Trane TCD330B, TCD360B, TCD420B, TCD480B, TCD600B Installation And Maintenance Manual

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Installation, Operation, and Maintenance

Voyager™ Commercial

27.5 to 50 Ton 60 Hz

22.9 to 41.7 Ton 50 Hz CV, VAV, or SZ VAV Rooftop Air Conditioners with ReliaTel™ Controls, R-410A Refrigerant

Model Numbers

“B” and later design sequence TC*, TE*, YC*330B, 360B, 420B, 480B, 600B (60 Hz/3 phase) TC*, TE*, YC*275B, 305B, 350B, 400B, 500B (50 Hz/3 phase)

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.

August 2012 RT-SVX34F-EN

SAFETY WARNING

Warnings, Cautions and Notices

Warnings, Cautions and Notices. Note that warnings,

cautions and notices appear at appropriate intervals throughout this manual. Warnings are provided to alert installing contractors to potential hazards that could result in personal injury or death. Cautions are designed to alert personnel to hazardous situations that could result in personal injury, while notices indicate a situation that could result in equipment or property-damage-only accidents.

Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

ATT EN TI ON : Warnings, Cautions and Notices appear at

appropriate sections throughout this literature. Read these carefully:

WARNING

CAUTIONs

NOTICE:

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.

Indicates a situation that could result in equipment or property-damage only

Personal Protective Equipment (PPE) Required!

Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards.

• Before installing/servicing this unit, technicians MUST put on all Personal Protective Equipment (PPE) recommended for the work being undertaken. ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE.

• When working with or around hazardous chemicals, ALWAYS refer to the appropriate MSDS sheets and OSHA guidelines for information on allowable personal exposure levels, proper respiratory protection and handling recommendations.

• If there is a risk of arc or flash, technicians MUST put on all Personal Protective Equipment (PPE) in accordance with NFPA 70E or other country-specific requirements for arc flash protection, PRIOR to servicing the unit.

Failure to follow recommendations could result in death or serious injury.

WARNI NG

Important Environmental Concerns!

Scientific research has shown that certain man-made chemicals can affect the earth’s naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerantsincluding industry replacements for CFCs such as HCFCs and HFCs.

Responsible Refrigerant Practices!

Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

WARNI NG

Proper Field Wiring and Grounding Required!

All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes. Failure to follow code could result in death or serious injury.

Overview of Manual

One copy of the appropriate service literature ships inside the control panel of each unit. The procedures discussed in this manual should only be performed by qualified, experienced HVAC technicians.

Note: Do not release refrigerant to the atmosphere! If

adding or removing refrigerant is required, the service technician must comply with all federal, state, and local laws.

This booklet describes the proper installation, startup, operation, and maintenance procedures for TC_, TE_, and YC_22.9 to 50 Ton CV (Constant Volume), VAV (Variable Air Volume), and SZ VAV (Single Zone Variable Air Volume) applications. Refer to the table of contents for a listing of specific topics. Refer to “Diagnostics,” p. 104 for troubleshooting information.

By carefully reviewing the information within this manual and following the instructions, the risk of improper operation and/or component damage will be minimized.

It is important that periodic maintenance be performed to help assure trouble free operation. A maintenance schedule is provided at the end of this manual. Should equipment failure occur, contact a qualified service organization with qualified, experienced HVAC technicians to properly diagnose and repair this equipment.

Revision History

RT-SVX34F-EN (10 August 2012)

• Motors with Internal Shaft Grounding Ring

• Updated Model Number Description, Installation Electrical, Unit Wiring Diagrams

Warnings, Cautions and Notices

60 Hz units with standard options are certified by Underwriters Laboratory.

RT-SVX34F-EN 3

Table of Contents

Model Number Description . . . . . . . . . . . . . . . 7

60 Hz Description . . . . . . . . . . . . . . . . . . . . . . 7

50 Hz Description . . . . . . . . . . . . . . . . . . . . . . 9

General Information . . . . . . . . . . . . . . . . . . . . 11

Commonly Used Acronyms and Abbrevia-

tions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

About the Unit . . . . . . . . . . . . . . . . . . . . . 11

Precautionary Measures . . . . . . . . . . . . . 12

Unit Inspection . . . . . . . . . . . . . . . . . . . . . 12

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Unit Dimensions and Weights . . . . . . . . . . . 13

Recommended Clearances . . . . . . . . . . . . . 13

Roof Curb and Ductwork . . . . . . . . . . . . . . . 13

Horizontal Ductwork . . . . . . . . . . . . . . . . . 13

Unit Rigging and Placement . . . . . . . . . . . 19

Installation General Requirements . . . . . . . 21

Condensate Drain Connection . . . . . . . . . . 21

O/A Sensor & Tubing Installation . . . . . . . 21

Units with Statitrac™ . . . . . . . . . . . . . . . . . 21

Installation Electrical . . . . . . . . . . . . . . . . . . . . 23

Disconnect Switch External Handle (Factory Mounted Option)

. . . . . . . . . . . . . . . . . . . . . 23

Main Power Wiring . . . . . . . . . . . . . . . . . . . 23

Through-the-Base Electrical (Optional Acces-

sory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Electrical Wire Sizing and Protection Device Equations

Low Voltage Wiring . . . . . . . . . . . . . . . . . 28

Control Power Transformer . . . . . . . . . . . 28

Field Installed AC Control Wiring . . . . . . 28

Field Installed DC Control Wiring . . . . . . 29

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Remote Panels and Sensors . . . . . . . . . . . 32

Constant Volume and Single Zone VAV Con-

trol Options . . . . . . . . . . . . . . . . . . . . . . . . 32

Variable Air Volume (non-SZ VAV) Control

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Installation Piping . . . . . . . . . . . . . . . . . . . . . . 36

General Requirements . . . . . . . . . . . . . . . . 36

Connecting the Gas Supply Line to the Fur-

nace Gas Train . . . . . . . . . . . . . . . . . . . . . 36

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Unit Control Modules . . . . . . . . . . . . . . . . . .38

RTRM - ReliaTel Refrigeration Module . . .38

ECA - Economizer Actuator (Optional) . . .38

PEA - Power Exhaust Actuator (Optional) 38

RTAM - ReliaTel Air Handler Module (Stan-

dard with Traditional VAV) . . . . . . . . . . . .38

Conventional Thermostat Connections

(Available Only with CV) . . . . . . . . . . . . . .39

TCI - Trane Communication Interface (Option-

al) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

LCI - LonTalk® Communication Interface (Op-

tional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

BCI - BACnet® Communication Interface (Op-

tional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Manual Motor Protectors (380V Through

575V Only) . . . . . . . . . . . . . . . . . . . . . . . . .40

System Operation . . . . . . . . . . . . . . . . . . . . .40

Economizer Operation with a Conventional

Thermostat (CV Only) . . . . . . . . . . . . . . . .40

Microelectronic Control Features . . . . . . .40

Economizer Operation with CV Controls .41

Modulating Power Exhaust . . . . . . . . . . . .41

Mechanical Cooling without an Economizer

(CV and SZ VAV) . . . . . . . . . . . . . . . . . . . . 42

Zone Temperature - Occupied Cooling (CV

and SZ VAV) . . . . . . . . . . . . . . . . . . . . . . . .42

Zone Temperature - Occupied Heating (CV

and SZ VAV) . . . . . . . . . . . . . . . . . . . . . . . .42

Supply Fan (CV and SZ VAV) . . . . . . . . . .42

Supply Air Tempering (CV and SZ VAV) .42

Variable Air Volume Applications (Single Zone VAV)

Supply Fan Output Control . . . . . . . . . . . .43

Minimum Supply Fan Output . . . . . . . . . .43

Supply Fan Mode Operation . . . . . . . . . . .43

Setpoint Arbitration . . . . . . . . . . . . . . . . . .44

Ventilation Control . . . . . . . . . . . . . . . . . . .44

Space Pressure Control . . . . . . . . . . . . . . .46

Supply Air Temperature Control - Heating

and Cooling . . . . . . . . . . . . . . . . . . . . . . . . 46

. . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4 RT-SVX34F-EN

Table of Contents

Variable Air Volume Applications (Traditional VAV)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Supply Air Temperature Control - Occupied

Cooling and Heating . . . . . . . . . . . . . . . . 47

Supply Air Temperature Control with an

Economizer . . . . . . . . . . . . . . . . . . . . . . . . 47

VHR Relay Output . . . . . . . . . . . . . . . . . . . 47

Zone Temperature Control without a  Night Setback Panel or ICS - Unoccupied

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Zone Temperature Control without a  Night Setback Panel or ICS - Unoccupied

Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Morning Warm-up (MWU) Control . . . . . 47

Daytime Warm-up (DWU) Control . . . . . 47

Supply Duct Static Pressure Control . . . 48

Supply Air Temperature Reset . . . . . . . . 48

VAV Supply Air Tempering (Only Available

with Modulating Gas Heat) . . . . . . . . . . . 48

Constant Volume or Variable Air Volume Applications (Single Zone or Traditional)

Off Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Zone Temperature - Unoccupied Cooling (CV

or SZ VAV Only) . . . . . . . . . . . . . . . . . . . . 49

Zone Temperature - Unoccupied Heating 49

Mechanical Cooling with an Economizer 49

Gas Heat Control . . . . . . . . . . . . . . . . . . . 49

Electric Heat Control . . . . . . . . . . . . . . . . 50

Clogged Filter Option . . . . . . . . . . . . . . . . 50

Ventilation Override . . . . . . . . . . . . . . . . . 50

Emergency Stop . . . . . . . . . . . . . . . . . . . . 50

Phase Monitor . . . . . . . . . . . . . . . . . . . . . 50

Low Pressure Control . . . . . . . . . . . . . . . . 51

Dehumidification Low Pressure Control . 51

High Pressure Cutout and Temperature Dis-

charge Limit . . . . . . . . . . . . . . . . . . . . . . . 51

Power Exhaust Control (Standard) . . . . . 51

Space Pressure Control - Statitrac . . . . . 51

Power Exhaust Control (Tracking) . . . . . 52

Lead/Lag Control . . . . . . . . . . . . . . . . . . . 52

Coil Frost Protection . . . . . . . . . . . . . . . . . 52

Dehumidification Frost Protection . . . . . 52

VFD Programming Parameters . . . . . . . . 52

. . . 49

Condenser Fan Sequencing Control . . . . .52

Preparing the Unit for Operation . . . . . . . .53

Electrical Phasing . . . . . . . . . . . . . . . . . . . .54

Voltage Supply and Voltage Imbalance . .54

Starting the Unit . . . . . . . . . . . . . . . . . . . . . . .55

Test Modes . . . . . . . . . . . . . . . . . . . . . . . . .55

Verifying Proper Fan Rotation . . . . . . . . . .59

Verifying Proper Air Flow (CFM) - 

CV or VFD's . . . . . . . . . . . . . . . . . . . . . . . . .59

Exhaust Fan Operation . . . . . . . . . . . . . . .72

Economizer Damper Adjustment . . . . . . . .74

Economizer (O/A) Dampers . . . . . . . . . . . .74

Manual Fresh Air Damper . . . . . . . . . . . . .75

Starting the Compressor . . . . . . . . . . . . . . .76

Starting 27.5 to 35 Ton Units . . . . . . . . . . 76

Starting 40 to 50 Ton Units . . . . . . . . . . . . 76

Compressor Oil . . . . . . . . . . . . . . . . . . . . .77

Scroll Compressor Operational Noises . .85

Compressor Crankcase Heaters . . . . . . . .85

Charging by Subcooling . . . . . . . . . . . . . .85

Measuring Subcooling . . . . . . . . . . . . . . .85

Gas Heat Units . . . . . . . . . . . . . . . . . . . . . . . . 85

Electric Heat Units . . . . . . . . . . . . . . . . . . . . .86

Final Unit Checkout . . . . . . . . . . . . . . . . . . . .86

For Constant Volume Units . . . . . . . . . . . .86

For Variable Air Volume Units . . . . . . . . .86

For Single Zone Variable Air Volume 

Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . .88

General Unit Requirements . . . . . . . . . . . . .88

Downflow/Upflow Models: . . . . . . . . . . . .88

All Units: . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Electrical Requirements . . . . . . . . . . . . . . . .88

Field Installed Control Wiring . . . . . . . . . . 88

Gas Heat Requirements . . . . . . . . . . . . . . . .88

Sequence of Operation . . . . . . . . . . . . . . . . . . .89

Mechanical Cooling Sequence  Of Operation

Units Without an Economizer . . . . . . . . . .89

Economizer Operation Based on Dry Bulb 89

. . . . . . . . . . . . . . . . . . . . . . . . . .89

RT-SVX34F-EN 5

Table of Contents

Economizer Operation Based on Reference

Enthalpy . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Economizer Operation Based on Compara-

tive Enthalpy . . . . . . . . . . . . . . . . . . . . . . . 90

Dehumidification (Modulating Hot Gas Reheat) Sequence of Operation

. . . . . . . . . . . 90

Gas Heat Sequence Of Operation . . . . . . . 91

Constant Volume (CV) Unit Fan Operation 91

Variable Air Volume (VAV) Unit Fan Operation (2 Stage and Modulating Gas Heat) 91

Variable Air Volume (VAV) Unit Fan Opera-

tion (Modulating Gas Heat Only) . . . . . . 92

Ignition Control Module . . . . . . . . . . . . . . 92

High Temperature Limit Operation and Loca-

tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Electric Heat Sequence Of Operation . . . . 92

Constant Volume (CV) . . . . . . . . . . . . . . . 92

Variable Air Volume (VAV) . . . . . . . . . . . 92

Variable Air Volume Applications (Single Zone VAV) Sequence of Operation

Occupied Cooling Operation . . . . . . . . . . 92

Occupied Heating Operation . . . . . . . . . . 93

Unoccupied Cooling and 

Heating Operation . . . . . . . . . . . . . . . . . . 94

Dehumidification Operation . . . . . . . . . . 94

Failure and Overriding Conditions . . . . . 95

. . . . . . 92

Low Pressure Control (LPC) Sequence of Operation (ReliaTel Control)

. . . . . . . . . . . . . . 95

High Pressure Control and Temperature Discharge Limit (ReliaTel Control)

. . . . . . . . . 95

Electrical Phasing . . . . . . . . . . . . . . . . . . .102

Precision Suction Restrictor . . . . . . . . . .102

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

System Status/Diagnostics . . . . . . . . . . . .104

Terminal locations . . . . . . . . . . . . . . . . . . 104

System Status / Diagnostics checkout proce-

dure (DC volt meter required) . . . . . . . . . 104

Diagnostics (CV and SZ VAV Units Only) 105

Diagnostics (VAV only) . . . . . . . . . . . . . .105

Resetting Cooling and Ignition Lockouts 106

Zone Temperature Sensor (ZSM) Service In-

dicator . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

RTRM Zone Sensor Module (ZSM) Tests 107

Programmable & Digital Zone Sensor 

Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

ReliaTel Refrigeration Module (RTRM) .108

Economizer Actuator (ECA) 

Test Procedures . . . . . . . . . . . . . . . . . . . .108

ReliaTel Air Module (RTAM) Tests . . . . .109

ReliaTel Air Module (RTOM) Tests . . . . .110

Compressor—Blink Codes . . . . . . . . . . . .110

Troubleshooting . . . . . . . . . . . . . . . . . . . . . .111

TR-200 VFD Programming Parameters . .116

Unit Wiring Diagram Numbers . . . . . . . . . . .118

Warranty and Liability Clause . . . . . . . . . . . .122

COMMERCIAL EQUIPMENT - 20 TONS AND LARGER AND RELATED ACCESSORIES

.122

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Fan Belt Adjustment . . . . . . . . . . . . . . . . . . 96

Monthly Maintenance . . . . . . . . . . . . . . . . . 98

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Cooling Season . . . . . . . . . . . . . . . . . . . . 98

Heating Season . . . . . . . . . . . . . . . . . . . . 99

Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . 100

Fall Restraint . . . . . . . . . . . . . . . . . . . . . . . . 100

Refrigeration System . . . . . . . . . . . . . . . . . 101

Refrigerant Evacuation and Charging . 101

Charge Storage . . . . . . . . . . . . . . . . . . . . 101

Compressor Oil . . . . . . . . . . . . . . . . . . . . 101

Compressor Replacements . . . . . . . . . . . 102

6 RT-SVX34F-EN

Model Number Description

YCD 330 B E L A 0 A1

123 456 7 8 9 10 11 1213

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

E = 208/60/3 F = 230/60/3 4 = 460/60/3 5 = 575/60/3

Digit 9 — Heating Capacity

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)

Note: The following digits apply to TE

A = 36 kW (27 kW for 208v) B = 54 kW (41 kW for 208v) C = 72 kW D = 90 kW E = 108 kW

units only.

Digit 10 — Design Sequence

A = First

Digit 11 — Exhaust

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

B = 2” MERV 8, High Eff, Throwaway

C = 4” MERV 8, High Eff, Throwaway

D = 4” MERV 14, High Eff, Throwaway

Filters

Filters

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

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

Digit 18

B = Through the Base Electrical

Provision

Digit 19

C = Non-Fused Disconnect Switch

w/External Handle

RT-SVX34F-EN 7

Model Number Description

Digit 20

D = Factory-Powered 15A GFI

Convenience Outlet and  Non-Fused Disconnect Switch w/External Handle

Digit 21

E = Field-Powered 15A GFI

Convenience Outlet

Digit 22

F = Trane Communication

Interface (TCI)

Digit 23

G = Ventilation Override

Digit 24

H = Hinged Service Access

Digit 25

H = Tool-less Condenser Hail Guards J = Condenser Coil Guards

Digit 26

K = LCI (LonTalk) B = BACnet Communications

Interface (BCI)

Digit 27

*=Unused Digit

Digit 28

M = Stainless Steel Drain Pans

Digit 29 — Condenser Coil Options

0 = Standard Efficiency

Condenser Coil

J = Corrosion Protected Condenser

Coil

Digit 30-31 — Miscellaneous Options

P = Discharge Temperature

Sensor

R = Clogged Filter Switch

Digit 32 — Dehumidification Option

T = Modulating Hot Gas Reheat

Model Number Notes

1. All voltages are across the line

starting only.

2. Option includes Liquid, Discharge,

Suction Valves.

3. Supply air fan drives A thru G are

used with 27½-35 ton units only and drives H thru N are used with 40 & 50 ton units only.

4. Electric Heat KW ratings are based

upon voltage ratings of 208/240/480/ 600 V. For a 240 V heater derated to 208 V, the resulting kW rating decreases from 36 kW to 27 kW, and from 54 kW to 41 kW. Voltage

offerings are as follows: (see Tab l e 17,

p. 46 for additional information):

Electric

Heater

Rated

Tons

Voltage

27½

to 35

and

5. The service digit for each model number contains 32 digits; all 32 digits must be referenced.

6. Ventilation override exhaust mode is not available for the exhaust fan with fresh air tracking power exhaust. VOM is available for the exhaust fan without fresh air tracking power exhaust.

27/3641/

208 x x

240 x x

480 xxxx

600 x x x

208 x

240 x

480 x x x x

600 x x x x

54 72 90 108

8 RT-SVX34F-EN

Model Number Description

YCD 275 B C L A 0 A1

123 456 7 8 9 10 11 1213

50 Hz Description

Digits 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

Digits 4, 5, 6 – Nominal Cooling Capacity

275 = 22.9 Tons (82 kW) 305 = 25.4 Tons (89 kW) 350 = 29.2 Tons (105 kW) 400 = 33.3 Tons (120 kW) 500 = 41.7 Tons (148 kW)

Digit 7 – Major Development Sequence

B = R-410A Refrigerant

Digit 8 – Power Supply

C = 380/50/3 D = 415/50/3

Digit 9 – Heating Capacity

0 = No Heat (TC only) L = Low Heat (YC only) H = High Heat (YC only)

Note: When second digit is “E” for

Electric Heat, the following values apply in the ninth digit.

380V / 415V

A = 23 kW / 27 kW B = 34 kW / 40 kW C = 45 kW / 54 kW D = 56 kW / 67 kW E = 68 kW / 81 kW

Digit 10 – Design Sequence

A= First

Digit 11 – Exhaust6

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” (51 MM) MERV 4, Std Eff,

B = 2” (51 MM) MERV 8, High Eff,

C = 4” (102 MM) MERV 8, High Eff,

D = 4” (102 MM) MERV 14, High Eff,

Throwaway Filters

Throwaway Filters

Throwaway Filters

Digit 13 – Supply Fan Motor, HP

1 = 7.5 Hp (5.6 kW) 2 = 10 Hp (7.5 kW) 3=15 Hp (10 kW) 4 = 20 Hp (15 kW)

Digit 14 – Supply Air Fan Drive Selections

A = 458 RPM H = 417 RPM B = 500 RPM J = 437 RPM C = 541 RPM K = 479 RPM D = 583 RPM L = 521 RPM E = 625 RPM M = 562 RPM F = 658 RPM N = 604 RPM G = 664 RPM

Digit 15 – Fresh Air Selection

A= No Fresh Air B = 0-25% Manual Damper C = 0-100% Economizer, Dry Bulb

D = 0-100% Economizer,

E = 0-100% Economizer,

F = “C” Option and Low Leak

G = “D” Option and Low Leak

H = “E” Option and Low Leak

Control

Reference Enthalpy Control

Differential Enthalpy Control

Fresh Air Damper

Fresh Air Damper

Digit 16 – System Control

1 = Constant Volume w/ Zone

2 = Constant Volume w/ Discharge Air

4 = VAV Supply Air Temperature

5 = VAV Supply Air Temperature

6 = Single Zone VAV w/VFD w/o

7 = Single Zone VAV w/VFD w/

A = VAV Supply Air Temperature

B = VAV Supply Air Temperature

Temperature Control

Control

Control w/Variable Frequency Drive w/o Bypass

Control w/Variable Frequency Drive and Bypass

Bypass

Control w/VFD w/o Bypass w/ Motor Shaft Grounding Ring

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

Digit 18

B = Through the Base Electrical

Provision

Digit 19

C = Non-Fused Disconnect Switch

with External Handle



Digit 20

D= Factory-Powered 15A GFI

Convenience Outlet and  Non-Fused Disconnect Switch with External Handle

Digit 21

E = Field-Powered 15A GFI

Convenience Outlet

Digit 22

F = Trane Communication

Interface (TCI)

Digit 23

G = Ventilation Override

Digit 24

H = Hinged Service Access

Digit 25

H = Tool-less Condenser Hail Guards J = Condenser Coil Guards

Digit 26

K = LCI (LonTalk) B = BACnet Communications

Interface (BCI)

Digit 27

* = Unused Digit

Digit 28

M = Stainless Steel Drain Pans

Digit 29 — Condenser Coil Options

0 = Standard Efficiency 

Condenser Coil

J = Corrosion Protected Condenser

Coil

RT-SVX34F-EN 9

Model Number Description

Digit 30-31 — Miscellaneous Options

P = Discharge Temperature Sensor R = Clogged Filter Switch

Digit 32 — Dehumidification Option

T = Modulating Hot Gas Reheat

Model Number Notes

1. All voltages are across-the-line starting only.

2. Option includes Liquid, Discharge, Suction Valves.

3. Supply air fan drives A thru G are used with 22.9-29.2 ton (82-105 kW) units only and drives H through N are used with 33.3 and 41.7 ton (120-148 kW) units only.

4. Electric Heat kW ratings are based upon voltage ratings of 380/415 V. Heaters A, B, C, D are used with 22.9-

29.2 ton (82-105 kW) units only and heaters B, C, D, E are used with 33.3-

41.7 ton (120-148 kW) units only.

5. The service digit for each model number contains 32 digits; all 32 digits must be referenced.

6. Ventilation override exhaust mode is not available for the exhaust fan with fresh air tracking power exhaust. VOM is available for the exhaust fan without fresh air tracking power exhaust.

10 RT-SVX34F-EN

General Information

Commonly Used Acronyms and Abbreviations

BAS = Building Automation System PGA = Power Exhaust Actuator

CFM = Cubic Feet per Minute PSIG = Pounds Per Square Inch Gauge pressure

CLV = Cooling Valve (Reheat only) PHM = Phase monitor

COMM = Module Designation for TCI/LCI R/A = Return Air

CV = Constant Volume RAH = Return Air Humidity

CW = Clockwise RAT = Return Air Temperature sensor

CCW = Counterclockwise RH = Right Hand

DSP = Direct Space Pressure control RHP = Reheat Pumpout Solenoid

DTS = Discharge Air Sensor RHV = Reheat Valve

DWU = Daytime Warm-up RLP = Reheat Low Pressure Cutout

E/A = Exhaust Air RPM = Revolutions Per Minute

ECA = Economizer Actuator RTAM = ReliaTel Air Handler Module

EET = Entering Evaporator Temperature Sensor RTDM = ReliaTel Dehumidification Module

F/A = Fresh Air RTVM = ReliaTel Ventilation Module

FFS = Fan Failure Switch RTOM = ReliaTel Options Module

ICS = Integrated Comfort System (See BAS) RTRM = ReliaTel Refrigeration Module

IDM = Indoor Fan Motor S/A = Supply Air

I/O = Input/Output SPC = Space Pressure Calibration Solenoid

IOM =

LCI = LonTalk® Communication Interface SPT = Static Pressure Transducer

LCI-R = LonTalk Communication Interface with ReliaTel SZVAV = Single Zone Variable Air Volume

LH = Left Hand TCI = Trane Communication Interface

MAS = Mixed Air Sensor TCO = Temperature Cutout

MAT = Mixed Air Temperature TDL = Temperature Discharge Limit

MCHE Microchannel VAV = Variable Air Volume

MWU = Morning Warm Up VFD = Variable Frequency Drive

NSB = Night Setback (programmable ZSM BAYSENS119*) VHR = Ventilation Heat Relay (VAV box relay)

O/A = Outside Air W.C. = Water Column

OAH = Outside Air Humidity XFSP = Exhaust Fan Setpoint

OAT = Outside Air Temperature ZSM = Sensor, Zone Sensor, Zone Sensor Module, Zone Panel

Installation, Operation and Maintenance manual (Ships with each unit)

SPP = Space Pressure Transducer

About the Unit

Overall unit dimensional data is illustrated in Figure 1,

p. 13 to Figure 9, p. 17. Each package rooftop unit ships

fully assembled and charged with the proper refrigerant quantity from the factory. They are controlled by a microelectronic unit control processor. Several solid state modules are grouped to form the “Control System”. The number of modules within any given control system will be dependent upon the options and accessories ordered with the unit. Acronyms are used extensively throughout this manual when referring to the “Control System”.

RT-SVX34F-EN 11

Basic unit components include:

• Scroll compressors

• One (1) Intertwined Evaporator Coil

• One (1) Supply Fan

• Three (3) to Four (4) Condenser Fans

• One (1) Microchannel Condenser Coil

• Filters (type is dependent on option selection)

General Information

Precautionary Measures

WARN ING

Fiberglass Wool!

Product contains fiberglass wool. Disturbing the insulation in this product during installation, maintenance or repair will expose you to airborne particles of glass wool fibers and ceramic fibers known to the state of California to cause cancer through inhalation. You MUST wear all necessary Personal Protective Equipment (PPE) including gloves, eye protection, mask, long sleeves and pants when working with products containing fiberglass wool. Exposition to glass wool fibers without all necessary PPE equipment could result in cancer, respiratory, skin or eye irritation, which could result in death or serious injury.

- Avoid breathing fiberglass dust.

- Use a NIOSH approved dust/mist respirator.

- Avoid contact with the skin or eyes. Wear long-sleeved,

loose-fitting clothing, gloves, and eye protection.

- Wash clothes separately from other clothing: rinse

washer thoroughly.

- Operations such as sawing, blowing, tear-out, and

spraying may generate fiber concentrations requiring additional respiratory protection. Use the appropriate NIOSH approved respiration in these situations.

First Aid Measures

Eye Contact - Flush eyes with water to remove dust. If symptoms persist, seek medical attention.

Skin Contact - Wash affected areas gently with soap and warm water after handling.

An optional roof curb, specifically designed for the Voyager commercial rooftop units is available from Trane. The roof curb kit must be field assembled and installed according to the latest edition of the curb installation guide.

Unit Inspection

As soon as the unit arrives at the job site:

• Verify that the nameplate data corresponds to the sales order and bill of lading (including electrical data).

• Visually inspect the exterior of the unit, including the roof, for physical signs of shipping damage.

• Check for material shortages. Figure 11 , p. 18 illustrates where “ship with” items are placed inside the unit.

If the job site inspection reveals damage or material shortages, file a claim with the carrier immediately. Specify the type and extent of the damage on the “bill of lading” before signing. Do not install a damaged unit without the Appropriate Trane sales representative's approval!

• Visually check the internal components for shipping damage as soon as possible after delivery and before it is stored. Do not walk on the sheet metal base pans.

WARNI NG

No Step Surface!

Do not walk on the sheet metal drain pan. Walking on the drain pan could cause the supporting metal to collapse, resulting in the operator/technician to fall. Failure to follow this recommendation could result in death or serious injury.

Bridging between the unit's main supports may consist of multiple 2 by 12 boards or sheet metal grating.

• If concealed damage is discovered, notify the carrier's terminal office immediately by phone and by mail. Concealed damage must be reported within 15 days.

• Request an immediate joint inspection of the damage by the carrier and the consignee. Do not remove the damaged material from the receiving location. Take photos of the damage, if possible. The owner must provide reasonable evidence that the damage did not occur after delivery.

Storage

Take precautions to prevent condensate formation inside the unit electrical components and motors when:

a. The unit is stored before it is installed; or,

b. The unit is set on the roof curb and temporary

auxiliary heat is provided in the building.

Isolate all side panel service entrances and base pan openings (e.g., conduit holes, S/A and R/A openings, and flue openings) to minimize ambient air from entering the unit until it is ready for startup.

Do not use the unit heater as temporary heat without completing the startup procedures detailed under

“Startup,” p. 38.

Trane will not assume responsibility for equipment damage resulting from accumulation of condensate on the unit electrical components.

12 RT-SVX34F-EN

Unit Dimensions and Weights

Recommended Clearances

Adequate clearance around and above each Voyager Commercial unit is required to ensure proper operation and to allow sufficient access for servicing.

If the unit installation is higher than the typical curb elevation, a field constructed catwalk around the unit is recommended to provide safe, easy access for maintenance and servicing. Table 1, p. 19 lists the recommended clearances for single and multiple unit installation. These clearances are necessary to assure adequate serviceability, cataloged capacities, and peak operating efficiency.

If the clearances available on the job site appear to be inadequate, review them with your Trane sales representative.

Roof Curb and Ductwork

The curbs for the 27.5 to 50 Ton commercial rooftop units enclose the entire unit base area. They are referred to as “full perimeter” type curbs.

Step-by-step instructions for the curb assembly and installation with curb dimensions and curb configuration for “A”, “B”, and “C” cabinets ship with each Trane accessory roof curb kit. (See the latest edition of the curb installation guide) Follow the instructions carefully to assure proper fit when the unit is set into place.

The S/A and R/A ductwork adjoining the roof curb must be fabricated and installed by the installing contractor before the unit is set into place. Trane curbs include flanges around the openings to accommodate duct attachment.

Ductwork installation recommendations are included in the instruction booklet that ships with each Trane accessory roof curb kit.

Note: For sound consideration, cut only the holes in the

roof deck for the supply and return duct penetration. Do Not remove the roof decking from the inside perimeter of the curb.

the unit into the ductwork. Refer to figures beginning on page 13 for the S/A and R/A opening dimensions.

All outdoor ductwork between the unit and the structure should be weather proofed after installation is completed.

If optional power exhaust is selected, an access door must be field-installed on the horizontal return ductwork to provide access to exhaust fan motors.

Figure 1. 60 Hz 27½-35, 50 Hz 23-29 Tons (TCD, TED,

YCD l ow heat)

If a Trane curb accessory kit is not used:

a. The ductwork can be attached directly to the S/A

and R/A openings. Be sure to use a flexible duct connector at the unit.

b. For “built-up” curbs supplied by others, gaskets

must be installed around the curb perimeter flange, Supply Air opening, and Return Air openings.

c. Insulation must be installed on the bottom of the

condenser section of the unit.

Horizontal Ductwork

When attaching the ductwork to a horizontal supply or horizontal return unit, provide a water tight flexible connector at the unit to prevent noise transmission from

RT-SVX34F-EN 13

Unit Dimensions and Weights

1 1/4 (32)

3 1/4 (81)

NOTES:

1. SEE DETAIL HOOD DRAWING FOR HORIZONTAL / DOWNFLOW UNITS FOR ADDITIONAL DIMENSION AND LOCATION.

179 3/4"

4565.65mm

42"

1066.8mm

83 13/16"

2128.8mm

90 1/16"

2287.5mm

180 5/16"

4579.9mm

90 3/8"

2295.5mm

5 3/8"

136.5mm

7 9/16"

192.1mm

3.25 [82.55mm] TO TOP OF FAN GRILLE

70 7/16"

1789.1mm

40 3/16"

1020.7mm

6 7/8"

174.6mm

1 1/4" [31.7mm] FEMALE

PVC PIPE

3/4" [19.0mm] NPT GAS INLET

SEE NOTE 2

CUSTOMER CONNECTION POINT

Figure 2. Rear view showing duct openings for horizontal supply and return, 60 Hz 27½-35, 50 Hz 23-29 Tons (TCH,

TEH, YCH low heat)

Notes:

• For combination of horizontal and downflow openings

• On horizontal units, the VFD is located between the

supply and return ductwork, which makes access limited.

Figure 3. 60 Hz 27½-35, 50 Hz 23-29 Tons (TC, TE, YC low heat)

(digit 3 = F or R) see Figure 1, p. 13 for appropriate downflow/upflow dimensions and Figure 2, p. 14 for appropriate horizontal dimensions.

Note: Dimensions in ( ) are mm, 1”= 25.4 mm.

14 RT-SVX34F-EN

Figure 4. 60 Hz 27½-35, 50 Hz 23-29 Tons (YD high heat)

1 1/4 (32)

3 1/4 (81)

191

Figure 5. Duct openings, 60 Hz 27½-35, 50 Hz 23-29 Tons (YH high heat)

Unit Dimensions and Weights

Notes:

• On horizontal units, the VFD is located between the

supply and return ductwork, which makes access limited.

• For combination of horizontal and downflow openings (digit 3 = F or R) see Figure 4, p. 15 for appropriate downflow/upflow dimensions and Figure 5, p. 15 for appropriate horizontal dimensions.

RT-SVX34F-EN 15

Unit Dimensions and Weights

5270.5mm

207 1/2"

42"

5 3/8"

83 13/16"

2128.8mm

7 9/16"

208 1/16"

5284.7mm

90 5/8"

2301.8mm

90 1/16"

70 7/16"

40 3/16"

6 15/16"

PVC PIPE FEMALE

1" [25.4MM] NPT GAS INLET

NOTES:

1. SEE ROOFCURB DRAWING FOR DETAILS ON FIELD DUCT FITUP AND CONNECTIONS

2. SEE DETAIL HOOD DRAWING FOR HORIZONTAL / DOWNFLOW UNITS FOR ADDITIONAL DIMENSION AND LOCATION.

SEE NOTE 2

CUSTOMER CONNECTION POINT

1066.8mm

2287.5mm

136.5m

192.1m

3.25 [82.55mm] TO TOP OF FAN GRILLE

1789.1mm

1020.7mm

174.6mm

1 1/4" [31.7mm]

Figure 6. 60 Hz 27½-35, 50 Hz 23-29 Tons (YC high heat)

Note: Dimensions in ( ) are mm, 1”= 25.4 mm.

Figure 7. 60 Hz 40-50, 50 Hz 33-42 Tons (TD, TD, YD low and high heat)

16 RT-SVX34F-EN

Unit Dimensions and Weights

1 1/4 (32)

3 1/4 (81)

7 9/16"

232 3/8"

5902.3mm

232 3/4"

5911.8mm

90 5/8"

49 9/16"

1258.8mm

93 3/8"

2371.7mm

5 5/16"

90 1/16"

77"

1955.8mm

46 15/16"

1192.2mm

4 3/4"

120.6mm

NOTES:

1. SEE ROOFCURB DRAWING FOR DETAILS ON FIELD DUCT FITUP AND CONNECTIONS

2. SEE DETAIL HOOD DRAWING FOR HORIZONTAL / DOWNFLOW UNITS FOR ADDITIONAL DIMENSION AND LOCATION.

SEE NOTE 2

CUSTOMER CONNECTION POINT

2301.8mm

PVC PIPE FEMALE

1" [25.4MM] NPT HIGH HEAT GAS INLET

2287.5mm

136.5m

192.1m

3.25 [82.55mm] TO TOP OF FAN GRILLE

1 1/4" [31.7mm]

3/4" [19MM] NPT LOW HEAT GAS INLET

Figure 8. Duct openings, 60 Hz 40-50, 50 Hz 33-42 Tons (TH, TH, YH low and high heat)

Notes:

• On horizontal units, the VFD is located between the

supply and return ductwork, which makes access limited.

• For combination of horizontal and downflow openings (digit 3 = F or R) see Figure 7, p. 16 for appropriate downflow/upflow dimensions and Figure 8, p. 17 for appropriate horizontal dimensions.

Figure 9. 60 Hz 40-50, 50 Hz 33-42 Tons (TC, TE, YC low and high heat)

Note: Dimensions in ( ) are mm, 1”= 25.4 mm.

RT-SVX34F-EN 17

Unit Dimensions and Weights

Figure 10. Fresh air and power exhaust dimensions for TC*, TE*, and YC* units

Figure 11. Location of “Ship With” items for TC*, TE*, and YC* units

18 RT-SVX34F-EN

Unit Dimensions and Weights

Unit Rigging and Placement

WARN ING

Heavy Objects!

Ensure that all the lifting equipment used is properly rated for the weight of the unit being lifted. Each of the cables (chains or slings), hooks, and shackles used to lift the unit must be capable of supporting the entire weight of the unit. Lifting cables (chains or slings) may not be of the same length. Adjust as necessary for even unit lift. Other lifting arrangements could cause equipment or property damage. Failure to follow instructions above or properly lift unit could result in unit dropping and possibly crushing operator/ technician which could result in death or serious injury.

Use spreader bars as shown in the diagram. Refer to the Installation manual or nameplate for unit weight. Refer to the Installation instructions located inside the control panel for further rigging information.

1. Verify that the roof curb has the proper gaskets installed and is level and square to assure an adequate curb-to-unit seal.

The units must be as level as possible in order to assure proper condensate flow out of the unit. The maximum side-to-side and end-to-end slope allowable in any application is listed in Table 2, p. 19.

Table 1. Minimum operating clearances installation

(horizontal, downflow, and mixed airflow configurations)

Recommended Clearances

Condenser

(a)

Coil

Single Unit

TC*, TE*, YC*

27.5 to 50 Tons

Multiple Unit

TC*, TE*, YC*

27.5 to 50 Tons

(a) Condenser coil is located at the end and side of the unit.

Economizer/ Exhaust End

6 Feet 8 Feet 4 Feet

Distance Between Units

Economizer/ Exhaust End End/Side

12 Feet 16 Feet 8 Feet

Orientation

End/Side

Service Side

Access

Service Side

Access

Table 2. Maximum slope

Cabinet

“A” (27.5 - 35 Ton Low Heat) 3 1/2 1 5/8

“B” (27.5 - 35 Ton High Heat) 4 1 5/8

“C” (All 40 and 50 Ton Units) 4 1/2 1 5/8

Note: Do not exceed these allowances. Correct the improper slope by

building up the curb base. The material used to raise the base must be adequate to support both the curb and the unit weight.

End to End

(inches)

Side to Side

(inches)

Figure 12. Unit rigging

Figure 13. Center of gravity

Z (see note 2)

Table 3. Center of gravity

Center-of-Gravity (inches)

YC Low Heat

Dimension

Unit Model

***330/275* 41 76 33 41 84 33 42 76 33

***360/305* 43 77 33 43 85 33 44 77 33

***420/350* 42 78 33 42 86 33 43 78 33

***480/400* 42 111 35 42 111 35 42 111 35

***600/500* 43 108 35 43 108 35 43 108 35

Note: Center-of-gravity dimensions are approximate, and are based on the

unit equipped with: standard efficiency coils, standard efficiency motors, economizer, and throwaway filters.

Note: Z dimension is upward from the base of the unit.

Example: Locating the center-of-gravity for a YC-360 MBH High Heat unit with 100%

exhaust. X = 43 inches inward from the control panel side Y = 85 inches inward from the compressor end Z = 33 inches upward from the base

XY ZXY ZXY Z

YC High Heat

Dimension

TC/TE

Dimension

RT-SVX34F-EN 19

Unit Dimensions and Weights

DE F

TOP VIEW OF UNIT

COMPRS

CBA

Table 4. Approximate units operating weights — lbs./

Unit

Model

**D330/275 3750 1701 4130 1873 3620 1642 3640 1651

**H330/275 3790 1719 4220 1914 3660 1660 3680 1669

**D360/305 3845 1744 4225 1916 3715 1685 3735 1694

**H360/305 3885 1762 4315 1957 3755 1703 3775 1712

**D420/350 3970 1801 4350 1973 3840 1742 3860 1751

**H420/350 4010 1819 4440 2014 3880 1760 3900 1769

**D480/400 4764 2161 4884 2215 4539 2059 4564 2070

**H480/400 4859 2204 4984 2261 4599 2091 4634 2102

**D600/500 5174 2347 5294 2401 4949 2245 4974 2256

**D600/500 5269 2390 5394 2447 5019 2277 5044 2288

Notes:

1. Basic unit weight includes minimum horsepower supply fan

motor.

Basic Unit Weights

Low HeatYCHigh Heat TC TE

Table 5. Point loading average weight

1,2

— lbs./kg

Model A B C D E F

**D330/275 846 384 688 313 743 337 745 338 604 275 503 228

**H330/275 867 393 707 321 767 348 753 342 613 279 513 233

**D360/305 836 379 680 309 779 353 741 336 621 285 568 258

**H360/305 897 407 696 316 766 348 729 330 590 268 636 288

**D420/350 892 405 692 314 779 353 765 347 633 288 590 268

**H420/350 867 393 869 395 690 313 758 344 601 273 654 297

**D480/400 820 372 856 388 937 425 742 336 762 346 769 349

**H480/400 841 381 876 397 957 434 754 342 775 352 782 355

**D600/500 894 406 955 428 970 440 756 343 862 391 866 393

**H600/500 915 415 966 438 990 449 768 348 875 397 879 399

Notes:

1. Point Loading is identified with corner A being the corner with the compressors. As you move clockwise around the unit as viewed from the top, mid-point B, corner C, corner D, mid-point E and corner F.

2. Point load calculations provided are based on the unit weight for YC high heat gas models.

Table 6. Approximate operating weights1— optional components — lbs./kg

Unit

Model

**D330/275 110/50 165/74 50/23 260/117 85/39 115/52 18/8 6/3 30/14 85/38 310/141 330/150

**H330/300 145/65 200/90 50/23 285/128 85/39 115/52 18/8 6/3 30/14 85/38 310/141 330/150

**D360/305 110/50 165/74 50/23 260/117 85/39 115/52 18/8 6/3 30/14 85/38 310/141 330/150

**H330/305 145/65 200/90 50/23 285/128 85/39 115/52 18/8 6/3 30/14 85/38 310/141 330/150

**D420/350 110/50 165/74 50/23 260/117 85/39 115/52 18/8 6/3 30/14 85/38 310/141 330/150

**H420/350 145/65 200/90 50/23 285/128 85/39 115/52 18/8 6/3 30/14 85/38 310/141 330/150

**D480/400 110/50 165/74 50/23 290/131 115/52 150/68 18/8 6/3 30/14 85/38 365/169 365/169

**H480/400 145/65 200/90 50/23 300/135 115/52 150/68 18/8 6/3 30/14 85/38 365/169 365/169

**D600/500 110/50 165/74 50/23 290/131 115/52 150/68 18/8 6/3 30/14 85/38 365/169 365/169

**H600/500 145/65 200/90 50/23 300/135 115/52 150/68 18/8 6/3 30/14 85/38 365/169 365/169

Note:

1. Basic unit weight includes minimum horsepower supply fan motor.

Baro.

Relief

Power

Exhaust

0-25%

Man

Damper Econ.

20 RT-SVX34F-EN

Var. Freq.

Drives (VFD’s)

Bypass Lo Hi

Valves

Serv

Through-

the base Elec.

Non-

Fused

Discon.

Switch

Factory.

GFI with

Discon.

Switch

Roof CurbW/O With

Installation General Requirements

Condensate Drain Connection

Each commercial rooftop unit is equipped with one (1) 11/4 inch Female PVC condensate drain connection.

Refer to Figure 11, p. 18 for the location of the connector. A condensate trap must be installed due to the drain connection being on the “negative pressure” side of the fan. Install a P-Trap at the unit using the guidelines in

Figure 14, p. 21.

Pitch the drain line at least 1/2 inch for every 10 feet of horizontal run to assure proper condensate flow.

Ensure that all condensate drain line installations comply with applicable building and waste disposal codes.

Figure 14. Condensate trap installation

4. Remove the dust cap from the tubing connector located below the sensor in the vertical support.

5. Attach one end of the 50' x 3/16” O.D. factory provided pneumatic tubing to the sensor's top port, and the other end of the tubing to the connector in the vertical support. Discard any excess tubing.

Units with Statitrac™

1. Open the filter access door, and locate the Statitrac Transducer Assembly illustrated in Figure 16, p. 22. There are two tube connectors mounted on the left of the solenoid and transducers. Connect one end of the field provided 1/4” (length 50-100 ft.) or 3/8” (length greater than 100 ft.) O.D. pneumatic tubing for the space pressurization control to the fitting indicated in the illustration.

2. Route the opposite end of the tubing to a suitable location inside the building. This location should be the largest open area that will not be affected by sudden static pressure changes.

Figure 15. Pressure tubing

O/A Sensor & Tubing Installation

An Outside Air Pressure Sensor is shipped with all units designed to operate on traditional variable air volume applications (non-SZ VAV) and units with Statitrac™.

A duct pressure transducer and the outside air sensor is used to control the discharge duct static pressure to within a customer-specified controlband. Refer to the illustration in Figure 15, p. 21 and the following steps to install the sensor and the pneumatic tubing.

1. Remove the O/A pressure sensor kit located inside the fan section. The kit contains the following items;

• an O/A static pressure sensor

• a sensor mounting bracket

• 50’ of 3/16” O.D. pneumatic tubing

• mounting hardware

2. Using two #10-32 x 1-3/4” screws provided, install the sensor's mounting bracket to the factory provided bracket (near the fan section).

3. Using the #10-32 x 1/2” screws provided, install the O/ A static pressure sensor vertically to the sensor bracket.

RT-SVX34F-EN 21

Installation General Requirements

Static Reference Tubing Connects Here (O/A Sensor)

Space Pressure Sensing Tube Connects Here

Space Pressure Calibration Solenoid

Space Pressure Transducer

CNO

Sensing Tube to Outside Air Reference

Space Pressure Transducer

Sensing Tube to Space Pressure

Figure 16. Statitrac transducer assembly

22 RT-SVX34F-EN

Installation Electrical

Disconnect Switch External Handle (Factory Mounted Option)

Units ordered with the factory mounted disconnect switch come equipped with an externally mounted handle. This allows the operator to disconnect power from the unit without having to open the control panel door. The handle location and its three positions are shown below;

ON - Indicates that the disconnect switch is closed, allowing the main power supply to be applied at the unit.

OFF - Indicates that the disconnect switch is open, interrupting the main power supply at the unit.

OPEN COVER/RESET - Turning the handle to this position releases the handle from the disconnect switch, allowing the control panel door to be opened.

WARNI NG

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

Once the door has been opened, it can be closed with the handle in any one of the three positions outlined above, provided it matches the disconnect switch position. The handle can be locked in the “OFF” position. While holding the handle in the “OFF” position, push the spring loaded thumb key, attached to the handle, into the base slot. Place the lock shackle between the handle and the thumb key. This will prevent it from springing out of position.

Figure 17. Disconnect switch

An overall layout of the field required power wiring is illustrated in Figure 18, p. 24. To insure that the unit supply power wiring is properly sized and installed, follow the guidelines outlined below.

Note: All field installed wiring must conform to NEC

guidelines as well as State and Local codes.

Verify that the power supply available is compatible with the unit's name plate ratings for all components. The available power supply must be within 10% of the rated voltage stamped on the nameplate. Use only copper conductors to connect the 3-phase power supply to the unit.

NOTICE:

Use Copper Conductors Only!

Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could result in equipment damage.

Main Power Wiring

WARNI NG

Proper Field Wiring and Grounding Required!

1. Table 7, p. 25 and Ta b le 10 , p . 2 6 list the electrical service sizing data. The electrical service must be protected from over current and short circuit conditions in accordance with NEC requirements. Protection devices must be sized according to the electrical data on the nameplate. Refer to “Electrical

Wire Sizing and Protection Device Equations” on page 27 for determining:

a. The appropriate electrical service wire size based

on “Minimum Circuit Ampacity” (MCA),

b. The “Maximum Over current Protection” (MOP)

device.

c. The “Recommended Dual Element fuse size” (RDE).

2. If the unit is not equipped with an optional factory installed Nonfused disconnect switch, a field supplied disconnect switch must be installed at or near the unit in accordance with the National Electrical Code (NEC latest edition). Refer to DSS calculations

Wire Sizing and Protection Device Equations” on page 27 for determining correct size.

Location for the electrical service entrance is shown in the unit dimensional drawings beginning with

Figure 1, p. 13. Complete the unit's power wiring

connections onto either the main terminal block HTB1,

“Electrical

RT-SVX34F-EN 23

Installation Electrical

or the factory mounted nonfused disconnect switch inside the unit control panel.

Note: When the factory installed through-the-base

option is not used, the installing contractor is required to seal any holes made in the base of the unit to prevent water from leaking into the building.

3. Provide proper grounding for the unit in accordance with local and national codes.

Figure 18. Typical field power wiring

Through-the-Base Electrical (Optional Accessory)

Liquid-tight conduit couplings are secured to the base of the unit for both power and control wiring. Liquid-tight conduit must be field installed between the couplings and the unit control box to prevent water leaks into the building.

Note: If the unit is set on the roof curb and temporary

auxiliary heat is provided in the building, it is recommended that the electrical and control wiring conduit opening in the control box be temporarily sealed to provide a vapor barrier.

24 RT-SVX34F-EN

Installation Electrical

Table 7. 27½-50 ton electrical service sizing data—60Hz

Fan Motors

Model

TC/TE/

YC*330

TC/TE/

YC*360

TC/TE/

YC*420

TC/TE/

YC*480

TC/TE/

YC*600

Notes:

1. All customer wiring and devices must be installed in accordance with local and national electrical codes.

2. 100% Power Exhaust is with or without Statitrac™.

Characteristics

208/60/3 187-229

230/60/3 207-253

460/60/3 414-506

575/60/3 517-633

208/60/3 187-229 2/13 50.5 315/315

230/60/3 207-253 2/13 50.5 315/315

460/60/3 414-506 2/13 23.0 158/158

575/60/3 517-633 2/13 19.0 136/136

208/60/3 187-229

230/60/3 207-253

460/60/3 414-506

575/60/3 517-633

208/60/3 187-229

230/60/3 207-253

460/60/3 414-506

575/60/3 517-633

208/60/3 187-229

230/60/3 207-253

460/60/3 414-506

575/60/3 517-633

Electrical

Voltage

Range

No/Ton RLA (Ea.) LRA (Ea.) HP FLA No HP

1/12,1/

1/13,1/

2/13,1/

Allowable

Compressor Supply Condenser Exhaust

7.5

44.0/50.5 304/315

21.0/23.0 147/158

17.5/19.0 122/136

50.5/56.0 315/351

23.0/27.5 158/197

19.0/23.0 136/146

50.5/83.9 315/485

23.0/34.0 158/215

19.0/27.3 136/175

50.5/56.0 315/351

23.0/27.5 158/197

19.0/23.0 136/146

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

15.0

7.5

10.0

15.0

7.5

10.0

15.0

7.5

10.0

15.0

10.0

15.0

10.0

15.0

10.0

15.0

10.0

15.0

10.0

15.0

20.0

10.0

15.0

20.0

10.0

15.0

20.0

10.0

15.0

20.0

22.2 3 1.1 7.0 1 2 1.0 4.1

29.5

18.8 3 1.1 7.0 1 2 1.0 4.1

25.2

9.4 3 1.1 3.5 1 2 1.0 1.8

12.6

7.8 3 1.1 2.8 1 2 1.0 1.4

10.1

22.2 3 1.1 7.0 1 2 1.0 4.1

29.5

18.8 3 1.1 7.0 1 2 1.0 4.1

25.2

9.4 3 1.1 3.5 1 2 1.0 1.8

12.6

7.8 3 1.1 2.8 1 2 1.0 1.4

10.1

22.2

29.5

3 1.1 7.0 1 2 1.0 4.1

40.7

18.8

25.2

3 1.1 7.0 1 2 1.0 4.1

35.4

9.4

12.6

3 1.1 3.5 1 2 1.0 1.8

17.7

7.8

10.1

3 1.1 2.8 1 2 1.0 1.4

15.1

29.5 4 1.1 7.0 1 2 1.5 5.4

40.7

25.2 4 1.1 7.0 1 2 1.5 5.4

35.4

12.6 4 1.1 3.5 1 2 1.5 2.7

17.7

10.1 4 1.1 2.8 1 2 1.5 2.2

15.1

29.5

40.7

4 1.1 7.0 1 2 1.5 5.4

56.1

25.2

35.4

4 1.1 7.0 1 2 1.5 5.4

49.4

12.6

17.7

4 1.1 3.5 1 2 1.5 2.7

24.7

10.1

15.1

4 1.1 2.8 1 2 1.5 2.2

19.6

FLA

(Ea.)

50% 100%

FLA

(Ea.)No.

RT-SVX34F-EN 25

Installation Electrical

Table 8. Electrical service sizing data — electric heat

module (electric heat only) — 60 Hz

Models: TE(D,H,F,R) 330—600 Electric Heat FLA

KW Heater

Nominal

Unit Size

(Tons)

27½-35

40- 50

Note: All FLA in this table are based on heater operating at 208, 240, 480,

and 600 volts.

Nominal

36 54 72 90 108

Unit

Voltage

208 74.9 112.4 — — —

230 86.6 129.9 — — —

460 43.3 65.0 86.6 108.3 —

575 — 52.0 69.3 86.6 —

208 — 112.4 — — —

230 — 129.9 — — —

460 — 65.0 86.6 108.3 129.9

575 — 52.0 69.3 86.6 103.9

FLA FLA FLA FLA FLA

Table 9. Electrical service sizing data — crankcase

heaters (heating mode only) — 60Hz

Nominal

Unit Size (Tons)

27½ - 35 1111

40, 50 2211

FLA Add Unit Voltage

200 230 460 575

Table 10. Electrical service sizing data — 50Hz

Fan Motors

Compressor

Model

TC/TE/YC*275 380-415/50/3 1/10, 1/11 21.0/23.0 147/ 158 7.5 (5.6)

TC/TE/YC*305 380-415/50/3 2/11 23.0 158 7.5 (5.6)

TC/TE/YC*350 380-415/50/3 1/11, 1/12 23.0/27.5 158/ 197 7.5 (5.6)

TC/TE/YC*400 380-415/50/3 1/11, 1/17 23.0/34.0 158/ 215 10 (6.8)

TC/TE/YC*500 380-415/50/3 2/11, 1/12 23.0/27.5 158/ 197 10 (6.8)

Notes:

1. All condenser fan motors are single phase.

2. All customer wiring and devices must be installed in accordance with local and national electrical codes.

3. Allowable voltage range for the 380V unit is 342-418V, allowable voltage range for the 415V unit is 373-456.

4. 100% Power Exhaust is with or without Statitrac.

Characteristics

No/Ton

Electrical

RLA

(Ea.)

LRA

(Ea.) HP(kW) FLA No. HP(kW)

Supply Condenser

10 (6.8)

15 (10.5)

20 (12.8)

13.6/

16.0/

13.6/

16.0/

13.6/

16.0/

24.0/

16.0/

24.0/

16.0/

24.0/

29.0/

3 .75 (.56) 4.4 1 2

14.1

15.5

14.1

15.5

14.1

15.5

26.0

15.5

26.0

15.5

26.0

28.0

0.75

(0.56)

0.75

(0.56)

0.75

(0.56)

0.75

(0.56)

50% 100%

FLA

(Ea.)

4.4 1 2

Exhaust

(kW)

(0.56)

(0.75)

0.75

1.0

FLA

(Ea.)No.

1.7

2.5

26 RT-SVX34F-EN

Table 11. Electrical service sizing data – electric heat

module (electric heat units only)—50Hz

Models: TE(D,H,F,R) 275 through 500 Electric Heat FLA

Nominal

Unit Size

(Tons)

23-29

33, 42

Note: All FLA in this table are based on heater operating at 380 or 415 volts

as shown above.

Nominal

Unit

Voltage

380 34.5 51.1 68.9 85.5 –

415 37.6 55.6 – – –

380 – 51.1 68.9 85.5 103.4

415 – 55.6 75.1 93.2 112.7

KW Heater (380/415V)

23/27 34/40 45/54 56/67 68/81

Table 12. Electrical service sizing data — crankcase

heaters (heating mode only) — 50Hz

FLA Add

Nominal Unit Size

(Tons)

23 - 29 1 1

33 - 42 1 1

Unit Voltage

380 415

Electrical Wire Sizing and Protection Device Equations

To correctly size the main power wiring based on MCA (Minimum Circuit Ampacity), use the appropriate equation listed below. Read the definitions that follow and then use Calculation #1 for determining MCA (Minimum Circuit Ampacity), MOP (Maximum Over current Protection), and RDE (Recommended Dual Element fuse size) for TC (Cooling Only) units and YC (Cooling with Gas Heat) units. Use Calculation #2 for TE (Cooling with Electric Heat) units.

Load Definitions:

• LOAD 1 = CURRENT OF THE LARGEST MOTOR (Compressor or Fan Motor)

• LOAD 2 = SUM OF THE CURRENTS OF ALL REMAINING MOTORS

• LOAD 3 = FLA (Full Load Amps) OF THE ELECTRIC HEATER

• LOAD 4 = ANY OTHER LOAD RATED AT 1 AMP OR MORE

• CRANKCASE HEATERS FOR HEATING MODE ONLY:

• 208/230 VOLT

– 27.5 - 35 Ton Units, Add 1 Amp

– 40 - 50 Ton Units, Add 2 Amps

• 460/575 VOLT

– 27.5 - 35 Tons Units, Add 1 Amp

– 40 - 50 Ton Units, Add 1 Amp

Installation Electrical

Calculation #1 - TC*, YC*-27.5 to 50 Ton Units

MCA = (1.25 x Load 1) + Load 2 + Load 4

MOP = (2.25 x Load 1) + Load 2 + Load 4 (See Note 1)

RDE = (1.5 x Load 1) + Load 2 + Load 4 (See Note 2)

Calculation # 2 - TE*-27.5 to 50 Ton Units

A. Single Source Power (all voltages)

To calculate the correct MCA (Minimum Circuit Ampacity), MOP (Maximum Over current Protection), and RDE (Recommended Dual Element fuse size), two (2) sets of calculations must be performed;

1. Calculate the MCA, MOP and/or RDE values using the above equation as if the unit is operating in the cooling mode.

2. Calculate the MCA, MOP and/or RDE values as if the unit is operating in the heating mode, as follows:

Note: When determining loads, the compressors and

condenser fan motors do not operate during the heating cycle.

Units with less than 50 KW Heaters

MCA = 1.25 x (Load 1 + Load 2 + Load 4) + (1.25 x Load 3)

Units with 50 KW or Larger Heaters

MCA = 1.25 x (Load 1 + Load 2 + Load 4) + Load 3

The MCA value stamped on the nameplate is the largest of the two calculated values.

MOP = (2.25 x Load 1) + Load 2 + Load 3 + Load 4 (See Note

The MOP value stamped on the nameplate is the largest of the two calculated values.

RDE = (1.5 x Load 1) + Load 2 + Load 3 + Load 4 (See Note 2)

Note: Select an over current protection device equal to

the MOP value. If the calculated MOP value does not equal a standard size protection device listed in NEC 240-6, select the next lower over current protection device. If the calculated MOP value is less than the MCA value, select the lowest over current protection device which is equal to or larger than the MCA, providing the selected over current device does not exceed 800 amps.

Note: Select a Dual Element Fuse equal to the RDE value.

If the calculated RDE value does not equal a standard dual element fuse size listed in NEC 2406, select the next higher fuse size. If the calculated RDE value is greater than the MOP value, select a Dual Element fuse equal to the calculated MOP (Maximum Over current Protection) value

RT-SVX34F-EN 27

Installation Electrical

Disconnect Switch Sizing (DSS)

Calculation A. - YC*, TC*, and TE* Units:

DSS = 1.15 X (LOAD1 + LOAD2 + LOAD4)

For TE* units, use calculations A and B.

Calculation B. - TE* Units:

DSS = 1.15 X (LOAD3 + Supply Fan FLA + Exhaust

Fan FLA).

Use the larger value of calculations A or B to size the electrical disconnect switch.

Low Voltage Wiring

An overall layout of the various control options available for a Constant Volume application is illustrated in

Figure 19, p. 30 and Figure 20, p. 31 illustrates the various

control options for a Variable Air Volume application. The required number of conductors for each control device are listed in the illustration.

A typical field connection diagram for the sensors and other options are shown in the following section “Remote Panels and Sensors”. These diagrams are representative of standard applications and are provided for general reference only. Always refer to the wiring diagram that shipped with the unit for specific electrical schematic and connection information.

Note: All field wiring must conform to NEC guidelines as

well as state and local codes.

Control Power Transformer

WARN ING

Hazardous Voltage!

The 24 volt control power transformers are equipped with internal circuit breakers. They are to be used only with the accessories called out in this manual. If a circuit breaker trips, be sure to turn off all power to the unit before attempting to reset it.

On units equipped with the VFD option, an additional control power transformer is used. The secondary is protected with fuses. Should the fuse blow, be sure to turn off all power to the unit before attempting to replace it.

Field Installed AC Control Wiring

WARNI NG

Proper Field Wiring and Grounding Required!

NOTICE:

Use Copper Conductors Only!

Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could result in equipment damage.

Before installing any connecting wiring, refer to Tab l e 13 ,

p. 28 for conductor sizing guidelines and;

• Use copper conductors unless otherwise specified.

• Ensure that the AC control voltage wiring between

the controls and the unit's termination point does not exceed three (3) ohms/conductor for the length of the run.

Note: Resistance in excess of 3 ohms per conductor may

cause component failure due to insufficient AC voltage supply.

• Refer to dimensional information beginning with

Figure 1, p. 13 for the electrical access locations

provided on the unit.

• Do not run the AC low voltage wiring in the same

conduit with the high voltage power supply wiring.

Be sure to check all loads and conductors for grounds, shorts, and miswiring. After correcting any discrepancies, reset the circuit breakers by pressing the black button located on the left side of the transformer.

Table 13. AC conductors

Distance from unit to control Recommended wire size

000-460 feet 18 gauge

461-732 feet 16 gauge

733-1000 feet 14 gauge

28 RT-SVX34F-EN

Installation Electrical

Field Installed DC Control Wiring

WARN ING

Proper Field Wiring and Grounding Required!

NOTICE:

Use Copper Conductors Only!

Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could result in equipment damage.

Before installing the connecting wiring between the components utilizing a DC analog output/input signal and the unit, refer to Table 14, p. 29 for conductor sizing guidelines and;

• Use standard copper conductor thermostat wire unless otherwise specified.

• Ensure that the wiring between the controls and the unit's termination point does not exceed two and a half (2-1/2) ohms/conductor for the length of the run.

Note: Resistance in excess of 21/2 ohms per conductor

can cause deviations in the accuracy of the controls.

• Refer to dimensional drawings beginning with

Figure 1, p. 13 for the electrical access locations

provided on the unit.

• Do not run the electrical wires transporting DC signals in or around conduit housing high voltage wires.

• Must not pass between buildings.

Table 14. DC conductors

Distance from unit to control Recommended wire size

000-150 feet 22 gauge

151-240 feet 20 gauge

241-385 feet 18 gauge

386-610 feet 16 gauge

611-970 feet 14 gauge

Units equipped with the Trane Communication Interface (TCI) option, which utilizes a serial communication link;

• Must be 18 AWG shielded twisted pair cable Belden 8760 or equivalent).

• Must not exceed 5,000 feet maximum for each link.

RT-SVX34F-EN 29

Installation Electrical

LT B6

Space

Humidity

Sensor

Space

Humidistat

RTRM J7 Thermostat Inputs N/A for SZ VAV

Figure 19. Typical field wiring requirements for CV and SZ VAV control options

30 RT-SVX34F-EN

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