York AVC24BX21 User Manual

TECHNICAL GUIDE
SINGLE PIECE VARIABLE SPEED ECM
COMMUNICATING AIR HANDLERS
FOR USE WITH SPLIT-SYSTEM
COOLING & HEAT PUMPS
MODELS: AVC SERIES
Due to continuous product improvement,
specifications are subject to change without notice.
Visit us on the web at:
www.upgnet.com and www.york.com
A
dditional rating information can be found at:
www.ahridirectory.org
WARRANTY SUMMARY
Standard 5-year limited parts warranty.
Extended 10-year limited parts warranty when product is
registered online within 90 days of purchase for replacement
or closing for new home construction.
®
®
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
5151060-YTG-F-1116
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 can use a TXV to
provide our customers with the optimum performance and
refrigerant control. Single piece air handlers are available with
“Flex-coils” (without a factory installed metering device). For
added flexibility, an R-22 or R-410A TXV or piston must be field
installed to meet the requirement of the desired refrigerant.
Some coil models available with factory installed TXV.
FEATURES
RC
2
- Rigid Case Construction interior endoskeleton for
structural support, smooth side, and locks in insulation.
Powder-painted - G30 galvanized steel case provide a coated
edge that resists corrosion and rust creep.
MaxAlloy
TM
Coil - Long life aluminum coils built to deliver
lasting performance, efficiency and reliability.
Quality Construction - Structural components are made of
Aluminum or G90 galvanized steel to prevent corrosion.
Improved Insulation Design - Single piece with no external
screws to reduce thermal transmission paths to prevent
sweating. Foil faced insulation for ease of cleaning.
Thermostatic Expansion Valve - The accessory chatleff style
TXV provides easy installation to convert the indoor coil to the
required refrigerant that does not require brazing to replace or
install. Some models are available with factory installed TXV.
Case Depth - These models have 20.5” casing which provide
ease of attic access and tight applications.
Thermoset Drain Pan - Low retention and positive slope for
drainage to reduce potential mold or contaminants.
Factory Sealed - Achieves 2% or less total airflow leakage rate
at duct leakage test conditions in positive and negative
pressure for system airflow verification.
Enhanced Filter Rack - All models have integrated 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.
Blowers - All models use direct-drive, variable speed ECM
motors.

York AVC24BX21 Specifications

General

Model Number	AVC24BX21
Category	Air Handler
Cooling Capacity	24, 000 BTU/h
Heating Capacity	24, 000 BTU/h
Voltage	208/230V
Phase	1
Refrigerant	R-410A
Cabinet Construction	Galvanized steel
Maximum External Static Pressure	0.5 in. wg
Filter Type	1-inch throwaway

Summary

Key Product Features

Nomenclature and Model Identification

Unit Dimensions and Connections

Model Dimension Table

Provides specific dimensions (A-G) for various AVC series air handler models.

Coil Technical Specifications

Cooling Capacity Data

Physical and Electrical Data (Cooling Only)

Electrical Data (Cooling Only)

Motor FLA, Circuit Ampacity, and MOP

Details Full Load Amps (FLA), Minimum Circuit Ampacity, and MOP for models.

Electric Heat - Minimum Fan Speed

Heat Kit Minimum Fan Speed Compatibility

Indicates compatibility of heat kits with different air handler models and speed settings.

Electric Heat Performance Data

Heat Performance for 1PH and 3PH

Provides kW and MBH performance data for 1-phase and 3-phase electric heat kits.

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

Minimum Circuit Ampacity and MOP

Details MCA and MOP requirements for single source 208/230V, 1-phase electric heat.

Electrical Data for Single Source Power Supply (208/230-1-60) Continued

Continued MCA and MOP Data

Continues MCA and MOP requirements for single source 208/230V, 1-phase electric heat.

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

Multi-Source MCA and MOP

Details MCA and MOP for multi-source 208/230V, 1-phase electric heat applications.

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

3-Phase Single Source MCA and MOP

Details MCA and MOP for single source 208/230V, 3-phase electric heat applications.

Power Wiring - Line Connections

1 Phase Electric Heat Options

Diagrams for single and multi-source power wiring for 1-phase electric heat.

3 Phase Electric Heat Options

Diagrams for single and multi-source power wiring for 3-phase electric heat.

Typical Thermostat Connection

Cooling Models Wiring

Wiring diagrams for cooling-only and cooling with electric heat applications.

Two-Stage Heat Pump Wiring

Wiring diagrams for two-stage heat pump systems.

Communicating AC or HP Wiring

Wiring diagrams for systems using communicating AC or HP units.

Air Flow Data

High/Low Speed Cooling and Heat Pump CFM

Tables showing airflow (CFM) for cooling and heat pump modes at various settings.

High/Low Speed Heat CFM

Tables showing airflow (CFM) for heating modes at various settings.