5443703-LTG-B-0418
Johnson Controls Unitary Products
3
All dimensions are in inches and are subject to change without notice.
Overall height is from bottom of base pan to top of fan guard.
Overall length and width include screw heads.
PHYSICAL AND ELECTRICAL DATA
MODEL
AL21B2421S
AL21B3621S
AL21B4821S
AL21B6021S
Unit Supply Voltage
208-230V, 1
60Hz
Normal Voltage Range
1
187 to 252
Minimum Circuit Ampacity
17.4
25.7
28.6
33.9
Max. Overcurrent Device Amps
2
30
40
45
50
Compressor
Type Scroll
Scroll
Scroll
Scroll
Rated Load
12.8
19.2
20.8
25.0
Locked Rotor
23.0
35.0
35.0
50.0
Crankcase Heater (Stator Heat)
Yes
Yes
Yes
Yes
HS Kit Required with TXV
N/A
N/A
N/A
N/A
Fan Diameter Inches
24
24
26
26
Fan Motor
Rated HP
1/8
1/4
1/3
1/3
Rated Load Amps
1.4
1.7
2.6
2.6
Nominal RPM
1025
1025
975
1050
Nominal CFM
3500
3900
4800
5300
Coil
Face Area Sq. Ft.
23.82
23.82
28.80
31.2
Rows Deep
1
1
2
2
Fins / Inch
22
22
18
18
Liquid Line Set OD (Field Installed)
3/8
3/8
3/8
3/8
Vapor Line Set OD (Field Installed)
3
3/4
3/4
7/8
7/8
Unit Charge (Lbs. - Oz.)
4
7 - 8
7 - 6
14 - 9
15 - 1
Charge Per Foot, Oz.
0.62
0.62
0.67
0.67
Operating Weight Lbs.
194
205
264
270
1. Rated in accordance with AHRI Standard 110-2012, utilization range “A”.
2. Dual element fuses or HACR circuit breaker. Maximum allowable overcurrent protection.
3. For applications with non-standard vapor line sizes, see the “Applications & Accessories” section of this Technical Guide.
4. The Unit Charge is correct for the outdoor unit, smallest matched indoor unit, and 15 feet of refrigerant tubing. For tubing lengths other than 15 feet, add or sub-
tract the amount of refrigerant, using the difference in actual lineset length (not the equivalent length) multiplied by the per foot value.
&
%
$
$
DIMENSIONS
Unit
Model
Dimensions
(Inches)
Refrigerant Connection
Service Valve Size
A
B
C
Liquid
Vapor
AL21B2421S
40-1/4
35-1/2
32
3/8
3/4
AL21B3621S
40-1/4
35-1/2
32
AL21B4821S
43-1/4
38-1/4
34-1/2
7/8
AL21B6021S
46-1/2
38-1/4
34-1/2