Carrier 24ANB1 Product data

24ANB1

Infinityr 21 2---Stage Air Conditioner

with Puronr Refrigerant

2 to 5 Nominal Tons

Product Data

Carrier’s Air Conditioners with Puronr refrigerant provide a collection of features unmatched by any other family of equipment. The 24ANB1 has been designed utilizing Carrier’s Puron refrigerant. The environmentally sound refrigerant allows you to make a responsible decision in the protection of the earth’s ozone layer.

This product has been designed and manufactured to meet Energy Starr criteria for energy efficiency when matched with appropriate coil components. Refer to the combination ratings in the Product Data for system combinations that meet Energy Starr guidelines.

NOTE: Ratings contained in this document are subject to change at any time. Always refer to the AHRI directory (www.ahridirectory.org) for the most up-to-date ratings information.

INDUSTRY LEADING FEATURES / BENEFITS

Efficiency

S 14.5 - 21 SEER / 11.7 - 15 EER

S Microtube Technologyt refrigeration system

S Indoor air quality accessories available

Sound

S Sound level as low as 65 dBA

S Quiet mount split post compressor grommets

SElectronic ECM ball bearing outdoor condenser fan motor

S Forward-swept condenser fan blade S Compressor sound hood

S Laminated steel compressor mounting plate

Comfort

SSystem supports Infinityt Control or standard 2-stage thermostat controls

Reliability

SPuronr refrigerant - environmentally sound, won’t deplete the ozone layer and low lifetime service cost.

S Front-seating service valves S 2-stage scroll compressor S Internal pressure relief valve S Internal thermal overload

S Low pressure switch S High pressure switch S Filter drier

S Crankcase heater standard

S Balanced refrigeration system for maximum reliability

Controls and Diagnostics

S Infinityt control or 2-stage thermostat

STwo control wires to outdoor unit with Infinity Control (serial numbers 1213E and newer)

S Utility Interface Connection

S Enhanced diagnostics capability with Infinity Control

Durability

WeatherArmor Ultrat protection package:

S Solid, Durable sheet metal construction S Steel louver coil guard

S Baked-on, complete outer coverage, powder paint

Applications

SLong-line - up to 250 feet (76.2 m) total equivalent length, up to 200 feet (60.96 m) condenser above evaporator, or up to 80 ft. (24.38 m) evaporator above condenser (See Longline Guide for more information.)

SLow ambient (down to 0_F) with complete Infinity system.

MODEL NUMBER NOMENCLATURE

1

2

3

4

5

6

7

8

9

10

11

12

13

N

N

A

A

A/N

N

N

N

A/N

A/N

A/N

N

N

2

4

A

N

B

1

3

6

A

0

0

3

0

Product

Product

Tier

Major

SEER

Cooling

Variations

Open

Open

Voltage

Minor

Series

Family

Series

Capacity

Series

24=AC

A=RES AC

N =

B=Puron

1=21

A=Standard

0=Not

0=Not 3=208---230---1

0, 1, 2...

Infinity

SEER

Defined

Defined

Nominal

24ANB1

the environmentally sound refrigerant	Use of the AHRI Certified
	TM Mark indicates a
	manufacturer’s										This product has been designed and manufactured to
	participation in the
	program For verification										meet Energy Star criteria for energy efficiency when
											matched with appropriate coil components. However,
	of certification for individual
											proper refrigerant charge and proper air flow are critical
	products, go to										to achieve rated capacity and efficiency. Installation of
	www.ahridirectory.org.										this product should follow all manufacturing refrigerant
											charging and air flow instructions. Failure to confirm
											proper charge and air flow may reduce energy
											efficiency and shorten equipment life.

STANDARD FEATURES

	FEATURES		Unit Size --- Voltage, Series
		24---31	36---31	48---31	60---31
	Puron Refrigerant	X	X	X	X
	Maximum SEER Rating*	21.0	20.0	18.0	16.7
	2---Stage Scroll Compressor	X	X	X	X
	2 control wires to outdoor unit with Infinity Control	X	X	X	X
	(serial numbers 1213E and newer)
	Crankcase Heater	X	X	X	X
	Low Ambient Capability to 0_F (---17.8_C) w/Infinity Control	X	X	X	X
	Enhanced Diagnostics w/Infinity Control	X	X	X	X
	Utility Interface Connection	X	X	X	X
	Louvered Coil Guard	X	X	X	X
	Field Installed Filter Drier	X	X	X	X
	Front Seating Service Valves	X	X	X	X
	Internal Pressure Relief Valve	X	X	X	X
	Internal Thermal Overload	X	X	X	X
	Long Line Capability	X	X	X	X
	Low Pressure Switch	X	X	X	X
	High Pressure Switch	X	X	X	X
	Sound Blanket	X	X	X	X

X = Standard

* With approved combinations

2

REFRIGERANT PIPING LENGTH LIMITATIONS

Liquid Line Sizing and Maximum Total Equivalent Lengths{ for Cooling Only Systems with Puronr Refrigerant:

The maximum allowable length of a residential split system depends on the liquid line diameter and vertical separation between indoor and outdoor units.

See Table below for liquid line sizing and maximum lengths :

Maximum Total Equivalent Length

Outdoor Unit BELOW Indoor Unit

			Liquid			AC with Puron Refrigerant Maximum Total Equivalent Length{: Outdoor unit BELOW Indoor
	Size	Liquid Line	Line								Vertical Separation ft (m)
		Connection	Diam.
				0	5	6	10	11	20	21	30	31	40	41	50	51	60	61	70	71	80
			w/TXV	(0---	1.5)	(1.8---	3.0)	(3.4---	6.1)	(6.4---	9.1)	(9.4---	12.2)	(12.5---	15.2)	(15.5---	18.3)	(18.6---	21.3)	(21.6---	24.4)
	024		1/4	75		75		75		50		50		--- ---		--- ---		--- ---		--- ---
	AC with	3/8	5/16	250*		250*		250*		250*		250*		225*		175		125		100
	Puron
			3/8	250*		250*		250*		250*		250*		250*		250*		250*		250*
	036		5/16	175		150		150		100		100		100		75				--- ---
	AC with	3/8																--- ---
			3/8	250*		250*		250*		250*		250*		250*		250*		250*		250*
	Puron
	048
	AC with	3/8	3/8	250*		250*		250*		250*		250*		250*		230		160		--- ---
	Puron
	060
	AC with	3/8	3/8	250*		250*		250*		225*		190		150		110		--- ---		--- ---
	Puron

* Maximum actual length not to exceed 200 ft (61 m)

{Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.

------ = outside acceptable range

Maximum Total Equivalent Length

Outdoor Unit ABOVE Indoor Unit

			Liquid		AC with Puron Refrigerant Maximum Total Equivalent Length{: Outdoor unit ABOVE Indoor
	Size	Liquid Line	Line				Vertical Separation ft (m)
		Connection	Diam.
				25	26---50	51---75	76---100	101---125	126---150	151---175	176---200
			w/TXV	(7.6)	(7.9---15.2)	(15.5---22.9)	(23.2---30.5)	(30.8---38.1)	(38.4---45.7)	(46.0---53.3)	(53.6---61.0)
	024		1/4	100	125	175	200	225*	250*	250*	250*
	AC with	3/8	5/16	250*	250*	250*	250*	250*	250*	250*	250*
	Puron
			3/8	250*	250*	250*	250*	250*	250*	250*	250*
	036		5/16	225*	250*	250*	250*	250*	250*	250*	250*
	AC with	3/8
			3/8	250*	250*	250*	250*	250*	250*	250*	250*
	Puron
	048
	AC with	3/8	3/8	250*	250*	250*	250*	250*	250*	250*	250*
	Puron
	060
	AC with	3/8	3/8	250*	250*	250*	250*	250*	250*	250*	250*
	Puron

* Maximum actual length not to exceed 200 ft (61 m)

{ Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.

REFRIGERANT CHARGE ADJUSTMENTS

	Liquid Line Size	Puron Charge oz/ft (g/m)
	3/8	0.60 (17.74)
		(Factory charge for lineset = 9 oz / 266.16 g)
	5/16	0.40 (11.83)
	1/4	0.27 (7.98)

Units are factory charged for 15 ft (4.6 m) of 3/8” liquid line. The factory charge for 3/8” lineset 9 oz.(266.16 g). When using other length or diameter liquid lines, charge adjustments are required per the chart above.

Charging Formula:

[(Lineset oz/ft x total length) – (factory charge for lineset)] = charge adjustment

Example 1: System has 15 ft of line set using existing 1/4“ liquid line. What charge adjustment is required? Formula: (.27 oz/ft x 15ft) – (9 oz) = (-4.95) oz.

Net result is to remove 4.95 oz of refrigerant from the system

Example 2: System has 45 ft of existing 5/16” liquid line. What is the charge adjustment? Formula: (.40 oz/ft. x 45ft) – (9 oz.) = 9 oz.

Net result is to add 9 oz of refrigerant to the system

3

24ANB1

24ANB1

LONG LINE APPLICATIONS

An application is considered Long Line, when the refrigerant level in the system requires the use of accessories to maintain acceptable refrigerant management for systems reliability. See Accessory Usage Guideline table for required accessories. Defining a system as long line depends on the liquid line diameter, actual length of the tubing, and vertical separation between the indoor and outdoor units.

For Air Conditioner systems, the chart below shows when an application is considered Long Line.

AC WITH PURONr REFRIGERANT LONG LINE DESCRIPTION ft (m)

Beyond these lengths, long line accessories are required

	Liquid Line Size	Units On Same Level	Outdoor Below Indoor	Outdoor Above Indoor
	1/4	No accessories needed within allowed	No accessories needed within allowed	175 (53.3)
		lengths	lengths
	5/16	120 (36.6)	50 (15.2) vertical or 120 (36.6) total	120 (36.6)
	3/8	80 (24.4)	35 (10.7) vertical or 80 24.4) total	80 (24.4)

Note: See Long Line Guideline for details

VAPOR LINE SIZING AND COOLING CAPACITY LOSS

Acceptable vapor line diameters provide adequate oil return to the compressor while avoiding excessive capacity loss. The suction line diameters shown in the chart below are acceptable for AC systems with Puron refrigerant:

Vapor Line Sizing and Cooling Capacity Losses — Puronr Refrigerant 2-Stage Air Conditioner Applications

	Unit	Maximum	Vapor Line				Cooling Capacity Loss (%)
		Liquid					Total Equivalent Line Length ft. (m)
	Nominal	Line	Diameters
	Size (Btuh)	Diameters	(In.) OD	26---50	51---80	81---100	101---125	126---150	151---175	176---200	201---225	226---250
		(In. OD)		(7.9---15.2)	(15.5---24.4)	(24.7---30.5)	(30.8---38.1)	(38.4---45.7)	(46.0---50.3)	(53.6---60.0)	(61.3---68.6)	(68.9---76.2)
	024		5/8	0	1	1	2	3	3	4	4	5
	2---Stage
		3/8
	Puron		3/4	0	0	0	0	1	1	1	1	1
	AC
	036		5/8	1	2	4	5	6	7	9	10	11
	2---Stage	3/8	3/4	0	0	1	1	2	2	3	3	4
	Puron
	AC		7/8	0	0	0	0	1	1	1	1	2
	048		3/4	1	2	2	3	4	5	6	7	7
	2---Stage
		3/8	7/8	0	1	1	2	2	2	3	3	3
	Puron
	AC		1---1/8	0	0	—	—	—	—	—	—	—
	060		3/4	1	2	4	5	6	7	9	10	11
	2---Stage
		3/8	7/8	0	1	2	2	3	4	4	5	5
	Puron
	AC		1---1/8	0	0	0	1	1	1	1	1	1
	Applications in	this area may	be long line and may have height restrictions. See the Residential Piping and Long Line Guideline.
	— Applications in this area are not recommended due to insufficient oil return

PHYSICAL DATA

UNIT SIZE --- VOLTAGE, SERIES	24---31	36---31		48---31	60---31
Operating Weight lb (kg)	282 (127.9)	312 (141.5)		335 (152.0)	336 (152.4)
Shipping Weight lb (kg)	324 (147.0)	357 (161.9)		381 (172.8)	381 (172.8)
Compressor Type		2---Stage Scroll
REFRIGERANT		Puron (R---410A)
Control		TXV (Puron Hard Shutoff)
Charge lb. (kg)	13.34 (6.05)	13.66 (6.20)		13.53 (6.14)	14.33 (6.50)
COND FAN		Forward Swept Propeller Type, Direct Drive
Air Discharge			Vertical
Air Qty (CFM)	3040 / 3637	3124 / 3700		3703 / 4309	4209 / 4668
Motor HP	1/5	1/5		1/5	1/5
Motor RPM	628 / 752	582 / 689		659 / 765	742 / 828
COND COIL
Face Area (sq. ft.)	25.12	30.15		30.15	30.15
Fins per In.	20	20		20	20
Rows	2	2		2	2
Circuits	8	8		8	8
VALVE CONNECT. (In. ID)
Vapor	7/8	7/8		7/8	7/8
Liquid			3/8
REFRIGERANT TUBES* (In. OD)
Vapor (0---80 Ft Tube Length)	7/8	7/8		1---1/8	1---1/8
Liquid (0---80 Ft Tube Length)			3/8

*Units are rated with 25 ft (7.6 m) of lineset length. See Vapor Line Sizing and Cooling Capacity Loss table when using other sizes and lengths of lineset.

4

ELECTRICAL DATA

	Unit Size ---								MIN	MIN	MAX	MAX	MAX
		V/PH	OPER VOLTS*		COMPR		FAN	MCA	WIRE	WIRE	LENGTH	LENGTH	FUSE** or
	Voltage,								SIZE{	SIZE{	ft. (m)}	ft. (m)}	CKT BRK
	Series
													AMPS
			MIN	MAX	LRA	RLA	FLA		60 C	75 C	60 C	75 C
	24---31				58.3	11.1	1.8	15.7	14	14	50 (15.2)	48 (14.6)	25
	36---31	208---230/1	253	197	83.0	15.3	2.0	21.1	12	12	59 (18.0)	56 (17.1)	30
	48---31				104.0	21.2	2.7	29.2	10	10	68 (20.7)	65 (19.8)	40
	60---31				152.9	28.8	2.7	38.7	8	8	80 (24.4)	76 (23.2)	60

* Permissible limits of the voltage range at which the unit will operate satisfactorily

{If wire is applied at ambient greater than 30_C, consult table 310---16 of the NEC (NFPA 70). The ampacity of non---metallic---sheathed cable (NM), trade name ROMEX, shall be that of 60_C conditions, per the NEC (NFPA 70) Article 336---26. If other than uncoated (no---plated), 60 or 75_C insulation, copper

wire (solid wire for 10 AWG or smaller, stranded wire for larger than 10 AWG) is used, consult applicable tables of the NEC (NFPA 70).

}Length shown is as measured one way along wire path between unit and service panel for voltage drop not to exceed 2%.

**Time---Delay fuse.

FLA --- Full Load Amps LRA --- Locked Rotor Amps

MCA --- Minimum Circuit Amps RLA --- Rated Load Amps

NOTE: Control circuit is 24---V on all units and requires external power source. Copper wire must be used from service disconnect to unit. All motors/compressors contain internal overload protection.

Complies with 2010 requirements of ASHRAE Standards 90.1

A-WEIGHTED SOUND POWER (dBA)

	Unit Size ---	Standard Rating			Typical Octave Band Spectrum (dBA, without tone adjustment)
	Voltage, Series		(dBA)	125	250	500	1000	2000	4000	8000
	24---31	71	--- High Stage	49.5	56.0	60.5	67.5	58.0	53.5	53.0
		65	--- Low Stage	47.0	52.0	56.5	60.5	55.0	50.0	49.0
	36---31	68	--- High Stage	47.5	53.0	60.0	60.0	56.0	52.0	51.0
		66	--- Low Stage	46.5	54.5	56.0	56.5	53.0	50.0	48.0
	48---31	69	--- High Stage	49.0	61.5	62.0	62.0	59.5	54.5	49.5
		66	--- Low Stage	48.5	59.5	59.0	59.5	56.5	51.5	48.5
	60---31	69	--- High Stage	50.8	57.5	60.5	63.0	59.5	57.5	54.5
		68	--- Low Stage	48.0	56.0	59.0	62.0	57.5	55.5	52.0

NOTE: Tested in accordance with AHRI Standard 270---08. (Not listed with AHRI).

CHARGING SUBCOOLING (TXV-TYPE EXPANSION DEVICE)

UNIT SIZE---VOLTAGE, SERIES	REQUIRED SUBCOOLING _F (_C)
24---31	10 (5.6)
36---31	11 (6.1)
48---31	12 (6.7)
60---31	14 (7.8)

ACCESSORY CONTROLS

	PART NUMBER	DESCRIPTION
	SYSTXCCITN01	Infinity Touch Control (non---Wi---Fi)
	SYSTXCCITW01	Infinity Touch Control with Wi---Fi & Wireless Access Point
	SYSTXCC4ZC01	Infinity 4---Zone Damper Control Module (Wall---mounted control for a four---zone system.)
	SYSTXCCSMS01	Infinity Smart Sensor (Optional wall control used to monitor temperature and/or fan control in an individual zone.)
	SYSTXCCRRS01	Infinity Remote Room Sensor (Monitors temperature in an individual zone.)
	SYSTXCCRCT01 or	Infinity System Remote Access Module (Hardware for wireless access and control via internet.)
	SYSTXCCRWF01
	SYSTXCCNIM01	Infinity Network Interface Module (Connects Heat Recovery and Energy Recovery Ventilators on non---zoning applications.)

5

24ANB1

ACCESSORIES

ORDER NUMBER

DESCRIPTION

24---31

36---31

48---31

60---31

KAALS0201LLS

LIQUID LINE SOLENOID VALVE KIT

X

X

X

X

KSAHS2501AAA*

HARD START KIT

X

X

KSAHS2801AAA*

HARD START KIT

X

X

KSASF0101AAA

SUPPORT FEET

X

X

X

X

x = Accessory

* Not backward compatible to previous series

ACCESSORY USAGE GUIDELINE

REQUIRED FOR

REQUIRED FOR SEA COAST

LOW---AMBIENT COOLING

REQUIRED FOR LONG LINE

ACCESSORY

APPLICATIONS

APPLICATIONS

APPLICATIONS*

(Within 2 miles/3.22 km)

(Below 55 F/12.8_C)

Compressor Start Assist Kit

No

No

No

Crankcase Heater

Yes

Yes

No

(standard on some units)

(standard on some units)

Evaporator Freeze Protection

Standard with Infinity Control

No

No

Liquid---Line Solenoid Valve

No

No

No

24ANB1

Low---Ambient Control

Standard with Infinity Control

No

No

Puron Refrigerant Balance Port Hard---

Yes{

Yes{

Yes{

ShutOff TXV

Support Feet

Recommended

No

Recommended

Winter Start Control

Standard with Infinity Control

No

No

*For tubing set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 35 ft. (10.7 m) vertical differential (total equivalent length), refer to the Long Line Guideline—Air Conditioners and Heat Pumps using Puron® Refrigerant.

{Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.

Accessory Description and Usage (Listed Alphabetically)

1. Compressor Start Assist - Capacitor and Relay

3. Support Feet

Start capacitor and relay gives a ”hard” boost to compressor motor at each start up.

Usage Guideline:

Not required on this unit since compressor always starts unloaded.

Available if required by local codes.

2. Crankcase Heater

An electric resistance heater which mounts to the base of the compressor to keep the lubricant warm during off cycles. Improves compressor lubrication on restart and minimizes the chance of liquid slugging.

Usage Guideline:

Required in low ambient cooling applications. Required in long line applications.

Suggested in all commercial applications.

Four stick-on plastic feet that raise the unit 4 in. (101.6 mm) above the mounting pad. This allows sand, dirt, and other debris to be flushed from the unit base, minimizing corrosion.

Usage Guideline:

Suggested in the following applications: Coastal installations.

Windy areas or where debris is normally circulating. Rooftop installations.

For improved sound ratings.

4. Thermostatic Expansion Valve (TXV)

A modulating flow-control valve which meters refrigerant liquid flow rate into the evaporator in response to the superheat of the refrigerant gas leaving the evaporator.

Kit includes valve, adapter tubes, and external equalizer tube. Hard shut off types are available.

NOTE: When using a hard shut off TXV with single phase reciprocating compressors, a Compressor Start Assist Capacitor and Relay is required.

Usage Guideline:

Required to achieve AHRI ratings in certain equipment combinations. Refer to combination ratings.

Hard shut off TXV or LLS required in air conditioner long line applications.

6