Trane TWE061D-E***A, TWE090D-E**BA, TWE120D-E**BA, TWE150E**BA, TWE180E**BA Installation and Maintenance Manual

Installation, Operation,
and Maintenance

Split System Air Conditioners
Odyssey™™

Air Handler — 5 to 25 Tons

MMooddeell ((6600 HHzz))
TWE061D/E***A
TWE090D/E**BA
TWE120D/E**BA
TWE150E**BA
TWE180E**BA
TWE240E**BA
TWE300E**BA

MMooddeell ((5500 HHzz))
TWE051D***A
TWE076D/E***A
TWE101D/E***A
TWE126E***A
TWE156E***A
TWE201E***A
TWE251E***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

SSA-SVX06E-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!!

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!!

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..

©2015 Trane All rights reserved

SSA-SVX06E-EN

IInnttrroodduuccttiioonn

WWAARRNNIINNGG

RReeffrriiggeerraanntt uunnddeerr HHiigghh PPrreessssuurree!!

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!!

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..

Copyright

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

• With the change to Microchannel, the Odyssey split
system now offers a 50Hz, 6.25 standard air handler
(TWE076E) and a 60Hz, 7.5 ton standard/SZVAV/2­Speed VFD air handler (TWE090E). See
performance data for additional details on this new
split system.

• Odyssey air handlers now have the ability to
convert from Single Zone VAV to 2–Speed Fan
control in order to comply with certain sections of
California Title 24 and ASHRAE 90.1. See

“Installation, 2-Speed VFD Units,” p. 25 for

configuration details.

SSA-SVX06E-EN

3

Table of Contents

Model Number Description. . . . . . . . . . . . . . . . . 5

Air Handler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

General Information . .. . . . . . . . . . . . . .. . . . . . . . 6

Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pre-Installation . . . . . . . . . . . . . . . . . . . . . .. . . . . . . 7

Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Inspection Checklist . . . . . . . . . . . . . . . . . . . 7

Testing for Leaks. . . . . . . . . . . . . . . . . . . . . . . . . . 7

Lifting Recommendations . . . . . . . . . . . . . . . . . 7

Repositioning Drain Pan. . . . . . . . . . . . . . . . . . . 7

Field Conversion to 460 Volt . . . . . . . . . . . . . . . 9

Converting Motor to 460 Volt. . . . . . . . . . . 9

Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . 9

Reorienting Evaporator Coil

(TWE126/150 and 156/180) . . . . . . . . . . . . . 9

Preparation for Refrigerant

Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Installations, Limitations and

Recommendations. . . . . . . . . . . . . . . . . . . . . . . 10

Dimensional Data . . . . . . . . . . . . . .. . . . . . . . . . . 11

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

Air Handler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Air Flow Settings . . . . . . . . . . . . . . . . . . . . . . . . 24

Standard Units. . . . . . . . . . . . . . . . . . . . . . . 24

SZVAV Units . . . . . . . . . . . . . . . . . . . . . . . . . 24

2-Speed VFD Units . . . . . . . . . . . . . . . . . . . 25

Minimum Supply Fan Output . . . . . . . . . 25

Electrical Connections . . . . . . . . . . . . . . . . . . . 26

Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

EDC Switch Wiring . . . . . . . . . . . . . . . . . . . 27

Heating and Cooling Setpoint

Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Checkout Procedure . . . . . . . . . . . . . . . . . . . . . 28

Installation Checklist . . . . . . . . . . . . . . . . . . . . . 28

Thermostat and Control

Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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

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

Electrical Data . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 31

60 Hz Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

50 Hz Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Start-Up . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . . . . . . 42

Sequence of Operation. . . . . . . . . . . . . . . . . . . 42

Variable Air Volume Applications

(SZVAV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2–Speed VFD Applications . . . . . . . . . . . . 43

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

Horizontal Suspension . . . . . . . . . . . . . . . . . . . 22

Leveling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Auxiliary Drain Pan. . . . . . . . . . . . . . . . . . . 22

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

Condensate Piping. . . . . . . . . . . . . . . . . . . . . . . 23

Filter Replacement. . . . . . . . . . . . . . . . . . . . . . . 23

Duct Connections. . . . . . . . . . . . . . . . . . . . . . . . 24

Maintenance . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 44

Fan Belt Adjustment . . . . . . . . . . . . . . . . . . . . . 44

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Annually (Cooling Season) . . . . . . . . . . . . . . . 45

Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . 46

Wiring Diagram Matrix . . . . . . . . . . . . . . . . . . .. 47

4

SSA-SVX06E-EN

Model Number Description

Air Handler

T WE 2 40 E D 0 0 * *

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

T WE 201 E 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

TWE = Split System Heat Pump/Cooling Air Handler

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

061 = 5 Tons (60 Hz)
090 = 7.5 Tons (60 Hz)
120 = 10 Tons (60 Hz)
150 = 12.5 Tons (60 Hz)
180 = 15 Tons (60 Hz)
240 = 20 Tons (60 Hz)
300 = 25 Tons (60 Hz)
051 = 4.6 Tons (50 Hz)
076 = 6.25 Tons (50 Hz)
101 = 8.33 Tons (50 Hz)
126 = 10.4 Tons (50 Hz)
156 = 13.0 Tons (50 Hz)
201 = 16.7 Tons (50 Hz)
251 = 20.9 Tons (50 Hz)

DDIIGGIITT 77:: MMaajjoorr DDeevveellooppmmeenntt SSeeqquueennccee

D = Single Refrigeration Circuit
E = Dual Refrigeration Circuit

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 (Standard)
03 = 2-Speed Variable Frequency Drive (VFD) standard

motor (electromechanical condenser only)
04 = 2-Speed Variable Frequency Drive (VFD) oversized

motor (electromechanical condenser only)
R3 = Single Zone Variable Air Volume (VFD) standard

motor - (ReliaTel condenser only)
R4 = Single Zone Variable Air Volume (VFD) oversized
motor - (ReliaTel condenser only)

DDIIGGIITTSS 1111:: MMiinnoorr DDeessiiggnn SSeeqquueennccee

* = Current Design Sequence

1

DDIIGGIITTSS 1122:: SSeerrvviiccee DDiiggiitt

* = Current Design Sequence

1

1.

* = sequential alpha character

SSA-SVX06E-EN

5

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 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 air handler models incorporate a single slab coil
assembly, improved application flexibility, servicing,
maintenance accessibility and an improved accessory
line. They are fully convertible, (vertical to horizontal
discharge) without field removal of the coil assembly.
They are shipped ready for horizontal installation.

All units have one drain pan that can be installed in any
one of four positions. This allows for vertical or
horizontal applications and right or left exit.

IImmppoorrttaanntt:: All dual circuit (digit 7 = E) have an

intertwined coil, except for the 25 ton,
TWE251 and TWE300 units.

6

SSA-SVX06E-EN

Pre-Installation

The final position for the air handler must be dictated
by required service access to it, weight distribution
over structural supports, and by the locations of
electrical, refrigerant and condensate drainage
connections. After this is determined, the following
preparations should be made.

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 TWE 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!!

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. 20 for
approximate unit weights.

The crated unit can be moved using a forklift of suitable
capacity. For lifting the unit into an elevated mounting
position, run lifting straps or slings under the unit and
attach securely to the lifting device.

Repositioning Drain Pan

Air handlers come with one drain pan that can be
installed in any one of four positions; this allows for
vertical or horizontal application and right or left
condensate line connection.

NNoottee:: Important! All air handlers are shipped with the

drain pan installed in the horizontal position and
the connection on the left side (as shown in

Figure 1, p. 8. If an alternate position is required,

the drain pan should be repositioned before
setting the air handler.

1. Remove the access plate at the opposite end of the
drain connection. This plate secures and lifts the
back end of the drain pan for sloping. It must be
removed before the drain pan can be removed. This
is done as follows:

a. Remove the screw

b. Lift the access plate up

c. Pull the plate out. If the drain pan is to be moved

to the vertical position also remove the other
two access plates.

2. Remove the screw securing the drain pan.

a. Lift the pan up

b. Slide the pan out

3. Install the drain pan into the new position.

SSA-SVX06E-EN

7

PPrree--IInnssttaallllaattiioonn

a. Slide the drain pan into the opening

b. Lift the drain pan up

c. Push it in all the way

d. Drop it down over the lip of the opening, secure

with screw

4. Install the access plate on the opposite end of the
drain pain.

a. Slide the edge of the access plate under the

drain pan

b. Lift the access plate and drain pan up

c. Push the access plate in

d. Drop the access plate down over the lip of the

opening, secure with screw

NNoottee:: If the drain pan is being moved to the vertical

position, install the other access plates over
the horizontal position opening

Figure 1. Drain pan location

Figure 2. Drain pan relocation

NNOOTTIICCEE

SSyysstteemm CCoommppoonneenntt DDaammaaggee!!

TThheessee aaiirr hhaannddlleerrss aarree sshhiippppeedd wwiitthh aa ddrryy nniittrrooggeenn
hhoollddiinngg cchhaarrggee iinn tthhee ccooiill.. DDeepprreessss oorr rreemmoovvee tthhee
aacccceessss vvaallvvee ccoonnee ttoo bblleeeedd ooffff tthhee nniittrrooggeenn pprriioorr ttoo
bbrraazziinngg.. TTeemmppoorraarriillyy ccaapp ooffff ttuubbeess iiff tthhee
rreeffrriiggeerraanntt lliinnee ccoonnnneeccttiioonnss aarree ttoo bbee mmaaddee llaatteerr..

8

SSA-SVX06E-EN

To cha nge voltage , pull plug, ro tate 18 0° a nd reins e rt

VIE W OF TERMI NAL EN D

GENERAL

ELECTRIC™

MARATHON™

HIGH LOW

HIGH LOW

To cha nge voltage , pull s e lect or plu g o ut, sh ift plug

to align arrow t o 460V for h igh voltage or 23 0V for
low volta ge a s de sire d . Pus h p lug back in.

460V

ver

Conn e ct lines to L1, L2, L3

To revers e rota tion, intercha n ge a ny two lin e conn ect ions

PPrree--IInnssttaallllaattiioonn

Field Conversion to 460 Volt

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!

DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss aanndd ddiisscchhaarrggee aallll mmoottoorr ssttaarrtt//rruunn
ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr lloocckkoouutt//
ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbee
iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. FFoorr vvaarriiaabbllee ffrreeqquueennccyy
ddrriivveess oorr ootthheerr eenneerrggyy ssttoorriinngg ccoommppoonneennttss
pprroovviiddeedd bbyy TTrraannee oorr ootthheerrss,, rreeffeerr ttoo tthhee
aapppprroopprriiaattee mmaannuuffaaccttuurreerr’’ss lliitteerraattuurree ffoorr
aalllloowwaabbllee wwaaiittiinngg ppeerriiooddss ffoorr ddiisscchhaarrggee ooff
ccaappaacciittoorrss.. VVeerriiffyy wwiitthh aann aapppprroopprriiaattee vvoollttmmeetteerr
tthhaatt aallll ccaappaacciittoorrss hhaavvee ddiisscchhaarrggeedd..

FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee ssaaffee
ddiisscchhaarrggee ooff ccaappaacciittoorrss,, sseeee PPRROODD--SSVVBB0066AA--EENN..

WWAARRNNIINNGG

PPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinngg
RReeqquuiirreedd!!

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..

• Available power supply must agree with electrical
data on component nameplate.

• Some standard air handlers are shipped wired for
208-230 volt applications and can be converted for
460 volt by rewiring the blower motor. (This
includes models TWE090D3, TWE090E3,
TWE120D3, TWE120E3, TWE150E3 and TWE180E3).

Converting Motor to 460 Volt

1. Ensure power is disconnected to unit by following
the warning above.

2. Remove unit access panels closest to motor.

3. Open terminal cover on lead end of motor.

4. Pull voltage selector plug from low voltage
selection (see Figure 3, p. 9).

5. Shift the plug (or rotate 180°) to align plug for high
voltage selection and re-insert plug.

IImmppoorrttaanntt:: When re-inserting voltage selection

plug, ensure it is fully seated.

6. Replace terminal cover on lead end of motor.

7. Replace unit access panels.

Figure 3. Voltage change plug

Refrigerant Piping

Reorienting Evaporator Coil (TWE126/ 150 and 156/180)

IImmppoorrttaanntt:: Applies to TWE126/150 and 156/180 when

positioned for vertical upflow. Unit is
shipped in the horizontal position. If
installing in the vveerrttiiccaall ppoossiittiioonn, the coil
mmuusstt bbee reoriented by rotating the coil 4
degrees (control box side) from the
shipped position.

1. Remove screws from top evaporator coil bracket
(bracket that attaches coil to cabinet and runs the
length of the unit).

2. Rotate evaporator coil approximately 4 degrees
clockwise - looking from the control box end. When
the evaporator coil is rotated, the lower set of
evaporator coil bracket holes will align with the
support bracket (from which it was originally
fastened).

3. Reinsert screws in evaporator coil bracket.

SSA-SVX06E-EN

9

Top bracket screws

Rotate 4°
clockwise

PPrree--IInnssttaallllaattiioonn

Figure 4. Evaporator coil reorientation for TWE126,
150, 156, 180

Preparation for Refrigerant Piping

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

DDoo nnoott aappppllyy hheeaatt ttoo rreemmoovvee sseeaall ccaappss uunnttiill tthhee
ggaauuggee ppoorrtt ccoorreess hhaavvee bbeeeenn rreemmoovveedd.. IIff sseeaall ccaappss
aarree iinnttaacctt,, aapppplliiccaattiioonn ooff hheeaatt mmaayy ggeenneerraattee
eexxcceessssiivvee pprreessssuurree iinn tthhee uunniitt aanndd rreessuulltt iinn
ddaammaaggee ttoo tthhee ccooiill oorr eexxppaannssiioonn vvaallvvee..

The air handler is designed so that refrigerant piping
can enter from either the right or left hand side. It is
shipped with the intent that the refrigerant lines will
enter from the left hand side. To convert to right hand
entry, unbraze the elbow on the suction line and rotate
180° and rebraze.

IImmppoorrttaanntt:: Access to refrigerant lines is limited in all

horizontal and some vertical applications.
Therefore, refrigerant lines should be
stubbed out and temporarily capped prior
to setting the air handler. Protect adjacent
surfaces from heat damage when brazing
in and around the air handler.

Installations, Limitations and Recommendations

NNOOTTIICCEE

SSyysstteemm CCoommppoonneenntt DDaammaaggee!!

PPrrooppeerrllyy iinnssuullaattee aallll rreeffrriiggeerraanntt ggaass ppiippiinngg ttoo
pprreevveenntt ppoossssiibbllee wwaatteerr ddaammaaggee dduuee ttoo
ccoonnddeennssaattiioonn aanndd ttoo pprreevveenntt ccaappaacciittyy lloossss aanndd
ppoossssiibbllee ccoommpprreessssoorr ddaammaaggee..

The general location of the air handler is normally
selected by the architect, contractor and/or buyer. For
proper installation, the following items must be
considered:

• Available power supply must agree with electrical
data on component nameplate.

• If external accessories are installed on the unit,
additional clearances must be provided.

• All duct work should be properly insulated to
prevent condensation and heat loss.

• Refrigerant gas piping must be insulated.

It is recommended that the outline drawings in the
Dimensional Data section be studied and dimensions
properly noted and checked against the selected
installation site. By noting in advance which features
are to be used, proper clearance allowances can be
made for installation and possible future service.

IImmppoorrttaanntt:: When installing these units “free standing”

with discharge grills and isolators, a top
support with isolator should be added to
prevent tipping. Support and isolator can
be attached to a wall or other appropriate
structure.

If adding external accessories to the unit,
additional clearances must be considered
for the overall space needed.

For installation of accessories available for this air
handler, follow the installation instructions that are
shipped with each accessory.

10

SSA-SVX06E-EN

Dimensional Data

H

D

W

Figure 5. Height, width and depth measurements

Model Number

TWE051, 061 48-1/8 (1222.4) 39-5/8 (1006.5) 23-5/8 (600.0)

TWE076, 090 54-1/8 (1374.8) 49-1/8 (1247.8) 26-1/2 (673.1)

TWE101, 120 54-1/8 (1374.8) 65-1/8 (1654.2) 26-1/2 (673.1)

TWE126, 150, 156, 180 69-1/8 (1756.0) 81-1/4 (2063.7) 30 (762.0)

TWE201, 240, 251, 300 71-7/8 (1806.6) 94-1/4 (2394.0) 32-1/8 (816.0)

Note: Full dimensional data is available on the following pages.

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

SSA-SVX06E-EN

11

3" (76.2)

48 1/16"
(1220. 8)

10 7/16"

(265. 1)

34 9/16"

(877. 9)

35 5/8"

(904. 9)

1 1/8"

(28.6)

12"

(304. 8)

13 9/16" (344.5)

20 1/16"

(509. 6)

1 11/16"

(42.9)

5 15/16"

(150. 8)

13 3/16" (335)

12"

(304.8)

13 9/16"

(344.5)

13 5/16"
(338.14)

1 3/4"

(44.45)

2 3/4"

(69.9)

DRAIN CONNECTION
FOR HORIZONTAL
(SEE NOTE 2,3,5)

32 1/2"

(825.5)

12 7/16"

(315.9)

1 3/8"

(34.9)

.99" (25.15)

.99" (25.15)
1 3/8" (34.9)

3 3/16" (81)

3 7/16" (87.3)

22 5/8"

(574.7)

22 5/8"

(574.7)

16 1/4"

(412.8)

.77"

(19.6)

.50" (12.7)

3 9/16"

(90.5)

7 9/16"

(192.1)

37 15/16"

(963.6)

24 1/16"

(611.2)

2 5/16"

(58.7)

6 7/8"

(174.6)

6 15/16" (176.2)

BOTTOM RETURN

SIDE RETURN

CONTROL BOX

ACCES S P ANEL

NOTES :

1. P ANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, PLASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOSITE DRAIN CONNECTION MUST BE REMOVED TO
S LIDE DRAIN PAN OUT OF UNIT FOR CLEANING. ACCES S P LATE MUST BE RE-INSTALLED AFTER
S LIDING DRAIN PAN BACK INTO UNIT.

3. IF P ERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN PAN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC PIPE DRAIN CONNECTION VERTICAL CONFIGURATION.

5. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC PIPE DRAIN CONNECTION HORIZONTAL CONFIGURATION.

SEE NOTES 2,3,4

SEE NOTES 2,3,4

(4) - HOLE FOR HORIZONTAL
SUS PENSION

COP PER LIQUID LINE
FIELD CONNECTION

COPPER SUCTION LINE
FIELD CONNECTION

LIQUID LINES

1 3/8" (34.9) O.D. SUCTION LINE

REMOTE BULB TXV

FILTER ACCES S PANEL
22" (558.8) MIN. DISTANCE
BOTH SIDE

FILTER

SUP PLY OPENING

BOTTOM RETURN

SIDE RETURN

BOTTOM RETURN

SUP PLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

(4) - HOLE FOR HORIZONTAL
SUS PENS ION

SIDE RETURN

CONTROL WIRING

LINE VOLTAGE

DUCT FLANGE

1" (25.4)
HEIGHT

SUP PLY

OPEN

HEATER
VENTILATION

HEATER CONTROL
AND SINGLE POWER
ENTRY WIRES

32 1/2"
(825.5)

2 3/4"
(69.9)

DDiimmeennssiioonnaall DDaattaa

Figure 6. 4.6, 5 ton air handler, single circuit

12

SSA-SVX06E-EN

Figure 7. 5 ton air handler, dual circuit

3" (76.2)

48 1/16"

(1220. 8)

10 7/16"

(265. 1)

34 9/16"

(877. 9)

35 5/8"

(904. 9)

1 1/8"

(28.6)

12"

(304. 8)

13 9/16"

(344. 5)

20 1/16"

(509. 6)

1 11/16"

(42.9)

5 15/16"

(150. 8)

13 3/16" (335)

16 1/8"

(409. 6)

17 5/16"

(439. 7)

17 7/8"

(454)

12"

(304.8)

13 9/16"

(344.5)

16 1/8"

(409.6)

17 5/16"

(439.7)

3 5/16"

(338.14)

1 3/4"

(44.45)

2 3/4"

(69.8)

32 1/2"

(825.5)

DRAIN CONNECTION
FOR HORIZONTAL
(SEE NOTE 2,3,5)

12 7/16"

(315. 9)

3 11/16" (93.7)

1 11/16" (42.9)

1 3/8" (34.9)

.99" (25.15)

.99" (25.15)

1 3/8" (34.9)

1 11/16" (42.9)

3 3/16" (81)

3 11/16" (93.7)

3 7/16" (87.3)

22 5/8"

(574. 7)

1 13/16"

(46.04)

22 5/8"

(574. 7)

16 1/4"

(412. 8)

.77" (19.6)

.50" (12.7)

3 9/16"

(90.5)

7 9/16"

(192. 1)

37 15/16"

(963. 6)

24 1/16"

(611. 2)

2 5/16"

(58.7)

6 7/8"

(174. 6)

6 15/16"

(176. 2)

BOTTOM RETURN

SIDE RETURN

DUCT FLANGE
1" (25.4) HEIGHT

SUP PLY

OPEN

CONTROL WIRING

LINE VOLTAGE

CONTROL BOX

ACCES S PANEL

NOTES:

1. PANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, P LASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOS ITE DRAIN CONNECTION MUST BE REMOVED TO
S LIDE DRAIN PAN OUT OF UNIT FOR CLEANING. ACCESS PLATE MUST BE RE-INSTALLED AFTER
S LIDING DRAIN PAN BACK INTO UNIT.

3. IF PERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC PIPE DRAIN CONNECTION VE

RTICAL CONFIGURATION.

5. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC PIPE DRAIN CONNECTION HORIZONTAL CONF IGURATION.

SEE NOTES 2,3,4

SEE NOTES 2,3,4

SUPPLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

(4) - HOLE FOR HORIZONTAL
SUS PENSION

COP PER LIQUID LINE
FIELD CONNECTION

COP PER SUCTION LINE
FIELD CONNECTION

LIQUID LINES

(2) REMOTE BULB TXV

FILTER ACCESS PANEL
22" (558.8) MIN. DISTANCE

BOTH S IDE

SIDE RETURN

SIDE R ETURN

BOTTOM RETURN

BOTTOM RETURN

SUP PLY OPENING

FILTER

(4) HOLE FOR
HORIZONTAL
SUS PENSION

DRAIN CONNECTION

SUCTION LINE

COP PER LIQUID LINE
FIELD CONNECTION

HEATER
VENTILATION

HEATER CONTROL
AND SINGLE P OWER
ENTRY WIRES

32 1/2"
(825.5)

2 3/4"
(69.8)

DDiimmeennssiioonnaall DDaattaa

SSA-SVX06E-EN

13

16 7/8"

(428.6)

1 13/16"

(46)

2 3/4"

(69.85)

42"

(1066.8)

1 9/16"

(39.7)

16 1/16"

(408)

16"

(406. 4)

8 13/16" (223.8)

3 1/2" (88.9)

1 3/16" (30.2)

22 7/8"

(581)

45 1/8"

(1146. 2)

6 3/4"

(171. 45)

36 7/8"

(936. 6)

10 7/16"

(265. 1)

54 1/16"

(1373. 2)

1 3/16" (30.16)

16 11/16"

(423. 9)

17 7/16"

(442. 9)

20"

(508)

3 5/8" (92.1)

1 11/16" (42.9)

16 11/16"

(423.9)

17 3/8"

(441.3)

1 9/16" (39.7)

3 1/2" (88.9)

25 1/2"

(647. 7)

16 1/4"

(412. 8)

.70"

(17.8)

25 1/2"

(647. 7)

24 1/16"

(611. 2)

11 11/16"

(296. 8)

47 1/2"

(1206. 5)

8 5/16"

(211. 1)

12 5/16"

(312. 7)

2 1/4" (57.15)

6 13/16"

(173)

BOTTOM RETURN

SIDE RETURN

CONTROL BOX

ACCESS PANEL

NOTES:

1. PANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, PLASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOS ITE DRAIN CONNECTION MUST BE REMOVED TO
SLIDE DRAIN PAN OUT OF UNIT FOR CLEANING. ACCES S PLATE MUST BE RE-INSTALLED AFTER
SLIDING DRAIN PAN BACK INTO UNIT.

3. IF PERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN PAN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC P IPE DRAIN CONNECTION VE

RTICAL CONFIGURATION.

5. 1" (25.4) FEMALE S CHED. 40 (10.2) P VC PIPE DRAIN CONNECTION HORIZONTAL CONFIGURATION.

SEE NOTES 2,3,4

SEE NOTES 2,3,4

(4) - HOLE FOR
HORIZONTAL SUSPENSION

COP PER LIQUID LINE
FIELD CONNECTION

COPPER SUCTION LINE
FIELD CONNECTION

LIQUID LINES

SUCTION LINE

REMOTE BULB TXV

FILTER ACCESS PANEL
22" (558.8) MIN. DISTANCE
BOTH S IDE

DRAIN CONNECTION

FOR HORIZONTAL

(SEE NOTE 2,3,5)

FILTER

BOTTOM RETURN

SUP PLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

(4) HOLE FOR
HORIZONTAL
SUS PENSION

SIDE RETURN

BOTTOM RETURN

SIDE RETURN

SUP PLY OPENING

CONTROL WIRING

LINE VOLTAGE

DUCT FLANGE
1" (25.4)

HEIGHT

SUP PLY

OPEN

HEATER
VENTILATION

HEATER CONTROL
AND SINGLE P OWER
ENTRY WIRES

42"

(1066.8)

2 3/4"

(69.85)

DDiimmeennssiioonnaall DDaattaa

Figure 8. 6.25, 7.5 ton air handler, single circuit

14

SSA-SVX06E-EN

Figure 9. 6.25, 7.5 ton air handler, dual circuit

16 7/8"

(406.4)

1 13/16"

(46)

2 3/4"

(69.9)

42"

(1066.8)

1 9/16"

(39.7)

16 1/16"

(408)

20 1/16"

(509.6)

16 3/4"

(425.5)

16 1/4"

(412.8)

13 3/4"

(349.3)

3 5/8" (92.1)

1 5/8" (41.3)

1 5/16" (33.3)

11 1/16"

(281)

13 3/4"

(349. 2)

16 1/4"

(412. 8)

16 3/4"

(425. 5)

19 1/16"

(484. 2)

20 1/16"

(509.6)

3 5/8" (92.1)

1 5/8" (41.3)

1 5/16" (33.3)

16"

(406. 4)

8 13/16" (223.8)

3 1/2" (88.9)

1 3/16" (30.2)

22 7/8"

(581)

45 1/8"

(1146. 2)

6 3/4"

(171. 5)

36 7/8"

(936. 6)

10 7/16"

(265. 1)

54 1/16"

(1373. 2)

1 3/16" (30.2)

25 1/2"

(647. 7)

16 1/4"

(412. 8)

.70"

(17.78)

25 1/2"

(647. 7)

24 1/16"

(611. 2)

11 11/16"

(296. 9)

47 1/2"

(1206. 5)

8 5/16"

(211. 1)

12 5/16"

(312. 7)

2 1/4" (57.15)

6 13/16" (173)

BOTTOM RETURN

SIDE RETURN

CONTROL WIRING

LINE VOLTAGE

CONTROL BOX

ACCES S PANEL

NOTES :

1. PANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, PLASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOS ITE DRAIN CONNECTION MUST BE REMOVED TO
SLIDE DRAIN PAN OUT OF UNIT FOR CLEANING. ACCESS PLATE MUST BE RE-INSTALLED AFTER
SLIDING DRAIN PAN BACK INTO UNIT.

3. IF PERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN PAN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC PIPE DRAIN CONNECTION VERTICAL CONFIGURATION.

5. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC PIPE DRAIN CONNECTION HORIZONTAL CONFIGURATION.

SEE NOTES 2,3,4

SEE NOTES 2,3,4

(4) - HOLE FOR HORIZONTAL
SUS PENSION

COP PER LIQUID LINE
FIELD CONNECTION

COP PER SUCTION LINE

FIELD CONNECTION

LIQUID LINES

SUCTION LINE

(2) REMOTE BULB TXV

FILTER ACCESS PANEL
22" (559) MIN. DISTANCE
BOTH S IDE

DRAIN CONNECTION

FOR HORIZONTAL

(SEE NOTE 2,3,5)

FILTER

SUP PLY OPENING

BOTTOM RETURN

SIDE RETURN

BOTTOM RETURN

SUP PLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

(4) HOLE FOR
HORIZONTAL
SUS PENSION

SIDE RETURN

DUCT FLANGE
1" (25.4)

HEIGHT

SUP PLY

OPEN

HEATER

VENTILATION

HEATER CONTROL

AND SINGLE P OWER

ENTRY WIRES

42"

(1066.8)

2 3/4"

(69.9)

DDiimmeennssiioonnaall DDaattaa

SSA-SVX06E-EN

15

3 1/2" (89)

8 7/8"

(225. 4)

16 1/16"

(408)

1 3/16"

(30.2)

22 7/8"

(581)

61 1/8"

(1552. 6)

6 3/4"

(171. 45)

36 7/8"

(936. 63)

10 7/16" (265.1)

54 1/16"

(1373. 2)

58"

(1473.2)

2 3/4"

(69.8)

1 13/16"

(46)

16 7/8"

(428.6)

15 15/16"

(404. 8)

1 11/16"

(42.9)

16 11/16"

(423. 9)

17 3/8"

(441. 4)

20"

(508)

1 11/16" (42.9)

3 5/8" (92.1)

16 11/16"

(423.9)

17 3/8"

(441.3)

1 11/16" (42.9)

3 5/8" (92.1)

63 1/2"

(1613)

1 3/16" (30.2)

16 1/4"

(412. 8)

.70" (17.8)

25 1/2"

(647. 7)

19 11/16"

(500. 1)

24 1/16"

(611. 2)

63 1/2"

(1612. 9)

20 5/16"

(515. 9)

16 5/16"

(414. 3)

2 1/4" (57.2)

6 13/16" (173)

BOTTOM RETURN

SIDE RETURN

CONTROL BOX

ACCES S PANEL

NOTES:

1. PANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, PLASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOS ITE DRAIN CONNECTION MUST BE REMOVED TO
S LIDE DRAIN PAN OUT OF UNIT FOR CLEANING. ACCESS PLATE MUST BE RE-INSTALLED AFTER
S LIDING DRAIN PAN BACK INTO UNIT.

3. IF PERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN PAN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED. 40 (10.2) P VC PIPE DRAIN CONNECTION VERTICAL CONFIGURATION.

5. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC P IPE DRAIN CONNECTION HORIZONTAL CONFIGURATION.

SEE NOTES
2,3,4

SEE NOTES 2,3,4

COP PER LIQUID LINE
FIELD CONNECTION

COP PER SUCTION LINE
FIELD CONNECTION

LIQUID LINES

SUCTION LINE

REMOTE BULB TXV

FILTER ACCESS PANEL
22" (559) MIN. DISTANCE
BOTH S IDE

DRAIN CONNECTION

FOR HORIZONTAL

(SEE NOTE 2,3,5)

BOTTOM RETURN

SUP PLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

SUPPLY OP ENING

SIDE RETURN

(4) - HOLE FOR
HORIZONTAL
SUS PENSION

CONTROL WIRING

LINE VOLTAGE

DUCT FLANGE

1" (25.4)
HEIGHT

SUP PLY

OPEN

HEATER
VENTILATION

HEATER CONTROL

AND SINGLE P OWER

ENTRY WIRES

25 1/2"
(647. 7)

58"

(1473.2)

2 3/4"
(69.8)

BOTTOM RETURN

SIDE RETURN

(4) HOLE FOR
HORIZONTAL
SUS PENSION

FILTER

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

DDiimmeennssiioonnaall DDaattaa

Figure 10. 8.33, 10 ton air handler, single circuit

16

SSA-SVX06E-EN

3 1/2" (89)

8 7/8"

(225. 4)

16 1/16"

(408)

1 3/16"

(30.2)

22 7/8"

(581)

61 1/8"

(1552. 6)

6 3/4"

(171. 45)

36 7/8"

(936. 6)

10 7/16" (265.1)

54 1/16"

(1373. 2)

11" (279.4)

13 11/16"

(347. 7)

16 1/4"

(412. 8)

16 11/16"

(423. 9)

19"

(482.6)

20"

(508)

1 5/16" (33.4)

1 5/8" (41.3)

3 5/8" (92.1)

3 5/8" (92.1)

1 5/8" (41.3)

1 5/16" (33.3)

13 3/4"

(349.3)

16 1/4"

(412.8)

16 3/4"

(425.5)

20 1/16"

(509.6)

58"

(1473.2)

2 3/4"

(69.8)

1 13/16"

(46)

16 7/8"

(428.6)

15 15/16"

(404. 8)

1 11/16"

(42.9)

1 3/16"

(30.2)

25 1/2"

(647. 7)

16 1/4"

(412. 7)

.70" (17.8)

25 1/2"

(647. 7)

19 11/16"

(500. 1)

24 1/16"

(611. 2)

63 1/2"

(1613)

20 5/16"

(515. 9)

16 5/16"

(414. 3)

2 1/4" (57.15)

6 13/16" (173)

BOTTOM RETURN

SIDE RETURN

CONTROL BOX

ACCES S PANEL

NOTES:

1. PANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, PLASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOS ITE DRAIN CONNECTION MUST BE REMOVED TO
S LIDE DRAIN PAN OUT OF UNIT FOR CLEANING. ACCESS PLATE MUST BE RE-INSTALLED AFTER
S LIDING DRAIN PAN BACK INTO UNIT.

3. IF PERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN PAN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED. 40 (10.2) P VC PIPE DRAIN CONNECTION VERTICAL CONFIGURATION.

5. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC PIPE DRAIN CONNECTION HORIZONTAL CONFIGURATION.

SEE NOTES
2,3,4

SEE NOTES 2,3,4

(4) - HOLE FOR HORIZONTAL
SUS PENSION

COP PER LIQUID LINE
FIELD CONNECTION

COP PER SUCTION LINE
FIELD CONNECTION

SUCTION LINE

(2) REMOTE BULB TXV

FILTER ACCESS PANEL
22" (558.8) MIN. DISTANCE

BOTH S IDE

DRAIN CONNECTION

FOR HORIZONTAL

(SEE NOTE 2,3,5)

LIQUID LINES

FILTER

BOTTOM RETURN

SIDE RETURN

BOTTOM RETURN

SUP PLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

SIDE RETURN

SUP PLY OPENING

(4) HOLE FOR
HORIZONTAL
SUS PENSION

CONTROL WIRING

LINE VOLTAGE

DUCT FLANGE
1" (25.4)

HEIGHT

SUP PLY

OPEN

HEATER

VENTILATION

HEATER CONTROL

AND SINGLE P OWER

ENTRY WIRES

58"

(1473.2)

2 3/4"
(69.8)

Figure 11. 8.33, 10 ton air handler, dual circuit

DDiimmeennssiioonnaall DDaattaa

SSA-SVX06E-EN

17

19 1/2"

(495.3)

74 1/8"

(1882.8)

3 7/16" (87.3)

2 3/4"

(69.8)

17 7/8"

(454)

3 5/16" (84.1)

4 1/4" (108)

20"

(508)

12 13/16" (325.4)

22"

(558.8)

21 1/2"

(546. 1)

18 11/16"

(474. 7)

18 5/16"

(465. 1)

15 13/16"

(401. 6)

12" (304.8)

21 1/2"

(546.1)

1 5/16" (33.3)

2 1/8" (54)

2 7/16" (62)

4 1/4" (108)

25 1/8"

(638. 2)

18 11/16"

(474.6)

18 3/8"

(466.7)

15 13/16"

(401.64)

4 1/8" (104.8)

2 5/16" (58.7)

2" (50.8)

9 5/8"

(244. 5)

48"

(1219. 2)

11 7/16" (290.5)

1 3/16"

(30.2)

69 1/16"

(1754. 2)

79 5/8"

(2022. 5)

1 1/4"

(31.8)

77 3/16"

(1960. 6)

29 1/16"

(738. 2)

2 7/8" (73)

16 5/16"

(414. 3)

29 1/16"

(738. 2)

4 5/16" (109.5)

12 1/8"

(308)

79 9/16"

(2020. 9)

54 15/16"

(1395. 4)

12 3/8" (314.3)

BOTTOM RETURN

SIDE RETURN

CONTROL BOX

ACCES S PANEL

NOTES:

1. PANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, PLASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOS ITE DRAIN CONNECTION MUST BE REMOVED TO
S LIDE DRAIN PAN OUT OF UNIT FOR CLEANING. ACCESS PLATE MUST BE RE-INSTALLED AFTER SLIDING
DRAIN PAN BACK INTO UNIT.

3. IF PERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN PAN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED. 40 (10.2) P VC PIPE DRAIN CONNECTION VERTICAL CONFIGURATION.

5. 1" (25.4) FEMALE SCHED. 40 (10.2) PVC P IPE DRAIN CONNECTION HORIZONTAL CONFIGURATION.

SEE NOTES
2,3,4

SEE NOTES 2,3,4

(4) - HOLE FOR HORIZONTAL
SUS PENSION

COPPER LIQUID LINE
FIELD CONNECTION

COP PER SUCTION LINE
FIELD CONNECTION

LIQUID LINES

SUCTION LINE

(2) REMOTE BULB TXV

FILTER ACCESS PANEL
22" (559) MIN.

DISTANCE

BOTH S IDE

DRAIN CONNECTION

FOR HORIZONTAL

(SEE NOTE 2,3,5)

SIDE RETURN

BOTTOM RETURN

FILTER

SUP PLY OPENING

BOTTOM RETURN

SIDE RETURN

BOTTOM RETURN

SUP PLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

(4) HOLE FOR
HORIZONTAL
SUS PENSION

SIDE RETURN

CONTROL WIRING

LINE VOLTAGE

DUCT FLANGE
1" (25.4)

HEIGHT

SUP PLY

OPEN

HEATER CONTROL

AND SINGLE P OWER

ENTRY WIRES

74 1/8"

(1882.8)

2 3/4"
(69.8)

SUP PLY

OPEN

DDiimmeennssiioonnaall DDaattaa

Figure 12. 10.4, 13, 12.5, 15 ton air handler, dual circuit

18

SSA-SVX06E-EN

20 15/16"

(531.8)

2 15/16"

(74.6)

4 3/4"

(120.6)

83 1/8"

(2111.4)

3"

(76.2)

20 15/16"

(531.8)

20" (508)

12 13/16"

(325. 4)

25 1/2"

(647.7)

21 13/16"

(554)

21 3/8"

(542. 9)

19 1/8"

(485. 8)

18 3/8"

(466.7)

15 7/8"

(403. 2)

12 7/8"

(327)

25 1/2"

(647.7)

11 7/16"

(290.5)

50 13/16"

(1290.6)

9 5/8"

(244.5)

71 7/8"

(1825.6)

1 11/16"

(42.9)

89 3/16"

(2265.4)

92 9/16"

(2351.1)

4" (101.6)

3 3/8" (85.7)

1 15/16" (49.2)

1 11/16" (42.9)

3 7/8" (98.4)

3 1/4" (82.5)

1 7/8" (47.6)

1 9/16" (39.7)

28 1/2"

(724)

1 3/16"

(30.2)

31 1/8"

(790.6)

4 1/4" (108)

16 5/16"

(414.3)

31 1/8"

(790.6)

4 15/16" (125.4)

92 9/16"

(2351.1)

18 5/8"

(473.1)

6 7/16" (163.5)

18 7/8"

(479.4)

54 15/16"

(1395.4)

BOTTOM RETURN

SIDE RETURN

CONTROL BOX

ACCESS PANEL

NOTES :

1. P ANEL DEPTH 1/2" (12.7) (TYP. ALL PANELS).

2. REMOVABLE DRAIN PAN AND ATTACHED DRAIN CONNECTION MAY BE INSTALLED ON END
OF UNIT IN EITHER THE VERTICAL OR HORIZONTAL CONFIGURATION, PLASTIC DRAIN PAN
ACCESS PLATE ON THE END OF UNIT OPPOSITE DRAIN CONNECTION MUST BE REMOVED TO
S LIDE DRAIN PAN OUT OF UNIT CLEANING. ACCESS PLATE MUST BE RE-INSTALLED AFTER
S LIDING DRAIN PAN BACK INTO UNIT.

3. IF PERIODIC DRAIN PAN CLEANING IS REQUIRED, ALLOW ROOM FOR PARTIAL REMOVAL OF
DRAIN PAN CONNECTION AT END OF UNIT.

4. 1" (25.4) FEMALE SCHED .40 (10.2) PVC PIPE DRAIN CONNECTION VERTICAL CONFIGURATION.

5. 1" (25.4) FEMALE SCHED .40 (10.2) PVC PIPE DRAIN CONNECTION HORIZONTAL CONFIGURATION.

SEE NOTES
2,3,4

SEE NOTES 2,3,4

(4) - HOLE FOR HORIZONTAL
SUS PENSION

COP PER LIQUID LINE

FIELD CONNECTION

COP PER SUCTION LINE
FIELD CONNECTION

SUCTION LINE

REMOTE BULB TXV

FILTER ACCESS PANEL
22" (559) MIN. DISTANCE
BOTH S IDE

DRAIN CONNECTION

FOR HORIZONTAL

(SEE NOTE 2,3,5)

SIDE RETURN

BOTTOM RETURN

LIQUID LINES

(4) HOLE FOR
HORIZONTAL
SUS PENSION

SUP PLY HORIZONTAL -
RETURN VERTICAL /
RETURN HORIZONTAL

SUPPLY VERTICAL -
RETURN HORIZONTAL /
RETURN VERTICAL

BOTTOM RETURN

SIDE RETURN

FILTER

SUP PLY OPENING

BOTTOM RETURN

SIDE RETURN

CONTROL WIRING

LINE VOLTAGE

DUCT FLANGE
1" (25.4)

HEIGHT

SUP PLY
OPEN

HEATER CONTROL
AND SINGLE P OWER
ENTRY WIRES

21 13/16"

(554)

19 1/8"
(485.8)

18 3/8"
(466.7)

15 7/8"

(403.2)

83 1/8"

(2111.4)

4 3/4"

(120.6)

Figure 13. 16.7, 20.9, 20, 25 ton air handler, dual circuit

DDiimmeennssiioonnaall DDaattaa

SSA-SVX06E-EN

19

Weights

T

op View

Control Box Access

Air Handler

Table 1. Standard air handler (TWE) — unit and corner weights - (60 Hz)

Tons

7.5

12.5 TWE150E 730 676 168 192 181 135 196 164 145 171

Model

Number

TWE061D/E

5

TWE090D/E

TWE120D/E

10

15 TWE180E 729 675 167 192 181 135 196 163 145 171

20 TWE240E 891 818 258 168 161 231 256 181 146 235

25 TWE300E 972 899 211 229 184 275 272 176 228 223

Shipping

Max (lbs)

263 232 55 71 51 55 54 67 50 61

360 323 67 99 75 82 56 92 87 88

429 393 77 121 110 85 79 118 77 119

Net Max

(lbs)

Table 2. SZVAV and 2-Speed VFD air handler (TWE) — unit and corner weights - (60 Hz)

Tons

7.5 TWE090E 360 323 67 99 75 82 56 92 87 88

12.5 TWE150E 730 676 168 192 181 135 196 164 145 171

Model

Number

TWE120D/E

10

15 TWE180E 729 675 167 192 181 135 196 163 145 171

20 TWE240E 891 818 258 168 161 231 256 181 146 235

25 TWE300E 972 899 211 229 184 275 272 176 228 223

Shipping

Max (lbs)

429 393 77 121 110 85 79 118 77 119

Net Max

(lbs)

Corner Weights - Vertical Corner Weights - Horizontal

1 2 3 4 1 2 3 4

Corner Weights - Vertical Corner Weights - Horizontal

1 2 3 4 1 2 3 4

Table 3. Standard air handler (TWE) — unit and corner weights - (50 Hz)

Tons

4.6 TWE051D 263 232 55 71 51 55 54 67 50 61

6.25

8.33

10.4 TWE126E 730 676 168 192 181 135 196 164 145 171

16.7 TWE201E 891 818 258 168 161 231 256 181 146 235

20.9 TWE251E 972 899 211 229 184 275 272 176 228 223

Model

Number

TWE076D/E

TWE101D/E

13 TWE156E 729 675 167 192 181 135 196 163 145 171

Shipping

Max (lbs)

360 323 67 99 75 82 56 92 87 88

429 393 77 121 110 85 79 118 77 119

Net Max

(lbs)

Corner Weights - Vertical Corner Weights - Horizontal

1 2 3 4 1 2 3 4

Figure 14. Vertical — TWE051, 076, 101, 061, 090, 120

20

SSA-SVX06E-EN

Figure 15. Vertical — TWE126, 156, 201, 251, 150, 180, 240, 300

op View

Control Box Access

Top View

Control Box
Access

Top View

Control Box
Access

Figure 16. Horizontal — TWE051, 076, 101, 061, 090, 120

WWeeiigghhttss

Figure 17. Horizontal — TWE126, 156, 201, 251, 150, 180, 240, 300

SSA-SVX06E-EN

21

Installation

Horizontal Suspension

If the air handler will be suspended, use a suspension
mounting kit to isolate the unit from the structure. This
is usually accomplished with spring or rubber isolators,
which are offered as an accessory.

Mounting rods must be field supplied. Isolator
selection is dependent upon total unit weight including
accessories — see “Weights,” p. 20 for approximate
unit weights.

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

BBeeffoorree hhaannggiinngg tthhee uunniitt oonn ssuussppeennssiioonn rrooddss,,
rreeiinnffoorrccee tthhee ccaabbiinneett aarroouunndd tthhee ssuussppeennssiioonn hhoolleess
bbyy uussiinngg aa llaarrggee wwaasshheerr iinnssiiddee tthhee ccaabbiinneett..
WWaasshheerrss sshhoouulldd bbee bbeettwweeeenn tthhee sskkiinn ooff tthhee aaiirr
hhaannddlleerr aanndd tthhee nnuutt oonn tthhee ssuussppeennssiioonn rroodd..

Align holes in the cabinet with structural supports and
secure suspension rods to the structure, then to the air
handler cabinet. If hole locations do not permit proper
alignment with existing structure, it may be necessary
to field fabricate cross members on existing structural
beams.

NNoottee:: When other than bottom return is to be used,

side panel removal for return duct installation
must be secured over the bottom opening.

Leveling

This air handler has a double sloped drain pan. In order
to assure proper drainage along the length of the drain
pan, it is important to have the unit properly leveled. Be
sure the air handler is level.

Auxiliary Drain Pan

A field fabricated, auxiliary drain pan should be
installed under the unit for all horizontal applications
and when air handlers are installed above ceilings or in
other locations where condensate overflow may cause
damage.

This drain pan will eliminate any excess condensation
that may be due to extreme humidity or an obstructed
drain in the primary drain pan. Drain lines from this
pan must be installed, but should not be connected to
the primary drain line from the unit. Isolate the
auxiliary drain pan from both the air handler and the
structure.

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

EEnnssuurree tthhaatt tthhee rreeffrriiggeerraanntt lliinneess ppaassssiinngg tthhrroouugghh
tthhee ccaabbiinneett aarree nnoott rreessttiinngg oonn sshhaarrpp sshheeeett mmeettaall
eeddggeess aanndd tthhaatt tthhee bbuullbb((ss)) aarree aattttaacchheedd ttoo tthhee
ssuuccttiioonn lliinnee ooff tthhee ssaammee cciirrccuuiitt..

1. Locate cloth bag(s) attached to the refrigerant tube
of the coil that contains a stainless steel clamp and
insulation material (approximately 9” long by 4”
wide) for each refrigerant circuit. This is for
attaching and insulating the expansion valve bulb(s)
to the suction line(s).

2. Attach the expansion valve bulb(s)

oonn aaiirr hhaannddlleerrss tthhaatt wwiillll hhaavvee rreeffrriiggeerraanntt lliinneess
eenntteerriinngg tthhee ccaabbiinneett ffrroomm tthhee lleefftt ssiiddee::

a. Remove the split rubber grommet from the

knockout in the end of the air handler. Uncoil the
cap tube with the bulb attached at the expansion
valve and place the grommet on the cap tube.

b. With the grommet around the tube, push the

bulb through the hole and position the grommet
back into its original position (one bulb and cap
tube on single circuit units, and two bulbs and
cap tubes on dual circuit units).

oonn aaiirr hhaannddlleerrss tthhaatt wwiillll hhaavvee rreeffrriiggeerraanntt lliinneess
eenntteerriinngg tthhee ccaabbiinneett ffrroomm tthhee rriigghhtt ssiiddee::

a. Attach the bulb(s) to the suction tube(s) inside

the cabinet, approximately 10” from the right
end of the unit.

3. Attach the bulb(s) on a horizontal section of tube
where the entire length of the bulb is in contact with
the tube (see Figure 18, p. 23), approximately 45
degrees off vertical (a 10 or 2 o’clock position).

4. After attaching to the suction line(s), either inside or
outside of the cabinet, wrap the insulation around
the bulb(s) and suction tube(s).

NNoottee:: Suction piping should be insulated.

Refrigerant Piping

Installation, brazing, leak testing and evacuation of
refrigerant lines are covered in the installation
instructions that shipped with the outdoor unit. Read
the instructions before beginning installation of
refrigerant lines.

22

SSA-SVX06E-EN

Between

10 and 2 O’Clock

Bulb
Retaining
Clip

Insulating

Tape

V

ENT

DRAIN

CLEAN
OUT

Materials
2 each - TEE
2 each - 90° ELL
1 each - PLUG
2 each - 6” NIPPLE
2 each - 2” NIPPLE
1 each - 1” NPT to PVC or
COPPER ADAPTER

IInnssttaallllaattiioonn

WWAARRNNIINNGG

FFiibbeerrggllaassss WWooooll!!

YYoouu MMUUSSTTwweeaarr aallll nneecceessssaarryy PPeerrssoonnaall PPrrootteeccttiivvee
EEqquuiippmmeenntt ((PPPPEE)) iinncclluuddiinngg gglloovveess,, eeyyee pprrootteeccttiioonn,,
aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr,, lloonngg
sslleeeevveess aanndd ppaannttss wwhheenn wwoorrkkiinngg wwiitthh pprroodduuccttss
ccoonnttaaiinniinngg ffiibbeerrggllaassss wwooooll..

PPrreeccaauuttiioonnaarryy MMeeaassuurreess::

•• AAvvooiidd bbrreeaatthhiinngg ffiibbeerrggllaassss dduusstt..

•• UUssee aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr..

•• AAvvooiidd ccoonnttaacctt wwiitthh tthhee sskkiinn oorr eeyyeess.. WWeeaarr
lloonngg--sslleeeevveedd,, lloooossee--ffiittttiinngg ccllootthhiinngg,, gglloovveess,,
aanndd eeyyee pprrootteeccttiioonn..

•• WWaasshh ccllootthheess sseeppaarraatteellyy ffrroomm ootthheerr ccllootthhiinngg;;
rriinnssee wwaasshheerr tthhoorroouugghhllyy..

•• OOppeerraattiioonnss ssuucchh aass ssaawwiinngg,, bblloowwiinngg,, tteeaarr-­oouutt,, aanndd sspprraayyiinngg mmaayy ggeenneerraattee ffiibbeerr
ccoonncceennttrraattiioonnss rreeqquuiirriinngg aaddddiittiioonnaall
rreessppiirraattoorryy pprrootteeccttiioonn.. UUssee tthhee aapppprroopprriiaattee
NNIIOOSSHH aapppprroovveedd rreessppiirraattoorr..

FFiirrsstt AAiidd MMeeaassuurreess::

•• EEyyee CCoonnttaacctt -- FFlluusshh eeyyeess wwiitthh wwaatteerr ttoo
rreemmoovvee dduusstt.. IIff ssyymmppttoommss ppeerrssiisstt,, sseeeekk
mmeeddiiccaall aatttteennttiioonn..

•• SSkkiinn CCoonnttaacctt -- WWaasshh aaffffeecctteedd aarreeaass ggeennttllyy
wwiitthh ssooaapp aanndd wwaarrmm wwaatteerr aafftteerr hhaannddlliinngg..

Figure 18. Remote bulb installation

NNoottee:: When air handler is installed in the vertical

position and close proximity trapping of
condensate is required, use of a subbase
accessory to raise the air handler for clearance of
the drain trap is recommended. See Figure 19, p.

23 for a typical drain trap assembly.

Figure 19. Typical drain trap assembly

Filter Replacement

WWAARRNNIINNGG

FFiibbeerrggllaassss WWooooll!!

YYoouu MMUUSSTT wweeaarr aallll nneecceessssaarryy PPeerrssoonnaall PPrrootteeccttiivvee
EEqquuiippmmeenntt ((PPPPEE)) iinncclluuddiinngg gglloovveess,, eeyyee pprrootteeccttiioonn,,
aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr,, lloonngg
sslleeeevveess aanndd ppaannttss wwhheenn wwoorrkkiinngg wwiitthh pprroodduuccttss
ccoonnttaaiinniinngg ffiibbeerrggllaassss wwooooll..

PPrreeccaauuttiioonnaarryy MMeeaassuurreess::

•• AAvvooiidd bbrreeaatthhiinngg ffiibbeerrggllaassss dduusstt..

•• UUssee aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr..

•• AAvvooiidd ccoonnttaacctt wwiitthh tthhee sskkiinn oorr eeyyeess.. WWeeaarr
lloonngg--sslleeeevveedd,, lloooossee--ffiittttiinngg ccllootthhiinngg,, gglloovveess,,
aanndd eeyyee pprrootteeccttiioonn..

•• WWaasshh ccllootthheess sseeppaarraatteellyy ffrroomm ootthheerr ccllootthhiinngg;;
rriinnssee wwaasshheerr tthhoorroouugghhllyy..

•• OOppeerraattiioonnss ssuucchh aass ssaawwiinngg,, bblloowwiinngg,, tteeaarr-­oouutt,, aanndd sspprraayyiinngg mmaayy ggeenneerraattee ffiibbeerr
ccoonncceennttrraattiioonnss rreeqquuiirriinngg aaddddiittiioonnaall
rreessppiirraattoorryy pprrootteeccttiioonn.. UUssee tthhee aapppprroopprriiaattee
NNIIOOSSHH aapppprroovveedd rreessppiirraattoorr..

Condensate Piping

The drain pan condensate connection is a female slip
joint type for 1” Schedule 40 PVC pipe. Use PVC cement
and tubing as required (field supplied) to construct a
trap. A union or flexible tubing and clamps may be
installed if the drain pan is to be removed periodically
for cleaning.

SSA-SVX06E-EN

FFiirrsstt AAiidd MMeeaassuurreess::

•• EEyyee CCoonnttaacctt -- FFlluusshh eeyyeess wwiitthh wwaatteerr ttoo
rreemmoovvee dduusstt.. IIff ssyymmppttoommss ppeerrssiisstt,, sseeeekk
mmeeddiiccaall aatttteennttiioonn..

•• SSkkiinn CCoonnttaacctt -- WWaasshh aaffffeecctteedd aarreeaass ggeennttllyy
wwiitthh ssooaapp aanndd wwaarrmm wwaatteerr aafftteerr hhaannddlliinngg..

Air handlers are shipped with throwaway filters
installed. For replacement filters consult the air handler
service facts for correct size and number.

23

Filter
Frame

IInnssttaallllaattiioonn

To replace filters from the end of the unit, remove lower
access panel (either end) and slide old filters out and
replace with new ones.

To replace from the front of the unit, remove one “L”
shaped angle. Remove and replace filters and reinstall
“L” shaped angle. See Figure 20, p. 24.

To convert from 1” filter to a 2” filter on units so
equipped, remove lower access panels from both ends
of the air handler. Remove screws and rotate the “L”
shaped angles from both the top and bottom of the
filter track 180° to increase the width of the filter
opening.

Figure 20. Filter location

SZVAV Units

For SZVAV units, air flow is set by using potentiometer
R-136 on the ReliaTel options module found in the air
handler control box, see Figure 21, p. 24. The
potentiometer will adjust the maximum air flow
between the range of 60 Hz to 44.50 Hz. If the desired
maximum operating point from the catalog fan table is
lower than 44.50 Hz, parameter 6-15 on the VFD must
be reprogrammed to 50 Hz. The VFD is preset from the
factory to a default of 25 Hz for the lower limit and does
not need to be reprogrammed.

Figure 21. ReliaTel options module

Duct Connections

The supply and return ducts should be connected to
the unit with flame retardant duct connectors to reduce
vibration transmission. The return duct should be sized
to the same dimensions as the return inlet of the unit.

IImmppoorrttaanntt:: Duct flanges are provided for attachment of

the duct work and are packaged on the
outside of the cabinet for TWE150, 180, 240,
300 and TWE126, 156, 201, 251. The duct
flanges are fastened to the pallet below the
coil (bottom return) on the TWE051, 061,
076, 090, 101 and 120 models.

Air Flow Settings

Standard Units

Unit is shipped for nominal airflow with nominal static
pressure. Please refer to the fan performance table in
either the product catalog or unit service facts and
select the proper drive package for each application.
Failure to do so could result in improper airflow
causing coil frosting or condensate management
problems. Condensate management problems such as
water blow off could be the result of too great of air
face velocity across the coil. To ensure proper
operation refer to “Fan Belt Adjustment,” p. 44.

Measure the voltage between TP1 on the RTOM and
ground. Use Table 4, p. 24 to set the desired maximum
operating supply fan speed.

Table 4. SZVAV air handler speed to voltage

Parameter 6-15 Set to 60 Hz

TP1

High Speed

(Hz)

38.00 <0.10 44.00 1.65

38.40 0.20 44.40 1.70

38.80 0.30 44.80 1.75

39.20 0.45 45.20 1.83

39.60 0.55 45.60 1.90

40.00 0.70 46.00 1.95

40.40 0.80 46.40 2.00

40.80 0.95 46.80 2.05

41.20 1.05 47.20 2.10

41.60 1.15 47.60 2.13

42.00 1.25 48.00 2.17

42.40 1.30 48.40 2.21

(RTOM)
Voltage

(Vdc)

High Speed

(Hz)

TP1
(RTOM)
Voltage

(Vdc)

24

SSA-SVX06E-EN

IInnssttaallllaattiioonn

Table 4. SZVAV air handler speed to voltage
(continued)

Parameter 6-15 Set to 60 Hz

TP1

High Speed

(Hz)

42.80 1.35 48.80 2.27

43.20 1.45 49.20 2.30

43.60 1.55 49.60 2.35

— — 50.00 >2.40

44.50 <0.10 52.25 1.65

45.02 0.20 52.77 1.70

45.53 0.30 53.28 1.75

46.05 0.45 53.80 1.83

46.57 0.55 54.32 1.90

47.08 0.70 54.83 1.95

47.60 0.80 55.35 2.00

48.12 0.95 55.87 2.05

48.63 1.05 56.38 2.10

49.15 1.15 56.90 2.13

49.67 1.25 57.42 2.17

50.18 1.30 57.93 2.21

50.70 1.35 58.45 2.27

51.22 1.45 58.97 2.30

51.73 1.55 59.48 2.35

— — 60.00 >2.40

(RTOM)
Voltage

(Vdc)

High Speed

(Hz)

TP1
(RTOM)
Voltage

(Vdc)

2-Speed VFD Units

To configure units with an RTOM for 2-speed operation
move plug PPM 10 from PPF 10 to TP. Refer to “Heating

and Cooling Setpoint Arbitration,” p. 27 for setpoint

connection. Complete the configuration by
reprogramming VFD parameter 6-10 to 5.00 V and
parameter 6-11 to 7.60 V. For 2-Speed VFD controlled
units the desired maximum air flow (High Speed) is set
by reprogramming parameter 6-15 on the VFD to the
frequency value that best meets the RPM requirement
as shown in the catalog fan tables.

The minimum air flow (Low Speed) is set by
reprogramming parameter 6-14 on the VFD. Refer to

Table 5, p. 25 to see the allowed Low Speed range for a

given High Speed. Use the Menu button and up and
down arrows on the keypad to access the parameters.

Table 5. 2-Speed VFD programming speeds

High

Speed

(Hz)

60.00 25.00 - 39.60 48.00 25 - 31.68

59.00 25.00 - 38.94 47.00 25 - 31.02

58.00 25.00 - 38.28 46.00 25 - 30.36

57.00 25.00 - 37.62 45.00 25 - 29.70

56.00 25.00 - 36.96 44.00 25 - 29.04

55.00 25.00 - 36.30 43.00 25 - 28.38

54.00 25.00 - 35.64 42.00 25 - 27.72

53.00 25.00 - 34.98 41.00 25 - 27.06

52.00 25.00 - 34.32 40.00 25 - 26.40

51.00 25.00 - 33.66 39.00 25 - 25.74

50.00 25.00 - 33.00 38.00 25 - 25.08

49.00 25.00 - 32.34 — —

Low Speed

(Hz)

Ranges

High Speed

(Hz)

Low Speed

(Hz)

Ranges

Minimum Supply Fan Output

Refer to Table 6, p. 25 for details on minimum supply
fan output signals associated with each unit function.
Note that each value represents the actual Fan Output
% based on 100% being the customers selected
maximum operating speed.

Table 6. Minimum supply fan speeds for SZVAV units

VFD Parameter 6-15 Set to 60 Hz

Minimum

Function

Ventilation Only

Cool 1 (C1 or C2)

Cool 2 (C1 + C2 Energized)

CV Staged Heat

VFD Parameter 6-15 Set to 50 Hz

Function

Ventilation Only

Cool 1 (C1 or C2)

Cool 2 (C1 + C2 Energized)

CV Staged Heat

Table 7. Minimum supply fan speeds for 2-Speed units

Fan Output %

58%

58%

80%

100%

Minimum

Fan Output %

64%

64%

83%

100%

SSA-SVX06E-EN

Function

Ventilation Only

Cool 1 (C1)

Fan Output %

42 - 66%

42 - 66%

(a)

(a)

25

Heater Control
Single Point Power

Line Voltage Entrance

Control Wiring

IInnssttaallllaattiioonn

Table 7. Minimum supply fan speeds for 2-Speed units
(continued)

Function

Cool 2 (C1 + C2 Energized)

CV Staged Heat

(a)

Fan Output percentage is based on the customer chosen upper and
lower speed settings.

Fan Output %

100%

100%

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 warranty.

Electrical Connections

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!

DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss aanndd ddiisscchhaarrggee aallll mmoottoorr ssttaarrtt//rruunn
ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr lloocckkoouutt//
ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbee
iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. FFoorr vvaarriiaabbllee ffrreeqquueennccyy
ddrriivveess oorr ootthheerr eenneerrggyy ssttoorriinngg ccoommppoonneennttss
pprroovviiddeedd bbyy TTrraannee oorr ootthheerrss,, rreeffeerr ttoo tthhee
aapppprroopprriiaattee mmaannuuffaaccttuurreerr’’ss lliitteerraattuurree ffoorr
aalllloowwaabbllee wwaaiittiinngg ppeerriiooddss ffoorr ddiisscchhaarrggee ooff
ccaappaacciittoorrss.. VVeerriiffyy wwiitthh aann aapppprroopprriiaattee vvoollttmmeetteerr
tthhaatt aallll ccaappaacciittoorrss hhaavvee ddiisscchhaarrggeedd..

FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee ssaaffee
ddiisscchhaarrggee ooff ccaappaacciittoorrss,, sseeee PPRROODD--SSVVBB0066AA--EENN..

3. Ensure all connections are tight and no wires
exposed.

4. All accessories must be installed and wired
according to the instructions packaged with that
accessory.

For air handler power entry only, or for dual power
entry (power entry for air handler and power entry
for electric heats), the electrical connections are
made in the fan control box located in the right side
of the air handler and electric heater respectively.
Wiring entrance is through holes provided in the
end of the air handler cabinet, Figure 22, p. 26.
Breaker or fuse size can be selected using the
nameplates attached to the unit and electric heater.

Figure 22. Electrical entries

WWAARRNNIINNGG

PPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinngg
RReeqquuiirreedd!!

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..

1. All electrical lines, sizing, protection, and grounding
must be in accordance with the National Electric
Code and local codes.

2. Isolate conduit whenever vibration transmission

26

may cause a noise problem within the building
structure.

Table 8. Recommended thermostat wire size

Wire Size

(Gauge) Physical distance between Unit & T’stat

22 30 Feet

20 50 Feet

18 75 Feet

16 125 Feet

14 200 Feet

Maximum Wire Length

Setpoints

SSA-SVX06E-EN

IInnssttaallllaattiioonn

EDC Switch Wiring

EElleeccttrroommeecchhaanniiccaall UUnniittss: To enable the Evaporator
Defrost Control Switch remove the "W3" jumper
between LTB1-B1 and LTB1-B2 at the Outdoor
Condenser Section.

RReelliiaaTTeell UUnniittss: To enable the Evaporator Defrost
Control Switch move wire "W11" from LTB2-B2 to LTB2­R, and move wire "W12" from LTB2-B1 to LTB2-CD at
the Indoor Air Handler Section.

NNoottee:: Refer to wiring schematics for more detail.

Heating and Cooling Setpoint Arbitration

Figure 23. Discharge air cooling setpoint

Single Zone VAV units will require traditional Zone
Heating (if Heat installed) and Cooling Setpoints that
are used on constant volume units in addition to two
new setpoints: Discharge Air Cool (Externally Mounted
Potentiometer in Control Box) and Discharge Air Heat
(DA Heat R-42) Setpoint limits. The Zone Heating and
Cooling Setpoints will be selectable via the existing
RTRM customer connections for a Zone Sensor panel
and the DA Heat and Cool Setpoints will be customer
selectable via an onboard potentiometer on the RTOM,
and an off board potentiometer mounted inside the
control box with ranges 50-150°F and 40-90°F
respectively.

The setpoint tables should be used as a reference when
setting the DA Heat (R–42) and Discharge Air Cool
(Control Box Mounted Potentiometer) setpoints. Note
that the recommended settings for these setpoints are
100°F for the DA Heat Setpoint, and 50°F for the DA
Cool Setpoint.

Table 9. DA heat setpoint

Voltage

(Vdc)

0.00 50 0.98 75 1.61 100 2.06 125

0.09 51 1.00 76 1.63 101 2.08 126

0.13 52 1.03 77 1.66 102 2.09 127

0.16 53 1.06 78 1.69 103 2.11 128

0.20 54 1.08 79 1.71 104 2.12 129

0.24 55 1.11 80 1.72 105 2.13 130

0.28 56 1.13 81 1.74 106 2.13 131

0.31 57 1.16 82 1.76 107 2.14 132

0.35 58 1.18 83 1.78 108 2.16 133

0.39 59 1.21 84 1.79 109 2.17 134

0.42 60 1.23 85 1.81 110 2.19 135

0.46 61 1.26 86 1.83 111 2.20 136

0.50 62 1.28 87 1.84 112 2.21 137

0.53 63 1.31 88 1.86 113 2.23 138

0.57 64 1.33 89 1.88 114 2.24 139

0.61 65 1.36 90 1.89 115 2.25 140

Setpoint

(ºF)

Voltage

(Vdc)

Setpoint

(ºF)

Voltage

(Vdc)

Setpoint

(ºF)

Voltage

(Vdc)

Setpoint

(ºF)

SSA-SVX06E-EN

27

IInnssttaallllaattiioonn

Table 9. DA heat setpoint (continued)

Voltage

(Vdc)

0.65 66 1.38 91 1.91 116 2.26 141

0.68 67 1.41 92 1.93 117 2.28 142

0.72 68 1.43 93 1.95 118 2.29 143

0.76 69 1.46 94 1.96 119 2.30 144

0.79 70 1.48 95 1.98 120 2.32 145

0.83 71 1.51 96 2.00 121 2.33 146

0.87 72 1.53 97 2.01 122 2.34 147

0.90 73 1.56 98 2.03 123 2.36 148

0.94 74 1.58 99 2.05 124 2.37 149

— — — — — — 2.40 150

Setpoint

(ºF)

Voltage

(Vdc)

Setpoint

(ºF)

Voltage

(Vdc)

Setpoint

(ºF)

Voltage

(Vdc)

Setpoint

(ºF)

Table 10. DA cool setpoint (mounted above keyboard)

Setpoint (°F) Voltage (Vdc) Setpoint (°F) Voltage (Vdc) Setpoint (°F) Voltage (Vdc)

40 <0.10 51 1.30 61 2.00

41 0.20 52 1.35 62 2.05

42 0.30 53 1.45 63 2.10

43 0.45 54 1.55 64 2.13

44 0.55 55 1.65 65 2.17

45 0.70 56 1.70 66 2.21

46 0.80 57 1.75 67 2.27

47 0.95 58 1.83 68 2.30

48 1.05 59 1.90 69 2.35

49 1.15 60 1.95 70 >2.40

50 1.25

Note: The potentiometer voltage readings can be verified via the provided test points located next to each potentiometer. Use a DC voltmeter to the Vdc
reading between those points and common.

Checkout Procedure

Complete the “Installation Checklist,” p. 28 once
installation of field wiring connections is complete. All
operational checks (unit running) must be made after
the outdoor unit is installed and system
interconnection is complete.

Installation Checklist

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee!!

DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

Complete this checklist once the unit is installed to

28

verify that all recommended procedures have been
accomplished before the system is started. Operational
checks cannot be performed until the outdoor unit is
installed and system interconnection is complete.

Verify that the unit electrical power is disconnected.

Inspect all field wiring connections. All connections
should be clean and tight.

Inspect unit ground connection(s). Ground must
comply with all applicable codes.

Inspect unit suspension arrangement (if used). Unit
position must be secure. Remove any tools or
debris found in or near the unit.

Inspect duct outlets. Outlets must be open and
unrestricted.

Inspect unit drain lines. Pipe connections must be
tight and drain line unrestricted.

SSA-SVX06E-EN

RTRMJ-4

RTOMJ-1

FieldInstalled Wires

T’stat

Air Handler

Disconnect S witch

(By Others)

Disconnect S witch

(By Others) Note 2

Electric

Heat Accessory

Disconnect S witch

(By Others)

B

A

B

D

C

IInnssttaallllaattiioonn

Inspect fan assembly to insure all moving parts

move freely.

If unit is horizontally mounted, make sure

secondary drain pan has been installed.

Inspect unit for proper filters, securely installed and

not touching the coil surface. All cabinet panels
must be secure.

Instruct owner/operator on proper system

operating and maintenance procedure.

Thermostat and Control Connections

Wiring shown with dashed lines is to be furnished and
installed by the customer. All customer-supplied wiring
must be copper only and must conform to NEC and
local electrical codes. Codes may require line of sight
between disconnect switch and unit.

1. Observe all notes on the wiring diagrams.

2. Mount the thermostat or zone sensor in the desired

location.

3. Install color coded low voltage cables between

outdoor unit, indoor unit and thermostat. For
SZVAV units, install low voltage and
communication wires between the RTRM in the
condenser and the RTOM in the air handler. See
schematic and connection print for more detail.

4. Connect low voltage control wiring to the low

voltage terminal board located at the control box
per the typical interconnecting wiring diagrams. For
SZVAV units, connect the ReliaTel harness (supplied
with the air handler), between the RTRM and RTOM.
See Figure 24, p. 29.

Figure 24. RTOM to RTRM harness

Figure 25. Electromechanical jobsite connections

A.

3 power wires, line voltage for 3 phase, (2 power wires for
single phase)

B.

3 power wires, line voltage for 3 phase, (2 power wires for
single phase)

C.

Cooling only thermostat: 3 to 7 wires depending on stages of
electric heat

D.

3 to 7 wires depending on type of outdoor unit(s)

ReliaTel Controls

Wiring shown with dashed lines is to be furnished and
installed by the customer. All customer supplied wiring
must be copper only and must conform to NEC and
local electrical codes. Codes may require line of sight
between disconnect switch and unit.

NNootteess::

1. When electric heater accessory is used,
single point power entry or dual point power
entry is field optional. Single point power
entry option is through electric heater only.

2. ***Choose only one of the following;
Thermostat, Zone Sensor, or NSB Panel.

Electromechanical Controls

Wiring shown with dashed lines is to be furnished and
installed by the customer. All customer supplied wiring
must be copper only and must conform to NEC and
local electrical codes. Codes may require line of sight
between disconnect switch and unit.

NNoottee:: When electric heater accessory is used, single

point power entry or dual point power entry is
field optional. Single point power entry option is
through electric heater only.

SSA-SVX06E-EN

29

NSB P anel

Zone

Sensor

T’stat

Air Handler

Disconnect S witch

(By Others)

Disconnect S witch

(By Others) Note 2

Electric

Heat Accessory

Disconnect S witch

(By Others)

Note 2

B

A

B

D

F

EC

IInnssttaallllaattiioonn

Figure 26. ReliaTel jobsite connections

A.

3 power wires, line voltage for 3 phase, (2 power wires for
single phase)

B.

3 power wires, line voltage for 3 phase, (2 power wires for
single phase)

C.

Cooling only thermostat: 3 to 7 wires depending on stages of
electric heat

C.

Heat Pump thermostat: 5 to 8 wires depending on stages of
electric heat

D.

3 to 7 wires depending on type of outdoor unit(s)

E. Zone Sensor: 4 to 10 wires depending on zone sensor model

F.

Night Setback Panel: 7 wires

(a)

For SZVAV air handlers: 4 additional wires are required (2 of which
require twisted pair or shielded wire) in order to make connections
between ReliaTel boards in the condenser and air handler.

(a)

30

SSA-SVX06E-EN

Electrical Data

60 Hz Models

Includes Standard, SZVAV and 2–Speed VFD air
handlers.

Table 11. Voltage operating range (all air handlers)

Model Number:

Digit 8

1

3

4

K

W

Electrical

Characteristics

208-230/60/1

208-230/60/3

460/60/3

380/60/3

575/60/3

Table 12. Electrical characteristics — standard and low static motors — 60 Hz standard air handler

Standard Evaporator Fan Motor Low Static Evaporator Fan Motor

No. Volts Phase

1 208 1 0.75 6.0 41.0 7.5 15

1 230 1 0.75 5.9 45.0 7.4 15

1 208 3 0.75 2.5 16.4 3.1 15

1 230 3 0.75 2.4 16.4 3.0 15

1 460 3 0.75 1.2 8.2 1.5 15

1 208 1 1.5 6.8 31.5 8.5 20

1 230 1 1.5 6.2 31.5 7.8 15

1 208 3 1.5 5.3 34.3 6.6 15

1 230 3 1.5 5.0 34.3 6.3 15

1 380 3 1.5 3.0 20.2 3.8 15

1 460 3 1.5 2.5 17.0 3.1 15

1 575 3 1.5 1.8 13.6 2.3 15

1 208 1 2 8.5 57.4 10.6 20

1 230 1 2 7.7 57.4 9.6 20

1 208 3 2 7.0 33.9 7.8 15

1 230 3 2 6.6 33.9 7.3 15

1 380 3 2 3.3 28.0 4.1 15

1 460 3 2 3.3 19.0 3.6 15

1 575 3 2 2.3 15.6 4.0 15

1 460 3 2 2.8 23.0 3.4 15

1 460 3 3 4.6 39.3 5.8 15

Hp

FLA LRA FLA LRA

Tons

Model Number

5

7.5

TWE090DW, EW

10

TWE120D3, E3

TWE120DW, EW

12.5

15

Unit

TWE061D1, E1

TWE061D1, E1

TWE061D3, E3

TWE061D3, E3

TWE061D4, E4

TWE061DW 1 575 3 0.75 1.3 6.1 1.6 15

TWE090D1, E1

TWE090D1, E1

TWE090D3, E3

TWE090D3, E3

TWE090DK, EK

TWE090D3, E3

TWE120D1, E1

TWE120D1, E1

TWE120D3, E3

TWE120D3, E3

TWE120DK, EK

(a)

TWE150E3 1 208 3 2 6.0 23.0 7.4 15

TWE150E3 1 230 3 2 5.5 23.0 6.9 15

TWE150EK 1 380 3 2 3.3 28.0 4.1 15

TWE150E3

TWE150EW 1 575 3 2 2.2 18.0 2.8 15

TWE180E3 1 208 3 3 9.4 74.9 11.8 20

TWE180E3 1 230 3 3 9.2 74.9 11.5 20

TWE180EK 1 380 3 5 8.1 63.5 10.1 15

TWE180E3

TWE180EW 1 575 3 3 3.4 24.6 4.3 15

(a)

(a)

Unit Operating
Voltage Range

Amps

187-253

187-253

414-506

342-418

518-632

MCA MFS No. Volts Phase

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

Hp

Amps

MCA MFS

SSA-SVX06E-EN

31

EElleeccttrriiccaall DDaattaa

Table 12. Electrical characteristics — standard and low static motors — 60 Hz standard air handler (continued)

Tons

20

25

Note: For additional information contact product support.

(a)

Field wired for 460V.

Unit

Model Number

TWE240E3 1 208 3 5 14.0 90.8 17.5 30 1 208 3 3 9.4 74.9 11.8 25

TWE240E3 1 230 3 5 13.6 103.0 17.0 30 1 230 3 3 9.2 74.9 11.5 25

TWE240EK 1 380 3 5 8.1 63.5 10.1 15

TWE240E4 1 460 3 5 6.6 44.8 9.0 15 1 460 3 3 4.6 39.3 5.8 15

TWE240EW 1 575 3 5 5.3 36.2 6.6 15 1 575 3 3 3.4 24.6 4.3 15

TWE300E3 1 208 3 7.5 19.6 150.0 25.0 40 1 208 3 7.5 19.6 150 25 40

TWE300E3 1 230 3 7.5 17.8 150.0 25.0 40 1 230 3 7.5 17.8 150 25 40

TWE300EK 1 380 3 7.5 10.9 72.9 13.6 20

TWE300E4 1 460 3 7.5 8.9 75.0 12.0 20 1 460 3 7.5 8.9 75 12 20

TWE300EW 1 575 3 7.5 7.1 60.0 9.0 15 1 575 3 7.5 7.1 60 9 15

Table 13. Electrical characteristics — high and ultra-high static motors — 60 Hz standard air handler

Tons

5

7.5

10

12.5

15

20

Unit

Model Number

TWE061D1, E1

TWE061D1, E1

TWE061D3, E3

TWE061D3, E3

TWE061D4, E4

TWE061DW 1 575 3 1.5 1.8 13.6 2.3 15

TWE090D1, E1

TWE090D1, E1

TWE090D3, E3

TWE090D3, E3

TWE090D3, E3

TWE090DW, EW

TWE120D1, E1

TWE120D1, E1

TWE120D3, E3

TWE120D3, E3

TWE120D3, E3

TWE120DW, EW

TWE150E3 1 208 3 3 9.4 74.9 11.8 25 1 208 3 5 14 98 17.5 35

TWE150E3 1 230 3 3 9.2 74.9 11.5 25 1 230 3 5 13.6 103 17 35

TWE150E3

TWE150EW 1 575 3 3 3.4 24.6 4.3 15 1 575 3 5 5.2 36.2 6.5 15

TWE180E3 1 208 3 5 14 98 17.5 30

TWE180E3 1 230 3 5 13.6 103 17 30

TWE180E3

TWE180EW 1 575 3 5 5.2 36.2 6.5 15

TWE240E3

TWE240E3

TWE240E4

TWE240EW

(a)

(a)

(a)

(a)

Standard Evaporator Fan Motor Low Static Evaporator Fan Motor

No. Volts Phase

Hp

Amps

FLA LRA FLA LRA

MCA MFS No. Volts Phase

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

Hp

Amps

MCA MFS

High Static Evaporator Fan Motor Ultra-High Static Evaporator Fan Motor

No.

Volts Phase

1 208 1 1.5 6.8 31.5 8.5 20

1 230 1 1.5 6.2 31.5 7.8 15

1 208 3 1.5 5.3 34.3 6.6 15

1 230 3 1.5 5 34.3 6.3 15

1 460 3 1.5 2.5 17 3.1 15

1 208 1 2 8.5 57.4 10.6 20

1 230 1 2 7.7 57.4 9.6 20

1 208 3 2 7 33.9 7.8 15 1 208 3 3 9.4 74.9 11.8 25

1 230 3 2 6.6 33.9 7.3 15 1 230 3 3 9.2 74.9 11.5 25

1 460 3 2 3.3 19 3.6 15 1 460 3 3 4.6 39.3 5.8 15

1 575 3 2 2.3 15.6 4 15 1 575 3 3 3.4 24.6 4.3 15

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

1 208 3 3 9.4 74.9 11.8 25

1 230 3 3 9.2 74.9 11.5 25

1 460 3 3 4.6 39.3 5.8 15

1 575 3 3 3.4 24.6 4.3 15

1 460 3 3 4.6 39.3 5.8 15 1 460 3 5 6.6 44.8 8.3 20

1 460 3 5 6.6 44.8 8.3 15

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

Hp

Amps

FLA LRA FLA LRA

MCA MFS No.

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

1 208 3 7.5 19.6 114 25 45

1 230 3 7.5 17.6 126 22 40

1 460 3 7.5 9 61.4 11.3 25

1 575 3 7.5 7.2 49.8 9 20

Volts Phase

Hp

Amps

MCA MFS

32

SSA-SVX06E-EN

EElleeccttrriiccaall DDaattaa

Table 13. Electrical characteristics — high and ultra-high static motors — 60 Hz standard air handler (continued)

Tons

25

Note: For additional information contact product support.

(a)

Field wired for 460V.

Unit

Model Number

TWE300E3 1 208 3 7.5 19.6 150 25 40

TWE300E3 1 230 3 7.5 17.8 150 25 40

TWE300E4 1 460 3 7.5 8.9 75 12 20

TWE300EW 1 575 3 7.5 7.1 60 9 15

Table 14. Electrical characteristics — standard and oversized motors — 60 Hz SZVAV and 2-Speed VFD air handler

Tons

7.5

10

12.5

15

20

25

Notes:

1. For additional information contact product support.

2. Not available with 380/60 Hz models.

Unit

Model Number

TWE090E4 1 208 3 2 6.2 43.4 8 15 1 208 3 3 9.4 71 12 20

TWE090E3 1 230 3 2 5.8 48 8 15 1 230 3 3 9.2 64 12 20

TWE090E4 1 460 3 2 2.9 24 4 15 1 460 3 3 4.6 35.5 6 15

TWE090E4 1 575 3 2 2.2 20.6 3 15 1 575 3 3 3.7 28.4 5 15

TWE120D3, E3

TWE120D3, E3

TWE120D4, E4

TWE120DW, EW

TWE150E3 1 208 3 2 6.2 43.4 8 15 1 208 3 5 13.4 99.5 17 30

TWE150E3 1 230 3 2 5.8 48 8 15 1 230 3 5 12.6 110 17 30

TWE150E4 1 460 3 2 2.9 24 4 15 1 460 3 5 6.3 55 8 15

TWE150EW 1 575 3 2 2.2 20.6 3 15 1 575 3 5 5.1 44 7 15

TWE180E3 1 208 3 3 9.4 71 12 20 1 208 3 5 13.4 99.5 17 30

TWE180E3 1 230 3 3 9.2 64 12 20 1 230 3 5 12.6 110 17 30

TWE180E4 1 460 3 3 4.6 35.5 6 15 1 460 3 5 6.3 55 8 15

TWE180EW 1 575 3 3 3.7 28.4 5 15 1 575 3 5 5.1 44 7 15

TWE240E3 1 208 3 5 13.4 99.5 17 30 1 208 3 7.5 19.6 113.4 25 45

TWE240E3 1 230 3 5 12.6 110 17 30 1 230 3 7.5 17.6 124 25 45

TWE240E4 1 460 3 5 6.3 55 8 15 1 460 3 7.5 8.8 63 11 15

TWE240EW 1 575 3 5 5.1 44 7 15 1 575 3 7.5 7.1 50.4 9 15

TWE300E3 1 208 3 7.5 19.6 113.4 25 45

TWE300E3 1 230 3 7.5 17.6 124 25 45

TWE300E4 1 460 3 7.5 8.8 63 12 20

TWE300EW 1 575 3 7.5 7.1 50.4 9 15

High Static Evaporator Fan Motor Ultra-High Static Evaporator Fan Motor

No. Volts Phase

Hp

Amps

FLA LRA FLA LRA

MCA MFS No. Volts Phase

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

Hp

Amps

MCA MFS

Standard Evaporator Fan Motor High Static Evaporator Fan Motor

No. Volts Phase

1 208 3 2 6.2 43.4 8 15 1 208 3 3 9.4 71 12 20

1 230 3 2 5.8 48 8 15 1 230 3 3 9.2 64 12 20

1 460 3 2 2.9 24 4 15 1 460 3 3 4.6 35.5 6 15

1 575 3 2 2.2 20.6 3 15 1 575 3 3 3.7 28.4 5 15

Hp

Amps

FLA LRA FLA LRA

MCA MFS No. Volts Phase

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

Hp

Amps

MCA MFS

SSA-SVX06E-EN

33

EElleeccttrriiccaall DDaattaa

Table 15. Unit wiring with electric heat (single point connection) — 5-25 ton standard air handlers — 60 Hz

Tons

Used With

TWE061D1,

5

TWE061E1

TWE061D3,

5

TWE061E3

TWE061D4,

5

TWE061E4

5 TWE061DW

TWE090D1,

7.5
TWE090E1

TWE090D3,

7.5
TWE090E3

TWE090D3,

7.5

TWE090E3

TWE090DW,

7.5

TWE090EW

TWE120D1,

10

TWE120E1

TWE120D3,

10

TWE120E3

Heater Model

Number

BAYHTRL106*

BAYHTRL112*

BAYHTRL117*

BAYHTRL123*

BAYHTRL305*

BAYHTRL310*

BAYHTRL315*

BAYHTRL325*

Heater kW

Rating

4.33/5.76

8.65/11.52

12.98/17.28

17.31/23.04

3.76/5.00

7.48/9.96

11.24/14.96

18.72/24.92

BAYHTRL405* 5.00

BAYHTRL410* 9.96 1 17.0 20.0

BAYHTRL415* 14.96 1 25.0 25.0

Unit Power

Supply

208-230/1/60

208-230/3/60

460/3/60

Control

Stages

Minimum Circuit

Ampacity

1

1

1

2

1

1

1

2

33.5/37.4 35.0/40.0

59.5/67.4 60.0/70.0

85.5/97.4 90.0/100.0

111.5/127.4

16.1/18.0 20.0/20.0

29.0/33.0 30.0/35.0

42.2/48.0 45.0/50.0

68.0/77.9

1 10.0 15.0

BAYHTRL425* 24.92 2 40.0 40.0

BAYHTRLW05* 5.00

BAYHTRLW10* 9.96 1 15.0 15.0

BAYHTRLW15* 14.96 1 21.0 20.0

575/3/60

1 8.0 15.0

BAYHTRLW25* 24.92 2 33.0 35.0

BAYHTRL106*

BAYHTRL112*

BAYHTRL117*

BAYHTRL123*

BAYHTRL129*

BAYHTRL305*

BAYHTRL310*

BAYHTRL315*

BAYHTRL325*

BAYHTRL335*

4.33/5.76

8.65/11.52

12.98/17.28

17.31/23.04

21.63/28.80

3.76/5.00

7.48/9.96

11.24/14.96

18.72/24.92

26.20/34.88

BAYHTRL405* 5.00

208-230/1/60

208-230/3/60

1

1

1

2

2

1

1

1

2

2

1 11.0 15.0

34.5/37.8 40.0/40.0

60.5/67.8

86.5/97.8 90.0/100.0

112.5/127.8

138.6/157.8

19.6/21.3 25.0/25.0

32.5/36.2 35.0/40.0

45.7/51.2 50.0/60.0

71.5/82.0

98.7/112

BAYHTRL410* 9.96 1 19.0 20.0

BAYHTRL415* 14.96 1 26.0 30.0

(c)

460/3/60

BAYHTRL425* 24.92 2 41.0 45.0

BAYHTRL435* 34.88 2 56.0 60.0

BAYHTRLW05* 5.00

1 11.0 15.0

BAYHTRLW10* 9.96 1 17.0 15.0

BAYHTRLW15* 14.96 1 23.0 25.0

575/3/60

BAYHTRLW25* 24.92 2 36.0 35.0

BAYHTRLW35* 34.88 2 48.0 45.0

BAYHTRL106*

BAYHTRL112*

BAYHTRL117*

BAYHTRL123*

BAYHTRL129*

BAYHTRL305*

BAYHTRL310*

BAYHTRL315*

BAYHTRL325*

BAYHTRL335*

4.33/5.76

8.65/11.52

12.98/17.28

17.31/23.04

21.63/28.80

3.76/5.00

7.48/9.96

11.24/14.96

18.72/24.92

26.20/34.88

208-230/1/60

208-230/3/60

1

1

1

2

2

1

1

1

2

2

36.6/39.6 40.0/45.0

62.6/69.6

88.6/99.6 90.0/100.0

114.6/129.6

140.7/159.6

21.0/23.0 25.0/30.0

34.0/38.0 35.0/40.0

47.0/53.0 50.0/60.0

73.0/83.0

98.7/113.0

Maximum Fuse

or HACR Circuit

(a)

(a)

(a)

(a)

(a)

(a)

(b)

(a)

(a)

(a)

(a)

(b)

Breaker Size

125.0/150.0

70.0/80.0

70.0/70.0

125.0/150.0

150.0/175.0

80.0/90.0

100.0/125.0

70.0/70.0

125.0/150.0

150.0/175.0

80.0/90.0

100.0/125.0

34

SSA-SVX06E-EN

EElleeccttrriiccaall DDaattaa

Table 15. Unit wiring with electric heat (single point connection) — 5-25 ton standard air handlers — 60 Hz
(continued)

Tons Used With

TWE120D3

10

TWE120E3

TWE120DW,

10

TWE120EW

12.5 TWE150E3

TWE150E3

12.5

12.5 TWE150EW

15 TWE180E3

TWE180E3

15

15 TWE180EW

20 TWE240E3

20 TWE240E4

20 TWE240EW

Heater Model

Number

BAYHTRL405* 5.00

BAYHTRL410* 9.96 1 20.0 20.0

(c)

,

BAYHTRL415* 14.96 1 27.0 30.0

(c)

BAYHTRL425* 24.92 2 42.0 45.0

BAYHTRL435* 34.88 2 57.0 60.0

BAYHTRLW05* 5.00

BAYHTRLW10* 9.96 1 16.0 15.0

BAYHTRLW15* 14.96 1 22.0 25.0

BAYHTRLW25* 24.92 2 35.0 35.0

BAYHTRLW35* 34.88 2 47.0 45.0

BAYHTRM310A

BAYHTRM320A

BAYHTRM330A

BAYHTRM350A

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 34.0 35.0

(c)

BAYHTRM430* 29.92 2 49.0 50.0

BAYHTRM450* 49.84 2 79.0 80.0

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 27.0 30.0

BAYHTRMW30* 29.92 2 39.0 40.0

BAYHTRMW50* 49.84 2 63.0 70.0

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM410* 10.00

BAYHTRM42* 19.92 1 36.0 40.0

(c)

BAYHTRM430* 29.92 2 51.0 60.0

BAYHTRM450* 49.84 2 81.0 90.0

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 30.0 30.0

BAYHTRMW30* 29.92 2 42.0 45.0

BAYHTRMW50* 49.84 2 67.0 70.0

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 39.0 40.0

BAYHTRM430* 29.92 2 54.0 60.0

BAYHTRM450* 49.84 2 84.0 90.0

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 32.0 35.0

BAYHTRMW30* 29.92 2 45.0 45.0

BAYHTRMW50* 49.84 2 70.0 70.0

Heater kW

Rating

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

Unit Power

Supply

460/3/60

575/3/60

208-230/3/60

460/3/60

575/3/60

208-230/3/60

460/3/60

575/3/60

208-230/3/60

460/3/60

575/3/60

Control

Stages

Minimum Circuit

Ampacity

1 12.0 15.0

1 10.0 15.0

1

1

2

2

1 19.0 20.0

1 15.0 15.0

1

1

2

2

1 21.0 25.0

1 17.0 20.0

1

1

2

2

1 24.0 30.0

1 20.0 25.0

33.5/36.9 35/40

59.3/66.8 60/70

85.5/96.8 90/100

137.3/156.7 150/175

37.8/41.6 45.0/45.0

63.7/71.4 70.0/80.0

89.8/101.5 90.0/110.0

141.6/161.4

44.1/49.0 60.0/60.0

71.0/79.0 80.0/90.0

97.0/109.0 100.0/110.0

149.0/169.0

Maximum Fuse

or HACR Circuit

Breaker Size

(b)

(b)

150.0/175.0

150.0/175.0

SSA-SVX06E-EN

35

EElleeccttrriiccaall DDaattaa

Table 15. Unit wiring with electric heat (single point connection) — 5-25 ton standard air handlers — 60 Hz
(continued)

Tons Used With

25 TWE300E3

25 TWE300E4

25 TWE300EW

Notes:

1. kW ratings are at: 208/240V for 208-230V air handlers; 480V for 460V air handlers; 600V for 575V air handlers. For other than
rated voltage, capacity = (voltage/rated voltage)

2. Any power supply and circuits must be wired and protected in accordance with local codes.

3. Electric heat not available with 380/60 Hz models.

4. The HACR circuit breaker is for U.S.A. installations only.

(a)

Field wire must be rated at least 75°C.

(b)

Field wire must be rated at least 90°C.

(c)

With motor field wired for 460V.

Heater Model

Number

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 42.0 45.0

BAYHTRM430* 29.92 2 57.0 60.0

BAYHTRM450* 49.84 2 87.0 90.0

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 34.0 35.0

BAYHTRMW30* 29.92 2 47.0 50.0

BAYHTRMW50* 49.84 2 72.0 80.0

Heater kW

Rating

7.51/10

14.96/19.92

22.47/29.92

37.44/49.84

Unit Power

Supply

208-230/3/60

460/3/60

575/3/60

2

x rated capacity.

Control

Stages

Minimum Circuit

Ampacity

1

1

2

2

1 27.0 30.0

1 22.0 25.0

51.0/53.0 60.0/90.0

77.0/83.0 85.0/90.0

103.0/113.0 110.0/125.0

155.0/173.0 175.0/175.0

Maximum Fuse

or HACR Circuit

Breaker Size

Table 16. Unit wiring with electric heat (single point connection) — 7.5-25 ton SZVAV and 2-Speed VFD air handlers —

60 Hz

Tons Used With

7.5 TWE090E3*3

7.5 TWE090E4*4

7.5 TWE090EW*3

TWE120D3*3, E3*3

10

Heater Model

Number

BAYHTRL305*

BAYHTRL310*

BAYHTRL315*

BAYHTRL325*

BAYHTRL335*

BAYHTRL305* 5.00

BAYHTRL310* 9.96 1 19 20

BAYHTRL315* 14.96 1 27 30

BAYHTRL325* 24.92 2 42 45

BAYHTRL335* 34.88 2 57 60

BAYHTRLW05* 5.00

BAYHTRLW10* 9.96 1 16 20

BAYHTRLW15* 14.96 1 22 25

BAYHTRLW25* 24.92 2 34 35

BAYHTRLW35* 34.88 2 47 50

BAYHTRL305*

BAYHTRL310*

BAYHTRL315*

BAYHTRL325*

BAYHTRL335*

Heater KW

Rating

3.76/5.00

7.48/9.96

11.24/14.96

18.72/24.92

26.20/34.88

3.76/5.00

7.48/9.96

11.24/14.96

18.72/24.92

26.20/34.88

Unit Power

Supply

208-230/3/60

460/3/60

575/3/60

208-230/3/60

Control

Stages

1

1

1

2

2

1 12 15

1 9 15

1

1

1

2

2

Minimum

Circuit

Ampacity

21/23 25/25

34/38 35/40

47/53 50/60

73/83 80/90

99/113 100/125

21/23 25/25

34/38 35/40

47/53 50/60

73/83 80/90

99/113 100/125

Maximum Fuse or

HACR Circuit
Breaker Size

36

SSA-SVX06E-EN

EElleeccttrriiccaall DDaattaa

Table 16. Unit wiring with electric heat (single point connection) — 7.5-25 ton SZVAV and 2-Speed VFD air handlers —
60 Hz (continued)

Tons Used With

TWE120D3*4, E3*4

10

TWE120D4*3, E4*3

10

TWE120D4*4, E4*4

10

TWE120DW*3, EW*3

10

TWE120DW*4, EW*4

10

12.5 TWE150E3*3

12.5 TWE150E3*4

12.5 TWE150E4*3

12.5 TWE150E4*4

12.5 TWE150EW*3

Heater Model

Number

BAYHTRL305*

BAYHTRL310*

BAYHTRL315*

BAYHTRL325*

BAYHTRL335*

BAYHTRL405* 5.00

BAYHTRL410* 9.96 1 19 20

BAYHTRL415* 14.96 1 27 30

BAYHTRL425* 24.92 2 42 45

BAYHTRL435* 34.88 2 57 60

BAYHTRL405* 5.00

BAYHTRL410* 9.96 1 21 25

BAYHTRL415* 14.96 1 29 30

BAYHTRL425* 24.92 2 44 45

BAYHTRL435* 34.88 2 59 60

BAYHTRLW05* 5.00

BAYHTRLW10* 9.96 1 16 20

BAYHTRLW15* 14.96 1 22 25

BAYHTRLW25* 24.92 2 34 35

BAYHTRLW35* 34.88 2 47 50

BAYHTRLW05* 5.00

BAYHTRLW10* 9.96 1 18 20

BAYHTRLW15* 14.96 1 24 25

BAYHTRLW25* 24.92 2 36 40

BAYHTRLW35* 34.88 2 49 50

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 34 35

BAYHTRM430* 29.92 2 49 50

BAYHTRM450* 49.84 2 79 80

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 38 40

BAYHTRM430* 29.92 2 53 60

BAYHTRM450* 49.84 2 83 90

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 28 30

BAYHTRMW30* 29.92 2 41 45

BAYHTRMW50* 49.84 2 66 70

Heater KW

Rating

3.76/5.00

7.48/9.96

11.24/14.96

18.72/24.92

26.20/34.88

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

Unit Power

Supply

208-230/3/60

460/3/60

460/3/60

575/3/60

575/3/60

208-230/3/60

208-230/3/60

460/3/60

460/3/60

575/3/60

Control

Stages

1

1

1

2

2

1 12 15

1 14 15

1 9 15

1 11 15

1

1

2

2

1

1

2

2

1 19 20

1 23 25

1 16 20

Minimum

Circuit

Ampacity

25/27 30/30

38/42 40/45

38/57 40/60

77/87 80/90

103/117 110/125

34/38 35/40

60/68 60/70

86/98 90/100

138/158 150/175

43/47 45/50

69/77 70/80

95/107 100/110

147/167 150/175

Maximum Fuse or

HACR Circuit
Breaker Size

SSA-SVX06E-EN

37

EElleeccttrriiccaall DDaattaa

Table 16. Unit wiring with electric heat (single point connection) — 7.5-25 ton SZVAV and 2-Speed VFD air handlers —
60 Hz (continued)

Tons Used With

12.5 TWE150EW*4

15 TWE180E3*3

15 TWE180E3*4

15 TWE180E4*3

15 TWE180E4*4

15 TWE180EW*3

15 TWE180EW*4

20 TWE240E3*3

20 TWE240E3*4

20 TWE240E4*3

20 TWE240E4*4

Heater Model

Number

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 32 35

BAYHTRMW30* 29.92 2 44 45

BAYHTRMW50* 49.84 2 69 70

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 36 40

BAYHTRM430* 29.92 2 51 60

BAYHTRM450* 49.84 2 81 90

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 38 40

BAYHTRM430* 29.92 2 53 60

BAYHTRM450* 49.84 2 83 90

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 30 30

BAYHTRMW30* 29.92 2 43 45

BAYHTRMW50* 49.84 2 68 70

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 32 35

BAYHTRMW30* 29.92 2 44 45

BAYHTRMW50* 49.84 2 69 70

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 38 40

BAYHTRM430* 29.92 2 53 60

BAYHTRM450* 49.84 2 83 90

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 41 45

BAYHTRM430* 29.92 2 56 60

BAYHTRM450* 49.84 2 86 90

Heater KW

Rating

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

Unit Power

Supply

575/3/60

208-230/3/60

208-230/3/60

460/3/60

460/3/60

575/3/60

575/3/60

208-230/3/60

208-230/3/60

460/3/60

460/3/60

Control

Stages

1 19 20

1

1

2

2

1

1

2

2

1 21 25

1 23 25

1 18 20

1 19 20

1

1

2

2

1

1

2

2

1 23 25

1 26 30

Minimum

Circuit

Ampacity

38/42 40/45

64/72 70/80

90/102 90/110

142/162 150/175

43/47 45/50

69/77 70/80

95/107 100/110

147/167 150/175

43/47 45/50

69/77 70/80

95/107 100/110

147/167 150/175

51/55 60/60

77/85 80/90

103/115 110/125

155/175 175/175

Maximum Fuse or

HACR Circuit
Breaker Size

38

SSA-SVX06E-EN

EElleeccttrriiccaall DDaattaa

Table 16. Unit wiring with electric heat (single point connection) — 7.5-25 ton SZVAV and 2-Speed VFD air handlers —
60 Hz (continued)

Tons Used With

20 TWE240EW*3

20 TWE240EW*4

25 TWE300E3*3

25 TWE300E4*3

25 TWE300EW*3

Notes:

1. kW ratings are at: 208/240V for 208-230V air handlers; 480V for 460V air handlers; 600V for 575V air handlers. For other than rated
voltage, capacity = (voltage/rated voltage)

2. Any power supply and circuits must be wired and protected in accordance with local codes.

3. Electric heat not available with 380/60 Hz models.

4. The HACR circuit breaker is for U.S.A. installations only.

Heater Model

Number

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 32 35

BAYHTRMW30* 29.92 2 44 45

BAYHTRMW50* 49.84 2 69 70

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 34 35

BAYHTRMW30* 29.92 2 47 50

BAYHTRMW50* 49.84 2 72 80

BAYHTRM310*

BAYHTRM320*

BAYHTRM330*

BAYHTRM350*

BAYHTRM410* 10.00

BAYHTRM420* 19.92 1 41 45

BAYHTRM430* 29.92 2 56 60

BAYHTRM450* 49.84 2 86 90

BAYHTRMW10* 10.00

BAYHTRMW20* 19.92 1 34 35

BAYHTRMW30* 29.92 2 47 50

BAYHTRMW50* 49.84 2 72 80

Heater KW

Rating

7.51/10.00

14.96/19.92

22.47/29.92

37.44/49.84

2

x rated capacity.

Unit Power

Supply

575/3/60

575/3/60

208-230/3/60

460/3/60

575/3/60

Control

Stages

1 19 20

1 22 25

1

1

2

2

1 26 30

1 22 25

Minimum

Circuit

Ampacity

51/55 60/60

77/85 80/90

103/115 110/125

155/175 175/175

Maximum Fuse or

HACR Circuit
Breaker Size

SSA-SVX06E-EN

39

EElleeccttrriiccaall DDaattaa

50 Hz Models

Includes standard air handlers

Table 17. Electrical characteristics — standard motor — 50 Hz air handler

Standard Evaporator Fan Motor

Tons Unit Model Number

4.6 TWE051DD

6.25

8.33

10.4 TWE126ED

13 TWE156ED

16.7 TWE201ED

20.9 TWE251ED

TWE076DD, ED

TWE101DD, ED

No. Volts Phase

1 380 3 1.4 8.0

1 415 3 1.0 8.4

1 380 3 3.1 17.0

1 415 3 3.2 16.8

1 380 3 3.4 17.3

1 415 3 3.2 19.0

1 380 3 3.2 35.0

1 415 3 3.1 35.0

1 380 3 4.0 33.1

1 415 3 4.0 36.1

1 380 3 8.0 43.2

1 415 3 8.0 48.6

1 380 3 7.5 71.0

1 415 3 7.2 77.0

Amps

FLA LRA

Table 18. Unit wiring — air handler — 50 Hz

Tons

4.6 TWE051DD

6.25

8.33

10.4 TWE126ED

13 TWE156ED

16.7 TWE201ED

20.9 TWE251ED

Unit Model

Number

TWE076DD, ED

TWE101DD, ED

Minimum Unit Operating

Voltage Range

380/415

380/415

380/415

380/415

380/415

380/415

380/415

Maximum Fuse

Circuit Ampacity

Ampacity

4 15

5 15

5 15

5 15

6 15

10 15

10 15

Size or Maximum

Circuit Breaker

Table 19. Unit wiring with electric heat (single point connection) — air handlers

Heater

Model No.

BAYHTRL405* 5

BAYHTRL410* 9.96 1 22 25

BAYHTRL415* 14.96 1 31 35

BAYHTRL425* 24.92 2 49 50

BAYHTRL405* 5

BAYHTRL410* 9.96 1 23 25

BAYHTRL415* 14.96 1 32 35

BAYHTRL425* 24.92 2 50 50

BAYHTRL435* 34.88 2 68 70

Heater

kW Rating

To Use

with Unit

TWE051DD

TWE076DD, ED

Control

Stages

1 13 15

1 14 15

Minimum

Circuit

Ampacity

Maximum

Fuse Breaker

Size

40

SSA-SVX06E-EN

Table 19. Unit wiring with electric heat (single point connection) — air handlers (continued)

EElleeccttrriiccaall DDaattaa

BAYHTRL405* 5

BAYHTRL410* 9.96 1 23 25

BAYHTRL415* 14.96 1 32 35

BAYHTRL425* 24.92 2 50 50

BAYHTRL435* 34.88 2 68 70

BAYHTRM410* 10

BAYHTRM420* 19.92 1 41 45

BAYHTRM430* 29.92 2 59 60

BAYHTRM450* 49.84 2 94 100

BAYHTRM410* 10

BAYHTRM420* 19.92 1 41 45

BAYHTRM430* 29.92 2 59 60

BAYHTRM450* 49.84 2 95 100

BAYHTRM410* 10

BAYHTRM420* 19.92 1 46 50

BAYHTRM430* 29.92 2 65 70

BAYHTRM450* 49.84 2 100 100

BAYHTRM410* 10

BAYHTRM420* 19.92 1 46 50

BAYHTRM430* 29.92 2 65 70

BAYHTRM450* 49.84 2 100 100

Notes:

1. Field wire must be rated at least 167°F (75°C).

2. Field wire must be rated at least 194°F (90°C).

3. Heater kW ratings are at 400v for 3 phase, 400v air handlers.

4. For other than rated voltage, capacity = (voltage/rated voltage)2 x rated capacity and kW = (voltage/rated voltage)

2 rated kW.

5. Any power supply and circuits must be wired and protected in accordance with local codes.

6. MCA and Maximum Fuse Size is based on 400V.

TWE101DD,

TWE101ED

TWE126ED

TWE156ED

TWE201ED

TWE251ED

1 14 15

1 19 20

1 23 25

1 29 30

1 29 30

SSA-SVX06E-EN

41

Start-Up

Sequence of Operation

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

EEnnssuurree tthhee ddiissccoonnnneecctt ffoorr tthhee iinnddoooorr aaiirr hhaannddlleerr iiss
cclloosseedd bbeeffoorree ooppeerraattiinngg tthhee ssyysstteemm.. OOppeerraattiinngg tthhee
oouuttddoooorr uunniitt wwiitthhoouutt tthhee iinnddoooorr ffaann eenneerrggiizzeedd ccaann
ccaauussee uunniitt ttrriipp--oouutt oonn hhiigghh pprreessssuurree ccoonnttrrooll aanndd//oorr
lliiqquuiidd fflloooodd bbaacckk ttoo tthhee ccoommpprreessssoorr..

Variable Air Volume Applications (SZVAV)

Supply Fan Mode Operation

Units configured for SZVAV control will utilize Supply
Fan Mode selection as is currently implemented into
ReliaTel controls for normal Zone Control and will be
selectable between AAUUTTOO and OONN via a connected
Zone Sensor module or through BAS/Network
controllers.

Supply Fan Mode Auto Operation

For active Cooling, and Heating operation the Supply
Fan will be commanded OONN and will ramp up to the
appropriate minimum speed once the unit determines
that there is a request for capacity control. Once the
active request is cleared and all capacity is de­energized normal supply fan off delays as implemented
on constant volume units will be in effect. During the
Supply Fan Off-Delay, the supply fan will remain
energized for the predetermined time at the previous
unit function's minimum speed. All other cases which
would bring the Supply Fan OONN will function as on
non-SZVAV units.

Supply Fan Mode ON Operation

For active unit control with the Supply Fan Mode set to
OONN, the unit will energize the Supply Fan and hold the
Fan Speed output at minimum speed until there is a
request for the fan speed to increase. This will hold true
for all cases except during Unoccupied periods in
which the Supply Fan Mode is forced to AAUUTTOO and will
operate the Supply Fan as described above for all
Cooling, and Heating requests.

Supply Air Temperature Control - Cooling

For Cooling operation the unit will control the active
capacity outputs to meet a varying, calculated
Discharge Air Setpoint that is calculated based on zone
conditions in order to maintain the Zone Temperature
to the active Zone Setpoint. Note that this setpoint will
be clamped between the user selected DA Heat and DA
Cool setpoints for compressor control. In general, as
the zone temperature rises above the ZCSP, the Active
Discharge Air Setpoint will be calculated down. This
calculated setpoint is a direct indication of space

demand and is also used to determine the proper
supply fan speed to meet the space requirements.
During active capacity control, the unit will utilize a +/-

3.5°F deadband around the active Discharge Air
Setpoint to determine when to request additional
cooling capacity. If the unit is maintaining the discharge
air temperature within the +/- 3.5°F deadband around
the calculated discharge air setpoint requirements, no
additional capacity will be requested.

Occupied Cooling Operation

For normal Cooling operation, available Cooling
capacity will be staged or modulated in order to meet
the calculated discharge air setpoint between the user
selected upper and lower limits. If the current active
cooling capacity is controlling the discharge air within
the deadband no additional Cooling capacity change
will be requested. As the Discharge Air Temperature
rises above the deadband the control will request
additional capacity as required (additional compressor
operation). As the Discharge Air Temperature falls
below the deadband the algorithm will request a
reduction in active capacity.

Compressor Cooling

Compressor output control and protection schemes
will function similar to non-SZVAV units. Normal
compressor HPC and LPC control will remain in effect
as well as normal 3-minute minimum on, off, and inter­stage timers. Also, the condenser fans will be
controlled similar to non-SZVAV units.

Cooling Sequence

If the control determines that there is a need for
compressor stages in order to meet the discharge air
requirements, once supply fan proving has been made,
the unit will begin to stage compressors accordingly.
Note that a 5 second delay will be enforced between
the command for supply fan output operation and the
command for compressor output operation. This delay
is enforced to ensure that the supply fan is energized
and ramping up to operating speed prior to energizing
compressors.

As the zone cooling demand continues to increase, if
additional capacity is required, the supply fan output
will be modulated above minimum speed in order to
meet the zone requirements. Note that the supply fan
speed will remain at the compressor stage's associated
minimum value until the control requires additional
capacity to meet the zone demand.

As the cooling load in the zone decreases the control
will reduce the speed of the fan down to minimum per
compressor stage and control the compressor outputs
accordingly. As the compressors begin to de-energize,
the Supply Fan speed will fall back to the Cooling
Stage's associated minimum fan speed but not below.
As the load in the zone continues to drop, cooling

42

SSA-SVX06E-EN

SSttaarrtt--UUpp

capacity will be reduced in order to maintain the
calculated discharge air setpoint.

Cooling Stages Minimum Fan Speed

As the unit begins to stage compressors to meet the
cooling demand, the following minimum Supply Fan
Speeds will be utilized for each corresponding Cooling
Stage. Note that the Supply Fan Speed will be allowed
to ramp up beyond the minimum speed in order to
meet the zone cooling demand. The minimum fan
speed for units with 2 stages of DX Cooling will be 58%
of the unit's full airflow capacity. At Stage 1 of DX
Cooling the Fan Speed will be at a minimum of 58%
and at Stage 2 of DX Cooling the Fan Speed will be at a
minimum of 80%.

Occupied Heating Operation

Occupied Heating operation on units configured with
SZVAV control will utilize two separate control
methodologies based on heating configurations. For all
"Staged" Heating types (Electric and Gas), the unit will
utilize 100% full airflow during all active heating
periods like traditional Constant Volume units. For
Modulating Gas heat units, the unit will have the ability
to control the discharge air temperature to the
calculated discharge air heating setpoint in order to
maintain the Zone Temperature to the Zone Heating
setpoint.

Staged Heating Operation

For units configured with Mechanical or Auxiliary Heat
once the control determines that there is an active
heating capacity request, the unit will energize the
Supply Fan and ramp up to full speed. The control
methodology during Active Heating will be identical to
traditional Constant Volume units; heating stages will
be energized/de-energized to meet the Zone Heating
demand. Note that all Electric staging sequences will
be identical to Constant Volume units.

Unoccupied Cooling and Heating Operation

For SZVAV units, the unit will control Heating and
Cooling, as during Occupied periods using the normal
heating and cooling SZVAValgorithms. In Unoccupied
periods the unit will utilize setback setpoints, and Auto
fan mode operation as on normal Constant Volume
units.

Failure and Overriding Conditions

Certain failure and overriding conditions require

special handling of the Supply Fan Speed on units
configured with SZVAV. See below for a list of these
conditions:

1. SSuuppppllyy FFaann PPrroovviinngg FFaaiilluurree - If a Supply Fan
Proving failure is detected the Supply Fan will be
de-energized after 40s of run time and the Fan
Speed output will go to the corresponding
minimum speed voltage.

2. ZZoonnee TTeemmppeerraattuurree SSeennssoorr FFaaiilluurree - If the Active
Zone Temperature input goes out of range, the unit
will discontinue all Heating, Cooling, and
Dehumidification operation.

3. SSuuppppllyy AAiirr TTeemmppeerraattuurree SSeennssoorr FFaaiilluurree - If the
Supply Air Temperature input goes out of range,
the unit will revert back to Full Airflow, Traditional
CV control. The unit will call out a Supply Air
Temperature Sensor Failure Alarm, the RTRM
System LED will flash the 2-blink error code, and
Cool LEDs will flash.

2–Speed VFD Applications

General Description of Functionality

Cooling Operation (DX Cooling)

Units with a 2-Speed VFD control scheme will utilize a
thermostat's heating and cooling outputs to
differentiate between high and low speed. When the
unit receives a G or Y1 call from the thermostat the
supply fan will run at the user selected low speed. Once
the zone load demands the second stage of cooling,
and the unit receives the Y2 call from the thermostat
the supply fan will be signaled to run at the user
selected high speed. All other compressor staging will
be handled the same as all standard thermostat
controlled units.

Heating Operation

Units with 2-Speed VFD controls will utilize traditional
CV Heating control schemes with full airflow provided
based on the customer selected VFD controlled
maximum speed. When the unit receives the W1 call
from the thermostat a relay will signal the supply fan to
run at high speed. All the electric heaters that can be
outfitted in the field are wired up to interlock W1 and
W2 so the supply fan will always run at the user
selected high speed during heat modes.

SSA-SVX06E-EN

43

Maintenance

Perform all of the indicated maintenance procedures at
the intervals scheduled. This will prolong the life of the
unit and reduce the possibility of costly equipment
failure.

Fan Belt Adjustment

WWAARRNNIINNGG

RRoottaattiinngg CCoommppoonneennttss!!

DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

The fan belts must be inspected periodically to assure
proper unit operation. Replacement is necessary if the
belts appear frayed or worn.

When removing or installing the new belts, do not
stretch them over the sheaves. Loosen the belts using
the belt tension adjustment bolts on the motor
mounting base.

Once the new belts are installed, using a Browning or
Gates tension gauge (or equivalent), adjust the belt
tension as follows:

1. To determine the appropriate belt deflection:

a. Measure the center-to-center shaft distance (in

inches) between the fan and motor sheaves.

b. Divide the distance measured in Step 1a by 64;

the resulting value represents the amount of
belt deflection that corresponds to the proper
belt tension.

2. Set the large O-ring on the belt tension gauge at the
deflection value determined in Step 1b.

3. Set the small O-ring at zero on the force scale of the

gauge plunger.

4. Place the large end of the gauge at the center of the
belt span; then depress the gauge plunger until the
large O-ring is even with the top of the next belt or
even with a straightedge placed across the fan and
motor sheaves.

5. Remove the belt tension gauge. The small
O-ring now indicates a number other than zero on
the plunger’s force scale. This 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 the Belt tension
table. If the “force” reading is outside the range,
readjust the belt tension.

NNoottee:: Actual belt deflection “force” must not

exceed the maximum “force” value shown in

Figure 27, p. 44.

Recheck the belt tension at least twice during the
first 2 to 3 days of operation. Belt tension may
decrease until the new belts are “run in”.

Figure 27. Belt tension gauge

Table 20. Belt tension measurement and deflection

Belts Cross

Section

A

B

Small Pitch

Diameter Range

3.0 - 3.6 3

3.8 - 4.8

5.0 - 7.0 4

3.4 - 4.2 4

4.4 - 5.6

5.8 - 8.8

Standard V-Belt V-Belt with Molded Notches

Min. Max. Min. Max.

3-1/2

5-1/8 7-1/8 6-1/2 9-1/8

6-3/8 8-3/4 7-3/8 10-1/8

Monthly

The following warning complies with State of
California law, Proposition 65.

44

Deflection Force (Lbs.)

4-1/2 3-7/8 5-1/2

5

5-1/2

5-1/2 5-3/4

4-1/2 6-1/4

5

6-7/8

8

SSA-SVX06E-EN

MMaaiinntteennaannccee

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!

DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss aanndd ddiisscchhaarrggee aallll mmoottoorr ssttaarrtt//rruunn
ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr lloocckkoouutt//
ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbee
iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. FFoorr vvaarriiaabbllee ffrreeqquueennccyy
ddrriivveess oorr ootthheerr eenneerrggyy ssttoorriinngg ccoommppoonneennttss
pprroovviiddeedd bbyy TTrraannee oorr ootthheerrss,, rreeffeerr ttoo tthhee
aapppprroopprriiaattee mmaannuuffaaccttuurreerr’’ss lliitteerraattuurree ffoorr
aalllloowwaabbllee wwaaiittiinngg ppeerriiooddss ffoorr ddiisscchhaarrggee ooff
ccaappaacciittoorrss.. VVeerriiffyy wwiitthh aann aapppprroopprriiaattee vvoollttmmeetteerr
tthhaatt aallll ccaappaacciittoorrss hhaavvee ddiisscchhaarrggeedd..

FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee ssaaffee
ddiisscchhaarrggee ooff ccaappaacciittoorrss,, sseeee PPRROODD--SSVVBB0066AA--EENN..

NNOOTTIICCEE

OOppeerraattiinngg UUnnddeerr VVaaccuuuumm!!

DDoo nnoott ooppeerraattee oorr aappppllyy ppoowweerr ttoo tthhee ccoommpprreessssoorr
wwhhiillee uunnddeerr aa vvaaccuuuumm..

WWAARRNNIINNGG

FFiibbeerrggllaassss WWooooll!!

YYoouu MMUUSSTTwweeaarr aallll nneecceessssaarryy PPeerrssoonnaall PPrrootteeccttiivvee
EEqquuiippmmeenntt ((PPPPEE)) iinncclluuddiinngg gglloovveess,, eeyyee pprrootteeccttiioonn,,
aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr,, lloonngg
sslleeeevveess aanndd ppaannttss wwhheenn wwoorrkkiinngg wwiitthh pprroodduuccttss
ccoonnttaaiinniinngg ffiibbeerrggllaassss wwooooll..

PPrreeccaauuttiioonnaarryy MMeeaassuurreess::

•• AAvvooiidd bbrreeaatthhiinngg ffiibbeerrggllaassss dduusstt..

•• UUssee aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr..

•• AAvvooiidd ccoonnttaacctt wwiitthh tthhee sskkiinn oorr eeyyeess.. WWeeaarr
lloonngg--sslleeeevveedd,, lloooossee--ffiittttiinngg ccllootthhiinngg,, gglloovveess,,
aanndd eeyyee pprrootteeccttiioonn..

•• WWaasshh ccllootthheess sseeppaarraatteellyy ffrroomm ootthheerr ccllootthhiinngg;;
rriinnssee wwaasshheerr tthhoorroouugghhllyy..

•• OOppeerraattiioonnss ssuucchh aass ssaawwiinngg,, bblloowwiinngg,, tteeaarr-­oouutt,, aanndd sspprraayyiinngg mmaayy ggeenneerraattee ffiibbeerr
ccoonncceennttrraattiioonnss rreeqquuiirriinngg aaddddiittiioonnaall
rreessppiirraattoorryy pprrootteeccttiioonn.. UUssee tthhee aapppprroopprriiaattee
NNIIOOSSHH aapppprroovveedd rreessppiirraattoorr..

FFiirrsstt AAiidd MMeeaassuurreess::

•• EEyyee CCoonnttaacctt -- FFlluusshh eeyyeess wwiitthh wwaatteerr ttoo
rreemmoovvee dduusstt.. IIff ssyymmppttoommss ppeerrssiisstt,, sseeeekk
mmeeddiiccaall aatttteennttiioonn..

•• SSkkiinn CCoonnttaacctt -- WWaasshh aaffffeecctteedd aarreeaass ggeennttllyy
wwiitthh ssooaapp aanndd wwaarrmm wwaatteerr aafftteerr hhaannddlliinngg..

Conduct the following maintenance inspections once
per month:

Inspect air filters and clean (or replace) if necessary.

Check unit wiring to ensure all connections are tight
and that the wiring insulation is intact.

Check drain pans and condensate piping to insure
they are free of obstacles.

Manually rotate the indoor fan to ensure proper
operation.

Inspect the evaporator coils for dirt and debris. If
the coils appear dirty, clean them.

Observe indoor fan operation and correct any
unusual or excessive vibration. Clean blower
wheels as needed.

Annually (Cooling Season)

The following maintenance procedures must be
performed at the beginning of each cooling season to
ensure efficient unit operation:

Perform all of the monthly maintenance
inspections.

With the unit operating, check unit superheat and
record the reading in the “Maintenance Log,” p. 46

Remove any accumulation of dust and/or dirt from
the unit casing.

Remove corrosion from any surface and repaint.
Check the gasket around the control panel door to
ensure it fits correctly and is in good condition to
prevent water leakage.

Inspect the evaporator fan belt. If it is worn or
frayed, replace it.

Inspect the control panel wiring to ensure that all
connections are tight and that the insulation is
intact.

Check refrigerant piping and fittings for leaks.

Inspect the evaporator coils for dirt and debris. If
the coils appear dirty, clean them.

Coil Cleaning

Regular coil maintenance, including annual cleaning­enhances the unit's operating efficiency by minimizing:

• compressor head pressure and amperage draw

• water carryover

• fan brake horsepower

• static pressure losses

At least once each year — or more often if the unit is
located in a “dirty” environment — clean the coil using
the instructions outlined below. Be sure to follow these
instructions as closely as possible to avoid damaging
the coils.

SSA-SVX06E-EN

45

MMaaiinntteennaannccee

Maintenance Log

Subcooling (°F)

(at service valve)

Superheat (°F)

(at compressor)

Circuit #1 Circuit #2 Circuit #1 Circuit #2

Discharge Pressure

(C1) (C2) (C1) (C2)

Suction Pressure

Wet

Bulb

Dry

Bulb

Evaporator Entering Air Compressor

(°F)

Temp.

Ambient

Date

Note: Perform each inspection once per month (during cooling season) while unit is operating

46

SSA-SVX06E-EN

Wiring Diagram Matrix

Table 21. Wiring schematics for TWE air handlers

Electromechanical

(Sd)

Model No. Ton Circuit Volts Hz Ph

TWE051DD 4.6

TWE061D3 5

TWE061D4 5

TWE061DW 5

TWE061DK 5

TTA076DD 6.25

TWE061D1 5

TWE090D1 7.5

TWE120D1 10

TWE061E3 5 Dual 208-230 60 3 2313-0431

TWE061E4 5 Dual 460 60 3 2313-0431

TWE061EW 5 Dual 575 60 3 2313-0431

TWE061EK 5 Dual 380 60 3 2313-0431

TWE061E1 5 Dual 208-230 60 1 2313-0432

TWE090E1 7.5 Dual 208-230 60 1 2313-0432

TWE120E1 10 Dual 208-230 60 1 2313-0432

TWE090D3 7.5

TWE090D4 7.5

TWE090DW 7.5

TWE090DK 7.5

TWE090E3 7.5 Dual 208-230 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE090E4 7.5 Dual 460 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE090EW 7.5 Dual 575 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE090EK 7.5 Dual 380 60 3 2313-0431

TWE101DD 8.33

TWE101ED 8.33 Dual 380-415 50 3 2313-0431

TWE120D3 10

TWE120DW 10

TWE120DK 10

TWE120E3 10 Dual 208-230 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE120EW 10 Dual 575 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE120EK 10 Dual 380 60 3 2313-0431

TWE126ED 10.4 Dual 380-415 50 3 2313-0431

TWE150E3 12.5 Dual 208-230 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE150EW 12.5 Dual 575 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE150EK 12.5 Dual 380 60 3 2313-0431

TWE156ED 13 Dual 380-415 50 3 2313-0431

TWE180E3 15 Dual 208-230 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE180EW 15 Dual 575 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE180EK 15 Dual 380 60 3 2313-0431

TWE201ED 16.7 Dual 380-415 50 3 2313-0431

TWE240E3 20 Dual 208-230 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE240E4 20 Dual 380-415 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE240EW 20 Dual 575 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE240EK 20 Dual 380 60 3 2313-0431

TWE251ED 20.9 Dual 380-415 50 3 2313-0431

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

Single

380-415 50 3 2313-0401

208-230 60 3 2313-0401

460 60 3 2313-0401

575 60 3 2313-0401

380 60 3 2313-0401

380-415 50 3 2313-0401

208-230 60 1 2313-0402

208-230 60 1 2313-0402

208-230 60 1 2313-0402

208-230 60 3 2313-0401 2313-0451 2313-0453 1213-1400 1213-1401

460 60 3 2313-0401 2313-0451 2313-0453 1213-1400 1213-1401

575 60 3 2313-0401 2313-0451 2313-0453 1213-1400 1213-1401

380 60 3 2313-0401

380-415 50 3 2313-0401

208-230 60 3 2313-0401 2313-0451 2313-0453 1213-1400 1213-1401

575 60 3 2313-0401 2313-0451 2313-0453 1213-1400 1213-1401

380 60 3 2313-0401

Schematic/
Connection

Electromechanical

(2 speed)

Reliatel

Schematic Connection Schematic Connection

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

N/A N/A N/A N/A

SSA-SVX06E-EN

47

WWiirriinngg DDiiaaggrraamm MMaattrriixx

Table 21. Wiring schematics for TWE air handlers (continued)

Electromechanical

(Sd)

Model No. Ton

TWE300E3 25 Dual 208-230 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE300E4 25 Dual 380-415 50 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE300EW 25 Dual 575 60 3 2313-0431 2313-0451 2313-0453 1213-1400 1213-1401

TWE300EK 25 Dual 380 60 3 2313-0431

Note: Wiring diagrams are available through e-Library or by contacting your local sales office.

Circuit Volts Hz

Ph

Schematic/
Connection

Electromechanical

(2 speed)

Reliatel

Schematic Connection Schematic Connection

N/A N/A N/A N/A

The manufacturer optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand,
the leader in creating and sustaining safe, comfortable and energy efficient environments, the manufacturer offers a
broad 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 improvements and reserves the right to change design and specifications without notice.

©2015 Trane All rights reserved

SSA-SVX06E-EN

Supersedes SSA-SVX06D-EN (January 2014)

02 Mar 2015

We are committed to using environmentally

conscious print practices that reduce waste.