RT-SVX34F-EN 7
Model Number Description
60 Hz Description
Digit 1, 2 — Unit Function
TC = DX Cooling, No Heat
TE = DX Cooling, Electric Heat
YC = DX Cooling, Natural Gas Heat
Digit 3 — Unit Airflow Design
D = Downflow Supply and Return
H = Horizontal Supply and Return
F = Horizontal Supply and Upflow
Return
R = Downflow Supply and Horizontal
Return
Digit 4, 5, 6 — Nominal Cooling
Capacity
330 = 27½ Tons
360 = 30 Tons
420 = 35 Tons
480 = 40 Tons
600 = 50 Tons
Digit 7 — Major Development
Sequence
B = R-410A Refrigerant
Digit 8 — Power Supply
1
E = 208/60/3
F = 230/60/3
4 = 460/60/3
5 = 575/60/3
Digit 9 — Heating Capacity
4
0 = No Heat (TC only)
Note: The following digits apply to YC
units only.
L = Low Heat (YC only)
H = High Heat (YC only)
J = Low Heat-Stainless Steel Gas
Heat Exchanger (YC only)
K = High Heat-Stainless Steel Gas
Heat Exchangers (YC only)
M = Low Heat-Stainless Steel Gas
Heat Exchanger w/
Modulating control
(27.5-35 ton YC only)
P = High Heat-Stainless Steel Gas
Heat Exchangers w/
Modulating control
(27.5-35 ton YC only)
R = Low Heat-Stainless Steel Gas
Heat Exchanger w/
Modulating control
(40-50 ton YC only)
T = High Heat-Stainless Steel Gas
Heat Exchangers w/
Modulating control
(40-50 ton YC only)
YCD 330 B E L A 0 A1
123 456 7 8 9 10 11 1213
Note: The following digits apply to TE
units only.
A = 36 kW (27 kW for 208v)
B = 54 kW (41 kW for 208v)
C = 72 kW
D = 90 kW
E = 108 kW
Digit 10 — Design Sequence
A = First
Digit 11 — Exhaust
6
0= None
1 = Barometric Relief (Available
w/ Economizer only)
2 = 100% Power Exhaust Fan
(Available w/ Economizer only)
3 = 50% Power Exhaust Fan
(Available w/ Economizer only)
4 = 100% Fresh Air Tracking Power
Exhaust Fan (Available
w/ Economizer only)
5 = 50% Fresh Air Tracking Power
Exhaust Fan (Available
w/ Economizer only)
6 = 100% Power Exhaust w/
Statitrac™
Digit 12 — Filter
A = 2” MERV 4, Std Eff, Throwaway
Filters
B = 2” MERV 8, High Eff, Throwaway
Filters
C = 4” MERV 8, High Eff, Throwaway
Filters
D = 4” MERV 14, High Eff, Throwaway
Filters
Digit 13 — Supply Fan Motor, HP
1= 7.5 Hp
2=10 Hp
3= 15 Hp
4 = 20 Hp
Digit 14 — Supply Air Fan Drive
Selections
3
A = 550 RPM H = 500 RPM
B = 600 RPM J = 525 RPM
C = 650 RPM K = 575 RPM
D = 700 RPM L = 625 RPM
E = 750 RPM M = 675 RPM
F = 790 RPM N = 725 RPM
G = 800 RPM
Digit 15 — Fresh Air Selection
A= No Fresh Air
B = 0-25% Manual Damper
C = 0-100% Economizer, Dry Bulb
Control
D = 0-100% Economizer,
Reference Enthalpy Control
E = 0-100% Economizer,
Differential Enthalpy Control
F = “C” Option and Low Leak
Fresh Air Damper
G = “D” Option and Low Leak
Fresh Air Damper
H = “E” Option and Low Leak
Fresh Air Damper
Digit 16 — System Control
1 = Constant Volume w/Zone
Temperature Control
2 = Constant Volume w/ Discharge Air
Control
4 = VAV Supply Air Temperature
Control w/Variable Frequency
Drive w/o Bypass
5 = VAV Supply Air Temperature
Control w/Variable Frequency
Drive and Bypass
6 = Single Zone VAV w/VFD w/o
Bypass
7 = Single Zone VAV w/VFD w/
Bypass
A = VAV Supply Air Temperature
Control w/VFD w/o Bypass w/
Motor Shaft Grounding Ring
B = VAV Supply Air Temperature
Control w/VFD w/Bypass w/Motor
Shaft Grounding Ring
C = Single Zone VAV w/VFD w/o
Bypass w/ Motor Shaft Grounding
Ring
D = Single Zone VAV w/VFD w/
Bypass w/Motor Shaft Grounding
Ring
Note: Zone sensors are not included
with option and must be ordered
as a separate accessory.
Miscellaneous Options
Digit 17
A = Service Valves
2
Digit 18
B = Through the Base Electrical
Provision
Digit 19
C = Non-Fused Disconnect Switch
w/External Handle
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