Fig. A — Model Number Nomenclature
Model Series - WeatherMaker
®
FC = Standard Efficiency (EcoBlue™ Technology)
Unit Heat Type
50 = Cooling with Optional Electric Heat
Packaged Rooftop
Cooling Tons
20 = 17.5 tons
24 = 20.0 tons
28 = 25.0 tons
30 = 27.5 tons
Electric Heat Size
- = No Heat
(Field Installed Available)
Sensor Options
A = None
B = RA Smoke Detector
C = SA Smoke Detector
D = RA + SA Smoke Detector
E = CO
2
F = RA Smoke Detector and CO
2
G = SA Smoke Detector and CO
2
H = RA + SA Smoke Detector and CO
2
J = Condensate Overflow Switch
K = Condensate Overflow Switch + RA Smoke Detectors
L = Condensate Overflow Switch + RA and SA Smoke Detectors
M = Condensate Overflow Switch + SA Smoke Detector
N = Condensate Overflow Switch + CO
2
P = Condensate Overflow Switch + RA Smoke Detector and CO
2
Q = Condensate Overflow Switch + SA Smoke Detector and CO
2
R = Condensate Overflow Switch + RA and SA Smoke Detector and CO
2
Indoor Fan Options - Vane Axial EcoBlue Fan System
2 = Standard/Medium Static Motor - Vertical Supply
3 = High Static Motor - Vertical Supply
5 = Standard/Medium Static Motor - Vertical Supply and Filter Status Switch
6 = High Static Motor - Vertical Supply and Filter Status Switch
J = High Static Motor - Horizontal Supply
L = High Static Motor - Horizontal Supply and Filter Status Switch
Refrig. Systems Options
M = Two Stage Cooling/One Circuit Models
N = Two Stage Cooling/One Circuit Models with
Humidi-MiZer
®
System
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
Voltage
1 = 575/3/60
5 = 208-230/3/60
6 = 460/3/60
Design Revision
- = Factory Design Revision
Base Unit Controls
0 = Electro-mechanical Controller - Can be used with
field-installed W7212 EcononMi$er IV
(Non - Fault Detection and Diagnostic)
3 = SystemVu™ Controller
6 = Electro-mechanical Controller - Can be used with W7220
EcononMi$er X (with Fault Detection and Diagnostic)
Intake / Exhaust Options
A = None
B = Low Leak Temp Economizer w/ Baro Relief
(Electro-Mechanical Controls Only)
D = Low Leak Temp Economizer w/ PE (cent) Vert Only
(EM Only)
F = Low Leak Enthalpy Economizer w/ Baro Relief
(EM Only)
H = Low Leak Enthalpy Economizer w/ PE (cent) Vert Only
(EM Only)
U = ULTRA Low Leak Temp Economizer w/ Baro Relief
V = ULTRA Low Leak Temp Economizer w/ PE (cent)
Vert Only
W = ULTRA Low Leak Enthalpy Economizer w/ Baro Relief
X = ULTRA Low Leak Enthalpy Economizer w/ PE (cent)
Vert Only
Service Options
0 = None
1 = Unpowered Convenience Outlet
2 = Powered Convenience Outlet
3 = Hinged Access Panels
4 = Hinged Access Panels and
Unpowered Convenience Outlet
5 = Hinged Access Panels and
Powered Convenience Outlet
6 = 4" MERV 13 High Efficiency Filter Track
7 = Unpowered Convenience Outlet and 4" MERV 13
High Efficiency Filter Track
8 = Powered Convenience Outlet and 4" MERV 13
High Efficiency Filter Track
9 = Hinged Access Panels and 4" MERV 13 High
Efficiency Filter Track
A = Hinged Access Panels, Unpowered Convenience
Outlet and 4" MERV 13 High Efficiency Filter Track
B = Hinged Access Panels, Powered Convenience
Outlet and 4" MERV 13 High Efficiency Filter Track
Packaging Compliance
0 = Standard
Electrical Options
A = None
C = Non-Fused Disconnect
D = Thru-The-Base Connections
F = Non-Fused Disconnect and
Thru-The-Base Connections
N = Phase Monitor/Protection
Q = Phase Monitor/Protection
and Non-Fused Disconnect
R = Phase Monitor/Protection
and Thru-The-Base Connections
T = Phase Monitor/Protection with Non-Fused
Disconnect and Thru-The-Base Connections
1 = HSCCR Protection
2 = HSCCR Protection and Thru-The-Base
Connections
Example:
Position:
50FC-M24A2A5-0A0A0
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