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INSTALLATION
INSTRUCTIONS
201 Lennox Industries Inc.
Dallas, Texas, USA
®
Elite Series XC14 Units
AIR CONDITIONER
506636−01
Litho U.S.A.
07/11
Supersedes 11/10
TABLE OF CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Shipping and Packing List . . . . . . . . . . . . . . . . . . . . . . 1
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Model Number Identification . . . . . . . . . . . . . . . . . . . . 2
Unit Parts A
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Unit Dimensions − Inches (mm) LIQUID LINE CONNECTION C ELECTRICAL INLETS A SUCTION LINE CONNECTION 4−3/4" 4−1/2" (121) (108) B TOP VIEW SIDE VIEW UNIT SUPPORT UNIT SUPPORT FEET FEET D 8−1/2" 9−1/2" K (216) (241) 8−3/4 8−1/4" E (222) (210) J 5−1/2" F G H 13−1/2" (140) (343) XC14−024 TO −060 BASE WITH XC14−018 BASE SECTION ELONGATED LEGS XC14 Dimensions − in. (mm) Model A B C D E F G H J K 27 28 XC14−018−230 31 (787) See XC14−018 base section above. (686) (711) XC14−024−230 35 (889) XC14−030−230
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Typical Unit Parts Arrangement CONTROL PANEL SINGLE POLE CONTACTOR−1POLE (K1−1) GROUND LUG DUAL RUN CAPACITOR (C12) THERMAL PROTECTION SWITCH (S173) (ONLY ON −036 AND −060) SWITCH COVER COMPRESSOR DISCHARGE LINE COMPRESSOR HARNESS MUFFLER THERMAL PROTECTION SWITCH (S5) CRANKCASE HEATER THERMO- STAT (S40) (−041, −047, −048 AND −060 UNITS ONLY) LIQUID LINE FILTER DRIER (SINGLE−FLOW) HIGH PRESSURE SWITCH (S4) LIQUID LINE SERVICE VALVE SUCTION LINE SERVICE VALVE FIELD CONNECTION FIELD CONNECTION FOR
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IMPORTANT WARNING Electric Shock Hazard. Can cause injury To prevent stripping of the various caps used, the or death. Unit must be grounded in appropriately sized wrench should be used and fitted accordance with national and local snugly over the cap before tightening. codes. Table 1. Torque Requirements Line voltage is present at all components Parts Recommended Torque when unit is not in operation on units with single-pole contactors. Disconnect all Service valve cap 8 ft.− lb. 11 NM remote e
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Operating Angle Type Service Valve: 1. Remove stem cap with an appropriately sized wrench. 2. Use a service wrench with a hex−head extension (3/16" for liquid line valve sizes and 5/16" for vapor line valve sizes) to back the stem out counterclockwise as far as it will go. SERVICE PORT CAP SERVICE PORT CORE (VALVE STEM SHOWN TO INDOOR CLOSED) INSERT HEX (VALVE STEM SHOWN OPEN) UNIT WRENCH HERE INSERT HEX WRENCH HERE SERVICE PORT STEM CAP CORE TO OUTDOOR UNIT ANGLE−TYPE SERVICE VALVE ANGLE−TYPE S
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Recovering Refrigerant from Existing System CONNECT MANIFOLD GAUGE SET DISCONNECT POWER Disconnect all power to the existing outdoor unit at the disconnect Connect a gauge set, clean recovery cylinder and a recovery 12 switch or main fuse box/breaker panel. machine to the service ports of the existing unit. Use the instructions provided with the recovery machine to make the connections. MAIN FUSE BOX/BREAKER PANEL MAIN FUSE MANIFOLD GAUGES BOX/BREAKER PANEL RECOVERY MACHINE DISCONNECT LOW HIGH S
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CLEARANCE ON ALL SIDES INCHES (MILLIMETERS) 6 (152) ACCESS PANEL MINIMUM CLEARANCE NOTES: CONTROL PANEL ABOVE UNIT ACCESS Clearance to one of the other three LOCATION 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). 48 (1219) LINE SET 36 (914) CONNECTIONS MINIMUM CLEARANCE BETWEEN TWO UNITS 24 (610) Figure 4. Installation Clearances PLACING UNIT ON SLAB Unit Placement When ins
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Outside Unit Placement DETAIL A Slab Mounting at Ground Level DETAIL B Install unit away from windows. Install unit level or, if on a slope, maintain slope tolerance of two (2) degrees (or two inches per five feet [50 mm per 1.5 m]) away from building structure. BUILDING STRUCTURE MOUNTING SLAB GROUND LEVEL TWO 90° ELBOWS INSTALLED IN LINE SET WILL REDUCE LINE SET VIBRATION. STABILIZING UNIT ON UNEVEN SURFACES Elevated Slab Mounting DETAIL C using Feet Extenders Slab Side Mounting DETAIL
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ROOF MOUNTING Removing and Installing Panels Install the unit a minimum of 6 inches (152 mm) above the IMPORTANT roof surface to avoid ice build−up around the unit. Locate the unit above a load bearing wall or area of the roof that Do not allow panels to hang on unit by top tab. Tab is for can adequately support the unit. Consult local codes for alignment and not designed to support weight of panel. rooftop applications. WARNING To prevent personal injury, or damage to panels, unit or NOTICE str
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Field refrigerant piping consists of liquid and vapor lines New or Replacement Line Set from the outdoor unit to the indoor unit coil (braze connections). Use Lennox L15 (sweat, non−flare) series REFRIGERANT LINE SET line set, or field−fabricated refrigerant line sizes as listed in table 2. This section provides information on installation or replacement of existing line set. If new or replacement line NOTE When installing refrigerant lines longer than 50 set is not being installed then procee
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Line Set Isolation The following illustrations are examples of proper refrigerant line set isolation: REFRIGERANT LINE SET TRANSITION REFRIGERANT LINE SET INSTALLING VERTICAL RUNS (NEW CONSTRUCTION SHOWN) FROM VERTICAL TO HORIZONTAL NOTE Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the ANCHORED HEAVY NYLON temperature of the liquid line or when pressure drop is equal to or greater WIRE TIE OR AUTOMOTIVE AUTOMOTIVE
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Brazing Connections IMPORTANT Use the procedures outline in figures 8 and 9 for brazing line set connections to service valves. Connect gauge set low pressure side to vapor line service valve and repeat procedure starting at paragraph 4 for brazing the liquid line to service port WARNING valve. Polyol Ester (POE) oils used with HFC−410A refrigerant absorb moisture very quickly. It is very important that the refrigerant system be kept closed IMPORTANT as much as possible. DO NOT remove line set c
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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 2 1 and debur the ends. The pipe must remain round. Do not crimp end both the suction / vapor and liquid line of the line. service ports. CUT AND DEBUR SERVICE PORT SERVICE PORT CAP CORE LINE SET SIZE MATCHES SERVICE VALVE CONNECTION SERVICE SERVICE VALVE PORT CONNECTION CORE SERVICE COPPER TUBE PORT CAP STUB LIQUID LINE SERVICE SUCTION / VAPOR LINE VALVE SERV
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WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water saturated cloths around service valve bodies and copper tube stubs. Use 4 additional water saturated cloths 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 5 out of the suction / vapor valve stem port. See steps 3A, 3B and 3C on manifold gauge set conne
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VAPOR LIQUID Flushing Line Set and Indoor Coil TYPICAL EXISTING FIXED ORIFICE TYPICAL EXISTING EXPANSION VALVE REMOVAL REMOVAL PROCEDURE (UNCASED OR PROCEDURE (UNCASED COIL SHOWN) 1B 1A COIL SHOWN) STUB END TWO PIECE PATCH PLATE LIQUID LINE EXPANSION DISTRIBUTOR TUBES (UNCASED COIL ONLY) ORIFICE VALVE LIQUID LINE ORIFICE HOUSING HOUSING DISTRIBUTOR TUBES ® TEFLON ® TEFLON RING RING FIXED ORIFICE BRASS NUT ® TEFLON SENSING RING LINE DISTRIBUTOR ASSEMBLY DISTRIBUTOR EQUALIZER ASSEMBLY LINE REMOVE
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Installing Indoor Metering Device This outdoor unit is designed for use in systems that use See the Lennox XC14 Engineering Handbook for either fixed orifice or expansion valve metering devices at approved expansion valve kit match−ups. The expansion the indoor coil. valve unit can be installed internal or external to the indoor coil. In applications where an uncased coil is being If using a fixed orifice metering device, use the the one installed in a field−provided plenum, install the expansi
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Leak Test Line Set and Indoor Coil IMPORTANT The Environmental Protection Agency (EPA) prohibits WARNING the intentional venting of HFC refrigerants during maintenance, service, repair and disposal of appliance. When using a high pressure gas such as Approved methods of recovery, recycling or reclaiming dry nitrogen to pressurize a refrigeration must be followed. or air conditioning system, use a regulator that can control the pressure down to 1 or 2 psig (6.9 to 13.8 kPa). IMPORTANT If this un
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Evacuating Line Set and Indoor Coil CONNECT GAUGE SET LOW HIGH NOTE Remove cores from service valves (if not already done). 1 A Connect low side of manifold gauge set with 1/4 SAE in−line tee to vapor line service valve B Connect high side of manifold gauge OUTDOOR set to liquid line service valve MANIFOLD A34000 1/4 SAE TEE WITH UNIT GAUGE SET C Connect micron gauge available SWIVEL COUPLER connector on the 1/4 SAE in−line tee. A D Connect the vacuum pump (with 500 vacuum gauge) to the cente
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temperatures and pressures present during operation of IMPORTANT an air conditioning system. Non−condensables and water suction combine with refrigerant to produce substances Use a thermocouple or thermistor electronic vacuum that corrode copper piping and compressor parts. gauge that is calibrated in microns. Use an instrument capable of accurately measuring down to 50 microns. Electrical In the U.S.A., wiring must conform with current local codes and the current National Electric Code (NEC). I
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XC13 XC13 XC13 XC13 XC13 XC13 XC13 NOTE − Refer to furnace, blower coil and accessory instructions for additional wiring configurations with other optional controls. Figure 14. 24VAC Control Wiring Diagrams (Field Installed) DUAL RUN CAPACITOR (C12) FAN MOTOR (B4) CONTACTOR K1 THERMAL PROTECTION SWITCH (S5) HIGH PRESSURE SWITCH (S4) GROUND LUG COMPRESSOR −048 AND −060 (B1) ONLY CRANKCASE CRANKCASE THERMOSTAT HEATER (HR1) (S40) Figure 15. Typical Factory Wiring Diagram (Copeland Compressor) Page
