Table of Contents
Advertisement
Quick Links
- 1 Table of Contents
- 2 Section 2. Unit Location Considerations
- 3 Section 5. Refrigerant Line Considerations
- 4 Section 11. Electrical - Low Voltage
- 5 Section 12. Electrical - High Voltage
- 6 Section 14. System Charge Adjustment
- 7 Section 15. Checkout Procedures and Troubleshooting
- 8 Troubleshooting
- Download this manual
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.
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
Installer's Guide
Condensing Units
4TTX5018A-060A, 049E
18-AC74D1-4
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Trane 4TTX5018A1000A
Summary of Contents for Trane 4TTX5018A1000A
-
Page 1: Table Of Contents
18-AC74D1-4 Installer’s Guide Condensing Units 4TTX5018A–060A, 049E 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 WARNING WARNING ▲ ▲ LIVE ELECTRICAL COMPONENTS! This information is intended for use by individuals During installation, testing, servicing, and trouble- possessing adequate backgrounds of electrical and shooting of this product, it may be necessary to work mechanical experience. -
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) 4TTX5018A1000A 41 x 34 x 37 4TTX5024A1000A 41 x 34 x 37 4TTX5030A1000A 41 x 34 x 37 4TTX5036A1000A... - Page 4 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. Please refer to Application Guide SS-APB006-EN: Trane - Sea Coast Applications and Seascoast Corrosion Protection Bulletin UN-SVB11A-EN.
-
Page 5: Section 3. Unit Preparation
Section 3. Unit Preparation 3.1 Prepare The Unit For Installation STEP 1 - Check for damage and report prompt- ly 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. -
Page 6: Section 5. Refrigerant Line Considerations
4TTX5060A1000A 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. -
Page 7: Section 6. Refrigerant Line Routing
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: •... -
Page 8: 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 9 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.
-
Page 10: 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 PSI 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 11: Section 9. Evacuation
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. 0350 Microns STEP 1 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump. -
Page 12: Section 11. Electrical - Low Voltage
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. Unit Side 3/16” Hex Wrench Failure to follow this warning will result in abrupt of Service release of system charge and may result in... -
Page 13: Air Handler
11.2 Low Voltage Hook-up Diagrams Air Handler Hook-up Diagram Air Conditioner Neatly bundle all low voltage wires behind the service valve cover as shown. Air Handler Notes: 1. If electric heat does not Comfort Control have 3rd contactor (CH), connect a jumper wire from W3 to W2. - Page 14 Communicating Indoor Unit with 24 V Control Hook-up Diagram Air Conditioner Neatly bundle all low voltage wires behind the service valve cover as shown. Comm. Variable Speed Notes: Furnace or Air Handler 1. See User Interface setup menu for 24 VAC control Comfort Control mode and cooling CFM options.
- Page 15 *AM7 Air Handler Hook-up Diagram Air Conditioner Neatly bundle all low voltage wires behind the service valve cover as shown. Air Handler Comfort Control Blue White Green Yellow Yellow (In) Blue B - Blue Control Board (Out) Y1 - Yellow OUTDOOR OUTDOOR DH/BK...
-
Page 16: 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 17: Section 13. Start Up
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. DONE CANCEL 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... -
Page 18: Section 14. System Charge Adjustment
Section 14. System Charge Adjustment 14.1 Temperature Measurements STEP 1 - Check the outdoor temperatures. 120º F Subcooling (in cooling mode) is the only recom- mended method of charging above 55º F ambi- ent outdoor temperature. 55º F Outdoor Temp For best results the indoor temperature should be kept between 70º... - Page 19 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 SUBCOOL CHARGING CHART CORRECTIONS TABLE Add 4º Add 2º Add 2º...
- Page 20 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, refriger- Table 14.2 ant temperature and pressure from STEP 4, to R-410A REFRIGERANT CHARGING CHART...
- Page 21 STEP 6 - Adjust refrigerant level to attain proper gage pressure. Add refrigerant if the Liquid Gage Pressure is lower than the chart value. Connect gages to refrigerant bottle and unit as illustrated. Purge all hoses. Open bottle. Stop adding refrigerant when liquid line temperature and Liquid Gage Pressure matches the charging chart Final Subcooling value.
-
Page 22: Section 15. Checkout Procedures And Troubleshooting
STEP 9 - Record System Information for refer- ence. Record system pressures and temperatures after charging is complete. Measured Suction Line Temp = __________ º F Outdoor model number = _________________ Liquid Gage Pressure = __________ PSI Measured Outdoor Ambient = __________ º F Suction Gage Pressure = __________ PSI Measured Indoor Ambient = __________ º... -
Page 23: Troubleshooting
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 24 The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice. 6200 Troup Highway Representative-only illustrations included in this document. Tyler, TX 75707 www.trane.com © 2010 Trane 10/10 18-AC74D1-4...