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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 informa-
tion 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.
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.................................................................... 4
Section 4. Setting the Unit ..................................................................... 5
Section 5. Refrigerant Line Considerations ......................................... 5
Section 6. Refrigerant Line Routing ..................................................... 6
Section 7. Refrigerant Line Brazing ...................................................... 7
Section 8. Refrigerant Line Leak Check ............................................... 9
Section 9. Evacuation ............................................................................ 9
Section 10. Service Valves .................................................................. 10
Section 11. Electrical - Low Voltage ................................................... 10
Section 12. Electrical - High Voltage .................................................. 12
Section 13. Start Up.............................................................................. 12
Section 14. System Charge Adjustment............................................. 13
Section 15. Checkout Procedures and Troubleshooting .................. 17
Section 16. Refrigeration Circuits........................................................21
Installer's Guide
Condensing Units
4TTX6018-061
18-AC100D1-5D-EN
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Summary of Contents for Trane 4TTX6018J
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Page 1: Table Of Contents
18-AC100D1-5D-EN Installer’s Guide Condensing Units 4TTX6018–061 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 informa- tion 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. -
Page 2: Section 1. Safety
Section 1. Safety This information is intended for use by individuals LIVE ELECTRICAL COMPONENTS! possessing adequate backgrounds of electrical and During installation, testing, servicing, and trouble- mechanical experience. Any attempt to repair a central shooting of this product, it may be necessary to work air conditioning product may result in personal injury with live electrical components. -
Page 3: Section 2. Unit Location Considerations
Section 2. Unit Location Considerations 2.1 Unit Dimensions and Weight Table 2.1 Unit Dimensions and Weight Models H x D x W (in) Weight* (lb) 4TTX6018J 35 x 30 x 33 4TTX6024J 35 x 30 x 33 4TTX6030J 42 x 30 x 33 4TTX6035J... -
Page 4: Section 3. Unit Preparation
2.3 Suggested Locations for Best Reliability Ensure the top discharge area is unrestricted for Avoid Install Near Bedrooms at least five (5) feet above the unit. Three (3) feet clearance must be provided in Min 5’ Unrestricted front of the control box (access panels) and any other side requiring service. -
Page 5: Section 4. Setting The Unit
5.1 Refrigerant Line and Service Valve Connection Sizes Table 5.1 Line Sizes Service Valve Connection Sizes Vapor Liquid Vapor Line Liquid Line Model Line Line Connection Connection 4TTX6018J 4TTX6024J 4TTX6030J 4TTX6035J 4TTX6036J 4TTX6041J 4TTX6042J 4TTX6048J 4TTX6049J 4TTX6060J 1-1/8 4TTX6060K 1-1/8... -
Page 6: Section 6. Refrigerant Line Routing
5.4 Refrigerant Line Insulation Important: The Vapor Line must always be Vapor Line Liquid Line insulated. DO NOT allow the Liquid Line and Insulation Vapor Line to come in direct (metal to metal) contact. 5.5 Reuse Existing Refrigerant Lines CAUTION If using existing refrigerant lines make certain that all joints are brazed, not soldered. -
Page 7: Section 7. Refrigerant Line Brazing
8 Feet Maximum Wall Isolator Line Set 8 Feet Maximum Side View 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 Ductwork... - Page 8 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 nitro- gen purge.
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Page 9: Section 8. Refrigerant Line Leak Check
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 150 PSIG evaporator coil to 150 PSIG using dry nitrogen. STEP 2 - Check for leaks by using a soapy solu- tion or bubbles at each brazed location. -
Page 10: Section 10. Service Valves
STEP 2 - Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 500 microns in one (1) minute. 1 MIN. Once evacuation is complete blank off the vacuum pump and micron gauge, and close the valves on the manifold gauge set. - Page 11 11.2 Low Voltage Hook-up Diagrams With TEM 3, 4, 6, 8 With TAM 4, 7, 9 Outdoor Outdoor Thermostat Air Handler Thermostat Air Handler Unit Unit 24 VAC HOT 24 VAC HOT 24 VAC 24 VAC Common Common Blue Blue COOL/HEAT COOL/HEAT 1st STAGE...
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Page 12: Section 12. Electrical - High Voltage
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 nec- essary to work with live electrical components. Failure to follow all electrical safety precau- tions when exposed to live electrical compo- nents could result in death or serious injury. -
Page 13: Section 14. System Charge Adjustment
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 acces- sory is used and the Outdoor Ambient is below 60 MIN. - Page 14 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 STEP 2 - Determine the final subcooling value using total Line Length and Lift measured in STEP 1 and the charts below. 018 Units 024 Units SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
- Page 15 STEP 3 - Stabilize the system by operating for a minimum of 20 minutes. At startup, or whenever charge is removed or 20 MIN. added, the system must be operated for a mini- mum of 20 minutes to stabilize before accurate measurements can be made.
- Page 16 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.
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Page 17: Section 15. Checkout Procedures And Troubleshooting
14.3 Weigh-In Method for Charging Weigh-In Method can be used for the initial installation, or anytime a system charge is being replaced. Weigh-In Method can also be used when power is not available to the equipment site or operating conditions (indoor/out- door temperatures) are not in range to verify with the subcooling charging method. - Page 18 15.2 Troubleshooting 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 &...
- Page 19 TROUBLESHOOTING Compressor fails to start Contactor check Is contactor engergized? Go To: Compressor won’t run (contacts closed) Wait 3 minutes and check contactor Check for 24 volts AC coil again across contactor coil Is voltage If applicable, is TDR present at input voltage Replace contactor contactor coil?
- Page 20 TROUBLESHOOTING Compressor won’t run Contactor is closed Check for high voltage to contactor Check for open IOL Is high voltage present (Internal Overload) at T1 and T2 ? Check resistance of C to S and C to R Does the Check power resistance check Allow compressor...
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Page 21: Section 16. Refrigeration Circuits
Section 16. Refrigeration Circuits 6018, 6024 & 6035 Models PRINTED FROM D157394P01 6030, 6036 & 6041 Models PRINTED FROM D158514P01 18-AC100D1-5D-EN... - Page 22 6042 & 6048 Models PRINTED FROM D157878 Printed from D157878 6049 & 6060 Models PRINTED FROM D159175 18-AC100D1-5D-EN...
- Page 23 6061 Models LINE D AMPENER ( SEE NO TE 1) PRINTED FROM D156708 18-AC100D1-5D-EN...
- Page 24 The AHRI Certified mark indicates Trane U.S. Inc. participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org. Trane has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.
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Questions and answers
My Trane AC 4TTX6018-061 showed an LRA of 62 when it was started up by the technician. I was told the normal LRA is 52. The start up was done when the outside temperature was below 55 degrees. I was told I need a start assist device.