Instruction/ maintenance manual of the product 50677201 Lenox
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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.
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.
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.
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.
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.
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.
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.
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 d.
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 .
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 .
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 .
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.
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.
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 .
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 .
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 .
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.
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.
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.
Page 20 506728−01 Figure 15. T ypical Unit Wiring Diagram.
Page 21 XP14 SERIES Figure 16. T ypical Factory Wiring (Copeland Compressor).
Page 22 506728−01 Figure 17. T ypical Factory Wiring (Interlink Compressor).
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.
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.
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.
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 ).
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.
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 Siz.
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.
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).
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.
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.
An important point after buying a device Lenox 50677201 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lenox 50677201 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lenox 50677201 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lenox 50677201 you will learn all the available features of the product, as well as information on its operation. The information that you get Lenox 50677201 will certainly help you make a decision on the purchase.
If you already are a holder of Lenox 50677201, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lenox 50677201.
However, one of the most important roles played by the user manual is to help in solving problems with Lenox 50677201. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lenox 50677201 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
