within proper range for the size unit installed. This applies to all operational modes.

c.SYSTEM TYPE—SELECT SYSTEM TYPE INSTALLED

Factory selected on 48JZ for HP-EFF.

SELECT OPTIONS

1. HP-COMFORT provides approximately 315 CFM/ton for higher normal heating air temperature and provides approxi-

 

 

9 PIN CONNECTOR

 

 

ICM PRINTED CIRCUIT BOARD

 

 

 

SEC1

 

SEC2

 

J1

 

 

 

 

 

 

 

 

EASY SELECTTM

 

 

 

GAS HEAT/CFM

 

 

 

 

090

060

040

N/A

 

 

A

1250

1100

800

 

 

 

VIO

 

 

 

 

 

 

 

 

 

 

 

 

 

AC/HP SIZE

 

 

 

B

036

030

024

018

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM TYPE

 

 

DH

C

AC

HP-COMFORT

HP-EFF

 

 

 

 

 

 

ORN

 

 

 

 

R

 

AC/HP CFM ADJUST

 

W1

D

NOM

LO

 

HI

 

W2

BLK

 

 

 

 

Y1

 

ON/OFF DELAY

 

 

Y/Y2

 

 

 

G

 

 

 

 

J2

 

 

0

30

0

 

O

E

ENH

 

90

90

0

 

 

C

WHT

 

 

 

 

 

 

 

 

 

 

 

CONTINUOUS FAN

AUX1

HUM1

 

LO

MED

HI

YEL

F

 

 

YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUX2

HUM2

 

 

 

 

 

24VAC

 

 

HEATER/MOTOR

GRY

 

 

 

 

 

12 PIN CONNECTOR

C01039

Fig. 8—Detail of SPP Printed-Circuit Board

mately 350 CFM/ton cooling airflow for good humidity re- moval

2. HP-EFF (factory selected) Provides equal airflow for heating and cooling modes to increase overall heat pump efficiency. Provides approximately 400 CFM/ton.

d.AC/HP CFM ADJUST—SELECT NOMINAL, LOW, OR HIGH AIRFLOW

The AC/HP CFM Adjust select is factory set to the High-HI (NOM for 036, 060) tap. The CFM Adjust selections NOM/LO will regulate airflow supplied for all operational modes, except non-heat pump heating modes. HI provides 15 percent airflow over nominal unit size selected and LO provides 10 percent airflow below nominal unit size selected. Adjust selection options are provided to adjust airflow supplied to meet indi- vidual installation needs for such things as noise, comfort, and humidity removal (See Fig. 8, D as indicated).

e.ON/OFF DELAY—SELECT DESIRED TIME DELAY PROFILE

Four motor operation delay profiles are provided to customize and enhance system operation (See Fig. 8, E as indicated). Selection options are:

(1.) The standard 90 sec off delay (Factory Setting) at 100 percent airflow in cooling or heat pump heating mode. In gas heating mode, IGC will control a 45 sec “On” delay and a 45 sec “Off” delay.

(2.) A 30 sec cooling delay with no airflow/ 90 sec off delay at 100 percent airflow profile is used when it is desirable to allow system coils time to cool-down/heat-up in conjunc- tion with the airflow in cooling or heat pump heating mode.

(3.) A no delay option used for servicing unit or when a thermostat is utilized to perform delay functions. In gas heating mode IGC will control 45 sec on delay with no airflow and 45 sec off delay.

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Contents Installation, Start-Up, and Operating Instructions Easy SELECT-48GP Special Procedures for 208-V OperationControl Voltage Connections Standard ConnectionHigh Airflow Time Delay ProfileWhen Thermostat is SET on Continuous FAN 48GP Sequence of Operation Accessory InstallationAIR Conditioner Select Options Easy SELECT-48JZHumidifier Wiring-48JZ Easy SELECT-50GL & 50JZ 48JZ Sequence of OperationTion Page 50GL & 50JZ Sequence of Operation Humidifier Wiring for 50GL & 50JZFAN Operation ICM Fiop START-UPGAS Heat Mode Cooling ModeHeat Pump Heating Automatic CHANGE-OVERICM Fiop Physical Data-Unit 48GP Size 48GP LOSS-OF-CHARGE/LOW-PRESSURE Switch48GP with ICM Fiop Electrical Data ICM Fiop Electric Schematic-Unit 48GP Outdoor Coil ICM Fiop Physical Data-Unit 48JZIndoor Coil Indoor Blower48JZ with ICM Fiop Electrical Data ICM Fiop Electric Schematic-Unit 48JZ ICM Fiop Physical Data-Unit 50GL Range Motor Heat Power Supply Size 50GL50GL with ICM Fiop Electrical Data ICM Fiop Electrical Schematic-50GL Refrigerant ICM Fiop Physical Data-Unit 50JZCompressor Quantity Type 50JZ with ICM Fiop Electrical Data Range Motor Heat Power Supply Size 50JZICM Fiop Electrical Schematic-50JZ CFM Adjust LO PIN NOM PIN HI PIN Unit PIN Select Size 48GP & 48JZ Gas Heating ICM Airflow Large Cabinet 48GP & 48JZ ICM Air Flow vs. Temperature Rise Chart48GP & 48JZ Gas Heating ICM Airflow Small Cabinet Minimum Airflow for Reliable Electric Heater Operation CFM Electric Heat Pressure Drop Table in. wg Large Cabinet Electric Heat Pressure Drop Table in. wgICM Fiop WET Coil Pressure Drop in. wg Filter Pressure Drop Table in. wgCause Remedy Troubleshooting ChartPreliminary Information START-UP ChecklistBook Catalog No Form 48-21SI 10-01 Replaces 48-20SI Tab

48JZ (N) 024-060, 50JZ 024-060, 48GP (N) 024-060, 50GL 024-060 specifications

The Carrier 50GL 024-060, 48GP (N) 024-060, 50JZ 024-060, and 48JZ (N) 024-060 units are part of Carrier’s advanced HVAC solutions, offering efficient cooling and heating systems designed for both residential and light commercial applications. These models are known for their reliability, energy efficiency, and innovative technology, making them a popular choice for users looking to enhance comfort while reducing operational costs.

One of the main features of the Carrier 50GL series is its use of high-efficiency compressors. These compressors are engineered to operate quietly and effectively, providing optimal performance even during peak load conditions. Additionally, they are equipped with smart features that allow for precise temperature control and improved energy savings, often exceeding standard performance metrics.

The 48GP (N) units are particularly notable for their compact design, making them ideal for installations where space is a limitation. Despite their smaller footprint, they boast significant cooling and heating capacities, ensuring consistent comfort. The use of advanced variable-speed technology in these units helps to maintain consistent indoor temperatures while minimizing energy consumption.

The 50JZ and 48JZ (N) models incorporate advanced inverter technology, allowing for variable refrigerant flow. This technology adjusts the system's output according to the demand, resulting in lower energy usage and increased comfort levels. Additionally, these units feature enhanced filtration systems that improve indoor air quality by capturing airborne pollutants, allergens, and other contaminants.

Another key characteristic of these Carrier units is their durability. Built with high-quality materials, they are designed to withstand harsh environmental conditions, ensuring longevity and reduced maintenance requirements. Furthermore, the installation process is simplified, thanks to user-friendly design features that promote easy serviceability and accessibility.

Overall, the Carrier 50GL 024-060, 48GP (N) 024-060, 50JZ 024-060, and 48JZ (N) 024-060 HVAC units stand out in the industry for their advanced features, energy efficiency, and robust performance. They offer a comprehensive solution for anyone seeking reliable temperature control and improved indoor air quality in a variety of settings.
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