Trane ComfortLink 4TWZ0024A1000A User manual

4TWZ0024-SF-1C
ComfortLink™II System
Heat Pump
4TWZ0024A1000A
4TWZ0024A1000A
200/230/1/60
14
20
20
CLIMATUFF®
2 - 1
200/230/1/60
8.7 - 58
YES
YES
YES
PROPELLER
27.6 - 1
DIRECT - 2
3390/2270
1 - 1/3
759/493
200/230/1/60
2.80
SPINE FIN™
1 - 24
30.79
3/8
EEV
R-410A
10 LBS.- 1 OZ.
YES
5/8
3/8
See Charging Chart (page 3)
H X W X D
57.4 X 35.1 X 38.7
390
340
20’
30’
40’
50’
60’
70’
80’
5/8”
5/8”
5/8”
5/8”
5/8”
5/8”
5/8”
3/8”
3/8”
3/8”
3/8”
3/8”
3/8”
3/8”
3 oz.
8 oz.
14 oz.
20 oz.
25 oz.
31 oz.
37 oz.
© 2009 Trane
IMPORTANT — This document contains a wiring diagram, a parts list, and service information. This is customer prop-
erty and is to remain with this unit. Please return to service information pack upon completion of work.
PRODUCT SPECIFICATIONS
OUTDOOR UNIT 12
POWER CONNS. — V/PH/HZ 3
MIN. BRCH. CIR. AMPACITY
BR. CIR. MAX. (AMPS)
PROT. RTG. }MIN. (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(HIGH/LOW)
NO. MOTORS - HP
MOTOR R.P.M. (HIGH/LOW)
VOLTS/PH/HZ
F.L. AMPS
OUTDOOR COIL — TYPE
ROWS - F.P.I.
FACE AREA (SQ. FT.)
TUBE SIZE (IN.)
REFRIGERANT CONTROL
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.)
Service Facts
NOTICE: The manufacturer has a policy of continuous product and product data improvement
and reserves the right to change design and specifications without notice.
WARNING
!
THIS INFORMATION IS INTENDED FOR USE BY INDIVIDUALS POSSES-
SING ADEQUATE BACKGROUNDS OF ELECTRICAL AND MECHANICAL
EXPERIENCE. ANY ATTEMPT TO REPAIR A CENTRAL AIR CONDITION-
ING PRODUCT MAY RESULT IN PERSONAL INJURY AND OR PROPERTY
DAMAGE. THE MANUFACTURER OR SELLER CANNOT BE RESPON-
SIBLE 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
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/AB COMPRESSOR OIL.
TUBING INFORMATION
Tubing Sizes Tubing Additional
Suction Liquid Length Refrigerant
Tubing lengths in excess of eighty (80) feet see application software.
03/09
1Certified in accordance with the Air-Source Unitary Air-conditioner Equipment certi-
fication program, which is based on ARI standard 210/240. In order to achieve ARI
standard rating, the indoor fan time delay on the comfort control must be enabled.
2Rated in accordance with ARI 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 80 ft.; Max. lift - Suction 25 ft.; Max lift - Liquid 25 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.
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
!

4TWZ0024A1000A
SUBCOOL CHARGING TABLE CORRECTIONS FOR LINE LENGTH AND RISE
TOTAL REFRIGERANT LINE LENGTH (FEET)
REFRIGERANT LINE LIFT (FEET)
Dip Switch 1- ON
Dip Switch 2-ON
Max Lift
25
20
15
10
0
10 20 25 30 40 60 80
Dip Switch 3-ON
TOTAL REFRIGERANT LINE LENGTH (FEET)
REFRIGERANT LINE LIFT (FEET)
Max Lift
25
20
15
10
0
10 20 25 30 40 60 80
TABLE A TABLE B
These
matches
ONLY
4TXCB003 Coil Downflow & Horizontal Right Only
4TXCC006 Coil Downflow & Horizontal Right Only
4TEE3_03 Air Handler Downflow & Horizontal Left Only
All other approved, matched systems.
CHARGING METHOD
This model has ComfortLink™ II and Charge Assist™
features. Charge Assist™ can be used in cooling mode
only.
For complete instructions on using Charge Assist,™
please see page 4.
2
SCHEMATIC DIAGRAM
MANUAL CHARGING BELOW 55°F OD AMBIENT –
IN HEATING MODE (HP MODELS ONLY)
1. The only recommended method of charging at outdoor
ambients below 55°F, is to weigh in the charge in the heat-
ing mode.
2. Check liquid line temperature and pressure (at the OD
valves) to obtain a minimum of 10°F subcooling.
3. It is important to return in the spring or summer to accu-
rately charge the system in the cooling mode at outdoor
ambients from 55°F-120°F.

DWG. NO. 4TWZ0024-SF-1C
ONLY DIPSWITCH
1 ON
ONLY DIPSWITCH
2 ON
ONLY DIPSWITCH
3 ON
SEE TABLE A
PAGE 2 *
SEE TABLE A
PAGE 2
SEE TABLE B
PAGE 2 **
55 192 199 210
60 206 213 227
65 221 229 245
70 238 246 264
75 256 264 284
80 275 284 306
85 295 305 329
90 316 327 354
95 339 350 380
100 363 374 407
105 388 400 435
110 415 427 465
115 443 456 497
120 471 485 529
125 502 516 563
PRINTED FROM D155859P01 REV 4
** Data is based on 18.0° of subcooling at a 95° ambient
2 TON HP R410A REFRIGERANT CHARGING CHART
Liquid
Tem
p
(
°F
)
LIQUID GAGE PRESSURE (PSIG)
* Data is based on 9.5° of subcooling at a 95° ambient
3
WIRING DIAGRAM
MANUAL CHARGING OR CHARGE ASSISTTM METHOD IN
COOLING BETWEEN 55°F AND 120°F OD AMBIENT
It is recommended to install manufacturer approved matched indoor and
outdoor systems.
All approved split systems are ARI 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
matched systems with indoor TXVs.
1. Subcooling using the R-410A Refrigerant Charging Chart (in the cooling
mode) is the only recommended method of charging between 55°F and
120°F ambient temperatures.
2. When charging for ambient temperatures above 120°F, charge to 10°
subcooling. It is important to return when outdoor ambient temperature
is between 55°F and 120°F to verify system charge per these instruc-
tions.
3. For best results – the indoor temperature should be kept between 70°F
to 80°F. Add system heat if needed.
4. At startup, or whenever charge is removed or added, the system must
be operated for a minimum twenty (20) minutes to stabilize before
accurate measurements can be made. (Feature of Charge Assist™)
5. Measure Liquid Line Temperature and Refrigerant Pressure at service
valves. (Not required with Charge Assist.™)
6. Determine total refrigerant line length, and height (lift) if indoor section is above the condenser. Set dip switches on Charge Assist™ board as
indicated in the Subcool Charging Corrections Table on page 2 .
7. Locate your liquid line temperature in the left column of the table, and the intersecting liquid line gage pressure under the DIPSWITCH selection
column. Add refrigerant to raise the pressure to match the table, or remove refrigerant to lower the pressure. For manual charging, always wait twen-
ty (20) minutes for the system conditions to stabilize before adjusting charge again. (Not required with Charge Assist.™)
8. Charge Assist port is designed for liquid refrigerant charging.
9. When system is correctly charged, you can refer to System Pressure Curves (on page 8) to verify typical performance.

4
NOTE: On the Charge Assist™ control set the LINE LENGTH
DIP SWITCHES before running system or entering CA Mode.
See Subcool Charging Corrections Table on page 2.
The Communicating Comfort Control will auto-configure the
system size and airflow requirement at power-up. The Charge
Assist™ (CA) Mode will set the indoor blower to 100%, over-
ride any blower delays and run compressor 2nd stage. (Green
LEDs Y1 and Y2 will be on. The Green Status LED will be
turned off.)
Procedure
STEP 1:
Press MODE button (See Figure 2) for 2 seconds to enter
the CA mode. The CA control takes control of the system
and overrides the Communicating Comfort Control. The
Green STATUS LED is turned OFF. The CA control will
run the first stage compressor for one minute. Green LED
Y1 is on. The CA control will then run the second stage
compressor. Green LEDs Y1 and Y2 will then be ON. The
CA control now starts its Charge Assist™ mode. The CA
control will now check the operating Conditions before
continuing the CA Mode.
NOTE: To stop the CA mode at anytime, press the MODE
button. The CA control will then begin slowly flashing its
Green STATUS LED indicating that the CA control is now
in its normal operating mode.
Outdoor Temperature (ODT) Must be between 55°F and
120°F. If ODT is below 55°F or above 120°F, the ODT,
OUT OF RANGE, Red LED will flash ON and OFF for 30
seconds. This error condition causes the CHARGING
(STABILIZING) Amber LED to flash 10 times. The CA
control will then exit the CA mode and the Green Status
LED begins to flash slowly.
Liquid Line Temperature (Must be within range) If this
sensor is shorted or open - This error condition causes an
11 flash on FAULT LED.
Liquid Line Pressure (Must be above 90 psig) If the liquid
pressure is below 90 psig, the LOW PRESSURE Red LED
will turn on for 30 seconds. This error condition causes the
CA control to flash its CHARGING (STABILIZING) Amber
LED 10 times. The CA control will then exit the CA mode
and it then begins flashing its Green Status LED slowly.
STEP 2:
Enter Stabilization Routine The CHARGING (STABILIZ-
ING) Amber LED will begin to flash.
The CA control will then indicate the time it will take for the
refrigerant system to stabilize by flashing its CHARGING
(STABILIZING) Amber LED. (See SUMMARY on page 7
for flash rate details.)
The CA control may run the system for up to twenty min-
utes to insure the refrigerant system is at a steady operat-
ing state. Once the system is at a steady operating state
the CA control will enter the Charging Routine.
STEP 3:
Charge Assist™ (CA) Procedure with a Communicating Comfort Control
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
!
WARNING
!
Live Electrical Components!
During installation, testing, servicing and troubleshooting of
this product, it may be necessary to work with live electrical
components. Failure to follow all electrical safety precautions
when exposed to live electrical components could result in
death or serious injury.
2chargE assisttM
circuit board dEtail
1chargE assisttM
Port locatioN
liQuid
rEfrigEraNt

5
RECOVER Routine
If the CA control determines there is excessive refrigerant
in the system, the REC Red LED will be turned ON. The
CA control will lock the system off for one hour and it will
then exit the CA cycle. The REC Red LED will stay ON for
1 hour. The CA control lock out period can be stopped by
pressing the MODE button for 2 seconds. Status LED will
be off during lockout.
NOTE: Personality Module (PM) contains model specific
information needed for system operation - Do Not Re-
move.
NOTE: The word ‘Wait’will be displayed on the Commu-
nicating Comfort Control when the system is in the CA
mode. The Communicating Comfort Control does not
control the system operation when the system is running
in the CA Mode. Any changes in the Communicating
Comfort Control programming made during the CA mode
of operation will become effective after the CA mode ends.
NOTE: Charge Assist™ IS NOT allowed when a heat
pump is operating in the heating cycle. If the mode but-
ton is pressed during an active compressor heat call,
the CHARGING (STABILIZING) LED will flash 10 times
indicating that CA is not allowed. Once an active call for
compressor heat has ended, CA may be entered.
CAUTION: Minimum equipment off time is bypassed dur-
ing Charge Assist™. Avoid cycling compressor quickly.
Observe the recommended 5-minute minimum off time for
compressor protection.
CHARGING Routine
Charge Assist™ will follow one of the following routines.
STEP 4:
CHARGED Routine
IF the CA control determines the system is correctly
charged, the CHARGING (STABILIZING) Amber LED will
be turned OFF and the CHARGED Green LED will be
turned ON.
The CA control will then exit the charge assist cycle and
return the control of the system to the Communicating
Comfort Control. The Status Green LED will be slowly
flashing. The CHARGED Green LED will stay ON for 1
hour.
STEP 5:
ADD Routine If the CA control determines refrigerant
is required, the ADD Amber LED will turn ON and the
Green CHARGED LED will begin FLASHING according
to the CHARGED Green LED flash Rate Schedule.
(See SUMMARY on page 7 for flash rate details.)
NOTE: For Automated charging, use BAYCAKT001AA.
When utilizing a Charging accessory Solenoid Kit (BAY-
CAKT001-shown in Figure 3) refer to the instructions
in the kit (18-HH15D1-*) for proper hook up. When the
Amber ADD LED is ON the CA control board provides a
24 VAC power for the accessory solenoid. The CA control
will turn off the 24 VAC power when the Amber ADD LED
goes off.
When refrigerant is being added, the CA control will exit
the Charge Assist™ cycle if the liquid line pressure does
not increase by 4 psi in 50 minutes or if the liquid line
pressure does not get within the 20 psi of the required
charged pressure within 1 hour.
Note: For Manual Charging
Once sufficient charge has been added, the Amber ADD
LED will turn OFF and the Green CHARGED LED will be
turned ON. When the Amber ADD LED turns OFF; stop
adding refrigerant. The Green CHARGED LED will stay
on for 5 minutes while the unit runs. The CA control will
now exit the Charge Assist™ cycle and returns control to
the Communicating Comfort Control.
STEP 6:
3Charge Assist™ Solenoid Kit
BAYCAKT001
Use for Auto Charging
(See Installer’s Guide 18-HH15D1-*)
STABILIZING
LED
CHARGED
LED
ADD
LED
REC
LED
CHARGED
Routine
(See Step 4)
OFF ON OFF OFF
ADD
Routine
(See Step 5)
OFF Flashing ON OFF
RECOVER
Routine
(See Step 6)
OFF OFF OFF ON