4 RT-SVX21N-EN
Model Number Description
Digit 1 - Unit Type
Y DX Cooling, Gas Heat
Digit2-Efficiency
S Standard Efficiency
H High Efficiency
Digit 3 - Airflow
C Convertible
Digit 4,5,6 - Nominal Gross
Cooling Capacity (MBh)
036 3Ton
048 4Ton
060 5Ton
072 6Ton
090 7½Ton, Single Compressor
092 7½Ton, Dual Compressor
102 8½ Ton
120 10 Ton
Digit 7 - Major Design Sequence
E R-410A Refrigerant
F MicrochannelType Condenser
Coils
24
Digit 8 - Voltage Selection
1 208/230/60/1
3 208-230/60/3
4 460/60/3
W 575/60/3
Digit 9 - Unit Controls
E Electromechanical
R ReliaTel™ Microprocessor
Digit 10 - Heating Capacity
L Low Heat
M Medium Heat
H High Heat
X Low Heat, Stainless Steel Heat
Exchanger
Y Medium Heat, Stainless Steel Heat
Exchanger
Z High Heat, Stainless Steel Heat
Exchanger
Digit 11 - Minor Design
Sequence
A First Sequence
21
B Second Sequence
20
Digit 12,13 - Service Sequence
** Factory Assigned
Digit 14 - Fresh Air Selection
0 No Fresh Air
A Manual Outside Air Damper 0-50%
4
B Motorized Outside Air Damper
0-50%
28
C Economizer, Dry Bulb 0-100%
without Barometric Relief
7
D Economizer, Dry Bulb 0-100%
with Barometric Relief
7
E Economizer, Reference Enthalpy
0-100% without Barometric Relief
3,7
F Economizer, Reference Enthalpy
0-100% with Barometric Relief
3,7
G Economizer, Comparative
Enthalpy 0-100% without
Barometric Relief
3,7
H Economizer, Comparative
Enthalpy 0-100% with Barometric
Relief
3,7
Digit 15 - Supply Fan/DriveType/
Motor
0 Standard Drive
6
1 Oversized Motor
2 Optional Belt Drive Motor
18
6 Single Zone VAV
26
7 Multi-Speed Indoor Fan
27
E VAV Supply AirTemperature Control
Standard Motor
33
Digit 16 - Hinged Service
Access/Filters
0 Standard Panels/Standard Filters
A Hinged Access Panels/Standard
Filters
B Standard Panels/2” MERV 8 Filters
C Hinged Access Panels/2” MERV 8
Filters
D Standard Panels/2” MERV 13 Filters
E Hinged Access Panels/2” MERV 13
Filters
Digit 17 - Condenser Coil
Protection
0 Standard Coil
1 Standard Coil with Hail Guard
2 Black Epoxy Pre-Coated Condenser
Coil
25
3 Black Epoxy Pre-Coated
Condenser Coil with Hail Guard
25
4 CompleteCoat™ Condenser Coil
5 CompleteCoat™ Condenser Coil
with Hail Guard
Digit 18 - Through-the-Base
Provisions
0 NoThrough-the-Base Provisions
A Through-the-Base Electric
8
B Through-the-Base Gas Piping
16
C Through-the-Base Electric and Gas
Piping
16
Digit 19 - Disconnect/Circuit
Breaker (three-phase only)
0 No Disconnect/No Circuit Breaker
1 Unit Mounted Non-Fused
Disconnect
8
2 Unit Mounted Circuit Breaker
8
Digit 20 - Convenience Outlet
0 No Convenience Outlet
A Unpowered Convenience Outlet
B Powered Convenience Outlet
(three-phase only)
9
Digit 21 - Communications
Options
3
0 No Communications Interface
1 Trane Communications Interface
2 LonTalk® Communications Interface
1 Trane Communications Interface
2 LonTalk® Communications
Interface
3 Novar 2024 Controls
30
4 Novar 3051 Controls without Zone
Sensor
30
5 Novar 3051Controls Interface with
DCV
30
6 BACnet™ Communications Interface
6 BACnet™ Communications Interface
Digit 22 - Refrigeration System
Option
0 Standard Refrigeration System
10
B Dehumidification Option
22,23
Digit 23 - Refrigeration Controls
Note: Applicable to Digit7=E,F
0 No Refrigeration Control
5
1 Frostat
11 ,29
2 Crankcase Heater
2
3 Frostat
11 ,29
and Crankcase Heater
2
Digit 24 - Smoke Detector
17
0 No Smoke Detector
A Return Air Smoke Detector
12,13
B Supply Air Smoke Detector
C Supply and Return Air Smoke
Detectors
12,13
D Plenum Smoke Detector
Digit 25 - System Monitoring
Controls
0 No Monitoring Control
14
1 Clogged Filter Switch
14
2 Fan Failure Switch
14
3 Discharge Air SensingTube
14
4 Clogged Filter Switch and Fan
Failure Switch
14
5 Clogged Filter Switch and Discharge
Air SensingTube
14
6 Fan Failure Switch and Discharge Air
SensingTube
14
7 Clogged Filter Switch, Fan Failure
Switch and Discharge Air
SensingTube
14
8 Novar Return Air Sensor
(NOVAR 2024)
15,30
9 Novar Zone Temp Sensor
(NOVAR 3051)
19,30
A Condensate Drain Pan Overflow
Switch
B Clogged Filter Switch
14
and
Condensate Drain Pan Overflow
Switch
C Fan Failure Switch
14
and Condensate
Drain Pan Overflow Switch
D Discharge Air Sensing
14
and
Condensate Drain Pan Overflow
Switch
E Clogged Filter Switch
14
, Fan Failure
Switch
14
and Condensate Drain Pan
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