Trane TTA073GA, TTA090G-HA, TTA120G-H-FA, TTA150EA, TTA180E-F***A Installation and Maintenance Manual

...

Installation, Operation, and Maintenance

Split System Air Conditioners Odyssey™™

Cooling Condenser — 6 to 25 Tons

((6600 HHzz)) TTA073G***A TTA090G/H***A TTA120G/H/F***A TTA150E***A TTA180E/F***A TTA240E/F***A TTA300F***A

((5500 HHzz)) TTA061G***A TTA076G/H***A TTA101G/H/F***A TTA126E***A TTA156E/F***A TTA201E/F***A TTA251F***A

SSAAFFEETTYY WWAARRNNIINNGG

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.

March 2015

SS-SVX10E-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.

The three types of advisories are defined as follows:

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 accidents.

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.

WWAARRNNIINNGG

PPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinngg RReeqquuiirreedd!!

FFaaiilluurree ttoo ffoollllooww ccooddee ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. AAllll ffiieelldd wwiirriinngg MMUUSSTT bbee ppeerrffoorrmmeedd bbyy qquuaalliiffiieedd ppeerrssoonnnneell.. IImmpprrooppeerrllyy iinnssttaalllleedd aanndd ggrroouunnddeedd ffiieelldd wwiirriinngg ppoosseess FFIIRREE aanndd EELLEECCTTRROOCCUUTTIIOONN hhaazzaarrddss.. TToo aavvooiidd tthheessee hhaazzaarrddss,, yyoouu MMUUSSTT ffoollllooww rreeqquuiirreemmeennttss ffoorr ffiieelldd wwiirriinngg iinnssttaallllaattiioonn aanndd ggrroouunnddiinngg aass ddeessccrriibbeedd iinn NNEECC aanndd yyoouurr llooccaall// ssttaattee eelleeccttrriiccaall ccooddeess..

WWAARRNNIINNGG

PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE)) RReeqquuiirreedd!!

FFaaiilluurree ttoo wweeaarr pprrooppeerr PPPPEE ffoorr tthhee jjoobb bbeeiinngg uunnddeerrttaakkeenn ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroomm ppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaall hhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaall aanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthhee iinnssttrruuccttiioonnss bbeellooww::

•• BBeeffoorree iinnssttaalllliinngg//sseerrvviicciinngg tthhiiss uunniitt,, tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPPPEE rreeqquuiirreedd ffoorr tthhee wwoorrkk bbeeiinngg uunnddeerrttaakkeenn ((EExxaammpplleess;; ccuutt rreessiissttaanntt gglloovveess//sslleeeevveess,, bbuuttyyll gglloovveess,, ssaaffeettyy ggllaasssseess,, hhaarrdd hhaatt//bbuummpp ccaapp,, ffaallll pprrootteeccttiioonn,, eelleeccttrriiccaall PPPPEE aanndd aarrcc ffllaasshh ccllootthhiinngg)).. AALLWWAAYYSS rreeffeerr ttoo aapppprroopprriiaattee MMaatteerriiaall SSaaffeettyy DDaattaa SShheeeettss ((MMSSDDSS))//SSaaffeettyy DDaattaa SShheeeettss ((SSDDSS)) aanndd OOSSHHAA gguuiiddeelliinneess ffoorr pprrooppeerr PPPPEE..

•• WWhheenn wwoorrkkiinngg wwiitthh oorr aarroouunndd hhaazzaarrddoouuss cchheemmiiccaallss,, AALLWWAAYYSS rreeffeerr ttoo tthhee aapppprroopprriiaattee MMSSDDSS//SSDDSS aanndd OOSSHHAA//GGHHSS ((GGlloobbaall HHaarrmmoonniizzeedd SSyysstteemm ooff CCllaassssiiffiiccaattiioonn aanndd LLaabbeelllliinngg ooff CChheemmiiccaallss)) gguuiiddeelliinneess ffoorr iinnffoorrmmaattiioonn oonn aalllloowwaabbllee ppeerrssoonnaall eexxppoossuurree lleevveellss,, pprrooppeerr rreessppiirraattoorryy pprrootteeccttiioonn aanndd hhaannddlliinngg iinnssttrruuccttiioonnss..

•• IIff tthheerree iiss aa rriisskk ooff eenneerrggiizzeedd eelleeccttrriiccaall ccoonnttaacctt,, aarrcc,, oorr ffllaasshh,, tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPPPEE iinn aaccccoorrddaannccee wwiitthh OOSSHHAA,, NNFFPPAA 7700EE,, oorr ootthheerr ccoouunnttrryy--ssppeecciiffiicc rreeqquuiirreemmeennttss ffoorr aarrcc ffllaasshh pprrootteeccttiioonn,, PPRRIIOORR ttoo sseerrvviicciinngg tthhee uunniitt.. NNEEVVEERR PPEERRFFOORRMM AANNYY SSWWIITTCCHHIINNGG,, DDIISSCCOONNNNEECCTTIINNGG,, OORR VVOOLLTTAAGGEE TTEESSTTIINNGG WWIITTHHOOUUTT PPRROOPPEERR EELLEECCTTRRIICCAALL PPPPEE AANNDD AARRCC FFLLAASSHH CCLLOOTTHHIINNGG.. EENNSSUURREE EELLEECCTTRRIICCAALL MMEETTEERRSS AANNDD EEQQUUIIPPMMEENNTT AARREE PPRROOPPEERRLLYY RRAATTEEDD FFOORR IINNTTEENNDDEEDD VVOOLLTTAAGGEE..

SS-SVX10E-EN

IInnttrroodduuccttiioonn

WWAARRNNIINNGG

RReeffrriiggeerraanntt uunnddeerr HHiigghh PPrreessssuurree!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn aann eexxpplloossiioonn wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy oorr eeqquuiippmmeenntt ddaammaaggee.. SSyysstteemm ccoonnttaaiinnss ooiill aanndd rreeffrriiggeerraanntt uunnddeerr hhiigghh pprreessssuurree.. RReeccoovveerr rreeffrriiggeerraanntt ttoo rreelliieevvee pprreessssuurree bbeeffoorree ooppeenniinngg tthhee ssyysstteemm.. SSeeee uunniitt nnaammeeppllaattee ffoorr rreeffrriiggeerraanntt ttyyppee.. DDoo nnoott uussee nnoonn--aapppprroovveedd rreeffrriiggeerraannttss,, rreeffrriiggeerraanntt ssuubbssttiittuutteess,, oorr rreeffrriiggeerraanntt aaddddiittiivveess..

WWAARRNNIINNGG

RR--441100AA RReeffrriiggeerraanntt uunnddeerr HHiigghheerr PPrreessssuurree tthhaann RR--2222!!

FFaaiilluurree ttoo uussee pprrooppeerr eeqquuiippmmeenntt oorr ccoommppoonneennttss aass ddeessccrriibbeedd bbeellooww,, ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt ffaaiilliinngg aanndd ppoossssiibbllyy eexxppllooddiinngg,, wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh,, sseerriioouuss iinnjjuurryy,, oorr eeqquuiippmmeenntt ddaammaaggee.. TThhee uunniittss ddeessccrriibbeedd iinn tthhiiss mmaannuuaall uussee RR--441100AA rreeffrriiggeerraanntt wwhhiicchh ooppeerraatteess aatt hhiigghheerr pprreessssuurreess tthhaann RR--2222.. UUssee OONNLLYY RR--441100AA rraatteedd sseerrvviiccee eeqquuiippmmeenntt oorr ccoommppoonneennttss wwiitthh tthheessee uunniittss.. FFoorr ssppeecciiffiicc hhaannddlliinngg ccoonncceerrnnss wwiitthh RR--441100AA,, pplleeaassee ccoonnttaacctt yyoouurr llooccaall TTrraannee rreepprreesseennttaattiivvee..

This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.

Trademarks

All trademarks referenced in this document are the trademarks of their respective owners.

Revision History

• Microchannel is now standard on 5–10 ton single and dual compressor units. All data has been updated to reflect this change.

• With the change to Microchannel, the Odyssey split system now offers a new 60Hz, 7.5 ton dual compressor model that can be matched with a new 60Hz, 7.5 ton Single Zone VAV and 2–Speed air handler. A new 50Hz, 6.25 ton dual compressor model is now also available and can be matched with a new 50Hz, 6.25 ton standard air handler.

• The 50Hz, 7 ton model has been discontinued.

SS-SVX10E-EN

Table of Contents

Model Number Description . . . . . . . . . . . . . . . . . 6

Cooling Condenser . . . . . . . . . . . . . . . . . . . . . . . 6

General Information . . . . . . . . . . . . . . . . . . . . . . . . 7

Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Inspection Checklist . . . . . . . . . . . . . . . . . . . 8

Testing for Leaks. . . . . . . . . . . . . . . . . . . . . . . . . . 8

Lifting Recommendations . . . . . . . . . . . . . . . . . 8

Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Unit Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Structural Preparation . . . . . . . . . . . . . . . . . 9

Rooftop Mounting . . . . . . . . . . . . . . . . . . . . 9

Ground Level Mounting . . . . . . . . . . . . . . . 9

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . 10

Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Cooling Condenser . . . . . . . . . . . . . . . . . . . . . . 20

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Refrigerant Piping Guidelines. . . . . . . . . . . . . 22

Refrigerant Piping Procedures (Outdoor

Units). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Refrigerant Piping Procedures (Indoor

Unit). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

System Evacuation . . . . . . . . . . . . . . . . . . . 24

Insulating and Isolating Refrigerant

Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Refrigerant Charging Procedure . . . . . . . . . . 25

Charging Levels. . . . . . . . . . . . . . . . . . . . . . 26

Liquid Charging . . . . . . . . . . . . . . . . . . . . . . . . . 27

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 28

Unit Power Supply . . . . . . . . . . . . . . . . . . . 28

Low Voltage Wiring . . . . . . . . . . . . . . . . . . 29

Electromechanical Controls . . . . . . . . . . . 29

ReliaTel Controls . . . . . . . . . . . . . . . . . . . . . 29

Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 30

Refrigerant Circuit. . . . . . . . . . . . . . . . . . . . 32

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Charging Charts and Superheat . . . . . . . . . . . 38

Installation Checklist. . . . . . . . . . . . . . . . . . . . . . . 43

Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . 43

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 43

Pre-Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Control Circuit Features . . . . . . . . . . . . . . . . . . 44

Discharge Temperature Limit

(DTL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Low Outdoor Ambient Cooling . . . . . . . . 44

Evaporator Defrost Control

(EDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Low Pressure Cut-Out (LPCO) . . . . . . . . . 44

High Pressure Cut-Out (HPCO) . . . . . . . . 44

Internal Overload Protector

(IOL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Electromechanical Controls. . . . . . . . . . . . . . . 45

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Evaporator Fan (Indoor Supply

Air) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Cooling Mode . . . . . . . . . . . . . . . . . . . . . . . 45

ReliaTel Controls . . . . . . . . . . . . . . . . . . . . . . . . 45

Control Cooling Mode . . . . . . . . . . . . . . . . 45

Control Evaporator Fan

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Control Heating Operation . . . . . . . . . . . . 46

Service Test Modes for ReliaTel™

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Test Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Step Test Mode . . . . . . . . . . . . . . . . . . . . . . 47

Resistance Test Mode . . . . . . . . . . . . . . . . 47

Auto Test Mode . . . . . . . . . . . . . . . . . . . . . . 47

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Troubleshooting ReliaTel™ Controls. . . . . . . 48

System Status Checkout Procedure . . . . . . . 48

Method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Temperature Tests . . . . . . . . . . . . . . . . . . . . . . . 49

Test 1 - Zone Temperature

Thermistor (ZTEMP). . . . . . . . . . . . . . . . . . 49

Test 2 - Cooling Set Point (CSP) and

Heating Set Point (HSP). . . . . . . . . . . . . . . 49

Test 3 - System Mode and Fan

Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Test 4 - LED Indicator Test (SYS ON,

HEAT, & COOL). . . . . . . . . . . . . . . . . . . . . . . 50

Programmable & Digital Zone Sensor

Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Testing Serial Communication

Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

RLCI Loss of Communications. . . . . . . . . 51

Resetting Cooling and Heating

Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

SS-SVX10E-EN

TTaabbllee ooff CCoonntteennttss

Method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Zone Temperature Sensor (ZTS) Service

Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Annually (Cooling Season) . . . . . . . . . . . . . . . 52

Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Tube and Fin . . . . . . . . . . . . . . . . . . . . . . . . . 52

Microchannel (MCHE) Coils . . . . . . . . . . . 53

Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . 54

Wiring Diagram Matrix . . . . . . . . . . . . . . . . . . . . 55

SS-SVX10E-EN

Model Number Description

Cooling Condenser

T T A 2 40 F 3 0 0 * *

1 2 3 4 5 6 7 8 9 10 11 12

T T A 2 0 1 F D 0 0 * *

1 2 3 4 5 6 7 8 9 10 11 12

NNoottee:: When ordering replacement parts or requesting

service, be sure to refer to the specific model number, serial number, and DL number (if applicable) stamped on the unit nameplate.

DDIIGGIITTSS 11 -- 33:: PPrroodduucctt TTyyppee

TTA = Split System Cooling

DDIIGGIITTSS 44 -- 66:: NNoommiinnaall GGrroossss CCoooolliinngg CCaappaacciittyy ((MMBBhh))

061 = 5 Tons (50Hz) 076 = 6.25 Tons (50Hz) 101 = 8.33 Tons (50Hz) 126 = 10.4 Tons (50Hz) 156 = 13.0 Tons (50Hz) 201 = 16.7 Tons (50Hz) 251 = 20.9 Tons (50Hz) 073 = 6 Tons (60Hz) 090 = 7.5 Tons (60Hz) 120 = 10 Tons (60Hz) 150 = 12.5 Tons (60Hz) 180 = 15 Tons (60Hz) 240 = 20 Tons (60Hz) 300 = 25 Tons (60Hz)

DDIIGGIITT 77:: MMaajjoorr DDeevveellooppmmeenntt SSeeqquueennccee

E = Dual Compressor, Dual Circuit, Tube and Fin F = Dual Compressor, Single Circuit (Manifold Scroll Compressors), Tube and Fin G = Single Compressor, Single Circuit, Microchannel

H = Dual Compressor, Dual Circuit, Microchannel

DDIIGGIITT 88:: EElleeccttrriiccaall CChhaarraacctteerriissttiiccss

3 = 208–230/60/3 4 = 460/60/3 W = 575/60/3 D = 380-415/50/3 K = 380/60/3

DDIIGGIITTSS 99 -- 1100:: FFaaccttoorryy IInnssttaalllleedd OOppttiioonnss

00 = Packed Stock 0S = Coated Coil 0R = ReliaTel, no LCI Board 0T = ReliaTel, no LCI Board with Coated Coil 0U = ReliaTel, with LCI Board 0W = ReliaTel, with LCI Board and Coated Coil H0 = Hail Guard with Packed Stock HS = Hail Guard with Coated Coil HR = Hail Guard with ReliaTel, no LCI Board HT = Hail Guard with ReliaTel, no LCI Board with

Coated Coil HU = Hail Guard with ReliaTel, with LCI Board HW = Hail Guard with ReliaTel, with LCI Board and

Coated Coil

DDIIGGIITTSS 1111:: MMiinnoorr DDeessiiggnn SSeeqquueennccee

* = Current Design Sequence

DDIIGGIITTSS 1122:: SSeerrvviiccee DDiiggiitt

* = Current Design Sequence

* = sequential alpha character

SS-SVX10E-EN

General Information

This manual describes proper installation, operation, and maintenance procedures for air-cooled systems. 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. Should equipment failure occur, contact a qualified service organization with qualified, experienced HVAC technicians to properly diagnose and repair this equipment.

IImmppoorrttaanntt:: All phases of this installation must comply

with the NATIONAL, STATE & LOCAL CODES. In addition to local codes, the installation must conform with National Electric Code -ANSI/NFPA NO. 70 LATEST REVISION.

Any individual installing, maintaining, or servicing this equipment must be properly trained, licensed and qualified.

IImmppoorrttaanntt:: Do not remove the VFD without first

contacting technical support! For performance-related questions and diagnostic support in North America call 1877-872-6363. Any return requires a claim number FIRST. Removal of the VFD prior to this step will void the unit’s warranties.

Installation procedures should be performed in the sequence that they appear in this manual. Do not destroy or remove the manual from the unit. The manual should remain weather-protected with the unit until all installation procedures are complete.

NNoottee:: It is not the intention of this manual to cover all

possible variations in systems that may occur or to provide comprehensive information concerning every possible contingency that may be encountered during an installation. If additional information is required or if specific problems arise that are not fully discussed in this manual, contact your local sales office.

Use the “Installation Checklist,” p. 43 provided In this manual to verify that all necessary installation procedures have been completed. Do not use the checklist as a substitute for reading the information contained in the manual. Read the entire manual before beginning installation procedures.

Unit Description

These condensers come with single, dual and manifolded compressor options. Single compressor outdoor units feature a single refrigeration circuitry, requiring only one set of refrigerant lines. Dual compressor/dual circuit models give true stand-by protection; if one compressor fails, the second will automatically start-up. Also, the first compressor can be serviced without shutting down the unit since the refrigerant circuits are independent. During light load conditions, only one compressor will operate to save energy.The dual manifolded scroll compressors come with two stages of capacity modulation and a single refrigeration circuit.

SS-SVX10E-EN

Pre-Installation

Unit Inspection

Inspect material carefully for any shipping damage. If damaged, it must be reported to, and claims made against the transportation company. Compare the information that appears on the unit nameplate with ordering and submittal data to ensure the proper unit was shipped. Available power supply must be compatible with electrical characteristics specified on component nameplates. Replace damaged parts with authorized parts only.

Inspection Checklist

To protect against loss due to damage incurred in transit, complete the following checklist upon receipt of the unit.

Inspect individual pieces of the shipment before accepting the unit. Check for obvious damage to the unit or packing material.

Inspect the unit for concealed damage before it is stored and as soon as possible after delivery. Concealed damage must be reported within 15 days. If concealed damage is discovered, stop unpacking the shipment. Do not remove 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.

Notify the carrier’s terminal of damage immediately by phone and by mail. Request an immediate joint inspection of the damage by the carrier and the consignee.

Notify the sales representative and arrange for repair. Do not repair the unit until the damage is inspected by the carrier’s representative.

Testing for Leaks

All units are shipped with a holding charge of nitrogen in each circuit and should be leak tested before installation.

1. Remove the access panel.

2. Locate the liquid line or suction line access valve for each circuit.

3. Install gauges to determine if the circuits are still pressurized. If not, the charge has escaped and should be repaired as required to obtain a leak-free circuit.

Lifting Recommendations

WWAARRNNIINNGG

IImmpprrooppeerr UUnniitt LLiifftt!!

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NNOOTTIICCEE

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Before preparing the unit for lifting, estimate the approximate center of gravity for lifting safety. Because of placement of internal components, the unit weight may be unevenly distributed. See “Weights,” p. 20 for approximate unit weights.

The crated unit can be moved using a forklift of suitable capacity. For lifting the unit, attach lifting straps or slings securely to the lifting holes at each corner (see unit drawings in “Weights,” p. 20). Use spreader bars to protect the unit casing from damage. Test lift the unit to determine proper balance and stability.

Clearances

Provide enough space around the unit to allow unrestricted access to all service points. Refer to the

“Dimensional Data,” p. 10 for unit dimensions and

minimum required service and free air clearances. Observe the following points to ensure proper unit operation.

1. Do not install the unit under a low overhang. Condenser discharge must not be restricted—refer to notes in “Dimensional Data drawings,” p. 10.

IImmppoorrttaanntt:: Do not obstruct condenser discharge

air. This can result in warm air recirculation through the coil.

2. Do not locate the unit in a position where runoff water can fall into the fan discharge openings.

3. Condenser intake air is supplied from three or four sides of the unit. Adhere to the minimum required clearances given in unit dimensional drawings (see

“Dimensional Data,” p. 10).

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PPrree--IInnssttaallllaattiioonn

Unit Mounting

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Structural Preparation

NNOOTTIICCEE

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IImmppoorrttaanntt:: Refer to local building codes for proper

installation. All installation must comply with local building codes.

Rooftop Mounting

If the unit will be roof mounted, determine for certain that the structure is strong enough to support the unit and any required accessories, see “Weights,” p. 20. The unit should be elevated on a level, field fabricated fourinch steel or wood 4" x 4" mounting frame. Complete the frame and secure it into position before lifting the unit to the roof. The mounting frame must support a minimum of three of the unit’s four sides and should span roof supports to distribute the load on the roof.

Figure 1. Roof mounted unit

Ground Level Mounting

For ground level installation, the unit base should be adequately supported and hold the unit near level. The installation must meet the guidelines set forth in local codes. The support should extend two inches beyond the unit base channels at all points. The unit and support must be isolated from any adjacent structure to prevent possible noise or vibration problems. Any ground level location must comply with required clearances given in the unit dimensional drawings (see

“Dimensional Data,” p. 10).

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Dimensional Data

Figure 2. Height, width and depth measurements

H - in. (mm) W - in. (mm) D - in. (mm)

TTA061, 073, 076, 090 39.125 (993.8) 42.125 (1070) 36 (914.4)

TTA101, 120 39.125 (993.8) 52.125 (1324) 40 (1016)

TTA126, 150 45.125 (1146.1) 52.125 (1324) 40 (1016)

TTA156, 180, 201, 240 45.125 (1146.1) 95.5 (2425.7) 45.875 (1165.2)

TTA251, 300 51.125 (1298.6) 95.5 (2425.7) 45.875 (1165.2)

NNoottee:: Full dimensional data available on next pages.

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