Carrier 50JZ 024-060, 50GL 024-060 48JZ Sequence of Operation, Tion, Easy SELECT-50GL & 50JZ

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to a level which causes the Thermidistat™ to close its contacts. When the contacts close, the airflow will return to 100 percent of selected cooling airflow. To activate this mode wire in Thermidistat™ see jumper in Fig. 10.

e.DEHUMIDIFY AND SUPER DEHUMIDIFY CAPABILITIES

This model unit is capable of responding to a signal from Thermidistat™ to operate in comfort control modes such as Super Dehumidify Mode. Consult literature provided with Thermidistat™ to determine if these operating modes are available, and to see control set up instructions. No special setup or wiring of unit is required.

48JZ SEQUENCE OF OPERATION

a.CONTINUOUS FAN

(1.) Thermostat closes circuit R to G—The Blower runs at continuous fan airflow

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, Thermidistat™ closes circuits R to G, R to Y/Y2, R to O and Thermidis- tat™ 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: Thermidistat™ is capable of providing Super Dehu- midify operation mode and must be configured as outlined in its installation instructions. Consult indoor control literature to deter- mine if control is capable of providing Super Dehumidify inputs and for configuration 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 dehumidify mode, the motor delivers reduced airflow to maximize the humidity removal of the system while minimizing over cooling.

e. GAS HEATING MODE

(Occurs if outdoor temperature is below outdoor temperature change over setpoint.)

(1.) Thermostat closes circuit R to W/W1—The unit delivers the selected gas heat airflow. The IGC will control 45 sec. on delay with no airflow and 45 sec. off delay.

f. HEAT PUMP HEATING MODE

(Occurs if outdoor temperature is above outdoor temperature change over setpoint.)

(1.) Thermidistat™ closes circuit R to G and R to Y/Y2–The unit delivers selected heat pump heating airflow.

g. HEATING MODE—SUPER COMFORT HEAT OPERA-

TION

NOTE: The Thermidistat™ is capable of providing Super Com- fort Heat operation mode and must be configured as outlined in its installation instructions. The system must be installed with appro- priate outdoor temperature sensor. Consult Thermidistat™ litera- ture for configuration instructions. Consult sensor instructions for sensor installation details.

If the outdoor temperature is in the range of 12° to 40° F, the Thermidistat™ closes circuit R to Y/Y2 and opens circuit R to G. If circuit R to G is closed (24-v.), the motor will deliver airflow at the full heating requested value. If circuit R to G is open (0-v.) for maximum heating comfort, the motor delivers reduced airflow to maximize the temperature and minimize the draft effect of the heated air leaving the unit.

EASY SELECT™—50GL & 50JZ

 

 

 

 

9 PIN CONNECTOR

 

 

ICM PRINTED CIRCUIT BOARD

 

 

 

SEC1

 

SEC2

 

J1

 

 

 

 

 

 

 

 

EASY SELECTTM

 

 

 

AUX HEAT KW/CFM

 

 

 

0-30

0-20

0-10

0-5

 

 

A

1075

875

725

625

 

 

VIO

 

 

 

 

 

 

 

 

 

 

 

 

 

AC/HP SIZE

 

 

 

B

036

030

024

018

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM TYPE

 

 

DH

 

AC

HP-COMFORT

HP-EFF

 

C

ORN

 

 

 

 

R

 

AC/HP CFM ADJUST

 

W1

 

 

W2

 

NOM

 

LO

HI

 

D

 

 

Y1

BLK

 

 

 

 

 

 

 

 

 

Y/Y2

 

 

 

 

 

 

 

ON/OFF DELAY

 

 

G

 

0

30

0

J2

 

O

E

90

90

0

ENH

 

C

 

 

 

 

 

 

WHT

 

 

 

 

 

 

CONTINUOUS FAN

AUX1

HUM1

 

LO

MED

HI

YEL

F

 

 

YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUX2

HUM2

 

 

 

 

 

24VAC

 

 

HEATER/MOTOR

GRY

 

 

 

 

 

12 PIN CONNECTOR

C01033

Fig. 11—Detail of SPP Printed-Circuit Board

EASY SELECT™ CONFIGURATION TAPS FOR 50GL & 50JZ

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.

a. AUX HEAT kW/CFM—SELECT HEATER RANGE FOR SIZE OF ELECTRIC HEATER INSTALLED

Installer must select the auxiliary heat airflow approved for application with kW size heater installed. If no heater is installed, this step can be skipped. Each select pin is marked with a range of heaters for which airflow (also marked), is approved. For increased comfort, select the narrowest kW range matching the heater size, for example, 0–10 for 10–kW heater. This airflow must be greater than the minimum for CFM for electric heater application with the size system installed for safe

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Contents Installation, Start-Up, and Operating Instructions Standard Connection Special Procedures for 208-V OperationEasy SELECT-48GP Control Voltage ConnectionsWhen Thermostat is SET on Continuous FAN Time Delay ProfileHigh Airflow AIR Conditioner Accessory Installation48GP Sequence of Operation Select Options Easy SELECT-48JZHumidifier Wiring-48JZ Tion 48JZ Sequence of OperationEasy SELECT-50GL & 50JZ Page 50GL & 50JZ Sequence of Operation Humidifier Wiring for 50GL & 50JZFAN Operation ICM Fiop START-UPAutomatic CHANGE-OVER Cooling ModeGAS Heat Mode Heat Pump HeatingICM Fiop Physical Data-Unit 48GP 48GP with ICM Fiop Electrical Data LOSS-OF-CHARGE/LOW-PRESSURE SwitchSize 48GP ICM Fiop Electric Schematic-Unit 48GP Indoor Blower ICM Fiop Physical Data-Unit 48JZOutdoor Coil Indoor Coil48JZ with ICM Fiop Electrical Data ICM Fiop Electric Schematic-Unit 48JZ ICM Fiop Physical Data-Unit 50GL 50GL with ICM Fiop Electrical Data Heat Power Supply Size 50GLRange Motor ICM Fiop Electrical Schematic-50GL Compressor Quantity Type ICM Fiop Physical Data-Unit 50JZRefrigerant 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 Small Cabinet 48GP & 48JZ ICM Air Flow vs. Temperature Rise Chart48GP & 48JZ Gas Heating ICM Airflow Large Cabinet Minimum Airflow for Reliable Electric Heater Operation CFM Filter Pressure Drop Table in. wg Electric Heat Pressure Drop Table in. wgElectric Heat Pressure Drop Table in. wg Large Cabinet ICM Fiop WET Coil Pressure Drop 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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