Trane Variable Speed ComfortLink II 4TWV8024A1000B Installer's Manual
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Trane Variable Speed ComfortLink II 4TWV8024A1000B Installer's Manual

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Installer's Guide
Variable Speed ComfortLink™ ™ II
Heat Pumps and Air Conditioners
4TWV8024A1000B
4TWV8036A1000B
4TWV8037A1000B
4TWV8048A1000B
4TWV8049A1000B
4TWV8060A1000B
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Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and
air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
February 2016
4TTV8024A1000B
4TTV8036A1000B
4TTV8037A1000B
4TTV8048A1000B
4TTV8060A1000B
N N o o t t e e : : "Graphics in this document are for representation only.
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
18-BC92D1-1F-EN
Actual model may differ in appearance. "

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Summary of Contents for Trane Variable Speed ComfortLink II 4TWV8024A1000B

  • Page 1 Installer’s Guide Variable Speed ComfortLink™ ™ II Heat Pumps and Air Conditioners 4TWV8024A1000B 4TTV8024A1000B 4TWV8036A1000B 4TTV8036A1000B 4TWV8037A1000B 4TTV8037A1000B 4TWV8048A1000B 4TTV8048A1000B 4TWV8049A1000B 4TTV8060A1000B 4TWV8060A1000B N N o o t t e e : : “Graphics in this document are for representation only. Actual model may differ in appearance.
  • Page 2 E E a a r r t t h h c c o o n n n n e e c c t t i i o o n n e e s s s s e e n n t t i i a a l l b b e e f f o o r r e e c c o o n n n n e e c c t t i i n n g g e e l l e e c c t t r r i i c c a a l l s s u u p p p p l l y y . . 18-BC92D1-1F-EN ©2016 Trane...
  • Page 3 IVSC Board Note: See AHRI directory for approved indoor and outdoor model combinations. Only Trane coils and air handlers are approved for use with variable speed outdoor units. Table 1. Operating Range Cooling 55° F to 120° F Heating -10°...

  • Page 4: Table Of Contents

    Table of Contents Unit Location Considerations ....5 Electrical — High Voltage ....18 .

  • Page 5: Unit Location Considerations

    Unit Location Considerations Table 2. Unit Dimensions and Weight H x D x W (in) Weight * (lb) Models 4TWV8024A 41 x 30 x 33 4TWV8036A 41 x 30 x 33 4TWV8037A 41 x 34 x 37 4TWV8048A 41 x 34 x 37 4TWV8049A 41 x 34 x 37 4TWV8060A...
  • Page 6 U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 4.

  • Page 7: Coastal Considerations

    U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 5.

  • Page 8: Unit Preparation

    Unit Preparation 1. Check for damage and report promptly to the carrier any damage found to the unit. 2. To remove the unit from the pallet, remove tabs by cutting with a sharp tool. Setting Up the Unit Table 7. Pad Installation When installing the unit on a support pad, such as a concrete slab, consider the following: •...

  • Page 9: Refrigerant Line Considerations

    Refrigerant Line Considerations Table 8. Required Refrigerant Line Length Determine required line length and lift. You will need this to determine the subcooling charging corrections later in the installation process. Total Line Length = ___________________________Ft. Total Vertical Change (lift) = ____________________Ft. Table 9.
  • Page 10 R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 10.
  • Page 11 R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 13.

  • Page 12: Refrigerant Line Brazing

    Refrigerant Line Brazing Table 15. Braze the Refrigerant Lines Remove caps or plugs. Use a deburring tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth. Remove the pressure tap cap and valve core from each service valves.
  • Page 13 R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e B B r r a a z z i i n n g g Table 15.

  • Page 14: Refrigerant Line Leak Check

    Refrigerant Line Leak Check Table 16. Check for Leaks 150 PSIG Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen. Check for leaks by using a soapy solution at each brazed location. Note: Remove nitrogen pressure and repair any leaks before continuing.

  • Page 15: Charging: Weigh-In Method

    Charging: Weigh-In Method 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/outdoor temperatures) are not in range to verify with the subcooling charging method.

  • Page 16: Service Valves

    Service Valves Table 21. Open the Gas Service Valve 1/4 Turn Only Important: Leak check and evacuation must be completed before opening the service valves. Counterclockwise Note: Do not vent refrigerant gases into the atmosphere. for Full Open Position Remove valve stem cap. Using a wrench, turn valve stem 1/4 turn counterclockwise to the fully open position.

  • Page 17: Electrical - Low Voltage

    Electrical — Low Voltage Table 23, p. 17defines the size and combined total maximum length of low voltage wiring from the outdoor unit, to the indoor unit, and to the thermostat. Note: The use of color coded low voltage wire is recommended to simplify connections between the outdoor unit, the control, and the indoor unit.

  • Page 18: Electrical - High Voltage

    Electrical — High Voltage Table 25. High Voltage Power Supply W W A A R R N N I I N N G G L L I I V V E E E E L L E E C C T T R R I I C C A A L L C C O O M M P P O O N N E E N N T T S S ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w t t h h i i s s W W a a r r n n i i n n g g c c o o u u l l d d r r e e s s u u l l t t i i n n p p r r o o p p e e r r t t y y d d a a m m a a g g e e , , s s e e v v e e r r e e p p e e r r s s o o n n a a l l i i n n j j u u r r y y , , o o r r d d e e a a t t h h .

  • Page 19: Integrated Variable Speed Control Board

    Integrated Variable Speed Control Board LED Indicators Th e S t a tu s (Gre e n ) a n d High COMM (Am b e r) LEDs a re Voltage EXT.ODT to Condensor lo ca te d in t h e u p p e r rig h t LSOV COMM (not used)

  • Page 20: Start Up

    Start Up Ensure you have completed the following sections. “Refrigerant Line Brazing,” p. 12 through “Electrical — High Voltage,” p. 18 Set System Thermostat to OFF. Turn on disconnect(s) to apply power to the indoor and outdoor units. Wait 3 hours before starting the unit if the outdoor ambient temperature is below 85°...

  • Page 21: System Charge Adjustment

    System Charge Adjustment Table 28. Temperature Measurements Check the outdoor temperatures. 120° F Subcooling using “Charging Mode-Cooling” is the only recommended method of charging between 55 ° F and 120° F ambient outdoor temperature. 55° F For best results the indoor temperature should be kept between 70° F to 80°...

  • Page 22: Subcool Charging Correction Charts

    Subcool Charging Correction Charts Figure 2. Subcool Charging Corrections — 2.0 Ton Figure 4. Subcool Charging Corrections — 4.0 Ton TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) Add 1°...

  • Page 23: Charging The Unit

    Charging the Unit Table 30. Proper Gage Pressure Using the “Refrigerant Charging Chart,” p. 22adjust refrigerant level to attain proper gage pressure. Add refrigerant if the Liquid Gage Pressure is lower than the chart value. Connect gauges to refrigerant bottle and unit as illustrated. Purge all hoses.
  • Page 24 C C h h a a r r g g i i n n g g t t h h e e U U n n i i t t Table 33. System Information Record system pressures and temperatures after charging is complete.

  • Page 25: Communicating Display Assembly

    Communicating Display Assembly (CDA) NAVIGATION • To e n te r a n d e xit Te ch n icia n Me n u s , p re s s th e Up /Do w n b u tto n s s im u lta n e o u s ly fo r 5 s e co n d s .

  • Page 26: Defrost Control (Heat Pump Only)

    Defrost Control (Heat Pump only) D D e e m m a a n n d d D D e e f f r r o o s s t t C C D D A A N N a a v v i i g g a a t t i i o o n n t t o o F F o o r r c c e e d d D D e e f f r r o o s s t t The demand defrost control measures heat pump Figure 6.

  • Page 27: Checkout Procedures

    Checkout Procedures The final phase of the installation is the system Checkout Procedures. The following list represents the most common items covered in a Checkout Procedure. Confirm all requirements in this document have been met. All wiring connections are tight and properly secured. Supply registers and return grilles are open, unobstructed, and air filter is installed.
  • Page 28 Trane offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. ©2016 Trane...

This manual is also suitable for:

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