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Lenox 50677201 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    08/1 1 506772−01 *2P0811* *P506772-01* Page 1  201 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

    Page 2 506728−01 Model Number Identification P 14 036 − − Unit T ype P = Heat Pump Outdoor Unit Series Nominal Cooling Capacity 018 = 1.5 tons 024 = 2 tons 030 = 2.5 tons 036 = 3 tons 042 = 3.5 tons 048 = 4 tons 060 = 5 tons Minor Revision Number 230 V olt age 230 = 208/230V−1ph−60hz Refrigerant T ype X = HFC−410A X 08 − Unit Dimensio[...]

  • Page 3

    Page 3 XP14 SERIES T ypical Unit Parts Arrangement LIQUID LINE FIL TER DRIER (BI−FLOW) FIELD CONNECTION FOR LIQUID LINE SET LIQUID LINE SER VICE V AL VE REVERSING VA LV E FIELD CONNECTION FOR V APOR LINE (BALL−TYPE −060 ONL Y) HIGH PRESSURE SWITCH (AUTO−RESET) (S4) GROUND LUG CONT ACT OR− 1POLE (K1−1) CAP ACIT OR (C12) CONTROL P ANEL PL[...]

  • Page 4

    Page 4 506728−01 Caps and Fasteners T orque Requirements When servicing or repairing HV AC equipment and component s, ensure the fasteners are appropriately tightened. T able 1 list torque values for various caps and fasteners. T able 1. T orque Re quire ment s Part s Recommended Tor que Service valve cap 8 ft.− lb. 11 N M Sheet metal screws 16[...]

  • Page 5

    Page 5 XP14 SERIES T o Access Service Po rt: A service port cap protect s the service port core from contamination and serves as the primary leak seal. 1. Remove service port cap wi th an appropr iately siz ed wrench. 2 . Connect gauge set to serv ice port. 3 . W hen t est ing is c om pleted, replace service port cap a nd tighten as follows:  Wi[...]

  • Page 6

    Page 6 506728−01 Recovering Refrigerant from Existing System Disconnect all power to the existing outdoor unit at the disconnect switch and/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 manifold gauge set, clean recovery cylinde[...]

  • Page 7

    Page 7 XP14 SERIES New Out door Unit Placement CAUTION In order to avoid injury , take proper precaution when lif t - ing heavy object s. Remove existing out door unit prior to placement of new outdoor unit. See Unit Dimensions on p age 2 for sizing mounting slab, plat forms or support s. Refer to figure 5 for mandatory installation clearance requi[...]

  • Page 8

    Page 8 506728−01 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

    Page 9 XP14 SERIES Removing and Installing Panels LOUVERED P ANEL REMOV AL Remove the louvered panels as follows: 1. Remove two screws, allowing the panel to swing open slightly . 2. Hold the panel firmly throughout this procedure. Rotate bottom corner of panel away from hinged corner post until lower three tabs clear the slots as illustrated in de[...]

  • Page 10

    Page 10 506728−01 Line Set Requirements This section provides information on: inst allation of new or replacement line set.  Adding Polyol ester oil requirements  New or replacement line set installation  Using existing line set. ADDING POL YOL ESTER OIL REQUIREMENTS IMPORT ANT Mineral oils are not compatible with HFC−410A . If oil mus[...]

  • Page 11

    Page 1 1 XP14 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

    Page 12 506728−01 Brazing Connections Use the procedures outline in figures 9 and 10 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 line set [...]

  • Page 13

    Page 13 XP14 SERIES 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 TTACH GAUGES INDOOR UNIT SUCTION / V APOR SER VICE PORT MUST BE OPEN TO ALLOW EXIT POINT FOR NITROGEN A Connect gauge set low pres[...]

  • Page 14

    Page 14 506728−01 WHEN BRAZING LINE SET TO SER VICE V A L VES, POINT FLAME A W A Y FROM SER VICE V AL VE. LIQUID LINE SERVICE V AL 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 throu[...]

  • Page 15

    Page 15 XP14 SERIES Indoor Refrigerant Metering Device Removal and Flushing Line Set and Indoor Coil Flushing is only required when the existing system used HCFC−22 refrigerant. If the existing system used HFC−410a, then remove the original indoor coil metering device and proceed to Installing New Indoor Metering Device on page 16 . SENSING LIN[...]

  • Page 16

    Page 16 506728−01 Installing New Indoor Metering Device This out door unit is designed for use in HFC−410A systems that use a check / exp ansion valve metering device (purchased sep arately) at the indoor coil. See t he Lennox XP14 Engineering Handbook fo r ap p r o v e d ch e c k / exp a n s i o n val v e ki t ma t c h − u p s . The check / [...]

  • Page 17

    Page 17 XP14 SERIES Leak T est Line Set and Indoor Coil IMPORT ANT Leak detector must be cap able of sensing HFC refrigerant . TO V APOR SER VICE V AL VE (ANGLE OR BALL TYPE) HFC−410A MANIFOLD GAUGE SET OUTDOOR UNIT HIGH LOW NITROGEN A Connect an HFC−410A manifold gauge set high pressure hose to the vapor valve service port. NOTE  Normally ,[...]

  • Page 18

    Page 18 506728−01 Evacuating Line Set and Indoor Coil Evacuating the system of non−condensables is critical for proper operation of the unit. Non−condensables are defined as any gas that will not condense under temperatures and pressures present during operation of an air conditioning system. Non−condensables and water suction combine with [...]

  • Page 19

    Page 19 XP14 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

    Page 20 506728−01 Figure 15. T ypical Unit Wiring Diagram[...]

  • Page 21

    Page 21 XP14 SERIES Figure 16. T ypical Factory Wiring (Copeland Compressor)[...]

  • Page 22

    Page 22 506728−01 Figure 17. T ypical Factory Wiring (Interlink Compressor)[...]

  • Page 23

    Page 23 XP14 SERIES W ARNING Electric Shock Hazard. Can cause injury or death. Unit must be grounded in accordance with national and local codes. Line voltage is present at all component s when unit is not in operation on units w ith single-pole cont actors. Disconnect all remote electric power supplies before opening access panel. Unit may have mu[...]

  • Page 24

    Page 24 506728−01 3. Inspect all factory− and field−inst alled wiring for loose connections. 4. Open the high side manifold gauge valve and weigh in liquid refrigerant. Use figure 20 to calculate the correct weigh−in charge. 5. Close manifold gauge valves. 6. Monitor the system to determine the amount of moisture remaining in the oil. It ma[...]

  • Page 25

    Page 25 XP14 SERIES NOTE − Use gauge ports on vapor line valve and liquid valve for evacuating refrigerant lines and indoor coil. Use true suction port to measure vapor pressure during charging. OUTDOOR COIL CHECK / EXP ANSION VA LV E BI−FLOW FIL TER / DRIER COMPRESSOR REVERSING V AL VE MUFFLER NOTE − ARROWS INDICA TE DIRECTION OF REFRIGERANT[...]

  • Page 26

    Page 26 506728−01 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 across coil Measure the coil’s dry bulb entering and leaving air temperatures ( A and C ). T em- perature Drop Formula:[...]

  • Page 27

    Page 27 XP14 SERIES APPROVED MA TCHED SYSTEM COMPONENTS, T ARGETED SUBCOOLING (SC) V ALUES AND ADD CHARGE V ALUES Listed below are the approved matched system component s (air handlers and indoor coils), targeted subcooling and add charge values for the XP14. This information is also listed on the unit charging sticker located on the out door unit [...]

  • Page 28

    Page 28 506728−01 T able 5. Indoor Unit Matches, T argeted Subcooling, and Add Charge V alues OD Size Indoor Model # Subcool Additional Charge OD Size Indoor Model # Subcool Additional Charge OD Size Indoor Model # Subcool Additional Charge Heat Cool Heat Cool Heat Cool −018 CBX27UH−018 13 14 1 9 −030 CH33−43C 4 9 1 12 −042 CH33−60D 1[...]

  • Page 29

    Page 29 XP14 SERIES auto−reset switch closes when the compressor casing temperature falls to 151−187°F (66°C−86°C), and the compressor is re−energized. This single−pole, single−throw (SPST) bi−met allic switch is wired in series with the 24V Y input signal to control compressor operation. Crankcase Thermostat (S40) (−036, −042,[...]

  • Page 30

    Page 30 506728−01 Pressure Switch Circuit The defrost control incorporates two pressure switch circuits. The high pressure switch (S4) is factory-connected to the defrost control’s HI PS terminals (see figure 24). The defrost control also includes a low pressure, or loss-of-charge-pressure, switch (S87). Switches are shown in wiring diagrams in[...]

  • Page 31

    Page 31 XP14 SERIES Outdoor Coil Th e out door unit must be properly maintained to ensure it s proper operation.  Please cont act your dealer to schedule proper inspection and maintenance for your equipment.  Make sure no obstructions restrict airflow to the outdoor unit.  Grass clippings, leaves, or shrubs crowding the unit can cause the [...]

  • Page 32

    Page 32 506728−01 S tart−Up and Performance Checklist Job Name Job no. Date Job Location City S tate Installer City S tate Unit Model No. Serial No. Service T echnician Nameplate V olt age Rated Load Ampacity Compressor Amperage: Maximum Fuse or Circuit Breaker Electrical Connections T ight?  Indoor Filter clean?  Supply V oltage (Unit Of[...]