York AHR24B3XH21 User Manual

SINGLE PIECE AIR HANDLERS
FOR USE WITH SPLIT-SYSTEM
COOLING & HEAT PUMPS
MODELS: AHR18 THRU 60*
Due to continuous product improvement,
specifications are subject to change without notice.
Visit us on the web at:
www.upgnet.com
Additional rating information can be found at:
www.ahridirectory.org
WARRANTY
Standard 5-year limited parts warranty.
Extended 10-year limited parts warranty when product is regis-
tered online within 90 days of purchase for replacement or
closing for new home construction.
ISO 9001
Certified Quality
Management System
TECHNICAL
GUIDE
TECHNICAL
GUIDE
1055361-BTG-D-0514
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
DESCRIPTION
This fan coil line offers the ultimate in application flexibility. This unit
may be used for upflow, downflow, horizontal right, or horizontal left
applications.
All JCI Unitary Products air handlers and coils use a TXV to provide our
customers with the optimum performance and refrigerant control. Air
handlers are shipped with “Flex-coils” without a factory installed meter-
ing device. For added flexibility, an R-22 or R-410A TXV or orifice can
be field installed to meet your refrigerant choice.
FEATURES
Thermal Expansion Valve - Provides the ultimate refrigerant con-
trol required for today’s high efficient product. The UPG bolt-on TXV
provides the added flexibility to convert the air handler to the required
refrigerant. The UPG TXV is a true bolt-on which does not require braz-
ing to replace or install.
Insulated Cabinet - All air handler cabinets are thermally insulated
with 3/4” foil faced insulation to prevent sweating.
Factory Sealed - Achieves 2% or less total airflow leakage rate at
duct blaster field test conditions for system airflow verification.
Durable Finish Inside and Out - Air handler casings are made of
pre-painted galvanized steel which provides a better paint to steel bond
that resists corrosion and rust creep. All internal coil sheet metal parts
are made of G60 galvanized or prepainted G30 galvanized.
Filters - All models have internal filter racks provided for use with 1”
thick standard size filters.
Electric Heat Kits - 6HK series of field installed electric heat kits are
available for installation friendly and easy service applications.

York AHR24B3XH21 Specifications

General

SEER Rating	16
Voltage	208/230V
Phase	1
Refrigerant	R-410A
Energy Efficiency Ratio (EER)	12.5
Cooling Capacity	24000 BTU/h
Power Supply	1Ph, 60Hz
Net Weight (Indoor Unit)	12 kg

Summary

Single Piece Air Handler Overview

Product Description

Details application flexibility for upflow, downflow, and horizontal configurations.

Key Product Features

Highlights features like TXV control, insulated cabinet, factory sealing, durable finish, and filter racks.

Dimensions and Duct Connections

Unit Dimensions

Table detailing height, width, and depth for various air handler models.

Coil Technical Data

Provides information on coil size, face area, rows, fins, tube geometry, and fin type.

Cooling Capacity Data

Application Factors

Application Factors

Adjusts system airflow (CFM) based on capacity factors for different operating percentages.

Physical and Electrical Data (Cooling)

Physical and Electrical Data (Cooling)

Details blower size, motor HP, voltage, amps, and filter requirements for cooling operations.

Power Conversion Factors

Provides conversion factors for kW and MBH based on distribution voltage.

Electrical Data (Cooling Only)

Electric Heat Fan Speed Requirements

Specifies minimum fan speed settings for electric heat kits across various air handler models.

Electric Heat Performance Data

Details kW and MBH output for electric heat kits at different voltage and staging configurations.

Electrical Data (Single Source 208/230-1-60)

Electrical Data (Multi-Source 208/230-1-60)

Electrical Data (Single Source 208/230-3-60)

Electrical Data (Multi-Source 208/230-3-60)

Typical Applications

Typical Applications

Illustrates common installation configurations like upflow, downflow, and horizontal.

Accessories

Information on available accessories such as TXV kits and electric heater kits.

Installation Limitations

Outlines wiring, installation, and voltage limitations for safe and efficient operation.

Typical Thermostat Connections

Cooling Only Wiring

Wiring diagram for thermostat connections in cooling-only applications.

Cooling with Electric Heat (Low kW) Wiring

Wiring diagram for thermostat connections with electric heat (10 kW and below).

Heat Pump with Electric Heat (Low kW) Wiring

Wiring diagram for thermostat connections with heat pump and electric heat (10 kW and below).

Cooling with Electric Heat (High kW) Wiring

Wiring diagram for thermostat connections with electric heat (13 kW and above).

Heat Pump with Electric Heat (High kW) Wiring

Wiring diagram for thermostat connections with heat pump and electric heat (13 kW and above).

Heater Kit Wiring Example

Illustrates the wiring connections for a specific 6HK series electric heat kit.

Air Flow Data

Air Flow Data (Continued)