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Position:
1
Example:
5
Unit Type
551 - High Efficiency Cooling RTU
Model
®
J - Puron
(R-410A) Refrigerant
Voltage
E = 460-3-60
J = 208/230-1-60
P = 208/230-3-60
T = 575-3-60
Cooling Tons
04 - 3 tons
05 - 4 tons
06 - 5 tons
Refrig. System/Gas Heat Options
A = Standard one stage cooling models
G = Standard one stage cooling models
and Perfect Humidity™
Heat Level
(Field installed electric heaters available)
000 = No Heat
NOTE: On single phase (-J voltage code) models, the
following are not available as factory installed options:
TM
- Perfect Humidity
- Coated Coils or Cu Fin Coils
- Louvered Hail Guards
- Economizer or 2 Position Damper
- Powered 115 Volt Convenience Outlet
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17
5
1
J
E
0
6
A
0
Fig. 1 — 551J*04-06 Model Number Nomenclature (Example)
0
0
A
1
B
0
A
A
Factory Installed Options
0A = None
NOTE: See the 551J 3 to 12.5 ton Price Pages
Outdoor Air Options
A = None
B = Temperature Economizer w/ Barometric Relief,
Standard Leak (W7212 or W7220)
E = Temperature Economizer w/ Barometric Relief
and CO
H = Enthalpy Economizer w/ Barometric Relief,
Standard Leak (W7212 or W7220)
L = Enthalpy Economizer w/ Barometric Relief and CO
(W7212 or W7220)
Q = Motorized 2-Position Damper
U = Temp Economizer w/Barometric Rellief, Ultra Low Leak
(W7220)
W = Enthalpy Economizer w/Barometric Rellief, Ultra Low Leak
(W7220)
Indoor Fan Options
1 = Standard Static - Belt Drive
2 = Medium Static - Belt Drive
3 = High Static - Belt Drive
Coil Options (RTPF) (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 Guard
N = Precoat Al/Cu - Al/Cu — Louvered Hail Guard
P = E-coat Al/Cu - Al/Cu — Louvered Hail Guard
Q = E-coat Al/Cu - E-coat Al/Cu — Louvered Hail Guard
R = Cu/Cu - Al/Cu — Louvered Hail Guard
S = Cu/Cu - Cu/Cu — Louvered Hail Guard
3
Packaging
A = Standard Packaging
B = LTL Packaging, electro mech.
controls that require W7212 EconoMi$er IV
C = Standard Packaging, electro mech.
controls that require W7212 EconoMi$er IV
F = LTL Packaging, electro mech.
controls that require W7220 EconoMi$er IV
for a complete list of factory installed
options.
(W7212 or W7220)
2
2
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