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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
who have 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
specified in Engineering Handbook. Coils previously
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.
INSTALLATION
INSTRUCTIONS
T-Classt TSA*H4 Units
AIR CONDITIONER
507994-01
7/19
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
General
TSA*H4 Air Conditioners, which will also be referred to in
this instruction as the outdoor unit, uses HFC-410A
refrigerant. This outdoor unit must be installed with a
matching indoor unit and line set as outlined in the TSA*H4
Engineering Handbook.
This outdoor unit is designed for use in systems that use
one of the following refrigerant metering devices:
S
Thermal expansion valve (TXV)
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Table of Contents
Related Manuals for Lennox T-Class TSA H4 Series
Summary of Contents for Lennox T-Class TSA H4 Series
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS T-Classt TSA*H4 Units AIR CONDITIONER 507994-01 7/19 TABLE OF CONTENTS Shipping and Packing List ......General . -
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 Numbers TSA036H4N4 28-1/4 (718) 37-1/4 (946) TSA048H4N4 28-1/4 (718) 37-1/4 (946) TSA060H4N4 32-1/4 (819) 33-1/4 (845) Typical Unit Parts Arrangement COMPRESS0R (B1) -
Page 3: Model Number Identification
0 - 800 psig on the high side and a low recess. side of 30" vacuum to 250 psig with dampened speed to See the Lennox Service and Application Notes #C-08-1 500 psi. Gauge hoses must be rated for use at up to 800 for further details and information. - Page 4 OPERATING SERVICE VALVES Each valve is equipped with a service port which has a factory-installed valve stem. Figure 2 provides information The liquid and vapor line service valves are used for on how to access and operating both angle and ball service removing refrigerant, flushing, leak testing, evacuating, valves.
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Page 5: Recovering Refrigerant From Existing System
Recovering Refrigerant from Existing System Use the following procedure to recover refrigerant from an existing system (indoor coil, line set and outdoor unit). 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. -
Page 6: New 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
Lennox Technical Support Product Applications for BRAZE CONNECTION POINTS assistance. To obtain the correct information from Lennox, be sure to communicate the following points: Model (TSA*H4) and size of unit (e.g. -060). Line set diameters for the unit being installed as listed... - Page 8 Table 2. Refrigerant Line Set Field Connections Recommended Line Set Models Number Liquid Line Suction Line Liquid Line Suction Line L15 Line Set TSA036H4N4 3/8 in. (10 mm) 7/8 in (22 mm) 3/8 in. (10 mm) 7/8 in (22 mm) L15-65 —...
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Page 9: Brazing Connections
Polyol ester (POE) oils are used Wear gloves and protective goggles or face shield to in Lennox units charged with HFC-410A refrigerant. protect against burns. Residual mineral oil can act as an insulator, preventing Wash hands with soap and water after handling brazing 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 REMOVAL PROCEDURE (UNCASED PROCEDURE (UNCASED COIL SHOWN) COIL SHOWN) -
Page 13: Installing Indoor Metering Device
Refer to below illustration for reference during installation of expansion valve unit. . See the Lennox TSA*H4 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 care to down to 1 or 2 psig (6.9 to 13.8 kPa). empty all existing traps. Polyol ester (POE) oils are used in Lennox units charged with HFC-410A refrigerant. WARNING 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 set to liquid line service valve MANIFOLD... -
Page 16: Electrical Connections
defined as any gas that will not condense under WARNING temperatures and pressures present during operation of an air conditioning system. Non-condensables and water Danger of Equipment Damage. Avoid deep vacuum suction combine with refrigerant to produce substances operation. Do not use compressors to evacuate a that corrode copper piping and compressor parts. - Page 17 ROUTING HIGH VOLTAGE/ GROUND AND CONTROL WIRING HIGH VOLTAGE / GROUND WIRES HIGH VOLTAGE FIELD WIRING Any excess high voltage field wiring should be trimmed and LOW VOLTAGE secured away from any low voltage field wiring. To facilitate a FIELD WIRING GROUND conduit, a cutout is located in the bottom of the control panel.
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Page 18: Servicing Unit Delivered Void Of Charge
Figure 15. Typical Factory Wiring Diagram 3. Open the liquid line and suction line service valve Servicing Units Delivered Void of Charge stems (Operating Service Valves on page 3) to If the outdoor unit is void of refrigerant, clean the system release the refrigerant charge (contained in outdoor using the procedure described below. - Page 19 GAUGE SET MANIFOLD GAUGE SET HIGH CONNECTIONS FOR TESTING AND CHARGING SUCTION LINE SERVICE PORT CONNECTION OUTDOOR UNIT Close manifold gauge set valves and connect the center hose to a cylinder of HFC-410A. Set liquid phase REFRIGERANT TANK charging. Connect the manifold gauge set's low CHARGE IN pressure side to the suction line service LIQUID PHASE...
- Page 20 CHECKING AIR FLOW AT INDOOR COIL Check airflow using the Delta-T ( process using the illustration in figure 18. Delta−T 1. Determine the desired DT—Measure entering air temperature Temp. using dry bulb (A) and wet bulb (B). DT is the intersecting value of A 24 24 24 23 23 22 22 22 20 19 18 17 16 15 of air entering...
- Page 21 1. Confirm proper airflow across coil using figure 65ºF START: Measure outdoor ambient temperature 2. Compare unit pressures with Table 3, Normal ABOVE Operating Pressures. 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...
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Page 22: System Operation
Table 4. HFC-410A Temperature (°F) - Pressure (Psig) °F °C Psig °F °C Psig -40.0 11.6 15.6 -37.2 14.9 18.3 -34.4 18.5 21.1 -31.7 22.5 23.9 -28.9 26.9 26.7 -26.1 31.7 29.4 -23.3 36.8 32.2 -20.6 42.5 35.0 -17.8 48.6 37.8 -15.0 55.2... - Page 23 2. Lennox blower motors are prelubricated and 1. Air Filter — Ask your Lennox dealer to show you permanently sealed. No more lubrication is needed. where your indoor unit's filter is located. It will be either 3.
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Page 24: Start-Up And Performance Checklist
For update-to-date information, see any of the following publications: 9 PINS USED ON -048 AND -060; 6 PINS ALL Lennox TSA*H4 Engineering Handbook OTHERS Lennox Product Catalog Lennox Price Book Cleaning Outdoor Coil 1. Make sure power is off before cleaning. Clean and inspect outdoor coil.