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Installer's Guide
Variable Speed ComfortLink™ II
Side Discharge HP Models
For coastal applications where units are installed within one (1) mile of salt water, epoxy coated models are recommended.
These models have an 8 week lead time after order.
4TWL9024A1000A
4TWL9036A1000A
4TWL9048A1000A
4TWL9060A1000A
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 pre-
cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
March 2020
Epoxy Coated Model
4TWL9024A1COTA
4TWL9036A1COTA
4TWL9048A1COTA
4TWL9060A1COTA
SAFETY WARNING
18-BC100D1-1C-EN
Note: "Graphics in this document are for representation only.
Actual model may differ in appearance."
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Summary of Contents for Trane Variable Speed ComfortLink II
- Page 1 Installer’s Guide Variable Speed ComfortLink™ II Side Discharge HP Models For coastal applications where units are installed within one (1) mile of salt water, epoxy coated models are recommended. These models have an 8 week lead time after order. Epoxy Coated Model 4TWL9024A1000A 4TWL9024A1COTA 4TWL9036A1000A...
- Page 2 Safety Section-VSPD Side Discharge C C A A U U T T I I O O N N I I m m p p o o r r t t a a n n t t — This document contains a wiring diagram and service information.
- Page 3 Table 1. Operating Range N N o o t t e e : : See AHRI directory for approved indoor and outdoor model combinations. Only Trane coils and air handlers/furnaces are approved for use with variable speed outdoor units.
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Page 4: Table Of Contents
Table of Contents Unit Location Considerations ....5 Start Up ........19 Setting Up the Unit . -
Page 5: Unit Location Considerations
Unit Location Considerations Table 2. Unit Dimensions (in inches) and Weight SERVICE 1.50 TYP PANEL ACCESS PANEL .43 TYP 18-BC100D1-1C-EN... - 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 3.
- Page 7 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 3.
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Page 8: Setting Up The Unit
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 9: Refrigerant Line Considerations
Refrigerant Line Considerations Table 8. Factory Charge Table 9. Refrigerant Line and Service Valve Connection Sizes Table 10. Required Refrigerant Line Length Line Length Table 11. Refrigerant Line Insulation Vapor Line Liquid Line Insulation 18-BC100D1-1C-EN... - 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 12.
- 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 15.
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Page 12: Refrigerant Line Brazing
Refrigerant Line Brazing Table 17. Braze the Refrigerant Lines 18-BC100D1-1C-EN... - 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 17.
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Page 14: Refrigerant Line Leak Check
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 Refrigerant Line Leak Check Table 18. -
Page 15: Electrical - Low Voltage
Electrical — Low Voltage Table 19. Low Voltage Maximum Wire Length Table 20. Low Voltage Hook-up Diagrams Communicating Outdoor Unit Communicating Communicating Note 5 Comfort Control Indoor Unit Note 4 Brown D - Note 3 Note 1 RED Only used for Brown &... -
Page 16: Service Valves
Service Valves Table 21. Open the Gas Service Valve 1/4 Turn Only Counterclockwise for Full Open Position Valve Stem Unit Side of Valve Pressure Tap Port Gas Line Connection Table 22. Open the Liquid Service Valve W W A A R R N N I I N N G G S S E E R R V V I I C C E E V V A A L L V V E E 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 w w i i l l l l r r e e s s u u l l t t i i n n a a b b r r u u p p t t r r e e l l e e a a s s e e o o f f s s y y s s t t e e m m c c h h a a r r g g e e a a n n d d m m a a y y r r e e s s u u l l t t i i n n... -
Page 17: Discharge Drive
LED Indicators — Variable Speed Side Discharge Drive L L E E D D ’ ’ S S 18-BC100D1-1C-EN... -
Page 18: Electrical - High Voltage
Electrical — High Voltage Table 23. 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: Start Up
Start Up 3 HRS . 18-BC100D1-1C-EN... -
Page 20: System Charge Adjustment
System Charge Adjustment Table 26. Temperature Measurements 120° F 55° F 80° F 70° F Table 27. Subcooling Charging Corrections 18-BC100D1-1C-EN... -
Page 21: Charging And Correction Charts
Charging and Correction Charts Table 28. Subcool Charging Correction Charts 3.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) 2.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) Add 1° Add 1° Use Design Subcooling Use Design Subcooling 90 100 110 120 130 140 150 90 100 110 120 130 140 150... -
Page 22: Charging The Unit
Charging the Unit Table 29. Stabilize the system 20 MIN. Table 30. Proper Gage Pressure 107 °F Table 31. Verify Performance PRESSURE CURVE SAMPLE Cooling @ 1450 SCFM Heating @ 1350 SCFM INDOOR ENTERING INDOOR ENTERING WET BULB CURVES DRY BULB CURVES TOP TO BOTTOM TOP TO BOTTOM 71, 67, 63 AND 59 DEG F. - Page 23 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 32. Proper Gage Pressure 107 °F Table 33. System Information 18-BC100D1-1C-EN...
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Page 24: Subcooling Charging Below 55º F Outdoor Temp. (In Heating Only)
Subcooling Charging Below 55º F Outdoor Temp. (In Heating Only) Table 34. Subcooling Charging Below 55º F Outdoor Temp. (In Heating Only) 20 MIN. 18-BC100D1-1C-EN... -
Page 25: Communicating Display Assembly
Communicating Display Assembly (CDA) NAVIGATION • To enter and exit Technician Menus, press the Up/Down buttons simultaneously for 5 seconds. • To return to the Home Screen, press the Up/Down buttons SYSTEM STATUS simultaneously for 5 seconds. • To return to the top level of any menu, press the Left/Right buttons XXXXXXXXXXXXXXXX simultaneously for 5 seconds. - Page 26 C C o o m m m m u u n n i i c c a a t t i i n n g g D D i i s s p p l l a a y y A A s s s s e e m m b b l l y y ( ( C C D D A A ) ) 1.
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Page 27: Checkout Procedures
Checkout Procedures 18-BC100D1-1C-EN... - Page 28 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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