Table of Contents
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Service Literature
EL16XC1 (HFC-410A) SERIES UNITS WITH ALL-ALUMINUM COIL
This literature is intended as a general guide and does not
supersede local codes in any way. Consult authorities who
have jurisdiction before installation.
WARNING
Improper installation, adjustment, alteration, 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.
IMPORTANT
This unit must be matched with an indoor coil as speci
fied in Lennox EL16XC1 Engineering Handbook. Coils
previously charged with HCFC-22 must be flushed.
WARNING
Electric Shock Hazard. Can cause injury
or death. Unit must be grounded in
accordance with national and local
codes.
Line
voltage
components when unit is not in
operation on units with single-pole
contactors.
electric power supplies before opening
access panel. Unit may have multiple
power supplies.
INSTALLATION AND SERVICE PROCEDURE
is
present
at
all
Disconnect
all
remote
Corp. 1503-L7
August 29, 2016
Model Number Identification
Typical Serial Number Identification
Specifications
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Unit Parts Arrangement
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Unit Electrical Diagram and Sequence
of Operations
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The EL16XC1 air conditioners, which will also be referred
to in this instruction as the outdoor unit, use HFC-410A
refrigerant. This outdoor unit must be installed with a
matching indoor unit and line set as outlined in the Lennox
EL16XC1 Engineering Handbook.
This outdoor unit is designed for use in systems that use
one of the following refrigerant metering devices:
S
Expansion valve (TXV)
IMPORTANT : Special procedures are required for
cleaning the aluminum coil in this unit. See page 23 in this
manual for information.
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EL16XC1
TABLE OF CONTENTS
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Table of Contents
Related Manuals for Lennox EL16XC1 Series
Summary of Contents for Lennox EL16XC1 Series
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Page 1: Table Of Contents
HFC-410A refrigerant. This outdoor unit must be installed with a Electric Shock Hazard. Can cause injury matching indoor unit and line set as outlined in the Lennox or death. Unit must be grounded in EL16XC1 Engineering Handbook. - Page 2 Model Number Identification − − Product Tier ® EL = Elite Series Nominal SEER Minor Revision Number Refrigerant Ratings Revision Level X = R-410A Voltage Unit Type 230 = 208/230V-1phase-60hz C = Air Conditioner Nominal Cooling Capacity - Tons Cooling Stages 018 = 1.5 1 = Single Stage Compressor 024 = 2...
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Page 3: Electrical Data
17.9 112.0 EL16XC1-047 21.9 16.1 105.5 EL16XC1-048 24.2 18.0 117.0 EL16XC1-060 29.6 22.2 127.9 HACR type circuit breaker or fuse. Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Page 3 EL16XC1 SERIES... -
Page 4: Unit Dimensions
Unit Dimensions - Inches (mm) LIQUID LINE CONNECTION ELECTRICAL INLETS SUCTION LINE CONNECTION 4.75” 4.25” (121MM) (108MM) TOP VIEW SIDE VIEW UNIT SUPPORT UNIT SUPPORT FEET FEET 9.25” 8.50” (216MM) (241MM) 8.75” 8.25” (222MM) (210MM) 5.50” 13.50” (140MM) (343MM) EL16XC1-024 TO -060 BASE SECTION EL16XC1-018 BASE SECTION (Medium and Large Base) (Small Base) - Page 5 SERVICE VALVE SERVICE VALVE FIELD CONNECTION FIELD CONNECTION FIELD CONNECTION FIELD CONNECTION FOR LIQUID LINE FOR SUCTION LINE FOR SUCTION LINE FOR LIQUID LINE TYPICAL PLUMBING TYPICAL PLUMBING (COPELAND COMPRESSOR) (LG COMPRESSOR) Figure 1. Typical Parts Arrangements Page 5 EL16XC1 SERIES...
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Page 6: Operating Gauge Set And Service Valves
Each valve is equipped with a service port which has a recess. factory-installed valve stem. Figure 2 provides information See the Lennox Service and Application Notes #C-08-1 on how to access and operating both angle and ball service for further details and information. - Page 7 1/12 turn TO OUTDOOR clockwise. UNIT NOTE — A label with specific torque requirements may be affixed to the stem cap. If the label is present, use the specified torque. Figure 2. Angle and Ball Service Valves Page 7 EL16XC1 SERIES...
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Page 8: Outdoor Unit Placement
Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í Í NOTES: See NOTES Í Í Í Í Í Í Í Í Í Í Í Í Í Service clearance of 30 in. - Page 9 (51mm) from each corner. IMPORTANT — To help stabilize an outdoor unit, some installations may require strapping the unit to the pad using brackets and anchors commonly available in the marketplace. Figure 4. Placement, Slab Mounting and Stabilizing Unit Page 9 EL16XC1 SERIES...
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Page 10: Removing And Installing Panels
STABILIZING UNIT ON UNEVEN SURFACES NOTICE IMPORTANT Roof Damage! Unit Stabilizer Bracket Use (field-provided): This system contains both refrigerant and oil. Some Always use stabilizers when unit is raised above the rubber roofing material may absorb oil and cause the factory height. -
Page 11: New Or Replacement Line Set
IMPORTANT Liquid lines that meter the refrigerant, such as RFC1 liquid Lennox highly recommends changing line set when lines, must not be used in this application. Existing line set converting the existing system from HCFC-22 to of proper size as listed in table 2 may be reused. - Page 12 NOTE — Some applications may require a field provided 7/8” to 1-1/8” adapter NOTE — When installing refrigerant lines longer than 50 feet, see the Lennox Refrigerant Piping Design and Fabrication Guidelines, CORP. 9351-L9, or contact Lennox Technical Support Product Applications for assistance.
- Page 13 INTERVALS THEN STRAP THE LIQUID NOTE — Similar installation practices should be used if line set is LINE TO THE VAPOR LINE. to be installed on exterior of outside wall. FLOOR JOIST OR ROOF RAFTER Figure 6. Line Set Installation Page 13 EL16XC1 SERIES...
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Page 14: Brazing Connections
Brazing Connections IMPORTANT Use the procedures outlined in figures 7 and 8 for brazing Connect gauge set low pressure side to vapor line line set connections to service valves. service valve and repeat procedure starting at paragraph 4 for brazing the liquid line to service port WARNING valve. - Page 15 OPEN TO ALLOW EXIT POINT FOR NITROGEN VAPOR LINE SERVICE VALVE VAPOR LINE OUTDOOR INDOOR UNIT UNIT NITROGEN LIQUID LINE SERVICE WHEN BRAZING LINE SET TO LIQUID LINE VALVE SERVICE VALVES, POINT FLAME AWAY FROM SERVICE VALVE. Figure 7. Brazing Procedures Page 15 EL16XC1 SERIES...
- Page 16 WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water saturated cloths around service valve bodies and copper tube stubs. Use additional water saturated cloths underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the suction / vapor valve stem port.
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Page 17: Flushing Line Set And Indoor Coil
*IMPORTANT - Clean refrigerant is any refrigerant in a system that has not had compressor burn out. If the system has experienced burn out, it is recommended that the existing line set and indoor coil be replaced. Figure 9. Installing Indoor Expansion Valve Page 17 EL16XC1 SERIES... -
Page 18: Installing Indoor Metering Device
Installing Indoor Metering Device This outdoor unit is designed for use in systems that use See the Lennox EL16XC1 Engineering Handbook for either fixed orifice or expansion valve metering devices at approved expansion valve kit match-ups. The the indoor coil. -
Page 19: Leak Test Line Set And Indoor Coil
Take care to empty all existing traps. Polyol ester (POE) oils are used in Lennox units charged with HFC-410A WARNING refrigerant. Residual mineral oil can act as an insulator, preventing proper heat transfer. It can also Refrigerant can be harmful if it is inhaled. -
Page 20: Evacuating Line Set And Indoor Coil
Evacuating Line Set and Indoor Coil CONNECT GAUGE SET HIGH NOTE — Remove cores from service valves (if not already done). Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve Connect high side of manifold gauge OUTDOOR set to liquid line service valve MANIFOLD... -
Page 21: Electrical
Line voltage is present at all components 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 multiple power supplies. Page 21 EL16XC1 SERIES... - Page 22 HIGH VOLTAGE FIELD WIRING UNIT LOW VOLTAGE CONNECTIONS FACTORY WIRING LOW VOLTAGE (24V) FIELD WIRING WIRE RUN LENGTH AWG# INSULATION TYPE WIRE NUTS LESS THAN 100' (30 METERS) TEMPERATURE RATING MORE THAN 100' (30 METERS) 35ºC MINIMUM. ARun 24VAC control wires through cutout with grommet. BRun 24VAC control wires through wire tie.
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Page 23: System Operation
(less than 50psi). If the coil can prevents liquid from accumulating in the compressor. HR1 not be cleaned using water alone, Lennox recom is controlled by a single pole, single throw thermostat mends use of a coil cleaner with a pH in the range of switch (S40) located on the liquid line. -
Page 24: Start-Up And Performance Checklist
Start-Up and Performance Checklist Job Name Job no. Date Job Location City State Installer City State Unit Model No. Serial No. Service Technician Nameplate Voltage Rated Load Ampacity Compressor Outdoor Fan Maximum Fuse or Circuit Breaker Electrical Connections Tight? - Indoor Filter clean? - Supply Voltage (Unit Off) Indoor Blower RPM... - Page 25 Typical Field Wiring Page 25 EL16XC1 SERIES...
- Page 26 Typical Factory Wiring Page 26...
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Page 27: Servicing Units Void Of Charge
BConnect the manifold gauge set's low pressure side to the suction line service port. CConnect the manifold gauge set's high pressure side to the liquid line service port. DPosition temperature sensor on liquid line near liquid line service port. Figure 14. Gauge Set Setup and Connections Page 27 EL16XC1 SERIES... - Page 28 ADDING OR REMOVING REFRIGERANT This system uses HFC-410A refrigerant which operates at much higher pressures than HCFC-22. The pre-installed liquid line filter drier is approved for use with HFC-410A only. Do not replace it with components designed for use with HCFC-22. This unit is NOT approved for use with coils which use capillary tubes or fixed orifices as a refrigerant metering device.
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Page 29: S Fixed Orifice
20 psig. NOTE — The above nameplate is for illustration purposes only. Go to actual nameplate on outdoor unit for charge information. Figure 17. Using HFC-410A Weigh In Method Page 29 EL16XC1 SERIES... - Page 30 1. Connect gauge set as illustrated in figure 14. 65ºF START: Measure outdoor ambient temperature 2. Confirm proper airflow across coil using figure 15. 3. Compare unit pressures with charging sticker, Normal ABOVE Operating Pressures. USE WEIGH‐IN METHOD DO NOT CHARGE UNIT 4.
- Page 31 125.0 166.7 214.0 274.1 340.5 423.2 512.9 622.7 127.3 169.6 217.4 278.2 345.3 428.8 519.3 630.1 129.7 172.6 220.9 282.3 350.1 434.5 525.8 637.5 132.2 175.4 224.4 286.5 355.0 440.2 532.4 645.0 134.6 228.0 360.0 539.0 Page 31 EL16XC1 SERIES...