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Lennox AIRCOOLAIR KNCK 24E Installation, Operation & Maintenance Manual

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INSTALLATION
OPERATION &
MAINTENANCE MANUAL
AIRCOOLAIR
KNCK / KNHK
English/03-2005

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  Summary of Contents for Lennox AIRCOOLAIR KNCK 24E

  • Page 1 INSTALLATION OPERATION & MAINTENANCE MANUAL AIRCOOLAIR KNCK / KNHK English/03-2005...
  • Page 3: Electrical Connections

    DANGER AND WARNING SIGNS ELECTRICAL CONNECTIONS Standard Guidelines to Lennox equipment...
  • Page 4: Data Input

    CHECKS: DATA INPUT: ºC ºC ºC ºC ºC ºC ºC ºC circuit 1 circuit 1 circuit 2 circuit 2 circuit 1 circuit 1 circuit 2 circuit 2 ELECTRIC POWER CONSUMPTION (Amps)
  • Page 5 COMPRESSOR NET WEIGHT AIR FLOW REFRIGERANT CHARGE 64D/D2 76D/D2 86D/D2 48D/D2 COMPRESSOR NET WEIGHT AIR FLOW REFRIGERANT CHARGE refrigerant R-407C...
  • Page 6 R-407C KNCK 24E KNCK 32E KNCK 38E KNCK 43E KNCK-KNHK KNCK-KNHK KNCK-KNHK KNCK-KNHK KNHK 24E KNHK 32E KNHK 38E KNHK 43E 48D/48D2 64D/64D2 76D/76D2 86D/86D2 V/f (50 Hz) SOUND PRESSURE / SOUND POWER LEVELS FOR OUTDOOR UNIT Sound Sound Spectrum per octave band (dBA) KNCK/ Power pressure at 10m...
  • Page 7: Cooling Mode

    (To install with LECK - LEHK units) OPERATING LIMITS FOR (COOLING ONLY) UNITS OPERATING LIMITS FOR (HEATING PUMP) UNITS TABLE 1 - MAXIMUM OUTDOOR OPERATING TEMPERATURES (ºC) ON COOLING CYCLE WORKING AT MAXIMUM INDOOR TEMPERATURES (32ºC DB / 23ºC WB) 48D/D2 64D/D2 76D/D2 86D/D2 TABLE 2 - MAXIMUM OUTDOOR OPERATING TEMPERATURES (ºC) ON HEATING CYCLE WORKING AT MAXIMUM INDOOR TEMPERATURES (27ºC DB)
  • Page 8 MODELS KNCK/KNHK 24E MODELS KNCK/KNHK 32E-38E-43E MODELS KNCK/KNHK 48D-64D-76D-86D 48D2-64D2-76D2-86D2...
  • Page 9 MAIN SWITCH PHASE SEQUENCER ON/OFF CONDENSATION PRESSURE CONTROL PROPORTIONAL CONDENSING PRESSURE CONTROL COMPRESSOR STARTING CURRENT CONSTRAINED (“SOFT STARTER”) 400V-III 24E-32E-38E-43E 48D/D2-64D/D2-76D/D2-86D/D2 HOT GAS BYPASS VALVE REMOTE AMBIENT SENSOR AND REMOTE DUCT SENSOR...
  • Page 10 CONTROL USING A PROGRAMMABLE CONTROLLER CONDENSER COIL GUARD PRECOATED COIL RUBBER DAMPERS COMPRESSOR ACOUSTIC JACKET KIT LOW NOISE R-407C REFRIGERANT FACTORY PRECHARGED SERVICE VALVES...
  • Page 11 All INSTALLATION, SERVICE and MAINTENANCE operations must be carried out by QUALIFIED PERSONNEL. When positioning the unit, be sure that the Rating Plate will always be visible since this data will be necessary to assure proper maintenance. How to hoist the unit separators separators...
  • Page 12: Mounting Plates

    MOUNTING PLATES...
  • Page 13 Standard units are supplied with Nitrogen gas, which must be removed before any operation on the unit. As an option, the unit can be supplied with service valves on gas and liquid lines, with Nitrogen charge (N ) or with refrigerant (R-407C). FOR STANDARD UNITS AND UNITS SUPPLIED WITH SERVICE VALVES PROCEED AS FOLLOW: During installation operations, keep gas and liquid pipes covered, in order to prevent humidity and dirt, get into them.
  • Page 14 FOR UNITS SUPPLIED WITH SERVICE VALVES AND KIT REFRIGERANT FACTORY PRECHARGED, PROCEED AS FOLLOW:...
  • Page 15: Refrigerant Lines

    A,B,C : Unit positions Make special attention to line length longer than 10m, and avoid collapse on pipe lines installation. TABLE 1: REFRIGERANT LINES SELECTION UNIT - MODEL REFRIGERANT LINES 48D2 64D2 76D2 86D2...
  • Page 16 PRECAUTIONS TO BE TAKEN IN THE USE OF R-407C Refrigerant: R-407C Refrigerant is used in the unit; therefore, the following precautions characteristic of this gas should be taken: - The Vacuum Pump must have a Check Valve or Solenoid Valve. - Pressure Gauges and Hoses for the exclusive use with R-407C Refrigerant should be used.
  • Page 17 Indoor and outdoor units are factory pre-charged with Nitrogen (N The installer should remove this gas and charge the units with the refrigerant R-407C shown on the following tables and also the charge per meter line on TABLE 2. TABLE 3.1.: CHARGE OF REFRIGERANT FOR OUTDOOR UNIT + INDOOR UNIT LECK / LEHK Charge of refrigerant (gr) R-407C for 0 meters of line KNCK + LECK Charge of refrigerant (gr) R-407C for 0 meters of line KNHK + LEHK TABLE 3.2.: CHARGE OF REFRIGERANT FOR MULTI-SPLIT SYSTEM...
  • Page 18 - BEFORE MAKING ANY ELECTRICAL CONNECTIONS, BE SURE THAT ALL CIRCUIT BREAKERS ARE OPEN. - IN ORDER TO CARRY OUT THE ELECTRICAL CONNECTIONS, FOLLOW THE ELECTRICAL DIAGRAM SUPPLIED WITH THE UNIT. FOR UNIT MODELS: 24E-32E-38E-43E 48D-64D-76D-86D Nr OF CABLES X SECTION (mm ) POWER SUPPLY 230V THREE-PHASE UNITS...
  • Page 19 MULTI-SPLIT UNIT - BEFORE MAKING ANY ELECTRICAL CONNECTIONS, BE SURE THAT ALL CIRCUIT BREAKERS ARE OPEN. - IN ORDER TO CARRY OUT THE ELECTRICAL CONNECTIONS, FOLLOW THE ELECTRICAL DIAGRAM SUPPLIED WITH THE UNIT. FOR UNIT MODELS: 48D2-64D2-76D2-86D2 Nr OF CABLES X SECTION (mm ) POWER SUPPLY 230V THREE-PHASE UNITS...
  • Page 20 CONTROL PANEL ELECTRICAL CONNECTION DIGITAL THERMOSTAT, FOR STANDARD UNIT VERSION IMPORTANT THE SHIELDED CONNECTION CABLE BETWEEN THE CONTROL PANEL AND THE UNIT MUST BE SEPARATE FROM ANY OTHER TYPE OF ELECTRICAL WIRING. CONNECT IT TO THE ELECTRIC BOX LOCATED IN THE OUTDOOR UNIT. Since this type of control panel is factory-configured for each application, an identification code located on the control plate of the terminal itself has been given to each panel.
  • Page 21 ELECTRICAL CONNECTION " REMOTE SIGNALS"...
  • Page 22 ELECTRICAL CONNECTION " REMOTE SIGNALS" MULTI-SPLIT SYSTEMS...
  • Page 23 with your hand 48D-64D-76D-86D...
  • Page 24 REMEMBER THAT THE COMPRESSOR IS A SCROLL TYPE COMPRESSOR: Scroll type compressors only compress in one direction of the rotation. Single phase models are always started up in the proper direction; however, the three phase models, turn in either direction depending on the order of the power supply phases.
  • Page 25: Cooling Circuit

    PREVENTIVE MAINTENANCE PREVENTS COSTLY REPAIRS. BECAUSE OF THIS PERIODIC INSPECTIONS ARE REQUIRED: GENERAL STATE OF THE CASING: ELECTRICAL CONNECTIONS: COOLING CIRCUIT: COMPRESSOR: FANS: CONTROL:...
  • Page 26 IMPORTANT MAKE SURE THAT THE UNIT IS COMPLETELY DISCONNECTED FROM THE POWER SUPPLY WHEN CARRYING OUT ANY TYPE OF WORK ON THE MACHINE DO NOT USE THE COMPRESSOR AS A VACUUM PUMP. check that there are no leaks. PRECAUTIONS TO BE TAKEN IN THE USE OF R-407C Refrigerant: R-407C Refrigerant is used in the unit;...
  • Page 27 FAILURE POSSIBLE CAUSES POSSIBLE SOLUTIONS...
  • Page 28 LENNOX DISTRIBUTION www.lennoxdistribution.com Due to Lennox's ongoing commitment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability. COD: MIL76E-0103 03-2005 Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury.