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Model Number Description
DIGIT 1: Unit Type
S = Self-Contained (Packaged Rooftop)
Digit 2 — Unit Function
E = DX Cooling, Electric Heat
F = DX Cooling, Natural Gas Heat
L = DX Cooling, Hot Water Heat
S = DX Cooling, Steam Heat
X = DX Cooling, No Heat, Extended Casing
Digit 3 — System Type
E = DX Cooling, Electric Heat
Digit 4 — Development Sequence
E = DX Cooling, Electric Heat
Digit 5, 6, 7 — Nominal Capacity
090 = 90 Ton Air-Cooled
105 = 105 Ton Air-Cooled
120 = 120 Ton Air-Cooled
130 = 130 Ton Air-Cooled
150 = 150 Ton Air-Cooled
Digit 8 — Voltage Selection
4 = 460/60/3
5 = 575/60/3
C = 380/50/3
Digit 9 — Heating Capacity Selection
0 = No Heat
1 = Electric heat 90/56 kW 60/50 Hz
2 = Electric heat 140/88 kW 60/50 Hz
3 = Electric heat 265/166 kW 60/50 Hz
4 = Electric Heat 300/188 kW 60/50 Hz
A = Low Gas Heat — 2-stage
B = Medium Gas Heat — 2-stage
C = High Gas Heat — 2-stage
D = Low Gas Heat — Modulating
E = Medium Gas Heat — Modulating
F = High Gas Heat — Modulating
G = Low Heat - 1.0" (25mm) Valve
H = Low Heat - 1.25" (32mm) Valve
J = Low Heat - 1.5" (38mm) Valve
K = Low Heat - 2.0" (50mm) Valve
L = Low Heat - 2.50" (64mm) Valve
M = Low Heat - 3.0" (76mm) Valve
N = High Heat - 1.0" (25mm) Valve
P = High Heat - 1.25" (32mm) Valve
Q = High Heat - 1.5" (38mm) Valve
R = High Heat - 2.0" (50mm) Valve
T = High Heat - 2.50" (64mm) Valve
U = High Heat - 3.0" (76mm) Valve
RT-SVX073A-EN
DIGIT 10, 11 — Design Sequence
DIGIT 12 — Unit Configuration Selection
1 = One-Piece Unit w/o Blank Section
2 = One-Piece Unit w/4' Blank Section
3 = One-Piece Unit w/8' Blank Section
4 = Two-Piece Unit w/o Blank Section
5 = Two-Piece Unit w/4' Blank Section
6 = Two-Piece Unit w/8' Blank Section
DIGIT 13 — Supply/Return Airflow Direction
1 = Downflow Supply/Upflow Return
2 = Downflow Supply/Horiz End Return
3 = Downflow Supply/Horiz Right Return
4 = Right Side Horiz Supply/Upflow Return
5 = Right Side Horiz Supply/Horizontal End Return
6 = Right Side Horiz Supply/Horizontal Right
Return
DIGIT 14 — Supply Fan Options
1 = Standard CFM Supply Fan Motor(s)
3 = Standard CFM Supply Fan - TEFC High EFF
Motor(s)
4 = Low CFM Supply Fan Motor(s)
6 = Low CFM Supply Fan - TEFC High EFF Motor
(s)
7 = Standard CFM Supply Fan - w/ Internal Shaft
Grounding
9 = Standard CFM Supply Fan - TEFC Motor and
internal SGR
A = Low CFM Supply Fan - w/ Internal Shaft
Grounding
C = Low CFM Supply Fan - TEFC Motor and
internal SGR
D = High CFM Fan Motor(s) and Piezometer
E = High CFM Fan - TEFC Motor(s) and
Piezometer
F = High CFM Fan - ODP with SGR Motor(s) and
Piezometer
G = High CFM Fan - TEFC with SGR Motor(s) and
Piezometer
H = Low CFM Fan Motor(s) and Piezometer
J = Low CFM Fan - TEFC Motor(s) and Piezometer
L = Low CFM Fan - ODP with SGR Motor(s) and
Piezometer
M = Low CFM Fan - TEFC with SGR Motor(s) and
Piezometer
DIGIT 15 — Supply Fan Motor Selection
F = 15 hp
G = 20 Hp
H = 25 Hp
J = 30 Hp
K = 40 Hp
L = 50 Hp
M = 60 Hp
N = 75 Hp
P = 100 Hp
DIGIT 16 — Supply Fan RPM Selection
7 = 700
8 = 800
9 = 900
A = 1000
B = 1100
C = 1200
D = 1300
E = 1400
F = 1500
G = 1600
H = 1700
J = 1800
K = 1900
L = 2000
DIGIT 17 — Relief/Return Fan Options
0 = None
5 = Std CFM Exhaust w/ VFD w/Bypass
6 = Low CFM Exhaust w/ VFD w/Bypass
7 = Std CFM Exhaust w/ VFD w/o Bypass
8 = Low CFM Exhaust w/ VFD w/o Bypass
C = Std CFM Return w/ VFD w/ Bypass
D = Low CFM Return w/ VFD w/ Bypass
E = Std CFM Return w/ VFD w/o Bypass
F = Low CFM Return w/ VFD w/o Bypass
G = Std CFM Exhaust w/ VFD w/Bypass &
Piezometer
H = Low CFM Exhaust w/ VFD w/Bypass &
Piezometer
J = Std CFM Exhaust w/ VFD w/o Bypass &
Piezometer
K = Low CFM Exhaust w/ VFD w/o Bypass &
Piezometer
L = Std CFM Return w/ VFD w/ Bypass &
Piezometer
M = Low CFM Return w/ VFD w/ Bypass &
Piezometer
N = Std CFM Return w/ VFD w/o Bypass &
Piezometer
P = Low CFM Return w/ VFD w/o Bypass &
Piezometer
7
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