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©2024 Lennox Industries Inc.
Dallas, Texas, USA
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, or service agency.
WARNING
To prevent serious injury or death:
1. Lock-out/tag-out before performing maintenance.
2. If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove fan
belt where applicable, and ensure all controllers
and thermostats are set to the "OFF" position before
performing maintenance.
3. Always keep hands, hair, clothing, jewelry, tools, etc.
away from moving parts.
IMPORTANT: Special procedures are required for clean-
ing the all-aluminum coil in this unit. See page 21 in this
instruction for information.
STEP 1 – SETTING THE UNIT – Clearances
See
NOTES
NOTICE: Specific applications may require adjustment of the listed installation clearances to provide protection for
the unit from physical damage or to avoid conditions which limit operating efficiency. (Example: Clearances may
have to be increased to prevent snow or ice from falling on the top of the unit. Additional clearances may also be
required to prevent air recirculation when the unit is installed under a deck or in another tight space.)
See NOTES
NOTES:
See
NOTES
Control
See NOTES
Box
Page 1
INSTALLATION
INSTRUCTIONS
Elite
Series EL16KC1 Units
®
AIR CONDITIONER
508604-01
7/2024
General
This EL16KC1 outdoor air conditioner with all-aluminum
coil is designed for use with R-454B refrigerant only. This
unit must be installed with an approved indoor air handler
or coil. For AHRI Certified system match-ups and expand-
ed ratings, visit www.LennoxPros.com. These instructions
are intended as a general guide and do not supersede
local codes in any way. Consult authorities having jurisdic-
tion before installation.
Charging information is given on the charging
procedure sticker on the unit access panel. For
more in-depth information, consult the Installation
and Service Procedures manual, available on
LennoxPros.com or through the Technical Support
department at 800-453-6669.
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
NOTE – This unit EL16KC1 is a PARTIAL UNIT AIR CON-
DITIONER, complying with PARTIAL UNIT requirements
of this Standard, and must only be connected to other
units that have been confirmed as complying to corre-
sponding PARTIAL UNIT requirements of this Standard,
UL 60335-2-40/CSA C22.2 No. 60335-2-40, or UL 1995/
CSA C22.2 No 236.
Service clearance of 30 in. must be maintained on one of the sides
adjacent to the control box.
Clearance to one of the other three sides must be 36 in.
Clearance to one of the remaining two sides may be 12 in. and the
final side may be 6 in.
A clearance of 24 in. must be maintained between two units.
48 in. clearance required on top of unit.
NOTICE!
CAUTION
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Table of Contents
Related Manuals for Lennox Elite EL16KC1 Series
Summary of Contents for Lennox Elite EL16KC1 Series
- Page 1 INSTALLATION INSTRUCTIONS ©2024 Lennox Industries Inc. Dallas, Texas, USA Elite Series EL16KC1 Units ® AIR CONDITIONER 508604-01 7/2024 General This EL16KC1 outdoor air conditioner with all-aluminum coil is designed for use with R-454B refrigerant only. This unit must be installed with an approved indoor air handler or coil.
- Page 2 WARNING CAUTION • The appliance shall be stored in a room without con- Under no circumstances shall potential sources of tinuously operating ignition sources (for example: ignition be used in the searching for or detection of open flames, an operating gas appliance, or an oper- refrigerant leaks.
-
Page 3: Refrigerating System
IMPORTANT IMPORTANT When breaking into the refrigerant circuit to make When removing refrigerant from a system, either for repairs – or for any other purpose – conventional servicing or decommissioning, it is recommended good procedures shall be used. However, for flammable practice that all refrigerants are removed safely. - Page 4 NOTE – R-454b is a A2L refrigerant. The system installation must meet the following parameters based upon total refrigerant charge (line set included). TAmin (Total minimum conditioned area)is the minimum allowable conditioned area based upon the total system charge at sea level. Values must be multiplied by altitude adjustment factor at installed altitude. Qmin table refers to minimum airflow requirements during refrigerant leak mitigation by the refrigerant detection system, based upon total system charge.
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Page 5: Side View
Unit Dimensions LIQUID LINE CONNECTION ELECTRICAL INLETS SUCTION LINE CONNECTION 4-3/4” 4-1/2” (121) (108) TOP VIEW SIDE VIEW EL16KC1 Dimensions – in. (mm) Model EL16KC1-018-230A 31 (787) 30.5 (775) 35 (889) 13.88 (352) 7.75 (197) 3.25 (83) 27.13 (689) 3.63 (92) 4.5 (114) 20.63 (524) EL16KC1-024-230A... - Page 6 STEP 1 – SETTING THE UNIT PLACEMENT (Continued) – Unit Placement Install unit away from windows. NOTICE! Roof Damage! This system contains both refrigerant and oil. Some rubber roofing material may absorb oil, causing the rubber to degrade. Failure to follow this notice could result in damage to roof surface.
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Page 7: Step 2 - Refrigerant Piping
Take care to empty all existing traps. Polyolester (POE) TION - DO NOT attempt to flush and re-use existing line oils are used in Lennox units charged with R-454B sets or indoor coil when the system contains contaminants refrigerant. Residual mineral oil can act as an insulator, (i.e., compressor burn out). - Page 8 Connect the refrigerant sensor to the second sensor in- WARNING put on the RDS Control. Refer to the instructions provided with the sensor or the RDS controller to enable the second Polyolester (POE) oils used with R-454B refrigerant sensor. absorb moisture very quickly. It is very important that the WARNING refrigerant system be kept closed as much as possible.
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Page 9: Installation
LINE SET IMPORTANT — Refrigerant lines must not contact structure. INSTALLATION REFRIGERANT LINE SET — INSTALLING Line Set Isolation - The following illustrations are VERTICAL RUNS (NEW CONSTRUCTION SHOWN) examples of proper refrigerant line set isolation: NOTE - Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the REFRIGERANT LINE SET —... -
Page 10: Flushing Procedure
STEP 2 – REFRIGERANT PIPING – (Continued) STUB END TWO-PIECE PATCH PLATE LIQUID LINE CHECK (UNCASED COIL ONLY) ORIFICE EXPANSION HOUSING VALVE DISTRIBUTOR TUBES ® TEFLON RING ® TEFLON TYPICAL EXISTING EXPANSION VALVE REMOVAL SENSING RING PROCEDURE (UNCASED COIL SHOWN) LINE DISTRIBUTOR EQUALIZER... -
Page 11: Cap And Core Removal
STEP 2 – REFRIGERANT PIPING – Brazing Procedures CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from and debur the ends. The pipe must remain round. Do not crimp end both the vapor and liquid line service of the line. -
Page 12: Braze Line Set
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 vapor valve stem port. - Page 13 STEP 2 – REFRIGERANT PIPING – Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include an expansion valve metering device (purchased separately) at the indoor coil. See the EL16KC1 Product Specifications bulletin (EHB) for approved expansion valve kit match-ups and application information.
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Page 14: Step 3 - Leak Test And Evacuation
STEP 3 – LEAK TEST AND EVACUATION LEAK TEST HIGH MANIFOLD GAUGE SET OUTDOOR UNIT TO VAPOR SERVICE VALVE NOTE - Position canister to deliver liquid refrigerant. NITROGEN R-454B CONNECT GAUGE SET A - Connect the high pressure hose of an R-454B manifold gauge set to the vapor valve service port. NOTE - Normally, the high pressure hose is connected to the liquid line port. -
Page 15: Evacuate The System
EVACUATION HIGH CONNECT GAUGE SET NOTE - Remove cores from service valves (if not already done). A - Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve B - Connect high side of manifold gauge set to OUTDOOR MANIFOLD liquid line service valve... -
Page 16: Electrostatic Discharge
Electrostatic discharge can affect electronic components. Take care REFRIGERANT DETECTION SYSTEM during unit installation and service to Unit must be installed with Lennox Approved Refrigerant protect the unit’s electronic controls. detection system (RDS) and sensor. ELECTROSTATIC Precautions will help to avoid control... - Page 17 STEP 4 – ELECTRICAL – (Continued) – High Voltage and Field Control Wiring Unit Low Voltage Wiring HIGH VOLTAGE FIELD WIRING 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.
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Page 18: Step 5 - Unit Start-Up
STEP 5 – UNIT START-UP TABLE 2 TORQUE REQUIREMENTS IMPORTANT Parts Recommended Torque Service valve cap 8 ft.-lb. 11 NM If unit is equipped with a crankcase heater, it should be energized 24 hours before unit start-up to prevent Sheet-metal screws 16 in.-lb. -
Page 19: Operating Angle-Type Service Valve
Charging OPERATING ANGLE-TYPE SERVICE VALVE 1 - Remove stem cap with an appropriately sized wrench. Verify the unit is electrically grounded before charging the system. Extreme care shall be taken not to overfill the re- 2 - Use a service wrench with a hex-head extension (3/16" for liquid line valve sizes and 5/16"... - Page 20 Leak Detected mode upon test completion. filter, if necessary. Heating Demand • Have your Lennox dealer show you where your indoor 1 - Prompt a heating demand at the thermostat. unit filter is located. It will be either at the indoor unit...
- Page 21 2 - Check the cleanliness of outdoor fan and blade any time the unit is in operation. If you are unsure about condition (cracks) and clean or replace them, if the filter required for your system, call your Lennox dealer necessary. for assistance.
- Page 22 General System Test with System Operating • recovery equipment and cylinders conform to the ap- propriate standards. 1 - Your technician should perform a general system test. He will turn on the air conditioner to check d) Pump down refrigerant system, if possible. operating functions such as the startup and shutoff e) If a vacuum is not possible, make a manifold so that operation.
- Page 23 R‐454B Refrigerant Pressure‐Temperature Chart Saturated Saturated Saturated Saturated Saturated Saturated Saturated Saturated Pressure Pressure Pressure Pressure Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor (psig) (psig) (psig) (psig) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F) ‐58.9 ‐57.1 58.9 61.3 93.0 95.4 113.4 115.6 ‐19.2 ‐17.2...
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Page 24: Start Up Checks
EL16KC1 Start-Up and Performance Checklist Customer Address Indoor Unit Model Serial Outdoor Unit Model Serial Notes: START UP CHECKS Refrigerant Type: Rated Load Amps: Actual Amps Rated Volts Actual Volts Condenser Fan Full Load Amps Actual Amps: COOLING MODE Suction Pressure: Liquid Pressure: Supply Air Temperature: Ambient Temperature: Return Air: Temperature:...
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