Lenox 506637-01 manuale d’uso

1 1/10 506637−01 *2P1110* *P506637-01* Page 1  2010 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 506637−01 1 1/10 Unit Dimensions − Inches (mm) ELECTRICAL INLETS SIDE VIEW SUCTION LINE CONNECTION LIQUID LINE CONNECTION 4−1/2" (108) 4−3/4" (121) TOP VIEW D G K J E F UNIT SUPPORT FEET XC14−024 T O −060 BASE WITH ELONGA TED LEGS H A B C Model Number A B C D E F G H J K XC16−024−230 39 (991) 30−1/2 ( 775) 35 (889[...]

Page 3 XC16 SERIES T ypical Unit Part s 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 HIGH PRESSURE SWITCH (MANUAL RESET) (S4) COMPRESSOR HARNESS GROUND LUG SINGLE POLE CONT ACT OR (K1) DUAL RUN CAP ACIT OR (C12) CO[...]

Page 4 506637−01 1 1/10 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 ha[...]

Page 5 XC16 SERIES (V AL VE STEM SHOWN CLOSED) INSERT HEX WRENCH HERE SERVICE PORT CORE SER VICE PORT CAP ANGLE−TYPE SERVICE V AL VE (FRONT−SEA TED CLOSED) SER VICE PORT CORE TO OUTDOOR UNIT STEM CAP (V AL VE STEM SHOWN OPEN) INSER T HEX WRENCH HERE TO INDOOR UNIT ANGLE−TYPE SERVICE VALVE (BACK−SEATED OPENED) BALL (SHOWN CLOSED) SER VICE PO[...]

Page 6 506637−01 1 1/10 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,[...]

Page 7 XC16 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 on e of t he oth er three sides must be 36 inches (914mm).  Clearance [...]

Page 8 506637−01 1 1/10 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 [...]

Page 9 XC16 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 refr igerant[...]

Page 10 506637−01 1 1/10 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 s[...]

Page 1 1 XC16 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 506637−01 1 1/10 Brazing Connections Use the procedures outline in figures 7 and 8 for brazing line set connections to service valves. W ARNING Polyol Ester (POE) oils used with HF C−410A refr igerant absorb moistur e very qui ckly . It is very important that the refrigerant sy stem be kept closed as much as possibl e. DO NOT remove lin[...]

Page 13 XC16 SERIES A TT ACH THE MANIFOLD GAUGE SET FOR BRAZING LIQUID AND SUCTION / V APOR LINE SER VICE 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 TTACH GAUGES INDOOR UNIT SUCTION / V APOR SER VICE PORT MUST BE OPEN TO ALLOW EXIT POINT FOR NITROGEN A Connect gauge set low pre[...]

Page 14 506637−01 1 1/10 WHEN BRAZING LINE SET TO SER VICE V AL VES, POINT FLAME A WA Y FROM SERVICE V AL VE. LIQUID LINE SERVICE V AL V E 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 [...]

Page 15 XC16 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 506637−01 1 1/10 Installing Indoor Metering Device This outdoor unit is designed for use in systems that use exp ansion valve metering devices at the indoor coil. See the Lennox XC16 Engineering Handbook for approved exp ansion valve kit matc h−ups. The expansion valve unit can be installed internal or external to the indoor coil. In ap[...]

Page 17 XC16 SERIES IMPORT ANT The Environmental Protection Agency (EP A) prohibits 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 bei ng matched wi t h an approved line set or indoor unit c[...]

Page 18 506637−01 1 1/10 Evacuating Line Set and Indoor Coil A Open both manifold valv es 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 [...]

Page 19 XC16 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 Equipment Damage. A void deep vacuum operation. Do not use compressor s to evacuat e a system. Extremely low vacuums can cause internal arcing[...]

Page 20 506637−01 1 1/10 ƒ ⁄ Figure 13. T ypical Unit Wiring Diagram[...]

Page 21 XC16 SERIES HIGH PRESSURE SWITCH (S4) LOW PRESSURE SWITCH (S87) CRANKCASE THERMOST A T (S40) CRANKCASE HEA TER (HR1) COMPRES - SOR (B1) DUAL RUN CAP ACI- T OR (C12) F AN MOTOR (B4) CONT ACTOR K1 GROUND LUG Figure 14. T ypical Factory Wiring Diagram Servicing Units Delivered V oid of Charge If the out door unit is void of refrigerant, clean [...]

Page 22 506637−01 1 1/10 6. Set the thermostat for a cooling demand. T urn on power to the indoor indoor unit and close the outdoor unit disconnect switch to start the unit. 7. Recheck voltage while the unit is running. Power must be within range shown on the nameplate. 8. Check system for sufficient refrigerant by using the procedures listed und[...]

Page 23 XC16 SERIES CHECKING AIR FLOW A T INDOOR COIL Check airflow using the Delta−T ( D T) process using the illustration in figure 17. 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 24 506637−01 1 1/10 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 15. 2. Confirm proper airflow[...]

Page 25 XC16 SERIES T a b l e 3. HFC−410A T emperature (°F) − Pressure (Psig) °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig 32 100.8 48 137.1 63 178.5 79 231.6 94 290.8 11 0 365.0 125 445.9 141 545.6 33 102.9 49 139.6 64 181.6 80 235.3 95 295.1 111 370.0 126 451.8 142 552.3 34 105.0 50 142.2 65 184.3 81 239.0 96 299.4[...]

Page 26 506637−01 1 1/10 UNIT COMPONENTS IMPORT ANT Some scroll compressor have internal vacuum protector that will unload scrolls when suction pressure goes below 20 psig. A hissing sound will be heard when the compressor is running unloaded. Protector will reset when low pressure in system is raised above 40 psig. DO NOT REPLACE COMPRESSOR. The[...]

Page 27 XC16 SERIES  Digit al volt/amp meter  Electronic temperature thermometer  On-off toggle switch Procedure NOTE − Block outdoor coil to maint ain a minimum of 375 p sig during testing). 1. Turn main power OFF to outdoor unit. 2. Adjust room thermostat set point 5ºF above the room temperature. 3. Remove control access panel. Inst a[...]

Page 28 506637−01 1 1/10 Accessories For update−to−date information, see any of the following publications:  Lennox XC16 Engineering Handbook  Lennox Product Catalog  Lennox Price Book Checklists T wo−Stage Modulation Compressors Field Operational Checklist Unit Readings Y1 − First-St age Expected results during Y2 demand (T oggl[...]