York AHR18B3XH21 Quick start guide

TECHNICAL GUIDE
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.york.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
registered online within 90 days of purchase for replace-
ment or closing for new home construction.
ISO 9001
Certified Quality
Management System
680206-YTG-C-0612
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
DESCRIPTION
This fan coil line offers the ultimate in application flexibility. The
AHR (non-variable speed motor) models are shipped as upflow
models, that can be installed in upflow, horizontal right or left
without the need for additional field installed kits.
All JCI Unitary Products air handlers and coils use a TXV to pro-
vide our customers with the optimum performance and refriger-
ant control. Air handlers are shipped with “Flex-coils” without a
factory installed metering 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
control 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 brazing to replace or install.
Insulated Cabinet - All air handler cabinets are thermally insu-
lated 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 verifica-
tion.
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 - New 6HK series of field installed electric
heat kits are available for installation friendly and easy service
applications. These 6HK kits are unique to these new models.

680206-YTG-C-0612
2Johnson Controls Unitary Products
DIMENSIONS & DUCT CONNECTION DIMENSIONS
J
D
Blower
Compartment
Circuit Breaker
Panel
Drain Pan Connections
for Horizontal Applications
Refrigerant
Connections Drain Connections
for Upflow
Applications
7-11/32”
B
A
K
C
1-1/2”
Top Outlet
Dimensions
Filter
Access
18-9/32” E
Bottom Inlet
Dimensions
13”
F
Dimensions
Models
Dimensions Wiring Knockouts Refrigerant
Connections
Line Size
ABC DEF JK
Height Width Depth Power Control Liquid Vapor
AHR18B3XH21 46” 17 1/2”
21 1/2”
16 1/2” 13-29/32" 16 1/2”
7/8" (1/2")1
1-3/8"(1")
1-23/32" (1-1/4") 7/8" (1/2") 3/8" 3/4"
AHR24B3XH21 ( 46” 17 1/2” 16 1/2” 13-29/32" 16 1/2”
AHR30B3XH21 ( 46” 17 1/2” 16 1/2” 13-29/32" 16 1/2”
AHR36B3XH21 ( 46” 17 1/2” 16 1/2” 13-29/32" 16 1/2”
AHR42C3XH21 ( 52” 21” 21 1/2” 17-13/32" 20”
AHR48D3XH21 ( 57” 24 1/2” 26” 20-29/32" 23-1/2” 7/8"
AHR60D3XH21 ( 57” 24 1/2” 26” 20-29/32" 23-1/2”
1. Actual size (Conduit size).
COIL TECHNICAL DATA
Models Application Refrig.
Conn. Types Face Area (Sq. Ft.) Rows Deep Fin Per In. Coil Size Tube Geometry Tube Dia. Fin Type
AHR18B3XH21 ( Cooling /Heat Pump Sweat 3.40 2 14 (2) 14 x 17.5 1 x 0.866 3/8 Enhanced
AHR24B3XH21 ( Cooling /Heat Pump Sweat 3.90 3 12 (2) 16 x 17.5 1 x 0.866 3/8 Enhanced
AHR30B3XH21 ( Cooling /Heat Pump Sweat 3.90 3 12 (2) 16 x 17.5 1 x 0.866 3/8 Enhanced
AHR36B3XH21 ( Cooling /Heat Pump Sweat 4.86 3 12 (2) 20 x 17.5 1 x 0.866 3/8 Enhanced
AHR42C3XH21 ( Cooling /Heat Pump Sweat 5.35 3 12 (2) 22 x 17.5 1 x 0.866 3/8 Enhanced
AHR48D3XH21 ( Cooling /Heat Pump Sweat 5.83 3 11 (2) 24 x 17.5 1 x 0.866 3/8 Enhanced
AHR60D3XH21 ( Cooling /Heat Pump Sweat 6.80 3 12 (2) 28 x 17.5 1 x 0.866 3/8 Enhanced

680206-YTG-C-0612
Johnson Controls Unitary Products 3
Note: Airflow is calculated for each system tonnage. Capacity varies with O.D. product.
COOLING CAPACITY
Models Rated CFM Entering Air °F
(Dry/Wet Bulb) MBH@ Evap. Temp. and Corresponding R-410A Pressure °F/PSIG
35/107.9 40/118.9 45/130.7 50/143.3
FULL-CASED “A” TYPE MULTI-POSITION
AHR18B3XH21 665
85/72 40.7 35.6 30.5 24.1
80/67 35.0 29.5 23.9 18.6
75/62 27.9 22.7 18.1 12.4
70/57 22.1 19.8 16.9 14.1
AHR24B3XH21 740
85/72 47.9 42.4 36.8 29.9
80/67 40.9 35.2 29.0 22.6
75/62 33.6 28.0 21.7 15.5
70/57 26.2 23.0 19.9 16.9
AHR30B3XH21 1115
85/72 65.8 60.4 50.7 41.5
80/67 58.0 49.5 39.9 31.2
75/62 47.1 38.9 30.4 21.1
70/57 37.1 33.1 28.2 23.9
AHR36B3XH21
1060
85/72 71.1 62.4 51.5 44.3
80/67 59.2 51.0 42.0 32.7
75/62 48.0 39.6 30.8 21.8
70/57 37.3 32.8 28.3 24.0
1245
85/72 83.2 66.7 60.1 48.9
80/67 66.0 59.5 47.8 37.1
75/62 55.0 45.2 35.5 24.8
70/57 42.9 38.1 32.6 27.6
AHR42C3XH21
1230
85/72 68.2 72.9 62.8 51.6
80/67 66.3 59.7 48.6 38.4
75/62 56.4 45.4 36.1 25.5
70/57 43.7 38.3 33.3 28.3
1485
85/72 69.8 86.0 74.0 59.1
80/67 68.5 69.5 56.6 44.2
75/62 65.3 54.1 42.0 29.8
70/57 51.0 45.4 39.1 32.8
AHR48D3XH21
1320
85/72 87.5 75.9 64.4 51.7
80/67 71.2 59.9 49.8 37.2
75/62 56.5 46.6 35.4 23.3
70/57 43.5 39.5 34.0 28.4
1610
85/72 102.3 90.1 76.1 60.5
80/67 83.7 71.5 57.3 43.6
75/62 67.0 54.0 41.2 27.0
70/57 50.9 46.6 39.8 33.4
AHR60D3XH21
1350
85/72 93.7 82.0 70.0 57.4
80/67 76.5 65.5 54.1 41.4
75/62 60.9 50.3 38.4 26.2
70/57 46.6 41.6 35.5 29.8
1620
85/72 70.8 96.4 82.4 66.2
80/67 89.9 76.0 62.8 47.3
75/62 71.4 58.3 44.8 29.9
70/57 55.0 48.4 41.9 34.9
1870
85/72 126.4 110.6 92.8 74.5
80/67 102.1 86.3 70.0 53.1
75/62 81.5 65.6 50.0 34.1
70/57 62.1 55.3 47.1 39.4

680206-YTG-C-0612
4Johnson Controls Unitary Products
APPLICATION FACTORS - RATED CFM VS. ACTUAL CFM
% Of Rated Airflow (CFM) 80% 90% 100% 110% 120%
Capacity Factor 0.96 0.98 1.00 1.02 1.03
PHYSICAL & ELECTRICAL DATA - COOLING ONLY (60 Hz)
Models AHR18B AHR24B AHR30B AHR36B AHR42C AHR48D AHR60D
Blower - Diameter x Width 10 x 8 10 x 8 10 x 8 10 x 8 10 x 10 10X10 10X10
Motor HP 1/4 HP 1/4 HP 3/4 HP 3/4 HP 3/4 HP 3/4 HP 3/4 HP
Nominal RPM 1075 1075 1075 1075 1075 1075 1075
Voltage 208/230 208/230 208/230 208/230 208/230 208/230 208/230
Amps Full Load (230) 1.4 1.4 3.8 3.8 3.8 3.8 3.8
Filter1Type DISPOSABLE OR PERMANENT Size 16 x 20 x 1 16 x 20 x 1 16 x 20 x 1 16 x 20 x 1 20 x 20 x 1 22 x 20 x 1 22 x 20 x 1
Permanent Type Kit 1PF0601BK 1PF0601BK 1PF0601BK 1PF0601BK 1PF0602BK 1PF0603BK 1PF0603BK
Shipping / Operating Weight (lbs.) 112/100 117/102 117/105 122/110 148/133 165/147 168/150
1. Field Supplied.
KW & MBH CONVERSIONS - FOR TOTAL POWER INPUT REQUIREMENT
FOR 208V OPERATION MULTIPLY 240V TABULATED KW & MBH BY .751 230V 240V .918
220V 240V .840
ELECTRICAL DATA - COOLING ONLY (60 Hz)
Models
Total Motor Amps Minimum Circuit Ampacity Max. O.C.P.1
Amps/Type Minimum Wire
Size A.W.G.
60 Hertz 60 Hertz
208V230V208V230V
AHR MODELS
AHR18B3XH21 1.3 1.4 1.6 1.8 15 14
AHR24B3XH21 1.3 1.4 1.6 1.8 15 14
AHR30B3XH21 3.4 3.8 4.3 4.8 15 14
AHR36B3XH21 3.4 3.8 4.3 4.8 15 14
AHR42C3XH21 3.4 3.8 4.3 4.8 15 14
AHR48D3XH21 3.4 3.8 4.3 4.8 15 14
AHR60D3XH21 3.4 3.8 4.3 4.8 15 14
1. OCP = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.
* May be 0 (no Circuit Breaker) or 1 (with Circuit Breaker).

680206-YTG-C-0612
Johnson Controls Unitary Products 5
ELECTRICAL DATA - 208/230-1-60
Models Heater
Models* PSC Min. Speed Tap
Total Heat1kW Staging
kW MBH W1 Only W1 + W2
208V 230V 208V 230V 208V 230V 208V 230V
AHR18B3XH21 6HK*6500206 Low 1.8 2.2 6.1 7.5 1.8 2.2 1.8 2.2
6HK*6500506 Med 3.6 4.4 12.3 15.0 3.6 4.4 3.6 4.4
6HK*6500806 Med 5.8 7.0 19.7 24.0 5.8 7.0 5.8 7.0
6HK*6501006 Med 7.2 8.8 24.6 29.9 7.2 8.8 7.2 8.8
AHR24B3XH21
6HK*6500206 Low 1.8 2.2 6.1 7.5 1.8 2.2 1.8 2.2
6HK*6500506 Low 3.6 4.4 12.3 15.0 3.6 4.4 3.6 4.4
6HK*6500806 Med 5.8 7.0 19.7 24.0 5.8 7.0 5.8 7.0
6HK*6501006 Med 7.2 8.8 24.6 29.9 7.2 8.8 7.2 8.8
6HK16501306 High 9.4 11.4 31.9 38.9 3.1 3.8 9.4 11.4
6HK16501506 High 10.8 13.2 36.9 44.9 3.6 4.4 10.8 13.2
AHR30B3XH21
6HK*6500206 Low 1.8 2.2 6.1 7.5 1.8 2.2 1.8 2.2
6HK*6500506 Low 3.6 4.4 12.3 15.0 3.6 4.4 3.6 4.4
6HK*6500806 Med 5.8 7.0 19.7 24.0 5.8 7.0 5.8 7.0
6HK*6501006 Med 7.2 8.8 24.6 29.9 7.2 8.8 7.2 8.8
6HK16501306 High 9.4 11.4 31.9 38.9 3.1 3.8 9.4 11.4
6HK16501506 High 10.8 13.2 36.9 44.9 3.6 4.4 10.8 13.2
AHR36B3XH21
6HK*6500206 Low 1.8 2.2 6.1 7.5 1.8 2.2 1.8 2.2
6HK*6500506 Low 3.6 4.4 12.3 15.0 3.6 4.4 3.6 4.4
6HK*6500806 Med 5.8 7.0 19.7 24.0 5.8 7.0 5.8 7.0
6HK*6501006 Med 7.2 8.8 24.6 29.9 7.2 8.8 7.2 8.8
6HK16501306 High 9.4 11.4 31.9 38.9 3.1 3.8 9.4 11.4
6HK16501506 High 10.8 13.2 36.9 44.9 3.6 4.4 10.8 13.2
6HK16501806 High 13.0 15.8 44.2 53.9 6.5 7.9 13.0 15.8
6HK16502006 High 14.4 17.5 49.1 59.9 7.2 8.8 14.4 17.6
AHR42C3XH21
6HK*6500206 Low 1.8 2.2 6.1 7.5 1.8 2.2 1.8 2.2
6HK*6500506 Low 3.6 4.4 12.3 15.0 3.6 4.4 3.6 4.4
6HK*6500806 Med 5.8 7.0 19.7 24.0 5.8 7.0 5.8 7.0
6HK*6501006 Med 7.2 8.8 24.6 29.9 7.2 8.8 7.2 8.8
6HK16501306 High 9.4 11.4 31.9 38.9 3.1 3.8 9.4 11.4
6HK16501506 High 10.8 13.2 36.9 44.9 3.6 4.4 10.8 13.2
AHR48D3XH21
6HK*6500206 Low 1.8 2.2 6.1 7.5 1.8 2.2 1.8 2.2
6HK*6500506 Low 3.6 4.4 12.3 15.0 3.6 4.4 3.6 4.4
6HK*6500806 Low 5.8 7.0 19.7 24.0 5.8 7.0 5.8 7.0
6HK*6501006 Med 7.2 8.8 24.6 29.9 7.2 8.8 7.2 8.8
6HK16501306 Med 9.4 11.4 31.9 38.9 3.1 3.8 9.4 11.4
6HK16501506 Med 10.8 13.2 36.9 44.9 3.6 4.4 10.8 13.2
6HK16501806 Med 13.0 15.8 44.2 53.9 6.5 7.9 13.0 15.8
6HK16502006 High 14.4 17.5 49.1 59.9 7.2 8.8 14.4 17.6
AHR60D3XH21
6HK*6500206 Low 1.8 2.2 6.1 7.5 1.8 2.2 1.8 2.2
6HK*6500506 Low 3.6 4.4 12.3 15.0 3.6 4.4 3.6 4.4
6HK*6500806 Low 5.8 7.0 19.7 24.0 5.8 7.0 5.8 7.1
6HK*6501006 Med 7.2 8.8 24.6 29.9 7.2 8.8 7.2 8.8
6HK16501306 Med 9.4 11.4 31.9 38.9 3.1 3.8 9.4 11.4
6HK16501506 Med 10.8 13.2 36.9 44.9 3.6 4.4 10.8 13.2
6HK16501806 Med 13.0 15.8 44.2 53.9 6.5 7.9 13.0 15.8
6HK16502006 High 14.4 17.5 49.1 59.9 7.2 8.8 14.4 17.6
6HK16502506 High 18.0 21.9 61.4 74.9 7.2 8.8 18.0 22.0
1. See conversion table on Page 4.
2. Air handler units have been tested to UL 1995 / CASA 22.2 No. 236-05 standards up to 0.30” w.c. external static pressure. Testing included air filter, wet coil, and
largest kW size heater, unless otherwise noted.

680206-YTG-C-0612
6Johnson Controls Unitary Products
ELECTRICAL DATA - (FOR SINGLE SOURCE POWER SUPPLY) - COPPER WIRE - 208/230-1-60
Models Heater
Models*
Heater
Amps
240V
Field Wiring
Min. Circuit Ampacity Max. O.C.P.1 Amps/Type 75°C Wire Size - AWG
208V 230V 208V 230V 208V 230V
AHR18B3XH21
6HK*6500206 10.0 12.42 13.73 15 15 12 12
6HK*6500506 20.0 23.25 25.71 25 30 10 10
6HK*6500806 32.0 36.25 40.08 40 45 8 8
6HK*6501006 40.0 44.92 49.67 45 50 8 6
AHR24B3XH21
6HK*6500206 10.0 12.42 13.73 15 15 12 12
6HK*6500506 20.0 23.25 25.71 30 30 10 10
6HK*6500806 32.0 36.25 40.08 40 50 8 8
6HK*6501006 40.0 44.92 49.67 45 50 8 6
6HK16501306 52.0 57.92 64.04 60 70 4 4
6HK16501506 60.0 66.58 73.63 70 80 4 4
AHR30B3XH21
6HK*6500206 10.0 15.13 16.73 20 20 12 12
6HK*6500506 20.0 25.96 28.71 30 30 10 10
6HK*6500806 32.0 38.96 43.08 40 45 8 8
6HK*6501006 40.0 47.63 52.67 50 60 6 6
6HK16501306 52.0 60.63 67.04 70 70 6 4
6HK16501506 60.0 69.30 76.63 70 80 4 4
AHR36B3XH21
6HK*6500206 10.0 15.13 16.73 20 20 12 12
6HK*6500506 20.0 25.96 28.71 30 30 10 10
6HK*6500806 32.0 38.96 43.08 40 45 8 8
6HK*6501006 40.0 47.63 52.67 50 60 8 6
6HK16501306 52.0 60.63 67.04 70 70 6 4
6HK16501506 60.0 69.30 76.63 70 80 4 4
6HK16501806 72.0 82.30 91.00 90 100 3 3
6HK16502006 80.0 91.0 100.6 100 110 3 2
AHR42C3XH21
6HK*6500206 10.0 15.1 16.7 20 20 12 12
6HK*6500506 20.0 26.0 28.7 30 30 10 10
6HK*6500806 32.0 39.0 43.1 40 45 8 8
6HK*6501006 40.0 47.6 52.7 50 60 6 6
6HK16501306 52.0 60.6 67.0 70 70 6 4
6HK16501506 60.0 69.30 76.63 70 80 4 4
AHR48D3XH21
6HK*6500206 10.0 15.1 16.7 20 20 12 12
6HK*6500506 20.0 26.0 28.7 30 30 10 10
6HK*6500806 32.0 39.0 43.1 40 45 8 8
6HK*6501006 40.0 47.6 52.7 50 60 6 6
6HK16501306 52.0 60.6 67.0 70 70 6 4
6HK16501506 60.0 69.3 76.6 70 80 4 4
6HK16501806 72.0 82.3 91.0 90 100 3 3
6HK16502006 80.0 91.0 100.6 100 110 3 2
AHR60D3XH21
6HK*6500206 10.0 15.1 16.7 20 20 12 12
6HK*6500506 20.0 26.0 28.7 30 30 10 10
6HK*6500806 32.0 39.0 43.1 40 45 8 8
6HK*6501006 40.0 47.6 52.7 50 60 6 6
6HK16501306 52.0 60.6 67.0 70 70 6 4
6HK16501506 60.0 69.3 76.6 70 80 4 4
6HK16501806 72.0 82.3 91.0 90 100 3 3
6HK16502006 80.0 91.0 100.6 100 110 3 2
6HK16502506 100.0 112.6 124.5 115 130 1 1
1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.
* May be 0 (no Circuit Breaker) or 1 (with Circuit Breaker).

680206-YTG-C-0612
Johnson Controls Unitary Products 7
ELECTRICAL DATA - (FOR MULTI-SOURCE POWER SUPPLY) - COPPER WIRE - 208/230-1-601
Models Heater
Models
Min. Circuit Ampacity Max. O.C.P.2 Amps/Type 75°C Wire Size - AWG
Circuit Circuit Circuit
1st 2nd 1st 2nd 1st 2nd
208/230 208/230 208/230 208/230 208/230 208/230
AHR24B3XH21 6HK16501306 37.5/41.3 20.3/22.4 40/45 25/25 8/8 12/12
6HK16501506 43.3/47.8 23.2/25.5 45/50 25/30 8/8 12/10
AHR30B3XH21 6HK16501306 37.5/41.3 23.0/25.4 40/45 25/30 8/8 10/10
6HK16501506 43.3/47.8 25.9/28.7 45/50 30/30 8/8 10/10
AHR36B3XH21
6HK16501306 37.5/41.3 23.0/25.4 40/45 25/30 8/8 12/12
6HK16501506 43.3/47.8 25.9/28.7 45/50 30/35 8/8 10/10
6HK16501806 38.9/42.9 43.2/47.7 40/45 50/50 8/8 8/8
6HK16502006 43.3/47.8 47.6/52.6 45/50 50/60 8/8 8/6
AHR42C3XH21 6HK16501306 37.5/41.3 23.0/25.4 40/45 25/30 8/8 12/12
6HK16501506 43.3/47.8 25.9/28.7 45/50 30/30 8/8 10/10
AHR48D3XH21
6HK16501306 37.5/41.3 23.0/25.4 40/45 25/30 8/8 12/12
6HK16501506 43.3/47.8 25.9/28.7 45/50 30/30 8/8 10/10
6HK16501806 38.9/42.9 43.2/47.7 40/45 45/50 8/8 8/8
6HK16502006 43.3/47.8 47.6/52.6 45/50 50/60 8/8 8/6
AHR60D3XH21
6HK16501306 37.5/41.3 23.0/25.4 40/45 25/30 8/8 12/12
6HK16501506 43.3/47.8 25.9/28.7 45/50 30/30 8/8 10/10
6HK16501806 38.9/42.9 43.2/47.7 40/45 45/50 8/8 8/8
6HK16502006 43.3/47.8 47.6/52.6 45/50 50/60 8/8 8/6
6HK16502506 64.9/71.7 47.6/52.6 70/80 50/60 4/4 8/6
1. If wire other than non-plated, 75° ambient, copper wire is used. consult applicable tables of the NEC and local codes.
2. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.
Electrical Data - 208/230-3-60
Models Heat Kit -
Three Phase Min. Speed Tap
Total Heat1KW Staging
KW MBH W1 Only W1 + W2
208V 230V 208V 230V 208V 230V 208V 230V
AHR24B3XH21 6HK06501525 High 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4
AHR30B3XH21 6HK06501525 High 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4
AHR36B3XH21 6HK06501525 Med 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4
6HK16502025 High 14.4 19.2 49.1 65.5 7.2 9.6 14.4 19.2
AHR42C3XH21 6HK06501525 Med 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4
AHR48D3XH21 6HK06501525 High 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4
6HK16502025 High 14.4 19.2 49.1 65.5 7.2 9.6 14.4 19.2
AHR60D3XH21 6HK06501525 High 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4 6HK16502025 High 14.4 19.2 49.1 65.5 7.2 9.6 14.4 19.2
6HK16502525 High 18 24 61.4 81.9 9.0 12.0 18.0 24.0
1. See conversion table on Page 4.
2.

680206-YTG-C-0612
8Johnson Controls Unitary Products
2. Heaters are 3 Phase.
TYPICAL APPLICATIONS
ACCESSORIES
Refer to Price Manual for specific model numbers.
TXV Kits - TXV kits are available for “Flex-coil” applications and
converting R22 to R410A or as a service replacement. All kits
are bolt-on and require no brazing to install.
Electric Heaters - 6HK models shown under electrical data
include sequential operation and temperature dual limit
switches for safe, efficient operation. Circuit breakers are pro-
vided where shown.
LIMITATIONS
These units must be wired and installed in accordance with all
national and local safety codes.
Voltage limits are as follows:
Airflow must be within the minimum and maximum limits
approved for electric heat, evaporator coils and outdoor units.
Electrical Data - (For Single Source Power Supply) - Copper Wire - 208/230-3-60
Models Heat Kit -
Three Phase
Heater
Amps
240V
Field Wiring
Min. Circuit Ampacity Max. O.C.P.1 Amps/Type 75°C Wire Size - AWG
208V 230V 208V 230V 208V 230V
AHR24B3XH21 6HK06501525 34.6 39.1 43.20 40 45 8 8
AHR30B3XH21 6HK06501525 34.6 41.7 46.20 45 50 8 8
AHR36B3XH21 6HK06501525 34.6 41.7 46.20 45 50 8 8
6HK16502025 46.2 54.3 60.09 60 70 6 4
AHR42C3XH21 6HK06501525 34.6 41.7 46.20 45 50 8 8
AHR48D3XH21 6HK06501525 34.6 41.7 46.20 45 50 8 8
6HK16502025 46.2 54.3 60.09 60 70 6 4
AHR60D3XH21 6HK06501525 34.6 41.7 46.20 45 50 8 8 6HK16502025 46.2 54.3 60.09 60 70 6 4
6HK16502525 57.7 66.8 73.87 70 80 4 4
1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.
Electrical Data - (For Multi-Source Power Supply) - Copper Wire - 208/230-3-60
Models Heater
Model
Minimum Circuit Ampacity Max. O.C.P.1 Amps/Type 75°C Wire Size - AWG
Circuit
1st 2nd 1st 2nd 1st 2nd
208/230 208/230 208/230 208/230 208/230 208/230
AHR36B3XH21 6HK16502025 29.3/33.6 25/28.9 30/35 30/30 10/10 10/10
AHR48D3XH21 6HK16502025 29.3/33.6 25/28.9 30/35 30/30 10/10 10/10
AHR60D3XH21 6HK16502025 29.3/33.6 25/28.9 30/35 30/30 10/10 10/10
6HK16502525 35.5/40.3 31.3/36.1 40/45 35/40 8/8 10/8
1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.
UPFLOW
HORIZONTAL RIGHT
HORIZONTAL LEFT
HEAT
HEAT
HEAT
Air Handler
Voltage Voltage code
1Normal Operating
Voltage Range
1. Rated in accordance with ARI Standard 110, utilization range “A”.
208/230-1-60 06 187-253
220/240-1-50 93 198-264

680206-YTG-C-0612
Johnson Controls Unitary Products 9
TYPICAL THERMOSTAT CONNECTIONS

Subject to change without notice. Published in U.S.A. 680206-YTG-C-0612
Copyright © 2012 by Johnson Controls, Inc. All rights reserved. Supersedes: 680206-YTG-B-0311
York International Corp.
5005 York Drive
Norman, OK 73069
AIRFLOW
AIR FLOW DATA - 60 Hz MODELS - 208 & 230 VOLT
Models Blower
Motor Speed CFM1 @ External Static Pressure - IWC
1. Dry coil conditions only, tested without filters.
2. Air handler units have been tested to UL 1995 / CASA 22.2 No. 236-05 standards up to 0.30” w.c. external static pressure. Testing included air filter, wet coil, and
largest kW size heater, unless otherwise noted.
3. For optimal performance static pressures of 0.2 to 0.5 are recommended.
Operation not recommended in shaded areas.
0.10 0.20 0.30 0.40 0.50 0.60 0.70
208 Volt
AHR18B3XH21 High 1024 1000 970 930 860 810 NA
Medium 756 731 700 670 620 550 NA
Low 557 531 495 445 375 315 195
AHR24B3XH21 High 995 970 935 900 925 795 645
Medium 820 810 780 745 695 545 485
Low 715 695 640 405 370 375 220
AHR30B3XH21 High 1380 1315 1245 1160 1075 990 885
Medium 1060 1040 1005 955 890 860 820
Low 1035 980 910 825 770 685 485
AHR36B3XH21 High 1410 1335 1270 1190 1110 990 820
Medium 1215 1170 1115 1050 935 850 740
Low 950 935 895 855 NA NA NA
AHR42C3XH21 High 1800 1725 1645 1545 1360 1200 1050
Medium 1535 1480 1415 1280 1155 1010 870
Low 1225 1195 1095 1025 925 825 680
AHR48D3XH21 High 1890 1830 1755 1650 1565 1450 1285
Medium 1515 1480 1450 1380 1295 1115 985
Low 1170 1165 1140 1100 965 860 745
AHR60D3XH21 High 1911 1841 1757 1668 1564 1439 1233
Medium 1556 1507 1450 1388 1266 1246 989
Low 1211 1181 1151 1062 992 911 827
230 Volt
AHR18B3XH21 High 1145 1100 1055 1005 930 845 725
Medium 755 750 725 665 605 485 435
Low 680 655 625 585 540 395 300
AHR24B3XH21 High 1305 1285 1225 1175 920 915 835
Medium 930 920 890 845 705 760 505
Low 735 730 700 670 545 470 NA
AHR30B3XH21 High 1450 1380 1300 1215 1130 1030 910
Medium 1330 1280 1205 1135 1050 975 780
Low 1160 1120 1065 1005 930 825 635
AHR36B3XH21 High 1470 1390 1325 1245 1155 1045 880
Medium 1325 1265 1205 1125 1025 965 840
Low 1115 1075 1025 950 NA NA NA
AHR42C3XH21 High 1750 1670 1570 1477 1260 1125 935
Medium 1590 1520 1435 1277 1150 1010 870
Low 1330 1280 1200 1083 980 850 NA
AHR48D3XH21 High 2005 1940 1850 1755 1650 1530 1405
Medium 1705 1665 1605 1510 1425 1340 1185
Low 1355 1330 1300 1245 1170 990 980
AHR60D3XH21 High 2034 1955 1858 1753 1640 1522 1296
Medium 1733 1672 1609 1527 1431 1272 1220
Low 1388 1359 1313 1255 1133 1004 912