Trane 4TTA3030A4000C Service manual

IMPORTANT — This document contains a wiring diagram, a parts list, and service information.This is customer property
and is to remain with this unit. Please return to service information pack upon completion of work.
WARNING
!
THIS INFORMATION IS INTENDED FOR USE BY INDIVIDUALS
POSSESSING ADEQUATE BACKGROUNDS OF ELECTRICAL AND
MECHANICAL EXPERIENCE. ANY ATTEMPT TO REPAIR A CENTRAL AIR
CONDITIONING PRODUCT MAY RESULT IN PERSONAL INJURY AND
OR PROPERTY DAMAGE. THE MANUFACTURER OR SELLER CANNOT
BE RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION,
NOR CAN IT ASSUME ANY LIABILITY IN CONNECTION WITH ITS USE.
CAUTION
!
RECONNECT ALL GROUNDING DEVICES.
ALL PARTS OF THIS PRODUCT CAPABLE OF CONDUCTING
ELECTRICAL CURRENT ARE GROUNDED. IF GROUNDING
WIRES, SCREWS, STRAPS, CLIPS, NUTS OR WASHERS USED
TO COMPLETE A PATH TO GROUND ARE REMOVED FOR
SERVICE, THEY MUST BE RETURNED TO THEIR ORIGINAL
POSITION AND PROPERLY FASTENED.
WARNING:
HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE
CAPACITORS BEFORE SERVICING
© 2013 Trane
NOTICE: The manufacturer has a policy of continuous product and product data improvement
and it reserves the right to change design and specifications without notice.
Service Facts
CAUTION
!
UNIT CONTAINS R-410A REFRIGERANT!
R-410A OPERATING PRESSURE EXCEEDS THE
LIMIT OF R-22. PROPER SERVICE EQUIPMENT IS
REQUIRED. FAILURE TO USE PROPER SERVICE
TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR
PERSONAL INJURY.
SERVICE
USE ONLY R-410A REFRIGERANT AND
APPROVED POE COMPRESSOR OIL.
PRODUCT SPECIFICATIONS
OUTDOOR UNIT 12
POWER CONNS. — V/PH/HZ 3
MIN. BRCH. CIR. AMPACITY
BR. CIR. PROT. RTG. – MAX. (AMPS)
COMPRESSOR
NO. USED - NO. SPEEDS
VOLTS/PH/HZ
R.L. AMPS 7- L.R. AMPS
FACTORY INSTALLED
START COMPONENTS 8
INSULATION/SOUND BLANKET
COMPRESSOR HEAT
OUTDOOR FAN
DIA. (IN.) - NO. USED
TYPE DRIVE - NO. SPEEDS
CFM @ 0.0 IN. W.G. 4
NO. MOTORS - HP
MOTOR SPEED R.P.M.
VOLTS/PH/HZ
F.L. AMPS
OUTDOOR COIL — TYPE
ROWS - F.P.I.
FACE AREA (SQ. FT.)
TUBE SIZE (IN.)
REFRIGERANT
LBS. — R-410A (O.D. UNIT) 5
FACTORY SUPPLIED
LINE SIZE - IN. O.D. GAS 6
LINE SIZE - IN. O.D. LIQ. 6
CHARGING SPECIFICATION
SUBCOOLING
DIMENSIONS
CRATED (IN.)
WEIGHT
SHIPPING (LBS.)
NET (LBS.)
4TTA3-SF4-1A
Split System
Cooling
4TTA3030A4000C, 4TTA3036B4000A
01/13
Tubing lengths in excess of sixty (60) feet see application software.
CAUTION
!
DISCONNECT ALL POWER TO COMPRESSOR WHEN
COMPRESSOR MOTOR ROTATION IS REVERSED. CHANGE
ANY TWO CUSTOMER POWER LEADS TO CORRECT ROTATION.
Failure to change customer power leads to correct compressor
rotation may result in compressor damage during operation.
COMPRESSOR MOTOR ROTATION
HOT SURFACE! DO NOT TOUCH TOP OF COMPRESSOR.
May cause minor to severe burning.
CAUTION
!
CONTAINS REFRIGERANT!
SYSTEM CONTAINS OIL AND REFRIGERANT UNDER
HIGH PRESSURE. RECOVER REFRIGERANT TO RELIEVE
PRESSURE BEFORE OPENING SYSTEM.
Failure to follow proper procedures can result in personal
illness or injury or severe equipment damage.
CAUTION
!
4TTA3036B4000A
460/3/60
8
15
SCROLL
1 - 1
460/3/60
5.8 - 38
NO
NO
YES
PROPELLER
23 - 1
DIRECT - 1
2800
1 - 1/8
825
460/3/60
.40
SPINE FIN™
1 - 24
12.89
3/8
5 LBS., 12 OZ.
YES
3/4
3/8
10°F
H X W X D
34 x 30.1 x 33
176
149
4TTA3030A4000C
460/3/60
5
15
RECIP
1 - 1
460/3/60
3.7 - 28
NO
NO
YES
PROPELLER
23 - 1
DIRECT - 1
3150
1 - 1/8
825
460/3/60
.40
SPINE FIN™
1 - 24
18.75
3/8
5 LBS., 11 OZ.
YES
3/4
3/8
10°F
H X W X D
38 x 30.1 x 33
222
195
1Certified in accordance with the Air-Source Unitary Air-conditioner Equipment
certification program, which is based on AHRI standard 210/240.
2Rated in accordance with AHRI standard 270.
3Calculated in accordance with Natl. Elec. Codes. Use only HACR circuit breakers or
fuses.
4Standard Air — Dry Coil — Outdoor
5This value approximate. For more precise value see unit nameplate.
6Max. linear length 60 ft.; Max. lift - Suction 60 ft.; Max lift - Liquid 60 ft.
For greater length consult refrigerant piping software Pub. No. 32-3312-0*
(* denotes latest revision).
7This value shown for compressor RLA on the unit nameplate and on this specification
sheet is used to compute minimum branch circuit ampacity and max. fuse size.The
value shown is the branch circuit selection current.
8No means no start components. Yes means quick start kit components. PTC means
positive temperature coefficient starter.
20’
30’
40’
50’
60’
3/4”
3/4”
3/4”
3/4”
3/4”
3/8”
3/8”
3/8”
3/8”
3/8”
3 oz.
9 oz.
14 oz.
20 oz.
26 oz.
Additional
Refrigerant
TUBING INFORMATION
Tubing
Length
Tubing Sizes
Liquid
Suction

2 4TTA3-SF4-1A
SCHEMATIC DIAGRAM

4TTA3-SF4-1A 3
WIRING DIAGRAM

4 4TTA3-SF4-1A
SUBCOOLING CHARGING IN COOLING ABOVE 55°F OD AMBIENT
The manufacturer has always recommended installing
matched indoor and outdoor systems.
All split systems are AHRI rated with only TXV indoor systems.
The benefits of installing approved indoor and outdoor split
systems are maximum efficiency, optimum performance and
the best overall system reliability.
The following charging methods are therefore prescribed for
systems with indoor TXVs.
1. Subcooling (in the cooling mode) is the only
recommended method of charging above 55°F ambient
temperatures.
2. For best results – the indoor temperature should be kept
between 70°F to 80°F. Add system heat if needed.
3. At startup, or whenever charge is removed or added, the
system must be operated for a minimum 20 minutes to
stabilize before accurate measurements can be made.
4. Measure Liquid Line Temperature and Refrigerant
Pressure at service valves.
5. Determine total refrigerant line length, and height (lift) if
indoor section is above the condenser.
6. Determine the Design Subcool Charging Temperature
from the unit nameplate.
7. Locate this value in the appropriate column of the
Subcooling Charging Table. Locate your liquid line
temperature in the left column of the table, and the
intersecting liquid line pressure under your nameplate
subcool value column. Add refrigerant to raise the
pressure to match the table, or remove refrigerant to
lower the pressure. Again, wait 20 minutes for the system
conditions to stabilize before adjusting charge again.
8. When system is correctly charged, you can refer to
System Pressure Tables (on page 7) to verify typical
performance.
8910 11 12 13 14
55 179 182 185 188 191 195 198
60 195 198 201 204 208 211 215
65 211 215 218 222 225 229 232
70 229 232 236 240 243 247 251
75 247 251 255 259 263 267 271
80 267 271 275 279 283 287 291
85 287 291 296 300 304 309 313
90 309 313 318 322 327 331 336
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
125 495 501 507 514 520 527 533
R-410A REFRIGERANT CHARGING CHART
Refer to Service Facts or
Installer's Guide for charging method.
LIQUID
TEMP
(
°
F)
DESIGN SUBCOOLING (
°
F)
LIQUID GAGE PRESSURE (PSI)
From Dwg. D154557P01 Rev. 2
3 Ton2 1/2 Ton
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FEET)
REFRIGERANT LINE LIFT (FEET)
10 20 25 30 40 60
Use Design Subcool Value
60
50
40
30
25
20
15
10
0
Add 5°
Add 4°
Add 2°
Add 3° of Subcooling
Add 1° of Subcooling
Add 4°
Add 3°
TOTAL REFRIGERANT LINE LENGTH (FEET)
REFRIGERANT LINE LIFT (FEET)
10 20 25 30 40 60
Add 2° of Subcooling
Add 1° of Subcooling
Use Design Subcool Value
60
50
40
30
25
20
15
10
0
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

4TTA3-SF4-1A 5
Is contactor
energized?
(contacts closed)
Is voltage
present at
contactor coil? Replace contactor
YES
NO
NO
Check for 24 volts AC
across contactor coil
Check control
transformer and
control fuse
Is the control
transformer
and fuse good?
NO
YES
Repair or replace
transformer or fuse.
Investigate cause for
failure (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 the room
thermostat
YES
Compressor fails to start
Contactor check
TROUBLESHOOTING
L2 L1
T2 T1
IN
OUT
L2 L1
T2 T1
Single Pole Contactor (MS)* Double Pole Contactor (MS)*
Contactor Coil
24 VAC
HIGH
VOLTAGE
IN
OUT
HIGH
VOLTAGE
*Refer to Wiring Diagram to determine if a single pole or double pole contactor is used.

6 4TTA3-SF4-1A
Check for open IOL
(Internal Overload)
Check resistance of
C to S and C to R
Does the
resistance check
show an open
circuit from C to S
or C to R?
YES Allow compressor
time to cool and
re-test
NO
Check for open
windings.
YES
Does a resistance check
show an open circuit
between R and S?
Replace the
compressor
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 capacitor
check good?
YES Replace the
compressor
NO
Replace start
components and/
or run capacitor
NO
Check wiring to
compressor
C, S and R
Check for high
voltage to contactor
Is high voltage present
at T1 and T2 ?
YES
NO
Check power
supply from
disconnect and/or
breaker panel.
Compressor won’t run
Contactor is closed
TROUBLESHOOTING

4TTA3-SF4-1A 7
PRESSURE TABLES FOR 4TTA30***4
4TXC****BC Cooling with Thermal Expansion Valve
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.
TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB
TEMPERATURE, OUTDOOR TEMPERATURE, LIQUID AND SUCTION PRESSURES. ON THE TABLE LOCATE OUTDOOR TEMPERATURE (1);
LOCATE INDOOR WET BULB (2); LOCATE MODEL OUTDOOR. (3); FIND INTERSECTION BETWEEN 1, 2, & 3 (4) FIND TARGET PRESSURE.
EXAMPLE: (1) OUTDOOR TEMP. 90 F.
(2) INDOOR WET BULB 67 F.
(3) OD 4TTA3042 ACTUAL:
(4) LIQUID PRESSURE IS 355 PSIG LIQUID PRESSURE SHOULD BE +/- 10 PSI OF CHART
(5) SUCTION PRESSURE IS 135 PSIG SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
Pressure Tables for 4TTA30***4
4TXC****BC3 cooling with Thermal expansion Valve
OD *** 30A 36B
42D
348D 60D
Coil **** B031 C037B042 C049 D061
115 480 495 500 500 495
110 455 470 470 470 465
105 430 440 440 455 440
100 400 410 410 415 410
95 375 385 385 385 435
90
1350 355
355
4360 355
85 325 335 330 335 330
80 305 315 305 315 310
75 285 295 285 295 285
70 265 275 270 275 265
65 250 255 245 255 245
60 230 235 230 240 225
OD *** 30A 36B
42D
348D 60D
Coil **** B031
C037
B042 C049 D061
71 159 156 152 157 154
67 150 147 142 148 144
63 141 137 132 138 134
59 133 127 122 129 124
71 152 149 145 150 148
67 144 140 135 141 138
63 135 131 126 133 129
59 127 122 116 124 120
71 147 145 140 146 144
67
2139 136
131
4137 135
63 131 127 122 129 126
59 123 117 113 120 116
71 145 143 138 145 142
67 137 135 129 136 133
63 129 126 120 128 124
59 121 117 111 119 114
71 142 141 136 143 140
67 134 132 127 134 130
63 127 123 118 126 121
59 119 114 109 117 112
71 139 138 134 140 136
67 132 130 125 132 128
63 124 121 116 123 119
59 116 112 108 115 110
110
100
90 1
80
70
60
Outdoor Size & Coil
Liquid Pressure (PSIG)
Outdoor Temperature (Degree F
Outdoor Size & Coil
Outdoor
Temp.
(Degree F)
Indoor Wet
Bulb
(Degree F)
Suction Pressure (PSIG)

REFRIGERANT CIRCUIT
PRINTED FROM D153258 REV. 0
01/13
The manufacturer has a policy of continuous product and product data improvement and it reserves the
right to change design and specifications without notice.