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© 2014 Trane   All rights reserved

 RT-SVX052A-EN

Introduction

Read this manual thoroughly before operating or servicing 
this unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as 
required. Your personal safety and the proper operation of 
this machine depend upon the strict observance of these 
precautions.

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 refrigerants-including industry replacements for CFCs 
such as HCFCs and HFCs.

Important 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.

The three types of advisories are defined as follows:

WARNING

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

CAUTION

s

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.

NOTICE

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

WARNING

Proper Field Wiring and Grounding 
Required!

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

WARNING

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 PPE required for the work being 
undertaken (Examples; cut resistant gloves/sleeves, 
butyl gloves, safety glasses, hard hat/bump cap, fall 
protection, electrical PPE and arc flash clothing). 
ALWAYS refer to appropriate Material Safety Data 
Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA 
guidelines for proper PPE.

When working with or around hazardous chemicals, 
ALWAYS refer to the appropriate MSDS/SDS and 
OSHA/GHS (Global Harmonized System of 
Classification and Labelling of Chemicals) guidelines 
for information on allowable personal exposure 
levels, proper respiratory protection and handling 
instructions.

If there is a risk of energized electrical contact, arc, or 
flash, technicians MUST put on all PPE in accordance 
with OSHA, NFPA 70E, or other country-specific 
requirements for arc flash protection, PRIOR to 
servicing the unit. NEVER PERFORM ANY 
SWITCHING, DISCONNECTING, OR VOLTAGE 
TESTING WITHOUT PROPER ELECTRICAL PPE AND 
ARC FLASH CLOTHING. ENSURE ELECTRICAL 
METERS AND EQUIPMENT ARE PROPERLY RATED 
FOR INTENDED VOLTAGE.

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

Summary of Contents for EAC180-300AK

Page 1: ...ing 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 t...

Page 2: ...icates 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 NOTICE Indicates a situation that could r...

Page 3: ...r contact a qualified service organization with qualified experienced HVAC technicians to properly diagnose and repair this equipment WARNING Proper Field Wiring and Grounding Required All field wirin...

Page 4: ...tions 20 Unit Disconnect FIYUDC 20 Pre Start 21 Verifying Proper Air Flow Units with Belt Drive Indoor Fan 21 Electromechanical Controls Test Procedure 21 Start Up 22 Economizer Start Up 22 Compressor...

Page 5: ...halpy 0 100 without Barometric Relief4 F Economizer Reference Enthalpy 0 100 with Barometric Relief1 4 G Economizer Comparative Enthalpy 0 100 without Barometric Relief4 H Economizer Comparative Entha...

Page 6: ...o fieldadjustments andthe module willautomatically reset from a fault condition Discharge Line Thermostat Control The high pressure controls and discharge line thermostats are wired in series between...

Page 7: ...rom forming inside the unit s electrical compartments and motors if The unit is stored before it is installed or The unit is set on the roof curb and temporary heat is provided in the building Isolate...

Page 8: ...8 RT SVX052A EN Dimensional Data Figure 1 Typical installation clearance for single and multiple unit applications 5 8 5 0...

Page 9: ...RT SVX052A EN 9 Dimensional Data Figure 2 Cooling with optional electrical heat units overview Figure 3 Cooling with optional electrical units front side views 15 25 tons standard efficiency...

Page 10: ...52A EN Dimensional Data Figure 4 Cooling with optional electrical heat units plan view 15 25 tons standard efficiency Figure 5 Foundation units back view horizontal configuration 15 25 tons standard e...

Page 11: ...ndard efficiency Figure 7 Downflow duct connections field fabricated 15 25 tons standard efficiency 9 1 25 4 MM CURB FLANGE LONG SIDES SHORT SIDES Notes Duct flanges mount 7 7 16 down inside the curb...

Page 12: ...onal Data Figure 8 Downflow unit clearance 15 25 tons standard efficiency Figure 9 Barometric relief and economizer 15 25 tons standard efficiency MOTORIZED DAMPER BAROMETRIC RELIEF IS FOR USE WITH A...

Page 13: ...RT SVX052A EN 13 Dimensional Data Figure 10 Manual damper 15 25 tons standard efficiency...

Page 14: ...438 357 416 54 37 25 EAC300A 2208 1888 664 457 345 422 53 35 a Weights are approximate Horizontal and downflow unit and corner weights may vary slightly b Weights do not include additional factory or...

Page 15: ...rs gaskets must be installed around the curb perimeter flange and the supply and return air opening flanges General Unit Requirements The checklist listed below is a summary of the steps required to s...

Page 16: ...ion which could result in condensate backup due to air lock Filter Installation Each unit ships with 2 inch filters installed The quantity of filters is determined by unit size Access to the filters i...

Page 17: ...anual Transformers rated greater than 50 Vac are equipped with internal circuit breakers If a circuit breaker trips turn Off all power to the unit before attempting to reset it The transformer is loca...

Page 18: ...life If the voltage imbalance isover 2 percent notify the proper agencies to correct the voltage problem before operating this equipment Electrical Phasing Three Phase Motors The compressor motor s an...

Page 19: ...e the following checklist in conjunction with the general checklist General Unit Requirements p 15 to ensure that the unit is properly installed and ready for operation Check all electrical connection...

Page 20: ...ty found on the unit nameplate and the N E C 4 Route low voltage class II control wiring through hole in base of unit but not through high voltage conduit Feedcontrolwiringthroughbushingprovided on si...

Page 21: ...0 using the setpoint potentiometer located on the Economizer Control ECA if applicable Electromechanical Controls Test Procedure See unit schematic for correct wire numbers Fan Test and Minimum Ventil...

Page 22: ...ning a compressor interchange any two leads at the compressor Terminal block to check the internal phasing Refer to the following illustration for the compressor terminal phase identification Do not a...

Page 23: ...ocedures outlined in the previous sections i e operating the unit in each of its modes through all available stages of cooling and heating perform these final checks before leaving the unit Program th...

Page 24: ...s number represents the force in pounds required to give the needed deflection 6 Compare the force scale reading Step 5 with the appropriate force value listed in Table 5 p 24 If the force reading is...

Page 25: ...6 p 26 If the operating pressures indicate a refrigerant shortage measure the system superheat For guidelines refer to Compressor Start Up p 22 Note Do NOT release refrigerant to the atmosphere If add...

Page 26: ...nks provided 1 Complete Unit Model Number _____________________________________________________ 2 Unit Serial Number _____________________________________________________ 3 Wiring Diagram Numbers from...

Page 27: ...nit operations down Unit Economizer Control ECA Verify Economizer Status by Economizer Actuator ECA LED indicator OFF No Power or Failure ON Normal OK to Economize Slow Flash Normal Not OK to Economiz...

Page 28: ...low Schematic Type Voltage Diagram Number Description Constant Volume Power 208 230 380 2313 2202 EAC180 300 EAD180 300 60Hz Cooling only Electric Heat Control 208 230 380 2313 2207 EAC180 300 EAD180...

Page 29: ...may also have other rights which vary from state to state Trane 2701 Wilma Rudolph Blvd Clarksville TN 37040 1008 Attention Manager Product Service GW 602 4800 This warranty is for commercial usage of...

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Page 32: ...portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www IRCO com The manufacturer has a policy of continuous product and product data...

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