18-AC89D1-1

Installer’s Guide

Condensing Units

4TTB3018–060

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES

IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.

These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with the installation. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter should be referred to your installing dealer or local distributor.

Note: The manufacturer recommends installing only approved matched indoor and outdoor systems. All of the manufacture’s split systems are A.H.R.I. rated only with TXV/EEV indoor systems. Some of the benefits of installing approved matched indoor and outdoor split systems are maximum efficiency, optimum performance and the best overall system reliability.

Table of Contents

Section 1. Safety ..................................................................................... 2

Section 2. Unit Location Considerations.............................................. 3

Section 3. Unit Preparation .................................................................... 5

Section 4. Setting the Unit ..................................................................... 5

Section 5. Refrigerant Line Considerations ......................................... 6

Section 6. Refrigerant Line Routing ..................................................... 7

Section 7. Refrigerant Line Brazing ...................................................... 8

Section 8. Refrigerant Line Leak Check ............................................. 10

Section 9. Evacuation ........................................................................... 11

Section 10. Service Valves ................................................................... 11

Section 11. Electrical - Low Voltage .................................................... 13

Section 12. Electrical - High Voltage ................................................... 16

Section 13. Start Up .............................................................................. 17

Section 14. System Charge Adjustment ............................................. 18

Section 15. Checkout Procedures and Troubleshooting ................... 22

Section 1. Safety

▲

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 manufacture or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

▲

WARNING

These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Use only

R-410A approved service equipment. Refrigerant cylinders are painted a “Rose” color to indicate the type of refrigerant and may contain a “dip” tube to allow for charging of liquid refrigerant into the system. All R-410A systems use a POE oil that readily absorbs moisture from the atmosphere. To limit this

“hygroscopic” action, the system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement. For specific handling concerns with R-410A and POE oil reference Retrofit

Bulletins SS-APG006-EN and APP-APG011-EN or

APP-APG012-EN.

▲

WARNING

UNIT CONTAINS R-410A REFRIGERANT!

R-410A operating pressures exceed 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 AP-

PROVED POE COMPRESSOR OIL.

▲

WARNING

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 is required. Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and /or property damage.

▲

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.

▲

CAUTION

If using existing refrigerant lines make certain that all joints are brazed, not soldered.

▲

CAUTION

Scroll compressor dome temperatures may be hot. Do not touch the top of compressor; it may cause minor to severe burning.

2 18-AC89D1-1

Section 2. Unit Location Considerations

2.1 Unit Dimensions and Weight

Table 2.1

Unit Dimensions and Weight

Models

4TTB3018E

4TTB3024E

4TTB3030D

4TTB3036D

4TTB3042D

4TTB3048D

4TTB3060D

H x D x W (in)

29 x 30 x 33

29 x 30 x 33

29 x 30 x 33

33 x 30 x 33

29 x 34 x 37

29 x 34 x 37

37 x 34 x 37

* Weight values are estimated.

Weight* (lb)

153

156

173

190

196

203

226

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 vibration transmission to the building structure.

2.2 Refrigerant Piping Limits

1. The maximum length of refrigerant lines from outdoor to indoor unit should NOT exceed sixty (60) feet.

2. The maximum vertical change should not exceed sixty (60) feet.

3. Service valve connection diameters are shown in Table 5.1.

Note: For line lengths greater than sixty (60) feet, Refer to Refrigerant Piping Application

Guide, SS-APG006-EN or Refrigerant Piping

Software Program, 32-3312-03 (or latest revision).

Standard

Line Set

60’ Max

Line Length

60’

Max

Vertical

Change

60’

Max

Vertical

Change

D

W

H

18-AC89D1-1 3

2.3 Suggested Locations for Best Reliability

Ensure the top discharge area is unrestricted for at least five (5) feet above the unit.

Three (3) feet clearance must be provided in front of the control box (access panels) and any other side requiring service.

Do not locate close to bedrooms as operational sounds may be objectionable.

Avoid Install

Near Bedrooms

Min. 12” to

Shrubbery

Min 5’ Unrestricted

Min 3’

Unrestricted

Access Panel

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 roof runoff water from pouring directly on the unit.

Min. 12” to

Shrubbery

Min. 12” to Wall

2.4 Coastal Considerations

If installed within one mile of salt water, including seacoasts and inland waterways, models without factory supplied Seacoast Salt Shields require the addition of BAYSEAC001 (Seacoast Kit) at installation time.

4 18-AC89D1-1

Section 3. Unit Preparation

3.1 Prepare The Unit For Installation

STEP 1 - Check for damage and report promptly to the carrier any damage found to the unit.

STEP 2 - To remove the unit from the pallet, remove tabs by cutting with a sharp tool.

Section 4. Setting the Unit

4.1 Pad Installation

When installing the unit on a support pad, such as a concrete slab, consider the following:

• The pad should be at least 1” larger than the unit on all sides.

• The pad must be separate from any structure.

• The pad must be level.

• The pad should be high enough above grade to allow for drainage.

• The pad location must comply with National,

State, and Local codes.

18-AC89D1-1 5

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes

Table 5.1

Model

4TTB3018E

4TTB3024E

4TTB3030D

4TTB3036D

4TTB3042D

4TTB3048D

4TTB3060D

Line Sizes

Vapor

Line

Liquid

Line

5/8

5/8

3/4

3/4

3/8

3/8

3/8

3/8

3/4

7/8

7/8

3/8

3/8

3/8

Service Valve Connection Sizes

Vapor Line

Connection

Liquid Line

Connection

5/8

5/8

3/4

3/4

3/8

3/8

3/8

3/8

3/4

7/8

7/8

3/8

3/8

3/8

5.2 Factory Charge

Trane outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit, fifteen (15) feet of tested connecting line, and the smallest indoor evaporative coil match.

If connecting line length exceeds fifteen (15) feet and/or a larger indoor evaporative coil is installed, then final refrigerant charge adjustment is necessary.

5.3 Required Refrigerant Line Length

Determine required line length and lift. You will need this later in STEP 2 of Section 14.

Total Line Length = __________ Ft.

Total Vertical Change (lift) = __________ Ft.

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.

Line Length

Liquid Line

Vapor Line

Insulation

6 18-AC89D1-1

5.5 Reuse Existing Refrigerant Lines

▲

CAUTION

If using existing refrigerant lines make certain that all joints are brazed, not soldered.

For retrofit applications, where the existing indoor evaporator coil and/or refrigerant lines will be used, the following precautions should be taken:

• Ensure that the indoor evaporator coil and refrigerant lines are the correct size.

• Ensure that the refrigerant lines are free of leaks, acid, and oil.

Important: For more information see publication number SS-APG006-EN.

Section 6. Refrigerant Line Routing

6.1 Precautions

Important: Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.

Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or other structural elements.

For Example:

• When the refrigerant lines have to be fastened to floor joists or other framing in a structure, use isolation type hangers.

• Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings.

• Where the refrigerant lines run through a wall or sill, they should be insulated and isolated.

• Isolate the lines from all ductwork.

• Minimize the number of 90º turns.

8 Feet Maximum

Joist/Rafter

Isolator

18-AC89D1-1

Side View

8 Feet Maximum

Secure Vapor line from joists using isolators every 8 ft. Secure

Liquid Line directly to Vapor line using tape, wire, or other appropriate method every 8 ft.

Isolation From Joist/Rafter

Line Set

7

8 Feet Maximum

Wall

Isolator

Line Set

Side View

8 Feet Maximum

Secure Vapor Line using isolators every 8 ft. Secure Liquid Line directly to Vapor Line using tape, wire, or other appropriate method every 8 ft.

Isolation In Wall Spaces

Wall

Sealant

Insulation

Vapor Line

Isolation Through Wall

Section 7. Refrigerant Line Brazing

7.1 Braze The Refrigerant Lines

STEP 1 - Remove caps or plugs. Use a deburing tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth.

Ductwork

Isolator

DO NOT hang line sets from ductwork

Line Set

8 18-AC89D1-1

STEP 2 - Remove the pressure tap cap and valve cores from both service valves.

STEP 3 - Purge the refrigerant lines and indoor coil with dry nitrogen.

STEP 4 - Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge.

Braze the refrigerant lines to the service 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: Precautions should be taken to avoid heat damage to basepan during brazing. It is recommended to keep the flame directly off of the basepane.

18-AC89D1-1 9

STEP 5 - Replace the pressure tap valve cores after the service valves have cooled.

Section 8. Refrigerant Line Leak Check

8.1 Check For Leaks

STEP 1 - Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen.

150 PSIG

STEP 2 - Check for leaks by using a soapy solution or bubbles at each brazed location.

Remove nitrogren pressure and repair any leaks before continuing.

10 18-AC89D1-1

Section 9. Evacuation

9.1 Evacuate the Refrigerant Lines and Indoor Coil

Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete.

STEP 1 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.

STEP 2 - Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 500 microns in one (1) minute.

Once evacuation is complete blank off the vacuum pump and micron gauge, and close the valves on the manifold gauge set.

0350

Microns

ON OFF

1 MIN.

Section 10. Service Valves

10.1 Open the Gas Service Valve

Important: Leak check and evacuation must be completed before opening the service valves.

NOTE: Do not vent refrigerant gases into the atmosphere

STEP 1 - Remove valve stem cap.

STEP 2 - Using an adjustable wrench, turn valve stem 1/4 turn counterclockwise to the fully open position.

STEP 3 - Replace the valve stem cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

CAP

1/4 TURN ONLY

COUNTERCLOCKWISE

FOR FULL OPEN

POSITION

VALVE STEM

UNIT SIDE

OF VALVE

PRESSURE TAP PORT

GAS LINE CONNECTION

18-AC89D1-1 11

10.1 Open the Liquid Service Valve

▲

WARNING

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 is required.

Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and /or property damage.

Important: Leak check and evacuation must be completed before opening the service valves.

STEP 1 - Remove service valve cap.

STEP 2 - Fully insert 3/16” hex wrench into the stem and back out counterclockwise until valve stem just touches the rolled edge (approximately five (5) turns.)

STEP 3 - Replace the valve cap to prevent leaks.

Tighten finger tight plus an additional 1/6 turn.

Cap

Unit Side of Service

Valve

3/16” Hex Wrench

Rolled Edge to

Captivate Stem

Hex Headed

Valve System

Service Port

Section 11. Electrical - Low Voltage

11.1 Low Voltage Maximum Wire Length

Table 11.1 defines the maximum total length of low voltage wiring from the outdoor unit, to the indoor unit, and to the thermostat.

WIRE SIZE

18 AWG

16 AWG

14 AWG

Table 11.1

24 VOLTS

MAX. WIRE LENGTH

150 Ft.

225 Ft.

300 Ft.

12 18-AC89D1-1

11.2 Low Voltage Hook-up Diagrams

Air Handler

Hook-up Diagram

Air Conditioner

Neatly bundle all low voltage wires as shown.

Comfort Control

R

Y1

G

W1

W2

B

Red

Yellow

Green

White

Black

Blue

Air Handler

R

Y

LO

Y

BK

G

W1

W2

W3

B

Yellow

Blue

Yellow

Blue

Notes:

1. If electric heat does not have 3rd contactor (CH), connect a jumper wire from W3 to W2. If electric heat does not have 2nd contactor (BH), connect a jumper wire from W2 to

W1.

2. Ylo and BK may not be present on unit.

Variable Speed Furnace

Hook-up Diagram

Air Conditioner

Neatly bundle all low voltage wires as shown.

Comfort Control

R

Y1

G

W1

W2

B

Red

Yellow

Green

White

Black

Blue

Variable Speed

Furnace

R

BK

Y

Y

G

LO

W1

W2

B

O

Yellow

Blue

Yellow

Blue

18-AC89D1-1

Notes:

1. If single stage heating thermostat is used, jumper

W1-W2 on furnace terminal strip.

13

Communicating Indoor Unit with 24 V Control Hook-up

Diagram

Air Conditioner

Neatly bundle all low voltage wires as shown.

Comfort Control

R

Y1

G

W1

W2

B

Red

Yellow

Green

White

Black

Blue

Comm. Variable Speed

Furnace or Air Handler

R

BK

D

Y1

Y2

G

W1

W2

W3

B

O

Yellow

Blue

Yellow

Blue

Notes:

1. See User Interface setup menu for 24 VAC control mode and cooling CFM options.

2. W3 terminal may not be present on unit.

3. If single stage heating thermostat is used, jumper

W1-W2 on furnace terminal strip.

Communicating Indoor Unit in Comm. Mode

Hook-up Diagram

Air Conditioner

Neatly bundle all low voltage wires as shown.

Communicating

Comfort Control

(*CONT900)

D

R

B

Brown

Red

Blue

Comm. Variable Speed

Furnace or Air Handler

D

R

BK

Y1

Y2

G

W1

W2

W3

B

O

Yellow

Blue

Yellow

Blue

Notes:

1. See User Interface setup menu for cooling

CFM options.

2. W3 terminal may not be present on unit.

14 18-AC89D1-1

*AM7 Air Handler

Hook-up Diagram

Air Conditioner

Neatly bundle all low voltage wires as shown.

Comfort Control

W

G

Y1

O

R

B

Y2

Field wiring

White

Green

Yellow

Red

Blue

Air Handler

W3

W2

W1

G

YI (In)

O

R

B

YO

(Out)

Y2

DH/BK

B - Blue

Y1 - Yellow

Blue

Yellow

Must configure to

“ON” for AC Units.

Must configure to “OFF” for single-stage compressors.

1

R1

U1

R4

Control Board on

HP

1

1

}

Capacity (Tons)

AC (System)

2 (Stages)

2 (Compressor)

S1

R NET 1

R NET 2

CFM/Ton

}

Cool Off Delay

}

INDOOR

on

R13

R14

D9

Torque

C10

R22

S2

+12V

CFM

*AM4 and GAM5 Air Handler

Hook-up Diagram

Comfort Control

White

Green

Yellow

Orange

Red

Blue

W

G

Y

O

R

B

White

Green

Yellow

Red

Blue

Field wiring

18-AC89D1-1

Air Handler

W3

W2

W1

G

YI (In)

O **

R **

B

YO (Out)

B - Blue

Y - Yellow

Air Conditioner

Neatly bundle all low voltage wires as shown.

Blue Yellow

1. * For multiple stages of electric heat, jumper W1,

W2, and W3 together if comfort control has only one stage of heat.

2. ** R to O jumper must be in place as shown for cooling only, non-heat pump systems for proper operation.

3. Yi and Yo connections must be made as shown for freeze protection and internally mounted condensate overflow circuits to work properly.

4. Internally mounted condensate switch is optional and must be ordered separately.

5. If 3rd party condensate overflow switches are installed, they should be wired in series between

YO and Y to the outdoor unit.

15

Section 12. Electrical - High Voltage

12.1 High Voltage Power Supply

▲

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.

The high voltage power supply must agree with the equipment nameplate.

Power wiring must comply with national, state, and local codes.

Follow instructions on unit wiring diagram located on the inside of the control box cover and in the

Service Facts document included with the unit.

12.2 High Voltage Disconnect Switch

Install a separate disconnect switch at the outdoor unit.

For high voltage connections, flexible electrical conduit is recommended whenever vibration transmission may create a noise problem within the structure.

12.3 High Voltage Ground

Ground the outdoor unit per national, state, and local code requirements.

16 18-AC89D1-1

Section 13. Start Up

13.1 System Start Up

STEP 1 - Ensure Sections 7 through 12 have been completed.

STEP 2 - Set System Thermostat to OFF.

STEP 3 - Turn on disconnect(s) to apply power to the indoor and outdoor units.

STEP 4 - Wait one (1) hour before starting the unit if compressor crankcase heater accessory is used and the Outdoor Ambient is below

70ºF.

STEP 5 - Set system thermostat to ON.

DONE

OFF

CANCEL

ON

OFF

60 MIN.

DONE

ON

CANCEL

18-AC89D1-1 17

Section 14. System Charge Adjustment

14.1 Temperature Measurements

STEP 1 - Check the outdoor temperatures.

Subcooling (in cooling mode) is the only recommended method of charging above 55º F ambient outdoor temperature.

For best results the indoor temperature should be kept between 70º F to 80º F.

Note: It is important to return in the spring or summer to accurately charge the system in the cooling mode when outdoor ambient temperature is above 55º F.

14.2 Subcooling Charging in Cooling (Above 55º F Outdoor Temp.)

STEP 1 - Use the refrigerant line total length and lift measurements from Section 5.3.

Total Line Length = __________ Ft.

Vertical Change (Lift) = __________ Ft.

LIFT

120º F

55º F

Outdoor Temp

80º F

70º F

Indoor Temp

18 18-AC89D1-1

STEP 2 - Determine the final subcooling value using total Line Length and Lift measured in STEP 1 and the charts below.

1.5 Ton Subcooling Charging Table

SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

60

50

40

30

25

20

15

10

0 10 20 25

Add 2º

Add 1º

Use Design Subcool Value (8º)

30 40

TOTAL REFRIGERANT LINE LENGTH (FEET)

60

Add 5º

Add 4º

Add 3º

Add 2º

80

2 and 3 Ton Subcooling Charging Table

SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

60

50

40

30

25

20

15

10

0 10 20 25

Add 1º

Add 3º

Add 2º

Use Design Subcool Value (10º)

30 40

TOTAL REFRIGERANT LINE LENGTH (FEET)

60 80

2.5 Ton Subcooling Charging Table

SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

60

50

40

30

25

20

15

10

0 10 20 25

Use Design Subcool Value (10º)

30 40

TOTAL REFRIGERANT LINE LENGTH (FEET)

60

Add 3º

Add 2º

Add 1º

80

3.5 Ton Subcooling Charging Table

SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

60

50

40

30

25

20

15

10

0 10 20 25 30 40

Add 3º

Add 1º

Add 2º

Use Design Subcool Value (10º)

TOTAL REFRIGERANT LINE LENGTH (FEET)

60

Add 4º

Add 3º

Add 2º

Add 1º

80

4 Ton Subcooling Charging Table

SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

60

50

40

30

25

20

15

10

0 10 20 25

Add 1º

Use Design Subcool Value (10º)

30

Add 3º

40

TOTAL REFRIGERANT LINE LENGTH (FEET)

Add 6º

Add 5º

Add 4º

Add 2º

60

Add 7º

Add 6º

Add 5º

Add 3º

80

5 Ton Subcooling Charging Table

SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

60

50

40

30

25

20

15

10

0 10 20

Use Design Subcool Value (10º)

25 30

Add 2º

Add 1º

40

TOTAL REFRIGERANT LINE LENGTH (FEET)

Add 5º

Add 4º

Add 3º

Add 2º

Add 1º

60

Add 6º

Add 5º

Add 4º

Add 3º

Add 2º

Add 1º

80

Design Subcooling Value = __________º F

(from nameplate or Service Facts)

Subcooling Correction = __________º F

Final Subcooling Value = __________º F

STEP 3 - Stabilize the system by operating for a minimum of 20 minutes.

At startup, or whenever charge is removed or added, the system must be operated for a minimum of 20 minutes to stabilize before accurate measurements can be made.

18-AC89D1-1

20 MIN.

19

STEP 4 - Measure the liquid line temperature and pressure at the outdoor unit’s service valve.

Measured Liquid Line Temp = __________ º F

Liquid Gage Pressure = __________ PSI

Final Subcooling Value = __________ º F

107 °F

STEP 5 - Use the final subcooling value, refrigerant temperature and pressure from STEP 4, to determine the proper liquid gage pressure using

Table 14.2.

Example: Assume a 12º F Final Subcooling value and liquid temp of 90º F.

1. Locate 12º F Final Subcooling in Table 14.2.

2. Locate the Liquid Temperarature (90º F) in the left column.

3. The Liquid Gage Pressure should be approximately 327 PSI. (This is the shown as the intersection of the Final Subcooling column and the Liquid Temperature row.

90

95

100

105

110

115

120

125

75

80

85

55

60

65

70

Table 14.2

(

°

R-410A REFRIGERANT CHARGING CHART

LIQUID

TEMP

F)

FINAL SUBCOOLING (

°

F)

8 9 10 11 12 13 14

LIQUID GAGE PRESSURE (PSI)

179 182 185 188 191 195 198

195 198 201 204 208 211 215

211 215 218 222 225 229 232

229 232 236 240 243 247 251

247 251 255 259 263 267 271

267 271 275 279 283 287 291

287 291 296 300 304 309 313

309 313 318 322 327 331 336

331 336 341 346 351 355 360

355 360 365 370 376 381 386

381 386 391 396 402 407 413

407 413 418 424 429 435 441

435 441 446 452 458 464 470

464 470 476 482 488 495 501

495 501 507 514 520 527 533

From Dwg. D154557P01 Rev. 3

20 18-AC89D1-1

STEP 6 - Adjust refrigerant level to attain proper gage pressure.

Add refrigerant if the Liquid Gage Pressure is lower than the chart value.

1. Connect gages to refrigerant bottle and unit as illustrated.

2. Purge all hoses.

3. Open bottle.

4. Stop adding refrigerant when liquid line temperature and Liquid Gage

Pressure matches the charging chart

Final Subcooling value.

Recover refrigerant if the Liquid Gage Pressure is higher than the chart value.

STEP 7 - Stabilize the system.

1. Wait 20 minutes for the system condition to stabilize between adjustments.

Note: When the Liquid Line Temperature and

Gage Pressure approximately match the chart, the system is properly charged.

2. Remove gages.

3. Replace service port caps to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

STEP 8 - Verify typical performance.

Refer to System Pressure Tables in the Service

Facts to verify typical performance.

18-AC89D1-1

20 MIN.

(Example only - see Service Facts)

OD **

Coil ****

85

80

75

70

65

60

115

110

105

100

95

901

18

A018

24

B025

Outdoor Size & Coil

30 36

42 3

B031 B036 C043

Liquid Pressure (PSIG)

490 495 495

455

435

405

380

355

330

310

285

270

250

230

460

440

410

380

355

335

310

290

270

250

230

465

435

405

380

355 4

330

305

290

255

245

230

48

C049

495

460

435

405

380

350

330

305

285

265

245

230

60

D064

505

475

450

420

390

365

340

320

295

280

255

235

OD **

Coil ****

Outdoor Temp.

(Degree F)

Indoor Wet Bulb

(Degree F)

110

100

90 1

80

70

60

71

67 2

63

59

71

67

63

59

71

67

63

59

71

67

63

59

71

67

63

59

71

67

63

59

18

A018

24

B025

Outdoor Size & Coil

30

B031

36

B036

42 3

C043

48

C049

60

D064

Suction Pressure (PSIG)

144

135

127

119

141

132

124

116

152

143

135

126

147

139

130

122

138

129

121

113

134

126

118

110

145

136

127

119

141

133

125

117

153

144

135

127

148

140

131

123

138

130

122

114

135

127

119

110

144

135 4

126

117

141

132

123

115

152

142

133

124

147

138

129

121

138

129

121

112

135

126

118

110

145

136

128

120

142

129

125

117

153

145

136

128

149

140

131

123

138

130

122

114

135

127

119

112

142

132

124

116

138

129

121

113

150

141

132

124

146

136

128

119

135

126

118

110

132

123

115

107

21

STEP 9 - Record System Information for reference.

Record system pressures and temperatures after charging is complete.

Outdoor model number = _________________

Measured Outdoor Ambient = __________ º F

Measured Indoor Ambient = __________ º F

Measured Liquid Line Temp = __________ º F

Measured Suction Line Temp = __________ º F

Liquid Gage Pressure = __________ PSI

Suction Gage Pressure = __________ PSI

Section 15. Checkout Procedures and Troubleshooting

15.1 Operational And Checkout Procedures

Final phases of this installation are the unit Operational and Checkout Procedures. To obtain proper performance, all units must be operated and charge adjustments made.

Important: Perform a final unit inspection to be sure that factory tubing has not shifted during shipment. Adjust tubing if necessary so tubes do not rub against each other when the unit runs. Also be sure that wiring connections are tight and properly secured.

CHECKOUT PROCEDURE

After installation has been completed, it is recommended that the entire system be checked against the following list:

1. Leak check refrigerant lines. ........................................ [ ]

2. Properly insulate suction lines and fittings. ................... [ ]

3. Properly secure and isolate all refrigerant lines. ........... [ ]

4. Seal passages through masonry.

If mortar is used, prevent mortar from coming into direct contact with copper tubing. .......................... [ ]

5. Verify that all electrical connections are tight. ............... [ ]

6. Observe outdoor fan during on cycle for clearance and smooth operation. .................................................. [ ]

7. Be sure that indoor coil drain line drains freely. Pour water into drain pan. ............................................................... [ ]

8. Be sure that supply registers and return grilles are open and unobstructed. ......................................................... [ ]

9. Be sure that a return air filter is installed. ..................... [ ]

10. Be sure that the correct airflow setting is used.

(Indoor blower motor) ................................................... [ ]

11. Operate complete system in each mode to ensure safe operation. .................................................. [ ]

22 18-AC89D1-1

15.2 Troubleshooting

SYSTEM FAULTS

W

HA

T T

O

CH

EC

K M

PO

W

HIG

H V

OD

E

ER

S

OLT

AG

CO

UP

PLY

E W

MP

RE

CO

IRIN

G

SS

OR

RU

N C

IO

L

APA

CIT

OR

STA

RT

C

APA

STA

RT

CIT

OR

NTA

CT

OR

R

EL

C

LO

W

CO

NT

VO

LTA

RO

AY

ON

TAC

TS

GE

W

IRIN

L T

RA

NS

FO

G

TH

ER

RM

ER

CO

NTA

MO

LO

STA

T

W

CT

OR

C

VO

LTA

ST

UC

K C

OM

OIL

GE

FU

SE

INE

FF

PR

ES

ICIE

SO

RE

F. U

R

NT

C

ND

OM

P.

ER

CH

RE

F. O

AR

GE

VE

RC

EX

CE

SS

IVE

E

NO

HA

RG

E

VA

P. L

NC

ON

OA

D

DE

NS

RE

S.

O.D

. A

O.D

IR

RE

TX

V/E

AB

LE

S

. A

IRF

CIR

LO

W

CU

LAT

EV

S

TU

CK

IO

N

SU

RE

S.

RE

F. C

O

PE

N

PE

RH

EAT

I.D

. A

IR.

IRF

LO

W

RE

ST

RIC

TIO

SO

V C

SO

V L

NS

CH

OIL

D

EA

KIN

G

*

EC

K V

EF

EC

ALV

DE

FR

OS

TIV

E

E L

EA

DE

FR

OS

T R

EL

KIN

G

T C

ON

AY

D

EF.

TR

OL

D

EF.

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

C

H

C

H

C

H

C

H

C

H

C

H

C

H

C

H

S

S

S

S

S

S

P

P

P

P

P

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

C

H

C

H

C

H

C

H

C

H

C

H

P

P

P

P

P

P

P

P

P

P

P

P

P

P

S

S

S

S

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

S

S

P

P

P

P

S

S

S

S

P

P

P

P

S

S

P

P

P

P

P

P

S

S

DEFROST

Unit Won’t Initiate Defrost

Defrost Terminates on Time

Unit Icing Up

C

H

C

H

C

H

P

P

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

P

P

P

P

P

P

P

P

P

P

P

P

P

P

S

S

S

S

S

S

S

P

S

S

S

S

S

S

S

*

- 3 Phase Only

S

S

S

S

S

S

S

P

P

S

S

S

S

S

S

S

S

S

S

S

S

S

S

P

P

P

P

P

P

S

S

S

S

S

S

S

S

S

P

P

S

S

S

S

S

S

S

S

S

S

P

P

P

P

P

S

S

P

P

P P

P

P

18-AC89D1-1 23

The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice.

Representative-only illustrations included in this document.

24

© 2011 Trane U.S.,Inc. 07/11

18-AC89D1-1