Rated Indoor Airflow (cfm)
The table to the right lists the rated indoor airflow used
for the AHRI efficiency rating for the units covered in this
document.
Model
551J = Cooling RTU with optional
High Efficient Electric Heat
Voltage
E = 460-3-60
P = 208/230-3-60
T = 575-3-60
Cooling Tons
07 - 6 ton
08 - 7.5 ton
09 - 8.5 ton
11 - 10 ton (12.0 EER)
12 - 10 ton (11.7 EER)
Refrigerant System/Gas Heat Options
A = Standard One-Stage Cooling Models
D = Two Stage Cooling Models
G = Standard One Stage Cooling Models and Perfect Humidity
K = Two Stage Cooling Models and Perfect Humidity
Heat Level
(Field-installed electric heaters available)
000 = No Heat
Coil Options (Outdoor – Indoor – Hail Guard)
A = Al/Cu – Al/Cu
B = Precoat Al/Cu – Al/Cu
C = E-coat Al/Cu – Al/Cu
D = E-coat Al/Cu – E-Coat Al/Cu
E = Cu/Cu – Al/Cu
F = Cu/Cu – Cu/Cu
M = Al/Cu – Al/Cu – Louvered Hail Guards
N = Precoat Al/Cu – Al/Cu – Louvered Hail Guards
P = E-coat Al/Cu – Al/Cu – Louvered Hail Guards
Q = E-coat Al/Cu – E-coat Al/Cu – Louvered Hail Guards
R = Cu/Cu – Al/Cu – Louvered Hail Guards
S = Cu/Cu – Cu/Cu – Louvered Hail Guards
1
2
3
4
5
6
7
8
5
5
1
J
E
1
2
D
TM
Fig. 1 - - 551J*07- - 12 Model Number Nomenclature (Example)
Model Number
551J*07A/G
551J*07D/K
551J*08D/K
551J*09D/K
551J*11D/K
551J*12D/K
9
10 11 12 13 14 15 16 17
0
0
0
A
3
A
0
A
Factory-Installed Options
0A = None
Outdoor Air Options
A = None
B = Temperature Economizer w/ Barometric Relief
and W7212 Economizer Controller
E = Temperature Economizer w/ Barometric Relief, CO
and W7212 Economizer Controller
H = Enthalpy Economizer w/ Barometric Relief
and W7212 Economizer Controller
L = Enthalpy Economizer w/ Barometric Relief, CO
and W7212 Economizer Controller
Q = Motorized 2 Position Damper w/ Barometric Relief
U = Temperature Ultra Low Leak Economizer
w/ Barometric Relief
W = Enthalpy Ultra Low Leak Economizer w/ Barometric Relief
Indoor Fan Options
1 = Standard Static Option – Belt Drive
2 = Medium Static Option – Belt Drive
3 = High Static Option – Belt Drive
3
Full Load Airflow (cfm)
2400
2400
3000
3000
3000
3000
A
Packaging and 2-Speed Indoor Fan Motor
A = Standard Packaging, electro-mechanical
controls that require W7212 EconoMi$er
B = LTL Packaging, electro-mechanical controls
that require W7212 EconoMi$er IV
C = Standard Packaging, electro-mechanical
controls that require W7220 EconoMi$er X
D = Standard Packaging and 2-speed Indoor Fan
Motor (VFD) Controller
E = LTL Packaging and 2-speed Indoor Fan
Motor (VFD) Controller
F = LTL Packaging, electro-mechanical controls
that require W7220 EconoMi$er X
NOTE: See the 551J 3 to 15 ton Price Pages for a
complete list of factory-installed options.
®
IV
2
2
a551J--- 008