Fig. A — Model Number Nomenclature (Vertical Units)
Model Series - WeatherMaker
®
TC - Standard Efficiency
Unit Heat Type
48 - Gas Heat Packaged Rooftop
Cooling Tons (Vertical Airflow)
17 = 15 tons 28 = 25 tons
20 = 17.5 tons 30 = 27.5 tons
24 = 20 tons
Heat Options
D = Low Gas Heat
E = Medium Gas Heat
F = High Gas Heat
S = Low Heat w/ Stainless Steel Exchanger
R = Medium Heat w/ Stainless Steel Exchanger
T = High Heat w/ Stainless Steel Exchanger
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
(electromechanical controls only)
K = Condensate Overflow Switch and RA Smoke Detectors
L = Condensate Overflow Switch and RA + SA
Smoke Detectors
Indoor Fan Options & Air Flow Configuration
1 = Standard Static/Vertical Supply, Return Air Flow
2 = Medium Static/Vertical Supply, Return Air Flow
3 = High Static/Vertical Supply, Return Air Flow
B = Med Static High Efficiency Motor/Vertical Supply, Return Air Flow
C = High Static High Efficiency Motor/Vertical Supply, Return Air Flow
Refrig. Systems Options
D = Two stage cooling model with RTPF coils
E = Two stage cooling models with Humidi-MiZer
®
(17-28 models with RTPF coils only)
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
Coil Options – Novation (Outdoor – Indoor – Hail Guard)
G = Al/Al – Al/Cu
H = Al/Al – Cu/Cu
J = Al/Al – E-coat Al/Cu
K = E-coat Al/Al – Al/Cu
L = E-coat Al/Al – E-coat Al/Cu
T = Al/Al – Al/Cu – Louvered Hail Guard
U = Al/Al – Cu/Cu – Louvered Hail Guard
V = Al/Al – E-coat Al/Cu – Louvered Hail Guard
W = E-coat Al/Al – Al/Cu – Louvered Hail Guard
X = E-coat Al/Al – E-coat Al/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 = Base Electro-mechanical Controls (can be used
with W7212 EconoMi$er IV)
1 = PremierLink
™
Controller (for 1-speed motors only)
2 = RTU Open Multi-Protocol Controller
6 = Electro-mechanical w/ 2-Speed Fan
and W7220 Economizer Controller (can be used
with W7220 EconoMi$er X)
Intake / Exhaust Options
A = None
B = Temperature Economizer w/ Barometric Relief
F = Enthalpy Economizer w/ Barometric Relief
K = 2-Position Damper
U =
Temp Ultra Low Leak Economizer w/ Baro Relief
V =
Temp Ultra Low Leak Economizer w/ PE (cert) -
Vertical Air Only
W =
Enthalpy Ultra Low Leak Economizer w/ Baro Relief
X =
Enthalpy Ultra Low Leak Economizer
PE (cert) -
Vertical Air Only
Service Options
0 = None
1 = Unpowered Convenience Outlet
2 = Powered Convenience Outlet
3 = Hinged Panels
4 = Hinged Panels and
Unpowered Convenience Outlet
5 = Hinged Panels and
Powered Convenience Outlet
Packaging
0 = Standard
Electrical Options
A = Non USA models - No (SAV) included
C = Non-Fused Disconnect
G = Standard USA models - (SAV) included
J = 2 Speed Fan Controller (VFD) &
Non-Fused Disconnect
Example:
Position:
48TCDD24A1A5-0A3G 0
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