Trane TWA090A-G, TWA120A-G, TWA180B-G, TWA240B-G Installation Manual

Installation, Operation, and Maintenance

Split System Air Conditioners Odyssey™™

R-22 Dry Charge Heat Pump Condenser — 7.5, 10, 15 and 20 Tons

((6600 HHzz)) TWA090A***G* TWA120A***G* TWA180B***G* TWA240B***G*

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.

January 2014

SSP-SVX15C-EN

Introduction

WARNING

CAU

TION

NOTICE

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 PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE)) rreeccoommmmeennddeedd ffoorr tthhee wwoorrkk bbeeiinngg uunnddeerrttaakkeenn.. AALLWWAAYYSS rreeffeerr ttoo aapppprroopprriiaattee MMSSDDSS sshheeeettss aanndd OOSSHHAA gguuiiddeelliinneess ffoorr pprrooppeerr PPPPEE..

•• WWhheenn wwoorrkkiinngg wwiitthh oorr aarroouunndd hhaazzaarrddoouuss cchheemmiiccaallss,, AALLWWAAYYSS rreeffeerr ttoo tthhee aapppprroopprriiaattee MMSSDDSS sshheeeettss aanndd OOSSHHAA gguuiiddeelliinneess ffoorr iinnffoorrmmaattiioonn oonn aalllloowwaabbllee ppeerrssoonnaall eexxppoossuurree lleevveellss,, pprrooppeerr rreessppiirraattoorryy pprrootteeccttiioonn aanndd hhaannddlliinngg rreeccoommmmeennddaattiioonnss..

•• IIff tthheerree iiss aa rriisskk ooff aarrcc oorr ffllaasshh,, tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE)) iinn aaccccoorrddaannccee wwiitthh NNFFPPAA 7700EE oorr ootthheerr ccoouunnttrryy--ssppeecciiffiicc rreeqquuiirreemmeennttss ffoorr aarrcc ffllaasshh pprrootteeccttiioonn,, PPRRIIOORR ttoo sseerrvviicciinngg tthhee uunniitt..

SSP-SVX15C-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..

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 the written permission of Trane. 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

Removed warranty chapter, updated with running edits.

SSP-SVX15C-EN

Table of Contents

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

Heat Pump 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

Snow Belt Recommendations . . . . . . . . . . . . . 9

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

Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Heat Pump Condenser . . . . . . . . . . . . . . . . . . . 14

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Refrigerant Piping Guidelines. . . . . . . . . . . . . 15

Refrigerant Piping Procedures (Outdoor

Units). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Refrigerant Piping Procedures (Indoor

Unit). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

System Evacuation . . . . . . . . . . . . . . . . . . . 17

Insulating and Isolating Refrigerant

Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Refrigerant Charging Procedure . . . . . . . . . . 18

Liquid Charging . . . . . . . . . . . . . . . . . . . . . . . . . 19

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 19

Unit Power Supply . . . . . . . . . . . . . . . . . . . 20

Low Voltage Wiring . . . . . . . . . . . . . . . . . . 20

ReliaTel™ Controls . . . . . . . . . . . . . . . . . . . 20

Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 21

Refrigerant Circuit. . . . . . . . . . . . . . . . . . . . 22

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Charging Charts and Superheat . . . . . . . . . . . 25

Installation Checklist. . . . . . . . . . . . . . . . . . . . . . . 26

Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . 26

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 26

Pre-Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Control Circuit Features . . . . . . . . . . . . . . . . . . 27

Discharge Temperature Limit

(DTL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Evaporator Defrost Control

(EDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Low Pressure Cut-Out (LPCO) . . . . . . . . . 27

High Pressure Cut-Out (HPCO) . . . . . . . . 27

Internal Overload Protector

(IOL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ReliaTel™ Controls . . . . . . . . . . . . . . . . . . . . . . 28

Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 28

Functions and Features . . . . . . . . . . . . . . . 28

Service Test Modes for ReliaTel™

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Test Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Step Test Mode . . . . . . . . . . . . . . . . . . . . . . 33

Resistance Test Mode . . . . . . . . . . . . . . . . 33

Auto Test Mode . . . . . . . . . . . . . . . . . . . . . . 33

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Troubleshooting ReliaTel™ Controls. . . . . . . 34

System Status Checkout Procedure . . . . . . . 34

Method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Resetting Cooling and Heating

Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Zone Temperature Sensor (ZTS) Service

Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Temperature Tests . . . . . . . . . . . . . . . . . . . . . . . 36

Test 1 - Zone Temperature

Thermistor (ZTEMP). . . . . . . . . . . . . . . . . . 36

Test 2 - Cooling Set Point (CSP) and

Heating Set Point (HSP). . . . . . . . . . . . . . . 36

Test 3 - System Mode and Fan

Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Test 4 - LED Indicator Test (SYS ON,

HEAT, & COOL). . . . . . . . . . . . . . . . . . . . . . . 37

Programmable & Digital Zone Sensor

Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Testing Serial Communication

Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

RLCI Loss of Communications. . . . . . . . . 37

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Annually (Cooling Season) . . . . . . . . . . . . . . . 38

Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

SSP-SVX15C-EN

TTaabbllee ooff CCoonntteennttss

Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . 39

Wiring Diagram Matrix . . . . . . . . . . . . . . . . . . . . 40

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

Dimensional Data. . . . . . . . . . . . . . . . . . . . . . . . . . .

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

SSP-SVX15C-EN

Model Number Description

Heat Pump Condenser

T W A 120 A 3 0 0

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

All products are identified by a multiple-character model number that precisely identifies a particular type of unit. An explanation of the alphanumeric identification code is provided. Its use will enable the owner/operator, installing contractors, and service engineers to define the operation, specific components, and other options for any specific unit. 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

TWA = Split System Heat Pump

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

090 = 7.5 Tons (60Hz) 120 = 10 Tons (60Hz)

180 = 15 Tons (60Hz) 240 = 20 Tons (60Hz)

DDIIGGIITT 77:: MMaajjoorr DDeevveellooppmmeenntt SSeeqquueennccee

A = Single Compressor, Single Circuit, R-22 B = Dual Compressor, Dual Circuit, R-22

DDIIGGIITT 88:: EElleeccttrriiccaall CChhaarraacctteerriissttiiccss

3 = 208–230/60/3 4 = 460/60/3

DDIIGGIITTSS 99 -- 1100:: FFaaccttoorryy IInnssttaalllleedd OOppttiioonnss

00 = Packed Stock

DDIIGGIITTSS 1111:: MMiinnoorr DDeessiiggnn SSeeqquueennccee

* = Current Design Sequence

DDIIGGIITTSS 1122:: SSeerrvviiccee DDiiggiitt

* = Current Design Sequence

* *

* = sequential alpha character

SSP-SVX15C-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. 26 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 and dual 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 startup. 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.

SSP-SVX15C-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!!

FFaaiilluurree ttoo pprrooppeerrllyy lliifftt uunniitt ccoouulldd rreessuulltt iinn uunniitt ddrrooppppiinngg aanndd ppoossssiibbllyy ccrruusshhiinngg ooppeerraattoorr// tteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy,, aanndd eeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyy ddaammaaggee.. TTeesstt lliifftt uunniitt aapppprrooxxiimmaatteellyy 2244 iinncchheess ttoo vveerriiffyy pprrooppeerr cceenntteerr ooff ggrraavviittyy lliifftt ppooiinntt.. TToo aavvooiidd ddrrooppppiinngg ooff uunniitt,, rreeppoossiittiioonn lliiffttiinngg ppooiinntt iiff uunniitt iiss nnoott lleevveell..

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

UUssee sspprreeaaddeerr bbaarrss ttoo pprreevveenntt ssttrraappss ffrroomm ddaammaaggiinngg tthhee uunniitt.. IInnssttaallll tthhee bbaarrss bbeettwweeeenn lliiffttiinngg ssttrraappss,, bbootthh uunnddeerrnneeaatthh tthhee uunniitt aanndd aabboovvee tthhee uunniitt ttoo pprreevveenntt tthhee ssttrraappss ffrroomm ccrruusshhiinngg tthhee uunniitt ccaabbiinneett oorr ddaammaaggiinngg tthhee ffiinniisshh..

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. 14 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. 14). 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).

SSP-SVX15C-EN

Outd oor Unit

Gas (Suction ) Line - Insulated

Liquid Line Insulated

Unit Mounting Chan nels

Elevation (Mounting Fram e )

Roo f Trus sing

Ceiling

Roof Cons truction

6” Rad iu s

PPrree--IInnssttaallllaattiioonn

Unit Mounting

WWAARRNNIINNGG

MMoouunnttiinngg IInntteeggrriittyy!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonn bbeellooww ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy oorr ppoossssiibbllee eeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyy ddaammaaggee.. EEnnssuurree tthhee rrooooff ssttrruuccttuurree ssuuppppoorrttss aarree ssttrroonngg eennoouugghh ttoo ssuuppppoorrtt tthhee wweeiigghhtt ooff tthhee uunniitt aanndd aannyy aacccceessssoorriieess..

Structural Preparation

NNOOTTIICCEE

RRooooff DDaammaaggee!!

SSyysstteemm ccoonnttaaiinnss ooiill aanndd rreeffrriiggeerraanntt uunnddeerr hhiigghh pprreessssuurree.. RRooooffss sshhoouulldd bbee pprrootteecctteedd ffrroomm eexxppoossuurree ttoo ooiillss aanndd rreeffrriiggeerraanntt iinn tthhee ssyysstteemm.. IIff rrooooffttoopp iiss nnoott pprrootteecctteedd,, ddaammaaggee ttoo tthhee rrooooff mmaayy ooccccuurr..

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. 14. 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).

Snow Belt Recommendations

In regions where deep snow is encountered, raise the unit a minimum distance of 8 to 12 inches above the mounting surface. This will reduce the risk of snow blocking the coil and improves runoff of water produced during the defrost cycle. Avoid locating the unit where snow tends to drift. Snow accumulations must be removed from around the unit immediately to prevent drastic efficiency reduction. A snow drift barrier may be constructed around the unit to prevent snow blockage. Clearance between the snow barrier and the unit must comply with the clearances given in

”Dimensional Data drawings,” p. 10.

SSP-SVX15C-EN

Dimensional Data

Figure 2. Height, width and depth measurements

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

TWA090A

TWA120A

TWA180B, TWA240B 45.125 (1146.1) 52.125 (1324) 40 (1016)

39.125 (993.8) 42.125 (1070) 36 (914.4)

39.125 (993.8) 52.125 (1324) 40 (1016)

SSP-SVX15C-EN

BOTTOM OF UNIT

14 3/8"

(365.1)

26 15/16"

(684.2)

39 3/16"

(995.4)

3 1/16" (77.8)

2" (50.8)

33 13/1 6"

(858.8)

1/16"

(1.6)

(152.4)

21 11 /16"

(550.9)

34 3/4"

(882.7)

40 3/4"

(1035)

3" (76.2)

1 13/16"

(46)

27 11/ 16"

(703.3 )

2 5/16"

(58.7)

4 3/16"

(106.4)

33 15 /16"

(862)

36 3/8"

(923.9)

29 13/16"

(757.2)

8 5/16"

(211.1)

5 5/8"

(143)

35 15 /16"

(912.8 )

41 1/16"

(1043)

42 1/8"

(1070)

NOTES:

1. ACCESS OPENING IS FOR FIELD INSTALLED BAYLOAM ACCESS ORY.

2. MINIMUM CLEARANCE FOR PROPER OPERATION IS 36" ( 914.4) FROM WALLS, S HRUBBERY, P RIVACY FENCES ETC. MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72" (1828.8). RECOMMENDED S ERVICE CLEARANCE 48" (1219.2)

3. TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100" (2540) MINIMUM. UNIT SHOULD BE PLACED SO ROOF RUN-OFF WATER DOES NOT POUR DIRECTLY ON UNIT

4. OUTDOOR AIR TEMPERATURE SENSOR OPENING (DO NOT BLOCK OPENING)

SERVICE CLEARANCE 48" (1219.2) (S EE NOTE 2 FOR CLEARANCE)

SEE NOTE 1

REFRIGERANT ACCES S

HAIL GUARD (OPTIONAL)

SUCTION LINE

LIQUID LINE

CONTROL WIRING

LINE VOLTAGE

SER VICE P ANEL

HAIL GUARD (OPTIONAL)

SERVICE PANEL

SEE NOTE 3

SERVICE P ANEL SIDE

SEE NOTE 4

WITH HAIL GUARD

7/16" (11.1) DIA. ISOLATOR MOUNTING HOLES (OUTS IDE HOLES - 4 P LACES)

WITH HAIL GUARD

(152.4)

Figure 3. 7.5 ton heat pump, single compressor

DDiimmeennssiioonnaall DDaattaa

SSP-SVX15C-EN

BOTTOM OF UNIT

51 15/16"

(1319.2)

50 15/16"

(1293.8)

1/16" (1.6)

2 7/8" (73)

32 7/8"

(835)

44 3/4"

(1136.6)

25 11 /16"

(652.5)

6" (152. 4)

1 13/16" (46)

14 5/16"

(363.5)

37 11 /16"

(957.3)

44 3/4"

(1136.6)

50 3/4"

(1289)

3" (76.2)

31 11 /16"

(805)

3 13/16 "

(96.8)

2 3/16"

(55.6)

1 11/16"

(42.9)

37 15 /16"

(963.6)

42 5/16"

(1074.7)

35 3/4"

(908)

1 1/4" (31.7)

8 1/4"

(209.5)

5 9/16"

(141.3)

4 3/8" (111.1)

4" (101. 6)

4 1/4" (108)

39 15/16"

(1014.4)

7/16" (11.1) DIA. ISOLATOR MOUNTING HOLES (OUTS IDE HOLES - 4 PLACES)

NOTES :

1. ACCESS OPENING IS FOR FIELD INSTALLED BAYLOAM ACCESSORY.

2. MINIMUM CLEARANCE FOR PROPER OPERATION IS 36" (914.4) FROM WALLS, S HRUBBERY, PRIVACY FENCES ETC. MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72" (1828.8). RECOMMENDED SERVICE CLEARANCE 48" (1219.2)

3. TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100" (2540) MINIMUM. UNIT SHOULD BE PLACED SO ROOF RUN-OFF WATER DOES NOT POUR DIRECTLY ON UNIT

4. OUTDOOR AIR TEMPERATURE SENSOR OPENING (DO NOT BLOCK OPENING)

LIQUID LINE

SUCTION LINE

SERVICE P ANEL SIDE

SERVICE CLEARANCE 48" (1219.2) (S EE NOTE 2 FOR CLEARANCE

HAIL GUARD (OPTIONAL)

SERVICE PANEL

SEE NOTE 3

HAIL GUARD (OPTIONAL)

SERVICE P ANEL

CONTROL WIRING

LINE VOLTAGE

REFRIGERANT ACCES S

SEE NOTE 1

SEE NOTE 4

WITH HAIL GUARD

6" (152. 4)

DDiimmeennssiioonnaall DDaattaa

Figure 4. 10 ton heat pump, single compressor

SSP-SVX15C-EN

+ 28 hidden pages