10
RT-SVX072A-EN
90 to 130 Tons, Air Cooled
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
H = Single Zone
Digit 4 — Development Sequence
L = R-410A Development Sequence
Digit 5, 6, 7 — Nominal Capacity
*90 = 90 Ton Air Cooled
*11 = 105 Ton Air Cooled
*12 = 115 Ton Air Cooled
*13 = 130 Ton Air Cooled
Digit 8 — Power Supply
4 = 460/60/3 XL
5 = 575/60/3 XL
Digit 9 — Heating Capacity
Note: When Digit 2 is “F” (Gas Heat), the
following values apply in Digit 9:
H = High Heat – 2-stage
O = No Heat
P = High Heat — Modulation
T = High Heat—Ultra Modulation
Note: When the second digit calls for “E”
(electric heat), the following values
apply in Digit 9:
W = 190 kW
Note: When the second digit calls for “L” (hot
water) or “S” (steam) heat, one of the
following valve size values must be in
Digit 9:
High Heat Coil: 3 = 1", 4 = 1.25", 5 = 1.5",
6 = 2", 7 = 2.5”
Low Heat Coil: C = 1", D = 1.25", E = 1.5", F
= 2", G = 2.5”
Digit 10 — Design Sequence
* = Current
Note: Sequence may be any letter A through
Z, or any digit 1 through 9.
Digit 11 — Relief Option
0 = None
7 = 100% Relief 15 HP with Statitrac
8 = 100% Relief 20 HP with Statitrac
9 = 100% Relief 25 HP with Statitrac
H = 100% Relief 30 HP with Statitrac
J = 100% Relief 40 HP with Statitrac
Digit 12 — Relief Fan
(Relief Fan)
0 = None
5 = 500 RPM
6 = 600 RPM
7 = 700 RPM
8 = 800 RPM
Digit 13 — Filter (Pre DX/Final)
A = Throwaway
C = High Efficiency Throwaway
D = Bag with Prefilter
E = Cartridge with Prefilter
F = Throwaway Filter Rack (filter not
included)
G = Bag Filter Rack (Filter Not Included)
H = StandardThrowaway Filter/Cartridge
Final Filters
J = High Efficiency Throwaway Filter/
Cartridge Final Filters
K = Bag Filters with 2"Throwaway Prefilters/
Cartridge Final Filters
L = Cartridge Filters with 2"Throwaway
Prefilters /Cartridge Final Filters
M = StandardThrowaway Filter/Cartridge
Final Filters with 2–inch Throwaway Prefilters
N = High EfficiencyThrowaway Filters/
Cartridge Final Filters with 2–inch Throwaway
Prefilters
P = Bag Filters with Prefilters Cartridge Final
Filters with 2–inch Throwaway Prefilters
Q = Cartridge Filters with Prefilters/Cartridge
Final Filters with 2–inch Throwaway Prefilters
Digit 14 — Supply Air Fan HP
C = 30 HP (2x15 HP)
D = 40 HP (2x20 HP)
E = 50 HP (2x25 HP)
F = 60 HP (2x30 HP)
G = 80 HP (2x40 HP)
Digit 15 — Supply Air Fan Drive
A = 1000 RPM
B = 1100 RPM
C = 1200 RPM
D = 1300 RPM
E = 1400 RPM
F = 1500 RPM
G = 1600 RPM
Digit 16 — Outside Air
D = 0-100% Economizer (Std.)
E = 0-100% Economizer with Traq with DCV
F = 0-100% Economizer with DCV
Note: Must install CO
2
sensor(s) for DCV to
function properly.
Digit 17 — System Control
6 = VAV Discharge Temperature Control with
VFD without Bypass
7 = VAV Discharge Temperature Control with
VFD and Bypass
8 = VAV Discharge Temperature Control
Supply and ReliefFan with VFD without
Bypass
9 = VAV Discharge Temperature Control
Supply and Relief Fan with VFD and Bypass
A = VAV – Single Zone VAV – with VFD
without Bypass
B = VAV – Single Zone VAV – with VFD with
Bypass
C = VAV – Single Zone VAV – Supply and
Relief/Return Fan with VFD without Bypass
D = VAV – Single Zone VAV – Supply and
Relief/Return Fan with VFD with Bypass
Digit 18 — Zone Sensor
0 = None
A = Dual Setpoint Manual or Auto
Changeover (BAYSENS108*)
C = Room Sensor with Override and Cancel
Buttons (BAYSENS073*)
D = Room Sensor with Temperature
Adjustment and Override and Cancel Buttons
(BAYSENS074*)
L = Programmable Zone Sensor with System
Function Modes for VAV (BAYSENS800*)
Note: *Asterisk indicates current model
number digit A, B, C, etc. These
sensors can be ordered to ship with
the unit.
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