background image

8

SSP-SVX001D-EN

“Dimensional Data,” p. 10

).

Unit Mounting

W

WA

AR

RN

NIIN

NG

G

R

Riisskk o

off R

Ro

oo

off C

Co

olllla

ap

pssiin

ng

g!!

F

Fa

aiillu

urre

e tto

o e

en

nssu

urre

e p

prro

op

pe

err ssttrru

uccttu

urra

all rro

oo

off ssu

up

pp

po

orrtt

cco

ou

ulld

d cca

au

usse

e tth

he

e rro

oo

off tto

o cco

olllla

ap

psse

e,, w

wh

hiicch

h cco

ou

ulld

d

rre

essu

ulltt iin

n d

de

ea

atth

h o

orr sse

erriio

ou

uss iin

njju

urry

y a

an

nd

d p

prro

op

pe

errtty

y

d

da

am

ma

ag

ge

e..

C

Co

on

nffiirrm

m w

wiitth

h a

a ssttrru

uccttu

urra

all e

en

ng

giin

ne

ee

err tth

ha

att tth

he

e rro

oo

off

ssttrru

uccttu

urre

e iiss ssttrro

on

ng

g e

en

no

ou

ug

gh

h tto

o ssu

up

pp

po

orrtt tth

he

e

cco

om

mb

biin

ne

ed

d w

we

eiig

gh

htt o

off tth

he

e rro

oo

offccu

urrb

b,, tth

he

e u

un

niitt,, a

an

nd

d a

an

ny

y

a

acccce

esssso

orriie

ess..

Structural Preparation

N

NO

OT

TIIC

CE

E

R

Ro

oo

off D

Da

am

ma

ag

ge

e!!

S

Sy

ysstte

em

m cco

on

ntta

aiin

nss o

oiill a

an

nd

d rre

effrriig

ge

erra

an

ntt u

un

nd

de

err h

hiig

gh

h

p

prre

essssu

urre

e.. R

Ro

oo

offss ssh

ho

ou

ulld

d b

be

e p

prro

otte

ecctte

ed

d ffrro

om

m

e

ex

xp

po

ossu

urre

e tto

o o

oiillss a

an

nd

d rre

effrriig

ge

erra

an

ntt iin

n tth

he

e ssy

ysstte

em

m.. IIff

rro

oo

offtto

op

p iiss n

no

ott p

prro

otte

ecctte

ed

d,, d

da

am

ma

ag

ge

e tto

o tth

he

e rro

oo

off m

ma

ay

y

o

occccu

urr..

IIm

mp

po

orrtta

an

ntt:: Refer to local building codes for proper

installation. All installation must comply
with local building codes.

Rooftop Mounting

If the unit will be roof mounted, determine for certain
that the structure is strong enough to support the unit
and any required accessories, see

“Weights,” p. 16

.

The unit should be elevated on a level, field fabricated
four-inch steel or wood 4" x 4" mounting frame.
Complete the frame and secure it into position before
lifting the unit to the roof. The mounting frame must
support a minimum of three of the unit’s four sides and
should span roof supports to distribute the load on the
roof.

Figure 1. Roof mounted unit

Outdoor Unit

Gas (Suction)
Line - Insulated

Liquid Line
Insulated

Unit Mounting
Channels

       Elevation
(Mounting Frame)

Roof Trussing

Ceiling

      Roof 
Construction

     6”
Radius

Ground Level Mounting

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

“Dimensional Data,” p. 10

).

Snow Belt Recommendations

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

“Dimensional Data drawings,” p. 10

.

Installation Checklist

Complete this checklist once the unit is installed to
verify that all recommended procedures have been
accomplished before starting the system. Do not
operate the system until all items covered by this
checklist are complete.

Inspect unit location for proper required service
clearances.

P

Prre

e--IIn

nsstta

alllla

attiio

on

n

Summary of Contents for TWA0724-A Series

Page 1: ...ing on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment March 2022 S SS SP P S SV VX X0 00 01 1D D E EN N Installation Ope...

Page 2: ...r r p pr ro op pe er r P PP PE E f fo or r t th he e j jo ob b b be ei in ng g u un nd de er rt ta ak ke en n c co ou ul ld d r re es su ul lt t i in n d de ea at th h o or r s se er ri io ou us s i i...

Page 3: ...u uc ct ti io on ns s b be el lo ow w c co ou ul ld d r re es su ul lt t i in n a an n e ex xp pl lo os si io on n w wh hi ic ch h c co ou ul ld d r re es su ul lt t i in n d de ea at th h o or r s se...

Page 4: ...ng and Isolating Refrigerant Lines 21 Refrigerant Charging Procedure 22 Charging Levels 23 Liquid Charging 24 Electrical Wiring 24 Unit Power Supply 25 Low Voltage Wiring 25 Symbio Controls 25 Field W...

Page 5: ...0Hz Digit 9 Refrigeration Circuit Stage A 1 Compressor 1 Line 1 Stage Single D 2 Compressors 2 Line 2 Stage Dual Digit 10 Major Design Sequence A Rev A B Rev B Digit 11 Minor Design Sequence A Rev A D...

Page 6: ...s 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 r...

Page 7: ...lt t i in n d de ea at th h o or r s se er ri io ou us s i in nj ju ur ry y a an nd d e eq qu ui ip pm me en nt t o or r p pr ro op pe er rt ty y o on nl ly y d da am ma ag ge e T Te es st t l li if f...

Page 8: ...see Weights p 16 The unit should be elevated on a level field fabricated four inch steel or wood 4 x 4 mounting frame Complete the frame and secure it into position before lifting the unit to the roof...

Page 9: ...tremes in temperature Performed initial leak test Evacuated each refrigerant circuit to 500 microns Charged each circuit with proper amount of R 410A R 22 Electrical Wiring Provided unit power wiring...

Page 10: ...in mm W in mm D in mm TWA0604DA 0724 A 0764DA 0904 A R 410A and TTA090 R 22 39 2 996 42 1 1070 36 3 922 TWA0604DD 0724 D 0764DD 0904 D R 410A 39 2 996 51 9 1317 39 3 999 TWA101 120 R 410A TWA120 R 22...

Page 11: ...ONTROL WIRING OPTIONAL LINE VOLTAGE CONTROL WIRING SUCTION LINE LIQUID LINE BOTTOM OF UNIT 7 16 11 11 DIA ISOLATOR MOUNTING HOLES OUTSIDE HOLES 4 PLACES SERVICE PANEL SIDE SEE NOTE 4 HAIL GUARD OPTION...

Page 12: ...S 4 PLACES SERVICE PANEL SIDE 50 7 8 1293 51 11 16 1312 WITH HAIL GUARD SEE NOTE 1 THIS HOLE FOR 7 5T ONLY REFRIGERANT GUAGE ACCESS CONTROL WIRING OPTIONAL SERVICE CLEARANCE 48 1219 2 SEE NOTE 2 FOR C...

Page 13: ...NOTE 1 REFRIGERANT GUAGE ACCESS CONTROL WIRING OPTIONAL SERVICE CLEARANCE 48 1219 2 SEE NOTE 2 FOR CLEARANCE HAIL GUARD OPTIONAL HAIL GUARD OPTIONAL NOTES 1 ACCESS OPENING IS FOR FIELD INSTALLED BAYL...

Page 14: ...IDE HOLES 4 PLACES SERVICE PANEL SIDE 50 7 8 1293 51 11 16 1312 WITH HAIL GUARD SEE NOTE 1 REFRIGERANT GUAGE ACCESS CONTROL WIRING OPTIONAL SERVICE CLEARANCE 48 1219 2 SEE NOTE 2 FOR CLEARANCE HAIL GU...

Page 15: ...NEL SIDE BOTTOM OF UNIT SUCTION LINE REFRIGERANT GAUGE ACCESS LINE VOLTAGE LIQUID LINE CONTROL WIRING FRONT DETAIL A DIMENSIONAL DEATIL NOTES 1 MINIMUM CLEARANCE FOR PROPER OPERATION IS 36 914 4 FROM...

Page 16: ...ble 2 TWA R 22 unit and corner weights lbs 60 Hz Tons Model No Shipping Max lbs Net Max lbs Corner Weights 1 2 3 4 7 5 TWA0902 A 397 360 112 105 74 69 10 TWA1202 A 482 437 110 129 91 107 15 TWA1802 D...

Page 17: ...A072 090 120 TWA060 076 101 TWA0902 A 1202 A 1 2 3 4 LIFTING HOLES BOTH SIDES SERVICE ACCESS Figure 9 TWA180 240 TWA156 201 TWA1802 D TWA2402 D SERVICE ACCESS SERVICE ACCESS 1 2 3 4 LIFTING HOLES BOTH...

Page 18: ...ble elevation difference TTA or TWA below indoor unit Acceptable liquid riser height based on total liquid line length below indoor unit Contact manufacturer for review N No ot te e Route refrigerant...

Page 19: ...R Re ec co ov ve er r r re ef fr ri ig ge er ra an nt t t to o r re el li ie ev ve e p pr re es ss su ur re e b be ef fo or re e o op pe en ni in ng g t th he e s sy ys st te em m S Se ee e u un ni it...

Page 20: ...Un ni it t D Da am ma ag ge e D Do o n no ot t a ap pp pl ly y h he ea at t t to o r re em mo ov ve e s se ea al l c ca ap ps s u un nt ti il l t th he e g ga au ug ge e p po or rt t c co or re es s...

Page 21: ...e refrigerant charging hoses from liquid and gas gauge ports 9 Leak test the entire system Using proper procedures and caution as described in the previous section repair any leaks found and repeat th...

Page 22: ...e the balance of the unit charge can be metered through a charging manifold set as liquid preferably through a schrader valve into the suction line to the compressor only while the compressor is runni...

Page 23: ...04 B 11 8 11 8 0 5 1 2 1 125 1 1 8 TWA1014DA w TWE1014DA 27 3 N A 0 5 1 2 1 375 1 3 8 TWA1014DD w TWE1014DB 13 9 14 0 0 5 1 2 1 125 1 1 8 TWA1204 A w TWE1204 A 27 5 N A 0 5 1 2 1 375 1 3 8 TWA1204 D w...

Page 24: ...e d di is sc co on nn ne ec ct ts s a an nd d d di is sc ch ha ar rg ge e a al ll l m mo ot to or r s st ta ar rt t r ru un n c ca ap pa ac ci it to or rs s b be ef fo or re e s se er rv vi ic ci in n...

Page 25: ...Mount the indoor thermostat zone sensor or programmable zone sensor in accordance with the corresponding thermostat installation instructions Install color coded weather proof multi wire cable accordi...

Page 26: ...g Refer to the latest version of Condenser and Air Handler Pairing guide SS SVN016 EN for instructions on field wiring connections Refrigerant Circuit Figure 15 Typical split system heat pump cooling...

Page 27: ...ISCHARGE TEMPERATURE LIMIT DTL HIGH PRESSURE SWITCH HPCO DE ICE LOOP NOTE A CHECK VALVES 4 WAY SWITCHOVER VALVE LOW PRESSURE SWITCH LPCO EQUALIZER LINE NOTE A ONLY ONE OUTDOOR AND INDOOR COIL REFRIGER...

Page 28: ...ompressor and the outdoor fans if suction pressure drops below the Low Pressure Cut Out setting Once the suction pressure has returned to normal the compressor and outdoor fans will cycle back on High...

Page 29: ...y W Wh he en n i it t i is s n ne ec ce es ss sa ar ry y t to o w wo or rk k w wi it th h l li iv ve e e el le ec ct tr ri ic ca al l c co om mp po on ne en nt ts s h ha av ve e a a q qu ua al li if...

Page 30: ...mbio Service and Installation mobile application The modes shown below can be initiated Depending on the equipment configuration the controller will energize the appropriate outputs A user selected ti...

Page 31: ...ng maintenance inspections once per month Check unit wiring to ensure all connections are tight and that the wiring insulation is intact Inspect the condenser coils for dirt and debris If the coils ap...

Page 32: ...32 SSP SVX001D EN inadvertently bent during the cleaning process M Ma ai in nt te en na an nc ce e...

Page 33: ...or Superheat F at compressor Subcooling F at liquid line Dry Bulb Wet Bulb Suction Pressure Discharge Pressure Circuit 1 Circuit 2 Circuit 1 Circuit 2 C1 C2 C1 C2 Note Perform each inspection once per...

Page 34: ...04 A 436766050001 436766270001 TWA0764DD TWE0764DB 436759340001 436759670001 TWA0904 D TWE0904 B 436759350001 436759680001 TWA1014DA TWE1014DA 436766080001 436766340001 TWA1204 A TWE1204 A 43676609000...

Page 35: ...060 072 090 120 and Digit 9 A 1213 4183 Control Schematic Wiring Diagram for units with Dual compressor and Single Fan All TWA Units with Digit 4 6 060 072 076 090 and Digit 9 D 1213 4184 Control Sch...

Page 36: ...or shipments outside the conterminous United States a replacement product or at the option of the warrantor parts for the repair of the product not conforming to this warranty and which have been retu...

Page 37: ...SSP SVX001D EN 37 N No ot te es s...

Page 38: ...38 SSP SVX001D EN N No ot te es s...

Page 39: ...SSP SVX001D EN 39 N No ot te es s...

Page 40: ...se visit trane com or americanstandardair com Trane and American Standard have a policy of continuous product and product data improvement and reserve the right to change design and specifications wit...

Reviews: