24ANB1
Infinityr 21 2---Stage Air Conditioner
with Puronr Refrigerant
2to5NominalTons
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
14.5 -- 21 SEER / 11.7 -- 15 EER
S
S Microtube Technologyt refrigeration system
S Indoor air quality accessories available
Sound
Sound level as low as 65 dBA
S
S Quiet mount split post compressor grommets
S Electronic ECM ball bearing outdoor condenser fan
motor
S Forward--swept condenser fan blade
S Compressor sound hood
S Laminated steel compressor mounting plate
Comfort
System supports Infinityt Control or standard 2--stage
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
Infinityt control or 2--stage thermostat
S
S Two 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
Long--line -- up to 250 feet (76.2 m) total equivalent
S
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.)
S Low ambient (down to 0_F) with complete Infinity
system.
Page 2
MODEL NUMBER NOMENCLATURE
123
NNA
4
A
567
A/NNNA/NA/NA/NNN
24ANB1 3
Product
Series
24=ACA=RES ACN =
Product
Family
TierMajor
Series
B=Puron1=21
Infinity
Nominal
the environmentally sound refrigerant
24ANB1
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
SEERCooling
Capacity
SEER
8
91011 12 13
N
6
A00 3 0
VariationsOpenOpenVoltageMinor
A=Standard 0=Not
Defined
0=Not
3=208--- 230 --- 1
Defined
This produ ct has been design ed an d manufact ured to
meet Energy S tar criteria for energy efficiency when
matched with appropriate coil components. However,
proper refr igerant ch arge and proper air flow are cri tical
to achieve rated capacity and efficiency. Installation of
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 equ ipment life.
Series
0, 1, 2...
STANDARD FEATURES
FEATURES
24---3136---3148---3160---31
Puron RefrigerantXXXX
Maximum SEER Rating*21.020.018.016.7
2-- -Stage Scroll CompressorXXXX
2 control wires to outdoor unit with Infinity Control
(serial numbers 1213E and newer)
XXXX
Crankcase HeaterXXXX
Low Ambient Capability to 0_F ( --- 17.8_C) w/Infinity ControlXXXX
Enhanced Diagnostics w/Infinity ControlXXXX
Utility Interface ConnectionXXXX
Louvered Coil GuardXXXX
FieldInstalledFilterDrierXXXX
Front Seating Service ValvesXXXX
Internal Pressure Relief ValveXXXX
Internal Thermal OverloadXXXX
Long Line CapabilityXXXX
Low Pressure SwitchXXXX
High Pressure SwitchXXXX
Unit Size --- Voltage, Series
Sound BlanketXXXX
X=Standard
* With approved combinations
2
Page 3
REFRIGERANT PIPING LENGTH LIMITATIONS
Liquid Line Sizing and Maximum Total Equivalent Lengths
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
Size
024
AC with
Puron
036
AC with
Puron
048
AC with
Puron
060
AC with
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.
--- --- = o u t s i d e a c c e p t a b l e r a n g e
Liquid Line
Connection
3/8
3/8
3/83/8250*250*250*250*250*250*230160--- ---
3/83/8250*250*250*225*190150110--- ------ ---
Line
Diam.
w/TXV
1/47575755050--- ------ ------ ------ ---
5/16250*250*250*250*250*225*175125100
3/8250*250*250*250*250*250*250*250*250*
5/1617515015010010010075--- ------ ---
3/8250*250*250*250*250*250*250*250*250*
(0---1.5)
AC with Puron Refrigerant Maximum Total Equivalent Length{: Outdoor unit BELOW Indoor
0 --- 5
6 --- 1 0
(1.8---3.0)
11---20
(3.4---6.1)
{
for Cooling Only Systems with Puronr Refrigerant:
Vertical Separation ft (m)
21---30
(6.4---9.1)
31---40
(9.4---12.2)
41---50
(12.5---15.2)
51---60
(15.5---18.3)
61---70
(18.6---21.3)
71---80
(21.6---24.4)
24ANB1
Maximum Total Equivalent Length
Outdoor Unit ABOVE Indoor Unit
Liquid
Size
024
AC with
Puron
036
AC with
Puron
048
AC with
Puron
060
AC with
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.
Liquid Line
Connection
3/8
3/8
3/83/8250*250*250*250*250*250*250*250*
3/83/8250*250*250*250*250*250*250*250*
Line
Diam.
w/TXV
1/4100125175200225*250*250*250*
5/16250*250*250*250*250*250*250*250*
3/8250*250*250*250*250*250*250*250*
5/16225*250*250*250*250*250*250*250*
3/8250*250*250*250*250*250*250*250*
AC with Puron Refrigerant Maximum Total Equivalent Length{: Outdoor unit ABOVE Indoor
25
(7.6)
26---50
(7.9---15.2)
51---75
(15.5---22.9)
Vertical Separation ft (m)
76---100
(23.2---30.5)
101---125
(30.8---38.1)
126---150
(38.4---45.7)
151---175
(46.0---53.3)
176---200
(53.6---61.0)
REFRIGERANT CHARGE ADJUSTMENTS
Liquid Line SizePuron Charge oz/ft (g/m)
3/8
5/160.40 (11.83)
1/40.27 (7.98)
(Factory charge for lineset = 9 oz / 266.16 g)
0.60 (17.74)
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
Page 4
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 SizeUnits On Same LevelOutdoor Below IndoorOutdoor Above Indoor
1/4
5/16120 (36.6)50 (15.2) vertical or 120 (36.6) total120 (36.6)
3/880 (24.4)35 (10.7) vertical or 80 24.4) total80 (24.4)
Note: SeeLongLineGuidelinefordetails
No accessories needed within allowed
lengths
No accessories needed within allowed
lengths
175 (53.3)
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:
24ANB1
Nominal
Size (Btuh)
2 --- S t a g e
Puron
2 --- S t a g e
Puron
2 --- S t a g e
Puron
2 --- S t a g e
Puron
Applications in th is area may be long line and may have height restrictions. See the Residential Piping and Long Line Guideline.
— Appl ications in this area are not recommended due to in sufficient oil return
Vapor Line Sizing and Cooling Capacity Losses — Puronr Refrigerant 2--Stage Air Conditioner Applications
Unit
024
AC
036
AC
048
AC
060
AC
Maximum
Liquid
Line
Diameters
(In. OD)
3/8
3/8
3/8
3/8
Vapo r Line
Diameters
(In.) OD
5/8011233445
3/4000011111
5/812456791011
3/4001122334
7/8000011112
3/4122345677
7/8011222333
1 --- 1 / 800———————
3/412456791011
7/8012234455
1 --- 1 / 8000111111
26--- 50
(7.9---15.2)
51--- 80
(15.5---24.4)
81--- 100
(24.7---30.5)
Cooling Capacity Loss (%)
Total Equivalent Line Length ft. (m)
101--- 125
(30.8---38.1)
126--- 150
(38.4---45.7)
151--- 175
(46.0---50.3)
176--- 200
(53.6---60.0)
201--- 225
(61.3---68.6)
PHYSICAL DATA
UNIT SIZE --- VOLTAGE, SERIES24 - -- 3136--- 3148- -- 3160--- 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 Type2 --- S t a g e S c r o l l
REFRIGERANTPuron (R --- 410A)
COND FANForward Swept Propeller Type, Direct Drive
Air D ischargeVertical
Air Qty (CFM)3040 / 36373124 / 37003703 / 43094209 / 4668
Motor HP1/51/51/51/5
Motor RPM628 / 752582 / 689659 / 765742 / 828
COND COIL
Face Area (sq. ft.)25.1230.1530.1530.15
Fins per In.20202020
Rows2222
Circuits8888
VALVE CONNECT.(In.ID)
Vapor7/87/87/87/8
Liquid3/8
REFRIGERANT TUBES* (In. OD)
Vapor (0---80 Ft Tube Length)7/87/81 --- 1 / 81 --- 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.
* 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 un coated (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%.
* * T i m e --- D e l a y f u s e .
FLA --- F u l l L o a d A m p s
LRA --- L o c k e d R o t o r A m p s
MCA --- Minimum Circuit Amps
RLA ---RatedLoadAmps
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
V/PH
208---230/1253197
OPER VOLTS*COMPRFAN
MINMAXLRARLAFLA60 C75 C60 C75 C
58.311.11.815.7141450 (15.2)48 (14.6)25
MCA
MIN
WIRE
SIZE{
MIN
WIRE
SIZE{
MAX
LENGTH
ft. (m)}
MAX
LENGTH
ft. (m)}
MAX
FUSE** or
CKT BRK
AMPS
A--WEIGHTED SOUND POWER (dBA)
U n i t S i z e ---
Voltage, Series
24--- 31
36--- 31
48--- 31
60--- 31
NOTE: Tested in accordance with AHRI Standard 270 --- 08. (Not listed with AHRI).
Standard Rating
(dBA)
7 1 --- H ig h S t a g e49.556.060.567.558.053.553.0
6 5 --- L o w S t a g e47.052.056.560.555.050.049.0
6 8 --- H ig h S t a g e47.553.060.060.056.052.051.0
6 6 --- L o w S t a g e46.554.556.056.553.050.048.0
6 9 --- H ig h S t a g e49.061.562.062.059.554.549.5
6 6 --- L o w S t a g e48.559.559.059.556.551.548.5
6 9 --- H ig h S t a g e50.857.560.563.059.557.554.5
6 8 --- L o w S t a g e48.056.059.062.057.555.552.0
1252505001000200040008000
Typical Octave Band Spectrum (dBA, without tone adjustment)
24ANB1
CHARGING SUBCOOLING (TXV--TYPE EXPANSION DEVICE)
UNIT SIZE --- VOLTAGE, SERIESREQUIRED SUBCOOLING _F(_C)
x = Accessory
* Not backward compatible to previous series
DESCRIPTION24---3136-- -3148-- -3160 ---31
ACCESSORY USAGE GUIDELINE
REQUIRED FOR
ACCESSORY
Compressor Start Assist KitNoNoNo
Crankcase Heater
Evaporator Freeze ProtectionStandard with Infinity ControlNoNo
Liquid---Line Solenoid ValveNoNoNo
Low--- Ambient ControlStandard with Infinity ControlNoNo
Puron Refrigerant Balance Port Hard ---
24ANB1
* For tubing set lengths between 80 a nd 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.
ShutOff TXV
Support FeetRecommendedNoRecommended
Winter Start ControlStandard with Infinity ControlNoNo
L O W --- A M B I E N T C O O L I N G
APPLICATIONS
(Below 55F/12.8_C)
Ye s
(standard on some units)
Ye s {
REQUIRED FOR LONG LINE
APPLICATIONS*
Ye s
(standard on some units)
Ye s {
REQUIRED FOR SEA COAST
APPLICATIONS
(Within 2 miles/3.22 km)
Accessory Description and Usage (Listed Alphabetically)
1. Compressor Start Assist -- Capacitor and Relay
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.
3. Support Feet
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.
No
Ye s {
6
Page 7
24ANB1
DIMENSIONS -- ENGLISH
7
Page 8
24ANB1
DIMENSIONS -- SI
8
Page 9
Wall
6”
A07833
(152.4)
24”
Wall
Clearances (various examples)
Service
12”
(304.8)
6”
Wall
(152.4 mm)
12”
(304.8)
12”
(304.8)
12”
(304.8)
Wall
24”
(609.6)
24”
(609.6)
24”
(609.6)
Service
Service
Service
24ANB1
24”
(609.6)
24”
(609.6)
CLEARANCES
24”
(609.6)
Service
24”
Note: Numbers in ( ) = mm
(609.6)
IMPORTANT: When installing multiple units in an alcove, roof well, or partially enclosed area, ensure there is adequate ventilation to prevent re--circulation of discharge air.
9
Page 10
TESTED AHRI COMBINATION RATINGS*
NOTE: Ratings contained in this document are subject to change at any time.
For AHRI ratings certificates, please refer to the AHRI directory www.ahridirectory.org
Additional ratings and system combinations can be accessed via the Carrier database at:
For performance data at specific application &/or design conditions with various indoor unit combinations, the equipment
performance calculator can be accessed at :
http://rpmob.wrightsoft.com/
www.MyCarrierRatings.com
Model NumberINDOOR MODEL
24ANB124A**31FE5ANB004266002400021.015.0800800
24ANB136A**31FE5ANB004360003320020.014.71200924
24ANB148A**31FE4ANB006480004000018.013.514001120
24ANB160A**31FE4ANB006580004650016.713.216251300
* AHRI = Air Conditioning, Heating & Refrigeration Institute
EER —
SEER — Seasonal Energy Efficiency Ratio
TDR — Time---DelayRelay. Inmostcases,only1methodshouldbeusedtoachieveTDRfunction.Usingmorethan1methodinasystemmaycausedegradationinperformance.
UI— User Interface
NOTES:
24ANB1
1. Ratings are net values reflecting the effects of circulating fan motor heat. Supplemental electric heat is not included.
2. Tested outdoor/indoor combinations have been tested in accordance with DOE test procedures for central air conditioners. Ratings for other combinations are determined under DOE
3. Determine actual CFM values obtainable for your system by referring to fan performance data in fan coil or furnace coil literature.
4. Do not apply with capillary tube coils as performance and reliability are affected.
Energy Efficiency Ratio --- 80_F(26.6_C) indoor db/67_F(19.4_C) indoor wb & 95_F(35_C) outdoor wb.
Use either the accessory Time--- Delay Relay KAATD0101TDR or a furnace equipped with TDR. Most Carrier furnaces are equipped with TDR.
computer simulation procedures.
CAPACITY
HIGHLOWHIGHLOW
AHRI STANDARD RATINGS --- COOLING
SEEREER
ID CFM
10
Page 11
Tot a l
Tot a l
Capacity MBtuh
Capacity MBtuh
Sys.
KW**
Sys.
KW**
Sys.
Tot a l
KW**
Capacity MBtuh
Sys.
Tot a l
KW**
CONDENSER ENT ERING AIR TEMP ERATURES ° F (° C)
Capacity MBtuh
Sys.
Tot a l
KW**
24ANB124A**31 Outdoor Section With FE5ANB004 Indoor Section --- High
Capacity MBtuh
24ANB124A**31 Outdoor Section With FE5ANB004 Indoor Section --- Low
(245 kW) per 1000 CFM (480 L/S) of indoor coil air for each degree below 80_F(27_C), or add 835 Btuh (245 kW) per 1000 CFM (480 L/S) of indoor coil air per degree above 80_F(27_C).
** System kw is total of indoor and outdoor unit kilowatts.
EWB — Entering Wet Bulb
} Sensible capacities shown are based on 80_F(27_C) entering air at the indoor coil. For sensible capacities at other than 80_F(27_C), deduct 835 Btuh
# D etailed cooling capacities are based on indoor and outdoor unit at the same elevation per AHRI standard 210/240 --- 2008. If additional tubing length and/or indoor unit is located above ou tdoor unit, a slight variation in capacity
{ Total and sensible capacities are net capacities. Blower motor heat has been subtracted.
NOTE: When the required data fall between the published data, interpolation may be performed. Extrapolation is not an acceptable practice.
Outdoor--mounted, air--cooled, split--system air conditioner unit
suitableforground orrooftopinstallation.Unitconsistsof ahermetic
compressor, an air--cooled coil, propeller--type condenser fan, and a
control box. Unit will discharge supply air upward as shown on
contract drawings. Unit willbe used in a refrigeration circuit to match
up to a packaged fan coil or coil unit.
Quality Assurance
— Unit will be rated in accordance with the latest edition of
AHRI Standard 210.
— Unit will be certified for capacity and efficiency, and
listed in the latest AHRI directory.
— Unit construction will comply with latest edition of
ANSI/ ASHRAE and with NEC.
— Unit will be constructed in accordance with UL
standards and will carry the UL label of approval. Unit
24ANB1
will have c--UL approval.
— Unit cabinet will be capable of withstanding Federal Test
Method Standard No. 141 (Method 6061) 500--hr salt
spray test.
— Air--cooled condenser coils will be leak tested and
pressure tested.
— Unit constructed in ISO9001 approved facility.
Delivery, Storage, and Handling
— Unit will be shipped as single package only and is stored
and handled per unit manufacturer’s recommendations.
Warranty (for inclusion by specifying engineer)
— U.S. and Canada only.
PRODUCTS
Equipment
— Factory assembled, single piece,air--cooled air
conditioner unit. Contained within the unit enclosure is
all factory wiring, piping, controls, compressor,
refrigerant charge Puronr (R--410A), and special features
required prior to field start--up.
Unit Cabinet
— Unit cabinet, including louvered coil guard, will be
constructed of galvanized steel, bonderized, and coated
with a powder coat paint.
Fans
— Condenser fan will be direct--drive propeller type,
discharging air upward.
AIR--COOLED, SPLIT--SYSTEM AIR CONDITIONER
24ANB1
2 TO 5 NOMINAL TONS
— Condenser fan motors will be totally enclosed, 1--phase
type with class B insulation and permanently lubricated
bearings. Shafts will be corrosion resistant.
— Fan blades will be statically and dynamically balanced.
— Condenser fan openings will be equipped with coated
steel wire safety guards.
Compressor
— Compressor will be hermetically sealed.
— Compressor will be mounted on rubber vibration
isolators.
Condenser Coil
— Condenser coil will be air cooled.
— Coil will be constructed of aluminum fins mechanically
bonded to copper tubes which are then cleaned,
dehydrated, and sealed.
Refrigeration Components
— Refrigeration circuit components will include liquid--line
shutoff valve with sweat connections, vapor--line shutoff
valve with sweat connections, system charge of Puronr
(R--410A) refrigerant, and compressor oil.
— Unit will be equipped with high--pressure switch, low
pressure switch and filter drier for Puron refrigerant.
Operating Characteristics
— The capacity of the unit will meet or exceed _____ Btuh
at a suction temperature of _____ _F/_C. The power
consumption at full load will not exceed _____ kW.
— Combination of the unit and the evaporator or fan coil
unit will have a total net cooling capacity of _____ Btuh
or greater at conditions of _____ CFM entering air
temperature at the evaporator at _____ _F/_C wet bulb
and _____ _F/_C dry bulb, and air entering the unit at
_____ _F/_C.
— The system will have a SEER of _____ Btuh/watt or
greater at DOE conditions.
Electrical Requirements
— Nominal unit electrical characteristics will be _____ v,
single phase, 60 hz. The unit will be capable of
satisfactory operation within voltage limits of _____ v to
_____ v.
— Unit electrical power will be single point connection.
— Control circuit will be 24v.
Special Features
— Refer to section of this literature identifying accessories
and descriptions for specific features and available
enhancements.
18
Page 19
SYSTEM DESIGN SUMMARY
1. Intended for outdoor installation with free air inlet and outlet. Outdoor fan external static pressure available is less than 0.01--in. wc.
2. Minimum outdoor operating air temperature without low--ambient operation accessory is 55_F (12.8_C).
3. The maximum outdoor operating ambient in cooling mode is 125_F (51.67_C) when operating voltage is 230v. For 208v
applications, the maximum outdoor ambient is 120_F (48.9_C).
4. For reliable operation, unit should be level in all horizontal planes.
5. For interconnecting refrigerant tube lengths greater than 80 ft (23.4 m) and/or elevation differences between indoor and outdoor units
greater than 20 ft (6.1 m), consult Residential Piping and Longline Guideline and Service Manual available from equipment distributor.
6. If any refrigerant tubing is buried, provide a 6 in. (152.4 mm) vertical rise to the valve connections at the unit. Refrigerant tubing
lengths up to 36 in. (914.4 mm) may be buried without further consideration. Do not bury refrigerant lines longer than 36 in. (914.4
mm).
7. Use only copper wire for electric connection at unit. Aluminum and clad aluminum are not acceptable for the type of connector
provided.
8. Do not apply capillary tube indoor coils to these units.
9. Factory--supplied filter drier must be installed.
24ANB1
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24ANB1
Copyright 2013 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Edition Date: 03/13
20
Catalog No. 24ANB1---5PD
Replaces: 24ANB1 --- 4PD
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