Table of Contents
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E2008 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Improper
installation,
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.
CAUTION
Physical contact with metal edges and corners
while applying excessive force or rapid motion can
result in personal injury. Be aware of, and use
caution when working near these areas during
installation or while servicing this equipment.
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
noncompliance.
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox AC13 Engineering Handbook.
10/08
*2P1008*
adjustment,
alteration,
may
be
levied
for
INSTALLATION
INSTRUCTIONS
®
Elite
Series AC13 Units
AIR CONDITIONER
506109−01
10/08
Supersedes 07/08
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
Refrigerant flow control kit (Fixed Orifice)
AC13 Air Conditioner Units
The AC13 Air Conditioners, which will also be referred to in
this instruction as the outdoor unit, uses HCFC−22
refrigerant. This outdoor unit must be installed with a
matching indoor unit and line set as outlined in the Lennox
AC13 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)
S
Fixed orifice
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506109−01
*P506109-01*
Litho U.S.A.
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Table of Contents
Related Manuals for Lennox AC13 -018
Summary of Contents for Lennox AC13 -018
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Page 1: Table Of Contents
This outdoor unit must be installed with a noncompliance. matching indoor unit and line set as outlined in the Lennox AC13 Engineering Handbook. IMPORTANT This outdoor unit is designed for use in systems that use one of the following refrigerant metering devices:... -
Page 2: Unit Dimensions
Unit Dimensions − Inches (mm) CAPACITOR OUTDOOR FAN CONTACTOR COMPRESSOR DISCHARGE SUCTION LINE LINE CONNECTION SUCTION LINE LIQUID LINE LIQUID LINE CONNECTIONS CONNECTION SUCTION VALVE AND TOP VIEW GAUGE PORT/SUCTION LINE CONNECTIONS PARTS ARRANGEMENT DISCHARGE AIR LIQUID LINE CONNECTION ELECTRICAL INLETS SUCTION LINE CONNECTION... -
Page 3: General Information
To reduce exposure to this substance or for further information, consult material safety data sheets available from address shown below, or contact your supervisor. Lennox Industries Inc. Figure 1. Cap Tightening Distances P.O. Box 799900 NOTE − A label with specific torque requirements may be Dallas, TX 75379−9900... - Page 4 OUTDOOR UNIT (UNCASED COIL SHOWN) TXV OR FIXED ORIFICE OUTDOOR COIL HIGH PRESSURE PRESSURE LIQUID LINE SUCTION LINE GAUGE MANIFOLD SERVICE VALVE SERVICE VALVE HCFC−22 COMPRESSOR DRUM Figure 3. Typical Gauge Manifold Connections Operating Ball−Type Service Valve Without Torque Wrench: Finger tighten and use an appropriately sized wrench to turn an additional To Access Ball−Type Service Port: 1/6 turn clockwise as illustrated in figure 1.
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Page 5: Removing Existing Outdoor Unit
METHOD 2: TO INDOOR UNIT Use this method if the existing outdoor unit is equipped OPEN TO LINE SET WHEN VALVE IS CLOSED, TO BOTH LINE SET AND UNIT WHEN VALVE IS with manual shut−off valves, and plan on using new OPEN. -
Page 6: Positioning New Outdoor Unit
Some localities are adopting sound ordinances based on Positioning New Outdoor Unit the unit’s sound level registered from the adjacent property, not from the installation property. Install the unit CAUTION as far as possible from the property line. When possible, do not install the unit directly outside a window. -
Page 7: Removing And Installing Panels
NOTE − Keep the height of extenders short enough to Removing and Installing Panels ensure a sturdy installation. If it is necessary to extend further, consider a different type of field−fabricated CAUTION framework that is sturdy enough for greater heights. To prevent personal injury, or damage to panels, The inside diameter of the 4"... -
Page 8: New Or Replacement Line Set
Field refrigerant piping consists of liquid and suction lines practices; replace the panels after installation is complete. from the outdoor unit (braze connections) to the indoor unit coil (flare or sweat connections). Use Lennox L15 (sweat, IMPORTANT non−flare) series line set, or use field−fabricated refrigerant lines as listed in table 2. - Page 9 Model (AC13) and size (e.g. −060) of unit. TO HANG LINE SET FROM JOIST OR RAFTER, USE EITHER METAL STRAPPING WIRE TIE MATERIAL OR ANCHORED HEAVY NYLON (AROUND Line set diameters for the unit being installed (from WIRE TIES. SUCTION LINE table 2 and total length of installation.
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Page 10: Brazing Connections
ANCHORED HEAVY AUTOMOTIVE NYLON WIRE TIE MUFFLER-TYPE HANGER WALL STUD WALL STUD STRAP LIQUID LINE STRAP LIQUID LINE TO TO SUCTION LINE SUCTION LINE LIQUID LINE LIQUID LINE SUCTION LINE − WRAPPED IN METAL METAL SLEEVE ARMAFLEX SUCTION LINE − WRAPPED IN ARMAFLEX SLEEVE Figure 17. -
Page 11: Removing Indoor Unit Metering Device
1. Cut ends of the refrigerant lines square (free from TYPICAL FIXED ORIFICE REMOVAL PROCEDURE nicks or dents). Debur the ends. The pipe must remain DISTRIBUTOR TUBES round, do not pinch end of the line. LIQUID LINE ORIFICE HOUSING 2. Remove service cap and core from both the suction and liquid line service ports. -
Page 12: Installing New Indoor Unit Metering Device
1. On fully cased coils, remove the coil access and plumbing panels. 2. Remove any shipping clamps holding the liquid line FIXED ORIFICE (1) and distributor assembly. FIXED ORIFICE EXTRACTOR (1) TEFLON RING (1) 3. Disconnect the equalizer line from the TXV equalizer FIXED ORIFICE STICKER (1) line fitting on the suction line. - Page 13 1. Remove the field−provided fitting that temporary reconnected the liquid line to the indoor unit’s LIQUID LINE ORIFICE HOUSING distributor assembly. 2. Install one of the provided Teflon rings around the FIXED stubbed end of the TXV and lightly lubricate the ORIFICE TEFLON connector threads and expose surface of the Teflon...
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Page 14: Testing For Leaks
NOTE − Normally, the high pressure hose is connected to the liquid line port; however, connecting it to the suction FLARE NUT FLARE SEAL port better protects the manifold gauge set from high pressure damage. COPPER 2. With both manifold valves closed, connect the cylinder FLARE SEAL BONNET of HCFC−22 refrigerant to the center port of the... -
Page 15: Servicing Unit Delivered Void Of Charge
S high pressure gauge to liquid line service valve 2. Evacuate the system to remove as much of the moisture as possible. 2. Connect micron gauge. 3. Use nitrogen to break the vacuum and install a liquid 3. Connect the vacuum pump (with vacuum gauge) to line filter drier in the system. -
Page 16: Start−Up And Charging Procedures
NOTE − A COMPLETE UNIT WIRING DIAGRAM IS LOCATED INSIDE THE UNIT CONTROL BOX COVER. Figure 30. Typical Wiring Diagram and to maintain separation of field installed low and THERMOSTAT INDOOR UNIT high voltage circuits. POWER Start−Up and Charging Procedures HEAT OUTDOOR IMPORTANT... - Page 17 SETTING UP TO CHECK CHARGE INDOOR AIRFLOW CHECK 1. Close manifold gauge set valves. Connect the center Check indoor airflow using the Delta−T ( process using manifold hose to an upright cylinder of HCFC−22. the illustration in figure 32. 2. Connect the manifold gauge set to the unit’s service DETERMINING CHARGE METHOD ports as illustrated in figure 3.
- Page 18 64ºF 1. Check Liquid and suction line pressures START: Measure outdoor ambient temperature (17.7ºC) and 2. Compare unit pressures with Table 5, Normal Operating Pressures. BELOW 3. Conduct leak check; evacuate USE EITHER APPROACH previously outlined. ABOVE or OR SUBCOOLING 4.
- Page 19 65ºF 1. Confirm proper airflow across coil using figure START: Measure outdoor ambient temperature (18ºC) 2. Compare unit pressures with Table 5, Normal Operating Pressures. ABOVE USE WEIGH-IN METHOD DO NOT CHARGE UNIT 3. Set thermostat to call for heat (must have a ABOVE or Weigh-in or remove refriger- (Results of charging at low...
- Page 20 1. Confirm proper airflow across coil using figure 32. 40ºF (4ºC) START: Measure outdoor ambient temperature 2. Compare unit pressures with Table 5, Normal Operating Pressures. ABOVE 3. Use SUPERHEAT to correctly charge unit or to USE WEIGH-IN METHOD verify the charge is correct. Weigh-in or remove refrigerant ABOVE or 4.
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Page 21: System Operation
Table 5. 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 IMPORTANT differences in installations. Significant deviations could mean that the system is not properly charged or that a problem exists with some component in the system. -
Page 22: Homeowner Information
Although special care 1. Air Filter Ask your Lennox dealer to show you where has been taken to keep exposed edges to a minimum, your indoor unit’s filter is located. -
Page 23: Optional Accessories
System Switch Set the system switch for heating, cooling or auto operation. The auto mode allows the system to Refer to the Lennox AC13 Engineering Handbook for the automatically switch from heating mode to cooling mode to maintain predetermined comfort settings. -
Page 24: Start−Up And Performance Checklist
Start−Up and Performance Checklist Job Name Job no. Date Job Location City State Installer City State Unit Model No. Serial No. Service Technician Nameplate Voltage Rated Load Ampacity Compressor Outdoor Fan Maximum Fuse or Circuit Breaker Electrical Connections Tight? - Indoor Filter clean? - Supply Voltage (Unit Off) Indoor Blower RPM...