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Lennox International Inc. 506945-01 - page 1
7/2012 506945-01 *2P72012* *P506945-01* Page 1 E 2013 Lennox Industries Inc. Dallas, T exas, USA THIS MANUAL MUST BE LEFT WITH THE HOMEOWNER FOR FUTURE REFERENCE W ARNING The State of California has determined that this product may contain or produce a chemical or chemicals, in very low doses, which may cause serious illness or death. It may also c ...
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Lennox International Inc. 506945-01 - page 2
Page 2 A B SIDE VIEW UNIT DIMENSIONS - INCHES (MM) FIGURE 2 T ABLE 1 UNIT DIMENSIONS Model Numbers A B 13ACX-018-230 24-1/4 (616) 25-1/4 (641) 13ACX-024-230 24-1/4 (616) 25-1/4 (641) 13ACX-030-230 24-1/4 (616) 29-1/4 (743) 13ACX-036-230 24-1/4 (616) 29-1/4 (743) 13ACX-042-230 28-1/4 (718) 29-1/4 (743) 13ACX-048-230 28-1/4 (718) 33-1/4 (845) 13ACX-0 ...
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Lennox International Inc. 506945-01 - page 3
Page 3 13ACX SERIES ANCHORED HEA VY NYLON WIRE TIE OR AUT OMOTIVE MUFFLER‐TYPE HANGER STRAP LIQUID LINE TO V APOR LINE W ALL STUD LIQUID LINE NON-CORROSIVE MET AL SLEEVE V APOR LINE - WRAPPED IN ARMAFLEX AUT OMOTIVE MUFFLER‐TYPE HANGER REFRIGERANT LINE SET — TRANSITION FROM VERTICAL TO HORIZONT AL Line Set Isolation — The following illustra ...
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Lennox International Inc. 506945-01 - page 4
Page 4 STEP 2 -- REFRIGERANT PIPING -- Flushing Existing Line Set and Indoor Coil Flush the existing line set per the following instructions. For more information, refer to the Installation and Service Procedures manual available on DaveNet. CAUTION - DO NOT attempt to flush and re-use existing line sets or indoor coil when the system contains cont ...
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Lennox International Inc. 506945-01 - page 5
Page 5 13ACX SERIES STEP 2 -- REFRIGERANT PIPING -- Removing Existing Indoor Metering Device SENSING LINE TEFLON ® RING FIXED ORIFICE BRASS NUT LIQUID LINE ASSEMBL Y (INCLUDES STRAINER) LIQUID LINE ORIFICE HOUSING DISTRIBUT OR TUBES DISTRIBUT OR ASSEMBL Y REMOVE AND DISCARD WHITE TEFLON ® SEAL (IF PRESENT) A On fully cased coils, remove the coil ...
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Lennox International Inc. 506945-01 - page 6
Page 6 STEP 2 -- REFRIGERANT PIPING -- Brazing Procedures A TT ACH THE MANIFOLD GAUGE SET FOR BRAZING LIQUID AND SUCTION / V APOR LINE SERVICE V AL VES OUTDOOR UNIT LIQUID LINE V APOR LINE LIQUID LINE SERVICE VA LV E SUCTION / V APOR LINE SER VICE VA LV E A TT ACH GAUGES INDOOR UNIT SUCTION / V APOR SERVICE PORT MUST BE OPEN TO ALLOW EXIT POINT FOR ...
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Lennox International Inc. 506945-01 - page 7
Page 7 13ACX SERIES WHEN BRAZING LINE SET TO SER VICE V AL VES, POINT FLAME A WA Y FROM SER VICE V AL V E. LIQUID LINE SERVICE V AL VE LIQUID LINE BRAZE LINE SET Wra p both service valves with water -saturated cloths as illustrated here and as mentioned in step 4, before brazing to line set. Cloths must remain water-saturated throughout the brazing ...
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Lennox International Inc. 506945-01 - page 8
Page 8 STEP 2 -- REFRIGERANT PIPING -- Installing Indoor Expansion V alve This outdoor unit is designed for use in systems that use either an fixed orifice (RFC) (included with outdoor unit), or expansion valve metering device (purchased separately) at the indoor coil. Se e t he 13ACX Product Specifications bulletin (EHB) for approved expansion val ...
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Lennox International Inc. 506945-01 - page 9
Page 9 13ACX SERIES STEP 3 -- LEAK TEST AND EV ACUA TION A With both manifold valves closed, connect the cylinder of HFC-410A refrigerant to the center port of the manifold gauge set. Open the valve on the HFC-410A cylinder (vapor only). B Open the high pressure side of the manifold to allow HFC-410A into the line set and indoor unit. W eigh in a t ...
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Lennox International Inc. 506945-01 - page 10
Page 10 STEP 3 -- LEAK TEST AND EV ACUA TION (CONTINUED) A Open both manifold valves and start the vacuum pum p. B Evacuate the line set and indoor unit to an absolute pressure of 23,000 microns (29.01 inches of mercury). NOTE — During the early stages of evacuation, it is desirable to close the manifold gauge valve at least once. A rapid rise in ...
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Lennox International Inc. 506945-01 - page 11
Page 1 1 13ACX SERIES STEP 4 -- ELECTRICAL -- Circuit Sizing and Wire Routing In t he U .S .A., w iring must conform with current local codes a nd the current National Electric Code (NEC). In Canada, wiring must conform with cur rent local codes and the current Canadian Elec trical Code (CEC ). Refer to the furnace or air handler installation instr ...
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Lennox International Inc. 506945-01 - page 12
Page 12 STEP 4 -- ELECTRICAL (CONTINUED) -- High V oltage and Field Control Wiring The following illustration provide an example of control wiring connections when using standard thermostat. Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring. T o facilitate a conduit, a cutout is located in the ...
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Lennox International Inc. 506945-01 - page 13
Page 13 13ACX SERIES T ABL E 3 . T O RQUE REQUIREM ENTS Parts Recommended Torque Service valve cap 8 ft.- lb. 1 1 NM Sheet metal screws 16 in.- lb. 2 NM Machine screws #10 28 in.- lb. 3 NM Compressor bolts 90 in.- lb. 10 NM Gauge port seal cap 8 ft.- lb. 1 1 NM Using Manifold Gauge Set When checking the system charge, only use a manifold gauge set ...
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Lennox International Inc. 506945-01 - page 14
Page 14 CHECKING AND ADDING SYSTEM REFRIGERANT The 13ACX unit is factory-charged with enough HFC-410A refrigerant to accommodate a 15-foot length of refrigerant piping. Charge should be checked and adjusted using the tables provided on the charging procedure sticker located o n th e unit access panel. Detailed information is provided in th e 13ACX ...
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Lennox International Inc. 506945-01 - page 15
Page 15 13ACX SERIES 13ACX Start-Up and Performance Checklist Customer Address Indoor Unit Model Serial Outdoor Unit Model Serial Notes: ST ART UP CHECKS Refrigerant T ype: Rated Load Amps: Actual Amps Rated V olts Actual V olts Condenser Fan Full Load Amps Actual Amps: COOLING MODE Suction Pressure: Liquid Pressure: Supply Air T emperature: Ambien ...
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