Lennox Elite XC16 Installation Instructions Manual
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Lennox Elite XC16 Installation Instructions Manual

Elite series
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E2009 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Improper
installation,
service or maintenance can cause personal injury,
loss of life, or damage to property.
Installation and service must be performed by a
licensed professional installer (or equivalent) or a
service agency.
CAUTION
Physical contact with metal edges and corners
while applying excessive force or rapid motion can
result in personal injury. Be aware of, and use
caution when working near these areas during
installation or while servicing this equipment.
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox Engineering Handbook. Coils
previously charged with HCFC−22 must be
flushed.
IMPORTANT
The Clean Air Act of 1990 bans the intentional
venting of refrigerant (CFCs, HCFCs and HFCs) as
of July 1, 1992. Approved methods of recovery,
recycling or reclaiming must be followed. Fines
and/or
incarceration
noncompliance.
07/09
*2P0709*
adjustment,
alteration,
may
be
levied
for
INSTALLATION
INSTRUCTIONS
®
Elite
Series XC16 Units
AIR CONDITIONER
506101−01
07/09

Table of Contents

Shipping and Packing List
XC16 Outdoor Unit
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Shipping and Packing List
Check the unit for shipping damage and listed times below
are intact. If damaged, or if parts are missing, immediately
contact the last shipping carrier.
S
Assembled outdoor unit
XC16 Outdoor Unit
The XC16 Air Conditioners, which will also be referred to in
this instruction as the outdoor unit, uses HFC−410A
refrigerant. This outdoor unit must be installed with a
matching indoor unit and line set as outlined in the XC16
Engineering Handbook. XC16 Air Conditioners are
designed for use in thermal expansion valve (TXV)
systems.
NOTE − The XC16 outdoor unit is rated for 230V
applications only. A hard-start kit is required for
applications where the supply voltage is less than 230V.
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*P506101-01*
Litho U.S.A.
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Summary of Contents for Lennox Elite XC16

  • Page 1: Table Of Contents

    INSTALLATION INSTRUCTIONS E2009 Lennox Industries Inc. Dallas, Texas, USA ® Elite Series XC16 Units AIR CONDITIONER 506101−01 Litho U.S.A. 07/09 Supersedes 04/08 Table of Contents Shipping and Packing List ..... .

  • Page 2: Supersedes

    Sheet metal screws 16 in.− lb. 2 NM your supervisor. Machine screws #10 28 in.− lb. 3 NM Lennox Industries Inc. Compressor bolts 90 in.− lb. 10 NM P.O. Box 799900 Gauge port seal cap 8 ft.− lb. 11 NM Dallas, TX 75379−9900...
  • Page 3 USING MANIFOLD GAUGE SETS SERVICE PORT CAP When checking the system charge, only use a manifold gauge set that features low loss anti−blow back fittings. SERVICE PORT SERVICE PORT See figure 27 for a typical manifold gauge connection CORE setup. CLOSED TO BOTH (VALVE STEM SHOWN INDOOR AND...

  • Page 4: Recovering Refrigerant From Existing System

    3. Replace the stem cap and tighten as follows: Recovering Refrigerant from Existing With Torque Wrench: Tighten finger tight and then HCFC−22 System tighten per table 1. Remove existing HCFC−22 refrigerant using one of the Without Torque Wrench: Finger tighten and use an following methods: appropriately sized wrench to turn an additional METHOD 1:...

  • Page 5: Removing Existing Outdoor Unit

    NOTES: Compressor has internal vacuum protection that is designed to unload the scrolls (compressor stops Service clearance of 30 in. (762 mm) must be pumping) when the pressure ratio meets a certain maintained on one of the sides adjacent to the control value or when the suction pressure is as high as 20 box.
  • Page 6 BASE INSTALL UNIT LEVEL OR, IF ON A SLOPE, MAINTAIN SLOPE TOLERANCE OF 2 DEGREES (OR 2 INCHES PER 5 FEET [50 MM PER 1.5 M]) AWAY FROM BUILDING STRUCTURE. BUILDING STRUCTURE MOUNTING SLAB GROUND LEVEL LEG DETAIL 2" (50.8MM) SCH 40 FEMALE THREADED ADAPTER Figure 8.

  • Page 7: Removing And Installing Panels

    1. Remove two screws, allowing the panel to swing open IMPORTANT slightly as illustrated in figure 12. Unit Stabilizer Bracket Use (field−provided): CAUTION Always use stabilizers when unit is raised above the factory height. (Elevated units could become To prevent personal injury, or damage to panels, unstable in gusty wind conditions).

  • Page 8: New Or Replacement Line Set

    2. With a continuous motion slightly rotate and guide the MATCHING WITH NEW OR EXISTING INDOOR COIL lip of top tab inward as illustrated in figure 12, details AND LINE SET A and C, then upward into the top slot of the hinge The RFC1−metering line consisted of a small bore copper corner post.

  • Page 9: Brazing Connections

    TO HANG LINE SET FROM JOIST OR WIRE TIE RAFTER, USE EITHER METAL STRAPPING AUTOMOTIVE (AROUND MATERIAL OR ANCHORED HEAVY NYLON MUFFLER-TYPE HANGER SUCTION LINE ANCHORED HEAVY NYLON WIRE TIES. ONLY) WIRE TIE OR AUTOMOTIVE MUFFLER-TYPE HANGER 8 FEET STRAPPING MATERIAL (AROUND SUCTION LINE ONLY) FLOOR JOIST OR...

  • Page 10: Removing Indoor Unit Metering Device

    IMPORTANT WARNING When using a high pressure gas such Repeat procedure starting at paragraph 4 for brazing the as dry nitrogen to pressurize a suction line to service port valve. refrigeration conditioning 7. After all connections have been brazed, disconnect system, use a regulator that can manifold gauge set the from service ports and remove control the pressure down to 1 or 2...

  • Page 11: Flushing The System

    4. Remove and discard fixed orifice, valve stem IMPORTANT assembly if present and Teflon ring as illustrated in figure 19. If this unit is being matched with an approved line 5. Use a field−provided fitting to temporary reconnect the set or indoor unit coil which was previously liquid line to the indoor unit’s liquid line orifice housing.

  • Page 12: Installing New Indoor Unit Metering Device

    REQUIRED EQUIPMENT Equipment required to flush the existing line set and indoor unit coil: Two clean HCFC−22 recovery bottles, TXV (1) Oilless recovery machine with pump-down feature, HEX HEAD BOLTS AND NUTS (2) Two gauge sets (one for HCFC−22; one for TEFLON HFC−410A).

  • Page 13: Testing For Leaks

    3. Attach the stubbed end of the TXV to the liquid line 8. Connect the equalizer line from the TXV to the orifice housing. Finger tighten and use an appropriately equalizer suction port on the suction line. Finger sized wrench to turn an additional 1/2 turn clockwise tighten the flare nut plus 1/8 turn (7 ft−lbs) as illustrated as illustrated in figure 22, or 20 ft−lb.

  • Page 14: Evacuating The System

    5. Adjust dry nitrogen pressure to 150 psig (1034 kPa). NOTE − During the early stages of evacuation, it is Open the valve on the high side of the manifold gauge desirable to close the manifold gauge valve at least once to set in order to pressurize the line set and the indoor unit.

  • Page 15: Electrical Connections

    Figure 1. Typical Wiring Diagram 5. Monitor the system to determine the amount of In the U.S.A., wiring must conform with current local codes moisture remaining in the oil. It may be necessary to and the current National Electric Code (NEC). In Canada, replace the filter drier several times to achieve the wiring must conform with current local codes and the current required dryness level.

  • Page 16: Start−Up, Testing And Charging Procedures

    WIRING CONNECTIONS Table 1. Wire Run Lengths 1. Install line voltage power supply to unit from a properly Wire run length AWG # Insulation type sized disconnect switch. Any excess high voltage field less than 100’ (30m) color−coded, temperature wiring should be trimmed or secured away from the º...
  • Page 17 OUTDOOR UNIT (Uncased Coil Shown) OUTDOOR COIL HIGH PRESSURE PRESSURE LIQUID LINE SUCTION LINE GAUGE MANIFOLD SERVICE VALVE SERVICE VALVE FILTER DRIER HFC−410A COMPRESSOR DRUM Figure 27. Typical Manifold Gauge Connection Setup Delta−T 1. Determine the desired DT Measure entering air temperature Temp.
  • Page 18 1. Check Liquid and suction line pressures START: Measure outdoor ambient temperature 64ºF and 2. Compare unit pressures with Table 2, Normal Operating Pressures. BELOW 3. Conduct leak check; evacuate USE EITHER APPROACH previously outlined. ABOVE or OR SUBCOOLING 4. Weigh in the unit nameplate charge plus BELOW 65ºF any charge required for line set differences...
  • Page 19 1. Confirm proper airflow across coil using figure 65ºF START: Measure outdoor ambient temperature 2. Compare unit pressures with Table 2, Normal Operating Pressures − Second Stage (High ABOVE Capacity). USE WEIGH-IN METHOD DO NOT CHARGE UNIT 3. Set thermostat to call for heat (must have a ABOVE or Weigh-in or remove refrigerant (Results of charging at low...

  • Page 20: System Operation

    Table 3. HFC−410A Temperature (°F) − Pressure (Psig) °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig 100.8 137.1 178.5 231.6 290.8 365.0 545.6 445.9 102.9 139.6 181.6 235.3 295.1 370.0 451.8 552.3 105.0 142.2 184.3...

  • Page 21: Homeowner Information

    NOTE - If insufficient heating or cooling occurs, the unit 4. Turn toggle switch OFF and install switch in series with Y2 wire from room thermostat. should be gauged and refrigerant charge should be checked. 5. Cycle main power ON. INDOOR COIL 6.
  • Page 22 the drain line and how to check for obstructions. This In AUTO or INT (intermittent) mode, the blower operates would also apply to an auxiliary drain, if installed. only when the thermostat calls for heating or cooling. This mode is generally preferred when humidity control is a priority.

  • Page 23: Checklists

    Checklists Two−Stage Modulation Compressors Field Operational Checklist Expected results during Y2 Unit Readings Y1 − First-Stage Y2 − Second-Stage demand (Toggle switch On) COMPRESSOR Voltage Same Amperage Higher OUTDOOR UNIT FAN MO- Amperage Same or Higher TEMPERATURE Ambient Same Outdoor Coil Discharge Air Higher Compressor Discharge Line Higher...

This manual is also suitable for:

Elite xc16-024Elite xc16-036Elite xc16-048Elite xc16-060

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