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E2010 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs AND HFCs) as of July 1,
1992. Approved methods of recovery, recycling or
reclaiming must be followed. Fines and/or incarceration
may be levied for noncompliance.
IMPORTANT
This unit must be matched with an indoor coil as speci-
fied in Lennox Engineering Handbook. Coils previous-
ly charged with HCFC−22 must be flushed.
NOTICE TO INSTALLER
UNIT PLACEMENT
It is critical for proper unit operation to place outdoor unit on an
elevated surface as described in Unit Placement section on page 6.
BRAZING LINE SET TO SERVICE VALVES
It is imperative to follow the brazing technique illustrated starting on
page 9 to avoid damaging the service valve's internal seals.
11/10
*2P1110*
INSTALLATION
INSTRUCTIONS
T−Classt TSA*S4 Units
M and T Voltages
AIR CONDITIONER
506663−01
11/10
Supersedes 506418−01
TABLE OF CONTENTS
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Shipping and Packing List
Check the unit for shipping damage and listed times below
are intact. If damaged, or if parts are missing, immediately
contact the last shipping carrier.
1
Assembled outdoor unit
1
Liquid line filter drier
Outdoor Unit
This outdoor unit is designed for use with HFC−410A
refrigerant only. This unit must be installed with an
approved indoor air handler or coil. See the Lennox
TSA*S4 Engineering Handbook for approved indoor
component matchups.
This outdoor unit is designed for use in thermal expansion
valve (TXV) systems only.
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506663−01
*P506663-01*
Litho U.S.A.
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Table of Contents
Related Manuals for Lennox T?Class TSA*S4 Units
Summary of Contents for Lennox T?Class TSA*S4 Units
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Page 1: Table Of Contents
This unit must be installed with an elevated surface as described in Unit Placement section on page 6. approved indoor air handler or coil. See the Lennox TSA*S4 Engineering Handbook for approved indoor BRAZING LINE SET TO SERVICE VALVES component matchups. -
Page 2: Unit Dimensions
Unit Dimensions − Inches (mm) OUTDOOR COIL FAN Discharge Air COMPRESSOR SUCTION AND LIQUID LINE CONNECTIONS OPTIONAL UNIT STAND-OFF KIT (4) (FIELD−INSTALLED) SIDE VIEW SIDE VIEW Model Number TSA024S4N41T and M 24−1/4 (616) 25−1/4 (641) TSA030S4N41T and M 24−1/4 (616) 29−1/4 (743) TSA036S4N41M 28−1/4 (724) -
Page 3: Model Number Identification
Physical contact with metal edges and corners while applying excessive force or rapid motion can result in See the Lennox Service and Application Notes #C−08−1 personal injury. Be aware of, and use caution when for further details and information. - Page 4 Manifold gauge set used with HFC−410A refrigerant OPERATING SERVICE VALVES systems must be capable of handling the higher system The liquid and vapor line service valves are used for operating pressures. The gauges should be rated for use removing refrigerant, flushing, leak testing, evacuating, with pressures of 0 −...
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Page 5: Recovering Refrigerant From Existing System
Recovering Refrigerant from Existing System RECOVERING REFRIGERANT FROM SYSTEM DISCONNECT POWER CONNECT MANIFOLD GAUGE SET Disconnect all power to the existing outdoor unit at the service Connect a gauge set, clean recovery cylinder and a recovery disconnect switch or main fuse box/breaker panel. machine to the service ports of the existing unit. -
Page 6: New Outdoor Unit Placement
MINIMUM CLEARANCE CLEARANCE ON ALL SIDES INCHES (MILLIMETERS) ABOVE UNIT 6 (152) ACCESS PANEL NOTES: 48 (1219) Clearance to one of the other three sides must be 36 inches (914mm). 30 (762) 12 (305) Clearance to one of the remaining two sides may be 12 inches (305mm) and the final side may be 6 inches (152mm). -
Page 7: New Or Replacement Line Set
A replacement filter drier is available Field refrigerant piping consists of liquid and suction lines from Lennox. See Brazing Connections on page 9 for from the outdoor unit (braze connections) to the indoor unit special procedures on brazing filter drier connections to coil (flare or braze connections). - Page 8 Table 2. Refrigerant Line Set Inches (mm) Field Connections Recommended Line Set Model Liquid Line Vapor Line Liquid Line Vapor Line L15 Line Sets TSA024S4N4 3/8 in. (10 mm) 3/4 in. (19 mm) 3/8 in. (10 mm) 3/4 in. (19 mm) L15−41 15 ft.
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Page 9: Brazing Connections
Polyol ester (POE) oils Wear gloves and protective goggles or face shield to are used in Lennox units charged with HFC−410A protect against burns. refrigerant. Residual mineral oil can act as an Wash hands with soap and water after handling brazing insulator, preventing proper heat transfer. - Page 10 CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from both the and debur the ends. The pipe must remain round. Do not crimp end vapor and liquid line service ports.
- Page 11 WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap a saturated cloth around service valve bodies and copper tube stub. Use another saturated cloth underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the suction / vapor valve stem port.
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Page 12: Flushing Line Set And Indoor Coil
Flushing Line Set and Indoor Coil Flushing is only required if existing indoor coil and line set are to be used. Otherwise proceed to Installing Indoor Metering Device on page 13. TYPICAL EXISTING FIXED ORIFICE TYPICAL EXISTING EXPANSION VALVE REMOVAL PROCEDURE REMOVAL PROCEDURE (UNCASED COIL (UNCASED COIL SHOWN) SHOWN) -
Page 13: Installing Indoor Metering Device
Refer to below illustration for reference during installation of expansion valve unit. . See the Lennox TSA*S4 Engineering Handbook for After installation of the indoor coil metering device, approved expansion valve kit match ups. The expansion valve unit can be installed internal or external to the indoor proceed to Leak Test Line Set and Indoor Coil on page 14. -
Page 14: Leak Test Line Set And Indoor Coil
Take down to 1 or 2 psig (6.9 to 13.8 kPa). care to empty all existing traps. Polyol ester (POE) oils are used in Lennox units charged with HFC−410A WARNING refrigerant. Residual mineral oil can act as an insulator, preventing proper heat transfer. -
Page 15: Evacuating Line Set And Indoor Coil
Evacuating Line Set and Indoor Coil CONNECT GAUGE SET HIGH NOTE Remove cores from service valves (if not already done). Connect low side of manifold gauge set with 1/4 SAE in−line tee to vapor line service valve Connect high side of manifold gauge OUTDOOR MANIFOLD set to liquid line service valve... -
Page 16: Electrical Connections
for additional wiring application diagrams and refer to unit Electrical nameplate for minimum circuit ampacity and maximum overcurrent protection size. In the U.S.A., wiring must conform with current local codes and the current National Electric Code (NEC). In Canada, 24VAC TRANSFORMER wiring must conform with current local codes and the current Use the transformer provided with the furnace or air Canadian Electrical Code (CEC). -
Page 17: Control Wiring
ROUTING HIGH VOLTAGE/ GROUND AND CONTROL WIRING HIGH VOLTAGE / GROUND WIRES Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring. To facilitate a conduit, a cutout is located in the bottom of the control panel. Connect conduit to the control panel using a proper conduit fitting. THREE PHASE HIGH VOLTAGE CONNECTIONS... - Page 18 Figure 14. Typical Field Wiring Diagram M Voltage 380/420v (3PH) 50Hz Page 18 506663−01 11/10...
- Page 19 Figure 15. Typical Field Wiring Diagram T Voltage 220/240v (1PH) 50Hz Page 19 TSA*S4 SERIES...
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Page 20: Servicing Unit Delivered Void Of Charge
Figure 16. Typical Factory Wiring Diagram 3. After evacuation is complete, open the liquid line and Servicing Units Delivered Void of Charge suction line service valves to release the refrigerant If the outdoor unit is void of refrigerant, clean the system charge (contained in outdoor unit) into the system. - Page 21 GAUGE SET MANIFOLD GAUGE SET CONNECTIONS FOR TESTING AND CHARGING HIGH SUCTION LINE SERVICE PORT CONNECTION OUTDOOR UNIT AClose manifold gauge set valves and connect the center hose to a cylinder of HFC−410A. Set liquid phase REFRIGERANT TANK charging. BConnect the manifold gauge set’s low pressure side to the suction line service CHARGE IN LIQUID PHASE...
- Page 22 CHECKING AIR FLOW AT INDOOR COIL Check airflow using the Delta−T ( process using the illustration in figure 19. 1. Determine the desired DT Measure entering air temper- Temp. 24 24 24 23 23 22 22 22 20 19 18 17 16 15 ature using dry bulb (A) and wet bulb (B).
- Page 23 65ºF 1. Confirm proper airflow across coil using figure START: Measure outdoor ambient temperature (18.3ºC) 2. Compare unit pressures with table 5 or 6. ABOVE USE WEIGH-IN METHOD DO NOT CHARGE UNIT 3. Set thermostat to call for heat (must have a cooling load between 70-80ºF (21−26ºC) ABOVE or Weigh-in or remove refrigerant...
- Page 24 Use this table to perform maintenance checks; it is not a procedure for charging the system. Minor variations in these pressures may be due to differences in installations. IMPORTANT Significant deviations could mean that the system is not properly charged or that a problem exists with some component in the system.
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Page 25: System Operation
Table 8. Crankcase Heaters Indoor Unit Parts Watts Voltage 1. Clean or change filters. M Voltage 2. Lennox blower motors prelubricated T Voltage permanently sealed. No more lubrication is needed. Page 25 TSA*S4 SERIES... - Page 26 (i.e., sprinkler systems, soakers, 1. Air Filter Ask your Lennox dealer to show you waste water, etc.) will corrode the surface of steel and where your indoor unit’s filter is located. It will be either...
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Page 27: Start−Up And Performance Checklist
If your system fails to operate, check the following before calling for service: 4. Lennox Branded Air Filters are designed to remove airborne particles from the air passing through Verify room thermostat settings are correct.