Lenox Elite Series manual

07/ 1 1 506636−01 *2P0711* *P506636-01* Page 1  20 1 Lennox Industries Inc. Dallas, T exas, USA RET AIN THESE INSTRUCTIONS FOR FUTURE REFERENCE These instructions are intended as a general guide and do not supersede local codes in any way . Consult authorities having jurisdiction before inst allation. W ARNING Improper installation, adjustment[...]

Page 2 506636−01 Unit Dimensions − Inches (mm) ELECTRICAL INLETS SIDE VIEW SUCTION LINE CONNECTION LIQUID LINE CONNECTION 4−1/2" (108) 4−3/4" (121) TOP VIEW UNIT SUPPORT FEET 8−1/2" (216) D G K J E F XC14−018 BASE SECTION 8−3/4 (222) 5−1/2" (140) 9−1/2" (241) 8−1/4" (210) 13−1/2" (343) UNIT S[...]

Page 3 XC14 SERIES T ypical Unit Parts Arrangement LIQUID LINE FIL TER DRIER (SINGLE−FLOW) FIELD CONNECTION FOR LIQUID LINE SET LIQUID LINE SERVICE VA LV E SUCTION LINE SER VICE V AL VE FIELD CONNECTION FOR SUCTION LINE MUFFLER HIGH PRESSURE SWITCH (S4) COMPRESSOR HARNESS GROUND LUG SINGLE POLE CONT ACT OR−1POLE (K1−1) DUAL RUN CAP ACITOR (C1[...]

Page 4 506636−01 W ARNING Electric Shock Hazard. Can cause injury or death. Unit must be grounded in accordance with national and local codes. Line volt age is present at all component s when unit is not in operation on units with single-pole contactors. Disconnect all remote electric power supplies before opening access panel. Unit may have mult[...]

Page 5 XC14 SERIES (V AL VE STEM SHOWN CLOSED) INSERT HEX WRENCH HERE SERVICE PORT CORE SER VICE PORT CAP ANGLE−TYPE SERVICE V A L VE (FRONT−SEA TED CLOSED) SER VICE PORT CORE TO OUTDOOR UNIT STEM CAP (V A L VE STEM SHOWN OPEN) INSER T HEX WRENCH HERE TO INDOOR UNIT ANGLE−TYPE SERVICE VALVE (BACK−SEATED OPENED) BALL (SHOWN CLOSED) SER VICE [...]

Page 6 506636−01 Recovering Refrigerant from Existing System MAIN FUSE BOX/BREAKER P ANEL Disconnect all power to the existing outdoor unit at the disconnect switch or main fuse box/breaker panel. DISCONNECT POWER CONNECT MANIFOLD GAUGE SET MANIFOLD GAUGES RECOVER Y MACHINE CLEAN RECOVERY CYLINDER OUTDOOR UNIT HIGH LOW Connect a gauge set, clean [...]

Page 7 XC14 SERIES CONTROL P ANEL ACCESS LOCA TION 6 (152) 36 (914) 12 (305) 30 (762) LINE SET CONNECTIONS 24 (610) 48 (1219) MINIMUM CLEARANCE BETWEEN TWO UNITS CLEARANCE ON ALL SIDES  INCHES (MILLIMETERS) ACCESS P ANEL MINIMUM CLEARANCE ABOVE UNIT NOTES:  Clearance to o ne of the o ther three sides must be 36 inches (914mm).  Clearance t[...]

Page 8 506636−01 LEG DET AIL BASE 2" (50.8MM) SCH 40 FEMALE THREADED ADAPTER Concrete slab  use two plastic anchors (hole drill 1/4") W ood or plastic slab  no plastic anchor (hole drill 1/8") COIL BASE P AN CORNER POST ST ABILIZING BRACKET (18 GAUGE MET AL  2" WIDTH; HEIGHT AS REQUIRED)  Slab Side Mounting #10 1/2[...]

Page 9 XC14 SERIES ROOF MOUNTING Install the unit a minimum of 6 inches (152 mm) above the roof surface to avoid ice build−up around the unit. Locate the unit above a load bearing wall or area of the roof that can adequately support the unit. Consult local codes for rooftop applications. NOTICE Roof Damage! This syst em contains both ref rigerant[...]

Page 10 506636−01 New or Replacement Line Set REFRIGERANT LINE SET This section provides information on installation or replacement of existing line set. If new or replacement line set is not being installed then proceed to Brazing Connections on p age 12. IMPORT ANT Lennox highly recommends changing line set when converting the existing system f[...]

Page 1 1 XC14 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 illustr[...]

Page 12 506636−01 Brazing Connections Use the procedures outline in figures 8 and 9 for brazing line set connections to service valves. W ARNING Polyol Ester (POE) oils used with HF C−410A refr igerant absorb moisture very quickly . It is very important that the refrigerant sy stem be kept closed as much as possible. DO NOT remove line set cap [...]

Page 13 XC14 SERIES A TTACH 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 POR T MUST BE OPEN TO ALLOW EXIT POINT FOR NITROGEN A Connect gauge set low pres[...]

Page 14 506636−01 WHEN BRAZING LINE SET T O SER VICE V A L VES, POINT FLAME A WA Y FROM SERVICE V AL V E. LIQUID LINE SERVICE V A L VE LIQUID LINE BRAZE LINE SET W rap both service valves with water saturated cloths as illustrated here and as mentioned in step 4, before brazing to line set . Water saturated cloths must remain water saturated thro[...]

Page 15 XC14 SERIES Flushing Line Set and Indoor Coil 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 access and plumbing panels. B Remove an[...]

Page 16 506636−01 Installing Indoor Metering Device This outdoor unit is designed for use in systems that use either fixed orifice or exp ansion valve metering devices at the indoor coil. If using a fixed orifice metering device, use the the one provided with the out door unit. The metering device is located in the inst allation instruction bag. [...]

Page 17 XC14 SERIES IMPORT ANT The Environmental Protection Agency (EP A) prohibit s the intentional venting of HFC refrigerants during maintenance, service, repair and disposal of appliance. Approved methods of recovery , recycling or reclaiming must be followed. IMPORT ANT If this unit is being matc hed with an approved line set or indoor unit co[...]

Page 18 506636−01 Evacuating Line Set and Indoor Coil A Open both manifold valv es and star t the vac uum pump. 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 i[...]

Page 19 XC14 SERIES IMPORT ANT Use a thermocouple or thermistor electronic vacuum gauge that is calibrated in microns. Use an instrument capable of accurately measuring down to 50 microns. W ARNING Danger of Equipm ent Damage. A void deep vacuum operation. Do not use compressors to evacuate a system. Extremely low vacuums can cause intern al arcing[...]

Page 20 506636−01 NOTE − Refer to furnace, blower coil and accessory instructions for additional wiring configurations with other optional controls. XC13 XC13 XC13 XC13 XC13 XC13 XC13 Figure 14. 24V AC Control Wiring Diagrams (Field Installed) HIGH PRESSURE SWITCH (S4) CRANKCASE THERMOST A T (S40) CRANKCASE HEA TER (HR1) DUAL RUN CAP ACITOR (C1[...]

Page 21 XC14 SERIES THERMAL PROTECTION SWITCH (S5 OR S173) HIGH PRESSURE SWITCH (S4) CRANKCASE THERMOST A T (S40) CRANKCASE HEA TER (HR1) DUAL RUN CAP ACITOR (C12) F AN MOTOR (B4) COMPRESSOR (B1) CONT ACT OR K1 GROUND LUG Figure 16. T ypical Factory Wiring Diagram (Interlink Compressor)[...]

Page 22 506636−01 Figure 17. T ypical Unit Wiring Diagram[...]

Page 23 XC14 SERIES Servicing Unit s Delivered V oid of Charge If the out door unit is void of refrigerant, clean the system using the procedure described below . 1. Leak check system using procedure outlined on page 17. 2. Evacuate the system using procedure outlined on page 18. 3. Use nitrogen to break the vacuum and install a new filter drier in[...]

Page 24 506636−01 WHEN T O CHARGE?  W arm weather best  Can charge in colder weather CHARGE METHOD? Determine by:  Metering device type  Outdoor ambient temperature REQUIREMENTS:  Suf ficient heat load in structure  Indoor temperature between 70-80ºF (21−26ºC)  Manifold gauge set connected to unit  Thermometers: − to[...]

Page 25 XC14 SERIES CHECKING AIR FLOW A T INDOOR COIL Check airflow using the Delta−T ( D T) process using the illustration in figure 20. 1. Determine the desired D T Measure entering air temper- ature using dry bulb ( A ) and wet bulb ( B ). D T is the intersect- ing value of A and B in the t able (see triangle). 2. Find temperature drop acro[...]

Page 26 506636−01 DO NOT CHARGE UNIT (Results of charging at low temperatures not reliable) ST ART : Measure outdoor ambient temperature USE WEIGH-IN METHOD Weigh-in or remove refrigerant based upon line length APPº (Approach) V alues(F:+/−1.0° [C: +/−0.6°]) 1. Connect gauge set as illustrated in figure 18. 2. Confirm proper airflow across[...]

Page 27 XC14 SERIES ST ART : Measure out door ambient temperature NOTE − Do not attempt to charge system where a dash appears, system could be overcharged. Superheat is taken at suction line service port. Suction line superheat must never be less than 5º F at the suction line service port. USE WEIGH-IN METHOD Weigh-in or remove refrigerant based[...]

Page 28 506636−01 T able 4. Normal Operating Pressures (Liquid +10 and Suction +5 psig) IMPORT ANT Use this t able to perform maintenance checks; it is not a procedur e for charging the system. Minor variations in these pressures may be due to dif ferences in instal lations. Significant deviations could mean that the syst em is not properly charg[...]

Page 29 XC14 SERIES When liquid line temperature drops below 50°F the thermostat closes energizing HR1. The thermostat will open, de−energizing HR1 once liquid line temperature reaches 70°F . Liquid Line Filter Drier A filter drier is factory-installed as illustrated in Unit Dimensions on page 2, with each XC14 unit to ensure a clean, moisture?[...]

Page 30 506636−01 at the indoor unit (installed internal or external to the cabinet) or behind a return air grille in the wall or ceiling. Check the filter monthly and clean or replace it as needed. 2. Disposable Filter  Disposable filters should be replaced with a filter of the same type and size. NOTE  If you are unsure about the filter r[...]