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E2012 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
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 Lennox 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 4.
BRAZING
LINE
VALVES
It is imperative to follow the brazing technique illustrated starting on
page 6 to avoid damaging the service valve's internal seals.
4/2012
SET
TO
SERVICE
INSTALLATION
INSTRUCTIONS
Small Splits TSA*H4 Units
AIR CONDITIONER
506646-01
4/2012
Supersedes 11/2010
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 Lennox
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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Related Manuals for Lennox TSA042H4N4
Summary of Contents for Lennox TSA042H4N4
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Page 1: Table Of Contents
It is critical for proper unit operation to place outdoor unit on an refrigerant. This outdoor unit must be installed with a elevated surface as described in Unit Placement section on page 4. matching indoor unit and line set as outlined in the Lennox BRAZING LINE SERVICE TSA*H4 Engineering Handbook. -
Page 2: Unit Dimensions
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 3: Model Number Identification
OPERATING SERVICE VALVES Each valve is equipped with a service port which has a factory-installed valve stem. Figure 1 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. -
Page 4: 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 5: New Or Replacement Line Set
NOTE - For new or replacement line set installation, refer to Service and Application Note - Corp. 9112-L4 (C-91-4). To obtain the correct information from Lennox, be sure to communicate the following points: Model (TSA*H4) and size of unit (e.g. -060). -
Page 6: 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 7 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 8 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 9: 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 10. TYPICAL EXISTING FIXED ORIFICE TYPICAL EXISTING EXPANSION VALVE REMOVAL REMOVAL PROCEDURE (UNCASED PROCEDURE (UNCASED COIL SHOWN) COIL SHOWN) -
Page 10: 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 11. -
Page 11: 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 12: 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 13: 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 14 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 15: Servicing Unit Delivered Void Of Charge
3. Open the liquid line and suction line service valve Servicing Units Delivered Void of Charge stems (Operating Service Valves on page 2) to If the outdoor unit is void of refrigerant, clean the system release the refrigerant charge (contained in outdoor unit) into the system. - Page 16 START: Determine how refrigerant is metered WHEN TO CHARGE? Warm weather best Can charge in colder weather CHARGE METHOD? Determine by: Metering device type OUTDOOR AMBIENT Outdoor ambient temperature TEMPERATURE REQUIREMENTS: 65ºF (18.3ºC) Sufficient heat load in structure 64ºF (17.7ºC) AND ABOVE Indoor temperature between 70‐80ºF (21-26ºC) AND BELOW...
- Page 17 1. Confirm proper airflow across coil using figure 14. START: Measure outdoor ambient temperature 2. Compare unit pressures with Table 3, Normal Operating Pressures. 3. Set thermostat to call for heat (must have a cooling load between 70‐80ºF (21-26ºC). USE WEIGH‐IN METHOD 4.
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Page 18: Maintenance
Table 3. HFC-410A Normal Operating Pressures (Liquid +10 and Suction +5 psig) 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. - Page 19 1. Air Filter — Ask your Lennox dealer to show you Indoor Unit where your indoor unit's filter is located. It will be either 1.
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Page 20: Start-Up And Performance Checklist
inside coil surface to the outside, the mesh may be 9 PINS USED ON -048 removed by first removing the top of the unit which will AND -060; 6 PINS ALL OTHERS allow for removal of the wire cage. 3. Then, using pliers to grip the head of the push pins, pull straight out to extract the push pins along one side of the coil.