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88-A4AC4001-1B-EN

SYSTEM FAULTS

REFRIGERANT CIRCUIT

Head Pressure Too High

Head Pressure Too Low

Suction Pressure Too High

Suction Pressure Too Low

Liquid Refrig. Floodback (TXV/EEV)

Liquid Refrig. Floodback

(Cap. Tube)

I.D. Coil Frosting

Compressor Runs

Inadequate or No Cooling/Htg

ELECTRICAL

Compressor & O.D. Fan

Won’t Start
Compressor Will Not Start

But O.D. Fan Runs

O.D. Fan Won’t Start

Compressor Hums But Won’t Start

Compressor Cycles on IOL

I.D. Blower Won’t Start

DEFROST

Unit Won’t Initiate Defrost

Defrost Terminates on Time

Unit Icing Up

R S

PLY

HIG

H V

OLT

E W

IRIN

N C

APA

CIT

STA

PAC

ITO

STA

LAY

NTA

CTO

R C

TAC

W V

OLT

E W

IRIN

L T

STA

NTA

CTO

R C

OIL

W V

OLT

E F

STU

INE

FFIC

IEN

T C

F. U

F. O

IVE

AP.

LES

S. O

.D.

AIR

FLO

O.D

. A

CIR

LAT

ION

V/E

K O

EAT

S. I

.D.

AIR

FLO

F. C

IR.

STR

ICT

ION

V L

KIN

V C

OIL

EFE

IVE

K V

ALV

E L

KIN

T R

ELA

Y D

EF.

T C

C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H

C
H
C
H
C
H
C
H
C
H
C
H

C
H
C
H
C
H

P
P

P
P
P
P
P
P

P
P
P
P

S
S

S
S
S
S

S
S

S
S
S
S

S
S
S
S
S
S
S
S

S
S

P
P

S
S

P
P

S
S

P
P

P
P
P
P

P
P
P
P
P
P
P
P

S
S
S
S

S
S

P
P

S
S

S
S
S

S
S

S
S
S

S
S

P
P

S
S
S
S
S
S

S
S

P
P

S
S
S
S

S
S

S
S
P
P

S
S

P
P
P

P
P

S
S

P P

C - Cooling H - Heating P - Primary Causes S - Secondary Causes

- 3 Phase Only

Section 16. Refrigerant Circuits

1 1/2-Ton Units

PRINTED FROM D158513P01

Содержание A4AC4018A1000A

Страница 1: ...systems All of the manufacture s split systems are AHRI rated with Piston TXV EEV indoor systems Some of the benefits of installing approved matched indoor and outdoor split systems are maximum effici...

Страница 2: ...EN and APP APG011 EN or APP APG012 EN Extreme caution should be exercised when opening the Liquid Line Service Valve Turn counterclockwise until the valve stem just touches the rolled edge No torque...

Страница 3: ...nt Line Routing 8 Section 7 Refrigerant Line Brazing 9 Section 8 Refrigerant Line Leak Check 11 Section 9 Evacuation 11 Section 10 Service Valves 12 Section 11 Electrical Low Voltage 13 Section 12 Ele...

Страница 4: ...ftware Program 32 3312 03 or latest revi sion When mounting the outdoor unit on a roof be sure the roof will support the unit s weight Properly selected isolation is recommended to alleviate sound or...

Страница 5: ...onable Position the outdoor unit a minimum of 12 from any wall or surrounding shrubbery to ensure adequate airflow Outdoor unit location must be far enough away from any structure to prevent excess ro...

Страница 6: ...e Vapor Line Connection Liquid Line Connection A4AC4018A 3 4 3 8 3 4 3 8 A4AC4023A 3 4 3 8 3 4 3 8 A4AC4024A 3 4 3 8 3 4 3 8 A4AC4030A 3 4 3 8 3 4 3 8 A4AC4036A 3 4 3 8 3 4 3 8 A4AC4042A 7 8 3 8 7 8 3...

Страница 7: ...5 4 Refrigerant Line Insulation Important The Vapor Line must always be insulated DO NOT allow the Liquid Line and Vapor Line to come in direct metal to metal contact Vapor Line Liquid Line Insulatio...

Страница 8: ...uld be insulated and isolated Isolate the lines from all ductwork Minimize the number of 90 turns Comply with National State and Local Codes when isolating line sets from joists rafters walls or other...

Страница 9: ...ctwork Isolator Line Set Section 7 Refrigerant Line Brazing 7 1 Braze The Refrigerant Lines STEP 1 Remove caps or plugs Use a debur ing tool to debur the pipe ends Clean both internal and external sur...

Страница 10: ...rvice valves Continue the dry nitrogen purge Do not remove the wet rag until all brazing is completed Important Remove the wet rag before stopping the dry nitrogen purge Note Install drier in Liquid L...

Страница 11: ...TEP 1 Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen 150 PSIG Section 9 Evacuation 9 1 Evacuate the Refrigerant Lines and Indoor Coil Important Do not open the ser...

Страница 12: ...P 3 Replace the valve stem cap to prevent leaks Tighten finger tight plus an additional 1 6 turn 10 2 Open the Liquid Service Valve Important Leak check and evacuation must be completed before opening...

Страница 13: ...G 300 Ft 11 2 Low Voltage Hook up Diagrams R G B W1 W2 R B O Y X2 R G B C O Y W HEAT PUMP SYSTEMS Blue 24 VAC HOT FAN 24 VAC Common SOV COOL HEAT 1st STAGE HEATING 2nd STAGE EMERGENCY HEAT Thermostat...

Страница 14: ...ly one stage of heat If equipped with second stage heat When using a BK enabled comfort control cut BK jumper and bypass Y and YLo at the furnace Connect BK from comfort control to BK of the furnace T...

Страница 15: ...igh Voltage Ground Ground the outdoor unit per national state and local code requirements LIVE ELECTRICAL COMPONENTS During installation testing servicing and troubleshooting of this product it may be...

Страница 16: ...t s to apply power to the indoor and outdoor units STEP 5 Set system thermostat to ON OFF DONE CANCEL ON OFF STEP 4 Wait one 1 hour before starting the unit if compressor crankcase heater acces sory i...

Страница 17: ...he refrigerant line total length and lift measurements from Section 5 and use line length adders as shown in Section 5 2 if required Total Line Length __________ Ft Vertical Change Lift __________ Ft...

Страница 18: ...LINE LENGTH FEET REFRIGERANT LINE LIFT FEET 10 20 25 30 40 60 Add 4 of Subcooling Add 3 of Subcooling Add 2 of Subcooling Add 1 of Subcooling Use Design Subcool Value 60 50 40 30 25 20 15 10 0 SUBCOO...

Страница 19: ...ressure should be ap proximately 327 PSI This is the shown as the intersection of the Final Subcooling column and the Liquid Temperature row Table 14 2 8 9 10 11 12 13 14 179 182 185 188 191 195 198 1...

Страница 20: ...331 336 95 331 336 341 346 351 355 360 100 355 360 365 370 376 381 386 105 381 386 391 396 402 407 413 110 407 413 418 424 429 435 441 115 435 441 446 452 458 464 470 120 464 470 476 482 488 495 501 1...

Страница 21: ...25 27 28 30 31 95 4 6 8 10 13 14 16 18 20 22 23 25 26 28 29 100 6 8 10 12 13 16 18 20 21 23 25 27 29 105 4 6 7 9 11 13 15 18 20 22 24 26 28 110 4 7 9 11 13 16 18 21 23 26 28 115 6 9 12 14 16 19 21 24...

Страница 22: ...Checkout Procedures and Troubleshooting 15 1 Operational And Checkout Procedures CHECKOUT PROCEDURE After installation has been completed it is recommended that the entire system be checked against t...

Страница 23: ...re possible short in field wiring Jumper R to Y low voltage terminals at thermostat sub base Does the contactor energize NO Repair or replace connecting wiring YES Go To Compressor won t run Replace t...

Страница 24: ...or NO Check for locked rotor Is voltage present at C to S and C to R with locked rotor amps on C YES Check Start Capacitor and Relay if present and Run Capacitor Do the start components and run capaci...

Страница 25: ...O L T A G E F U S E S T U C K C O M P R E S S O R I N E F F I C I E N T C O M P R E F U N D E R C H A R G E R E F O V E R C H A R G E E X C E S S I V E E V A P L O A D N O N C O N D E N S A B L E S R...

Страница 26: ...26 88 A4AC4001 1B EN 2 2 1 2 3 Ton Units PRINTED FROM D157394P01 3 1 2 4 Ton Units PRINTED FROM D158514P01...

Страница 27: ...88 A4AC4001 1B EN 27 5 Ton Units PRINTED FROM D158515P01...

Страница 28: ...19 Trane All Rights Reserved 11 19 The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice Represe...

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