Lennox EMEA NEOSYS Installation, Operating And Maintenance
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Lennox EMEA NEOSYS Installation, Operating And Maintenance

Air cooled chillers (neosys) water cooled chillers (hydrolean&mwc) 20- 1000kw
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INSTALLATION, OPERATING AND
MAINTENANCE
AIR COOLED CHILLERS (NEOSYS)
WATER COOLED CHILLERS (HYDROLEAN & MWC)
NEOSYS - HYDROLEAN - MWC
20 - 1000 kW
CHILLER-IOM-2004-E

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Summary of Contents for Lennox EMEA NEOSYS

  • Page 1 INSTALLATION, OPERATING AND MAINTENANCE AIR COOLED CHILLERS (NEOSYS) WATER COOLED CHILLERS (HYDROLEAN & MWC) NEOSYS - HYDROLEAN - MWC 20 - 1000 kW CHILLER-IOM-2004-E...
  • Page 3 OPERATION MAINTENANCE MANUAL Ref : CHILLER-IOM-2004-E The present manual applies to the following chiller versions: NEOSYS range: NAC-NAH HYDROLEAN range: SWC-SWH-SWR MWC range: MWC-MRC INSPECTIONS AND REQUALIFICATION ACCORDING PRESSURE EQUIPMENT DIRECTIVE MUST FOLLOW THE LOCAL REGULATIONS WHERE THE UNIT IS INSTALLED.

  • Page 4: Table Of Contents

    PRELIMINARY CHECKS ............................... 26 LIMITS ................................... 26 REFRIGERATION CIRCUIT CHECKS AND RECOMMENDATIONS ..................26 HYDRAULIC SYSTEM INSTALLATION CHECKS (NEOSYS) ....................26 INSTALLATION OF EXTERNAL HYDRAULIC COMPONENTS (FOR HYDROLEAN AND MWC) ..........26 HYDRAULIC CONNECTIONS AND OPTIONS (FOR HYDROLEAN AND MWC) ..............28 CHECK LIST BEFORE START-UP............................
  • Page 5 INTRODUCTION GENERAL REFRIGERATION CIRCUIT DIAGRAM: NEOSYS COOLING ONLY ..............57 GENERAL REFRIGERATION CIRCUIT DIAGRAM: NEOSYS COOLING ONLY - WITH TOTAL HEAT RECOVERY OPTION ..58 GENERAL REFRIGERATION CIRCUIT DIAGRAM: NEOSYS HEAT PUMP................59 GENERAL REFRIGERATION CIRCUIT DIAGRAM: HYDROLEAN COOLING ONLY .............. 60 GENERAL REFRIGERATION CIRCUIT DIAGRAM: HYDROLEAN HEAT PUMP ..............

  • Page 6: Introduction

    INTRODUCTION INTRODUCTION You must read and be familiar with this operating manual prior to commission the unit. Please closely follow the instructions. We would like to stress the importance of training with respect to the correct handling of the unit. Please consult LENNOX on the options available in this field.

  • Page 7: General Description

    Inspections and requalification according pressure equipment directive must follow the local regulations where the unit is installed. 3. MACHINE DESIGNATION M W C 2 0 0 N A C 2 0 0 D N M 6 M 400V/3/50 NEOSYS HYDROLEAN MEDIUM WATER Revision number COOLED...

  • Page 8: Safety Definition

    Cooling only unit: EU 2016/2281 - 2015/1095 o Heat pump unit: EU 813/2013 – 2016/2281 – 2015/1095 5. SAFETY PRESSURE SWITCH (NEOSYS and MWC ranges) This equipment is protected with safety pressure switch calibrated at 42 bar g. Do not overcome this operating pressure IMPORTANT NOTICE All work on the unit must be carried out by a qualified and authorized employee.

  • Page 9: Emc Directive Compliance

    • EN 61000-6-2 : Immunity for industrial environments Neosys units comply with the following most stringent environmental standards if EMC filter class B option or MS machine (without inverter): • EN 61000-6-3: Emissions for residential, commercial and light industrial environments.

  • Page 10: F-Gas Regulation

    F-GAS REGULATION F-GAS REGULATION PLEASE READ THE SAFETY DATA SHEET OF THE REFRIGERANT BEFORE ANY INTERVENTION OR INSTALLATION OF THE MACHINE. Operators of refrigeration equipment’s must comply with the obligations defined in: • Regulation on Fluorinated greenhouse gases (F Gas) •...

  • Page 11: Safety

    SAFETY SAFETY The safety information contained in this manual is provided as a guide for the safe handling of this installation. LENNOX does not vouch for the completeness of this information and can therefore not accept liability for any possible omissions. In the chillers, heat is being transported by a pressurized refrigerant, with changes in pressure and temperature.

  • Page 12: Labels

    SAFETY 1. LABELS The chiller may be marked with the following warning labels to alert to potential hazards (on or near the potentially hazardous part). High temperatures Electrical Voltage Rotating parts Sharp parts Warning Wear of PPE (Personal Don’t walk A2L: slightly flammable protective equipment) Inflammable dusty filters...
  • Page 13 SAFETY All units are compliant with the Pressure Equipment Directive (PED). Warning: 1. Attention: The high-pressure safety switches are essential elements which guarantee the system remains within the admissible operating limits. Before switching on the installation, always ensure all electrical connections are correct on these elements which are used to isolate the electrical power supply to the compressor(s) they protect.

  • Page 14: Installation

    INSTALLATION INSTALLATION 1. TRANSPORT – HANDLING All unloading operations must be carried out with suitable equipment (crane, forklift truck, etc.). Optional removable handling rings are available for certain products. When using a forklift truck, you must respect the positions and the direction of handling indicated on the products. The equipment must be handled with care to avoid damage to the bodywork, pipework, condenser, etc.

  • Page 15: Lifting The Unit

    If the unit is mounted on anti-vibration mountings, these should be fitted to the unit before final positioning. CAUTION: IN CASE OF REINSTALLATION OF THE UNIT, MAKE SURE THAT THE UNIT POWER SUPPLY IS PROPERLY ISOLATED AND LOCKED OUT. NEOSYS HYDROLEAN & MWC CHILLER-IOM-2004-E...

  • Page 16: Lay-Out And Installation Requirements

    3. LAY-OUT AND INSTALLATION REQUIREMENTS The following preparations are important for the installation of the chiller: • Air-cooled chillers with helicoids fans such as NEOSYS are designed for outdoor installation. Please consult LENNOX prior to implementing other types of installation.
  • Page 17 For more details, please consult our Application Guides or the drawings supplied with the unit. For any chiller, a minimum distance of 1 meter is required for the good opening and servicing of the electrical box. In case of a compressor replacement, 1m is also reasonable to remove it. NEOSYS 2 meters 2 meters >...

  • Page 18: Water Connections

    INSTALLATION 4. WATER CONNECTIONS 4.1. Water connections - Evaporator / Condenser / Desuperheater / Total heat recovery Before the system start-up check that the water circuits are connected to the right heat exchangers (e.g. no reversal between evaporator and condenser or between water in and outlets). The water circulating pump will be preferably installed upstream so that the evaporator/ condenser will be subjected to positive pressure.
  • Page 19 INSTALLATION 4.2. Water analysis The water must be analyzed; the water circuit installed must include all items necessary for treatment of the water: filters, additives, intermediate exchangers, bleed valves, vents, isolating valves etc... depending on the results of the water analysis. We do not advise operation of the units with open loops which can cause problems with oxygenation, or operation with untreated ground water.
  • Page 20 INSTALLATION 4.5. - Minimum water capacity The minimum volume of the chilled water circuit must be calculated with the formula here under. If necessary, install a buffer tank. Proper operation of regulating and safety devices can only be ensured if the volume of water is sufficient. The theoretical volume of the water loop for a proper air conditioning operation can be calculated using the formula hereafter: Vt →...
  • Page 21 Example: 20% glycol instead of water -->: water flow x 1,05; Pressure drop x 1,1; Cooling capacity x 0,98 4.6. NEOSYS range with hydraulic module - maximum water content The maximum water content of the installation is determined by the capacity of the expansion vessel.
  • Page 22 INSTALLATION 4.7. Desuperheater option (NEOSYS only) The aim of the desuperheater is to recover high temperature heat from the compressor discharge gases by means of a heat exchanger and without condensing. This point is important because in this case, no refrigerant receiver to compensate the volume difference between the gas and liquid phase is then required.
  • Page 23 INSTALLATION 4.8. Total heat recovery option (NEOSYS only) The aim of the Total Heat Recovery (THR) is to recover temperature heat from the compressor discharge gases by means of a condensing water heat exchanger. In our design, the air condenser and the heat recovery condenser have the same volume and are mounted in parallel.
  • Page 24 For electronic flow switch, the presence of glycol may affect the setting, please check setting while charging the unit with glycol. 4.10.2. PADDLE FLOW SWITCH A paddle flow switch can be ordered for the NEOSYS units as an option. MWC / MRC units are fitted with a paddle flow switch as standard. CHILLER-IOM-2004-E...

  • Page 25: Electrical Connections

    INSTALLATION 5. ELECTRICAL CONNECTIONS First of all, make sure that power supplies from the building to the place where the unit is installed are properly established and that wire gauges are in keeping with the start up and running currents. Check tightness of all electrical connections. You MUST make absolutely certain that the power supplies applied to the power and control circuits are those for which the electrical panel was manufactured.
  • Page 26 INSTALLATION Units with remote condenser Unit with remote condenser without capacity control Unit with remote condenser with capacity control H1: 15 m. maxi 1 - Lower trap with single tube H2: 5 m. maxi 2 - Lower trap coupled with higher trap H3: 0,3 m.
  • Page 27 INSTALLATION Condensing units Condensing unit without capacity control min 0,25% Condensing unit with capacity control Min Min. 0.25% gradient Min 0.25% gradient H1: 15 m. maxi 1 - Lower trap with single tube H2: 5 m. maxi 2 - Lower trap coupled with higher trap 3 - Lower trap with double tubes H4: 0,15 m.
  • Page 28 INSTALLATION 7.1. Liquid line sizing Determine the size of liquid lines using: Operating conditions at full load. Maximum pressure drop of 100 kPa Liquid velocity under 2 m/s (to avoid liquid slugging). For liquid risers, make sure that liquid sub cooling is sufficient to counteract the loss of static pressure and prevent gas flashing For MRC and HYDROLEAN units: If the refrigerant in the liquid line flashes to a gas because the pressure drops too low or because of an increase in elevation, then the refrigeration system will not operate correctly.
  • Page 29 INSTALLATION Correction tables for MRC and HYDROLEAN units: Condensing temperature °C Discharge gas velocity correction factors 1,37 1,25 1,15 1,07 1,01 0,96 0,93 0,92 Suction 1,41 1,30 1,20 1,11 1,05 1,00 0,97 0,96 temperature °C 1,47 1,34 1,24 1,16 1,09 1,04 1,01 1,00...
  • Page 30 INSTALLATION 7.6. Oil charge All units are delivered with a complete oil charge, and there is no need to add any oil before start up or afterwards. When a compressor is replaced and in the case of split units, it may be necessary, due to the length of piping installed, to add a certain amount of oil. Please refer to the following oil tables.

  • Page 31: Preliminary Checks

    In case of split units, check the installation has been made according to the recommendation described § Installation. The unit refrigeration circuit sketch is given in the «APPENDICES» at the end of the IOM or supplied with the unit. 3. HYDRAULIC SYSTEM INSTALLATION CHECKS (NEOSYS) The unit hydraulic sketch is given in the «APPENDIX» at the end of the IOM.
  • Page 32 PRELIMINARY CHECKS INLET/OUTLET SWC/SWR INLET/OUTLET SWH INLET/OUTLET MWC/MRC 180➔ 570 650➔720 CHILLER-IOM-2004-E...

  • Page 33: Hydraulic Connections And Options (For Hydrolean And Mwc)

    PRELIMINARY CHECKS 5. HYDRAULIC CONNECTIONS AND OPTIONS (FOR HYDROLEAN AND MWC) Standard connections are Victaulic type for MWC and external threaded for Hydrolean, flange connections (MWC only) and filters are options. Condenser Evaporator Plug DN: Diameter Water inlet OB: Flange option OF: Filter option Water outlet SE: Evaporator sensor + pocket bulb...

  • Page 34: Check List Before Start-Up

    PRELIMINARY CHECKS 6. CHECK LIST BEFORE START-UP 6.1. Check list of standard unit Check that all drain and purge plugs are in place and well tightened prior to fill the installation with water or glycolated water. Before proceeding with start-up, even for a test of short duration, check the following points, after having made sure that all the valves on the refrigeration circuit are fully open (discharge valves and liquid valves).

  • Page 35: Master-Slave Configuration (2 Units Or More)

    PRELIMINARY CHECKS 6.2. Check list before start-up of the total heat recovery option (NEOSYS only) Check that all drain and purge plugs are in place and well tightened prior to fill the total heat recovery installation with water or glycolated water.

  • Page 36: Operation

    OPERATION OPERATION 1. OPERATING LIMITS WARNING: It is very important to ensure that the units operate well inside these envelopes. 1.1. NEOSYS 230 ➔ 1080 ➔480 ➔680 ➔960 Min. outlet water temperature Min. outlet water temperature with glycolated water operation option Max.
  • Page 37 OPERATION NAH COOLING MODE 200 > 480 Min. outlet water temperature °C Max. inlet water temperature °C Min. difference water inlet/outlet °C Max. difference water inlet/outlet °C Min. outside air temperature °C Maximum outside air temperature, full capacity operation °C Evaporator Outlet water Temperature (°C) NAH HEATING MODE Min.
  • Page 38 OPERATION 1.2. HYDROLEAN COOLING AND HEATPUMP VERSION SIZE 025-035-050-070-080-100-120 Water + Glycol All units Evaporator Outlet water Temperature (°C) 1.3. HYDROLEAN COOLING AND HEATPUMP VERSION SIZE 135-160 Water + Glycol All units Evaporator Outlet water Temperature (°C) 1.4. HYDROLEAN WITH REMOTE CONDENSER (SIZES 025-035-050-070-080-100-120) Water + Glycol All units Evaporator Outlet water Temperature (°C)

  • Page 39: Climatic Control

    OPERATION Indication on Pipe sizing for SWR type units Discharge Line Liquid Line Circuit 1 Circuit 2 Circuit 1 Circuit 2 Min Ø min/max speed Min Ø min/max speed Min Ø min/max speed Min Ø min/max speed Inches Inches Inches Inches 7/8"...

  • Page 40: Unit Operation: Refrigeration Circuit

    OPERATION 3. UNIT OPERATION: REFRIGERATION CIRCUIT 3.1. Tandem and Trios scroll assemblies With tandem and trios assemblies the oil balancing is achieved through the use of a large two phase line tube It is IMPERATIVE that this tube is perfectly level during operation to ensure proper oil balancing between the two crankcases It is also IMPERATIVE for the compressor to be mounted on a rigid base frame as there is no flexibility in the oil equalizing line.
  • Page 41 A12 - Hysteresis of anti-freeze alarm 25,5 3.4. High and low pressure gauges (option not available on NEOSYS) They enable an instantaneous readout of suction and discharge pressures. Liquid filled gauges that measure the evaporating Low pressure (LP) and condensing high pressure (HP) on each refrigerant circuit.

  • Page 42: Unit Operation: Electrical And Control Features

    OPERATION 3.7. Fan control pressure switch and thermostat The function of these devices is to ensure a level of head pressure compatible with proper unit operation. An increase in outdoor air temperature increases head pressure, and this is maintained at its required value by fan operation. 3.8.
  • Page 43 OPERATION 4.4. Antifreeze protection (option) This feature is provided as standard by the climatic controller: and can be adjusted for glycolated water or glycol/water chilling for which the freezing temperature depends on the concentration of the solution. The antifreeze protection provided causes an immediate shut down of the unit c The controller monitors the chilled water outlet temperature.
  • Page 44 OPERATION 4.6. Control of external single pump for condenser (option) The optional protection of external pump for condenser can be selected on all HYDROLEAN units. It consists in the addition of a circuit breaker and contactor which is switched ON when the unit is ON and OFF when the unit is Off. This contactor can also be controlled by an external signal from the customer's installation: 24V dry contact to be connected directly on the pump 2 contactor.
  • Page 45 OPERATION Incompatibilities between options and features on HYDROLEAN UNIT TYPE AND SW 25 35 SW 50 70 80 SW 100 120 135 160 SIZE CONTROLLER Climatic 40 MODEL Remote ON / OFF Dynamic Set Point or Remote Heat/Cool or Dynamic Set Point Remote ON / OFF or Control on Hot Water AVAILABLE OPTIONS &...

  • Page 46: Other Features And Options

    OPERATION 5. OTHER FEATURES AND OPTIONS 5.1. Loss of power supply There are no problems restarting the machine after a loss of power supply of short duration (up to about one hour). If loss of power supply lasts longer than this, when power supply is resumed set the unit to «OFF» with the compressor crankcase heaters activated for as long as it takes to bring sump oil back up to temperature, then restart the unit.

  • Page 47: Maintenance

    MAINTENANCE MAINTENANCE 1. MAINTENANCE PLAN Warning: During the life-time of the system, inspection and tests must be carried out in accordance with national regulations. The information on operating inspections given in annex C of standard EN378 can be used if no similar criteria exist in the national regulations.
  • Page 48 MAINTENANCE MAINTENANCE PLAN Half Task Operating mode Monthly Quarterly Yearly Inspection of the microchannel coils Proper care to be given when cleaning the coils. If corrosion is aluminum-copper connections for detected, a preventive treatment needs to be done following our corrosion recommendations Cleaning the coils (In accordance with...
  • Page 49 MAINTENANCE MAINTENANCE PLAN Half Task Operating mode Monthly Quarterly Yearly Check refrigeration system for Retrieve/Check the values for superheating and sub cooling. proper functioning (Thermal Resume the expansion valve settings when needed, verify the expansion valve) behavior in partial loads and at 100%. Resume settings to obtain superheat between 5K and 10K.

  • Page 50: Cleaning The Condenser

    On this type of installation, all dust gathered on the coils should be quickly removed by regular cleaning. Caution: Except for NEOSYS range with microchannel coils, do not use high pressure cleaners that could cause permanent damage to the aluminium coil fins.

  • Page 51: Corrective Maintenance

    MAINTENANCE 4. CORRECTIVE MAINTENANCE MAKE SURE THAT THE UNIT IS COMPLETELY DISCONNECTED FROM THE POWER SUPPLY BEFORE CARRYING OUT ANY TYPE OF WORK ON THE UNIT. If some component in the cooling circuit must be replaced, follow these recommendations: • Always use original replacement parts. •...

  • Page 52: Troubleshooting - Repairs

    TROUBLESHOOTING – REPAIRS TROUBLESHOOTING – REPAIRS 1. LIST OF THE MOST COMMON PROBLEMS PROBLEMS – SYMPTOMS PROBABLE CAUSE RECOMMENDED ACTION A. THE COMPRESSOR DOES NOT START • No power supply • Motor control circuits established, the • Check main power supply and switch compressor does not run positions •...
  • Page 53 TROUBLESHOOTING – REPAIRS PROBLEMS – SYMPTOMS PROBABLE CAUSE RECOMMENDED ACTION • Suction pressure too low, Filter drier • Filter-drier obstructed • Check the state of the drier and frozen up replace the filter • Solenoid valve closed • Check that the valve is operating properly •...
  • Page 54 TROUBLESHOOTING – REPAIRS PROBLEMS – SYMPTOMS PROBABLE CAUSE RECOMMENDED ACTION THE COMPRESSOR CUTS OUT ON ITS MOTOR PROTECTION THERMAL RELAY • Thermal protection tripped • Check operation of thermal protection, change it if necessary • Motor windings are not being •...
  • Page 55 TROUBLESHOOTING – REPAIRS PROBLEMS – SYMPTOMS PROBABLE CAUSE RECOMMENDED ACTION DISCHARGE PRESSURE IS TOO LOW • • • Water is very cold at condenser outlet Condenser water flow too high or Adjust the pressure operated water water temperature is too low valve or the thermostat on the cooling tower/ dry cooler •...

  • Page 56: Control Devices

    TROUBLESHOOTING – REPAIRS 2. CONTROL DEVICES Operation By reacting to compressor discharge pressure, the high pressure switch monitors efficiency of the condenser. Poor efficiency, the result of an excessive condensing pressure, is usually caused by: • A dirty condenser • Low water flow •...

  • Page 57: Regular Checks To Be Made - Chiller Unit Environment

    TROUBLESHOOTING – REPAIRS 3. REGULAR CHECKS TO BE MADE - CHILLER UNIT ENVIRONMENT CHILLED WATER CIRCUIT VALUE Inlet / Outlet pressure gauges for pressure drop ........................kPa Evaporator inlet temperature ..............................°C Evaporator outlet temperature ..............................°C Glycol concentration (1) ................................% Flow switch operational at ..............................

  • Page 58: Manufacturer's Recommended Inspections

    TROUBLESHOOTING – REPAIRS 4. MANUFACTURER’S RECOMMENDED INSPECTIONS 4.1. LIQUID CHILLERS WITH SCROLL COMPRESSOR(S) 4.1.1. - Number of recommended preventive maintenance visits: NUMBER OF RECOMMENDED PREVENTIVE MAINTENANCE VISITS Major technical Tube analysis Year Start up 500/1000 h visit Inspection visit inspection Every 3 times a Every 3...

  • Page 59: Check List

    CHECK LIST CHECK LIST Machine identifications: Affair number: Year of manufacture: NORMAL CONDITIONS OF USE Leaving chilled water temperature: °C Outdoor air temperature: Max: Min: °C °C Power supply voltage: V/Ph/Hz Refrigerant type: Date and time measurements were taken: Outdoor air temperature: °C Company responsible for measurements: Name of technician:...
  • Page 60 CHECK LIST This check list should be filled in by the contractor to make sure that unit installation takes place according to appropriate industry practices. WARNING: Disconnect the power supply before carrying out any inspections on the unit. If the unit must be left powered up, proceed with precaution to avoid risk of electrocution.

  • Page 61: Appendix

    APPENDIX APPENDIX CHILLER-IOM-2004-E...

  • Page 62: General Refrigeration Circuit Diagram: Neosys Cooling Only

    APPENDIX 1. GENERAL REFRIGERATION CIRCUIT DIAGRAM: NEOSYS COOLING ONLY Some connection valves (Schrader type) are available to load/unload the circuit. NAC Refrigeration Circuit All NAC C1 &C2 1st & 2nd scroll compressors Thermostatic expansion valve Air cooled condenser Third scroll compressor on size...

  • Page 63: General Refrigeration Circuit Diagram: Neosys Cooling Only - With Total Heat Recovery Option

    APPENDIX 2. GENERAL REFRIGERATION CIRCUIT DIAGRAM: NEOSYS COOLING ONLY - WITH TOTAL HEAT RECOVERY OPTION Some connection valves (Schrader type) are available to load/unload the circuit Compressor (tandem or trio) Electronic expansion valve Pressure switch Cold water loop for air conditioning purpose...

  • Page 64: General Refrigeration Circuit Diagram: Neosys Heat Pump

    APPENDIX 3. GENERAL REFRIGERATION CIRCUIT DIAGRAM: NEOSYS HEAT PUMP Some connection valves (Schrader type) are available to load/unload the circuit. NAH Refrigeration Circuit All NAH C1 &C2 1st & 2nd scroll compressors Fan motor Non return valve High pressure switch...

  • Page 65: General Refrigeration Circuit Diagram: Hydrolean Cooling Only

    APPENDIX 4. GENERAL REFRIGERATION CIRCUIT DIAGRAM: HYDROLEAN COOLING ONLY Some connection valves (Schrader type) are available to load/unload the circuit. Main components Options 01.a/ 01.b/ Compressors 07a/ Low & high pressure gauges 01.c 07b/ Evaporator Pressure regulated water valve Condenser Thermostatic expansion valve Filter drier 06a/...
  • Page 66 APPENDIX Some connection valves (Schrader type) are available to load/unload the circuit. 100 - 120 - 135 - 160 High Pressure operated water valve for dual circuit units (option) Main components Options 01.a/ Compressors 01.b/ 07a/ Low & high pressure gauges 01.c 07b/ Evaporator...

  • Page 67: General Refrigeration Circuit Diagram: Hydrolean Heat Pump

    APPENDIX 5. GENERAL REFRIGERATION CIRCUIT DIAGRAM: HYDROLEAN HEAT PUMP Some connection valves (Schrader type) are available to load/unload the circuit. Main components 01.a/ Compressors Options 01.b/ 01.c 07a/ Evaporator Low & high pressure gauges 07b/ Condenser Thermostatic expansion valve Removable cartridge drier filter 06a/ Low &...
  • Page 68 APPENDIX Some connection valves (Schrader type) are available to load/unload the circuit. Main components Options 01.a/ Compressors 01.b/ 07a/ 01.c Low & high pressure gauges 07b/ Evaporator Condenser Thermostatic expansion valve Removable cartridge drier filter 06a/ Low & high pressure switch 06b/ 4 way reversing valve CHILLER-IOM-2004-E...

  • Page 69: General Refrigeration Circuit Diagram: Hydrolean Remote Condenser

    APPENDIX 6. GENERAL REFRIGERATION CIRCUIT DIAGRAM: HYDROLEAN REMOTE CONDENSER Some connection valves (Schrader type) are available to load/unload the circuit. Main components 01.a/ Manual shut off valve Compressors 01.b/ Liquid solenoid valve 01.c Evaporator Condenser Options Thermostatic expansion valve 07a/ Low &...
  • Page 70 APPENDIX Main components Liquid solenoid valve 01.a/ Compressors 01.b/ 01.c Evaporator Options Condenser 07a/ Thermostatic expansion valve Low & high pressure gauges 07b/ Removable cartridge drier filter 06a/ Low & high pressure switch 06b/ Manual shut off valve CHILLER-IOM-2004-E...

  • Page 71: General Refrigeration Circuit Diagram: Mwc

    APPENDIX 7. GENERAL REFRIGERATION CIRCUIT DIAGRAM: MWC Some connection valves (Schrader type) are available to load/unload the circuit. Circuit 1 & 2: 2 or 3 compressors per circuit Main components High pressure safety switch Compressors Water cooled evaporator High and low pressure transducers Water cooled condenser High pressure safety switch Expansion valves...

  • Page 72: General Refrigeration Circuit Diagram: Mrc

    APPENDIX 8. GENERAL REFRIGERATION CIRCUIT DIAGRAM: MRC Some connection valves (Schrader type) are available to load/unload the circuit. Circuit 1 & 2: 2 or 3 compressors per circuit Main components Compressors High pressure safety switch Water cooled evaporator High and low pressure transducers Water cooled condenser High pressure safety switch Expansion valves...

  • Page 73: General Mechanical Drawing- Nac/Nah

    APPENDIX 9. GENERAL MECHANICAL DRAWING– NAC/NAH NAC 200 / 230 / 270 NAH 200 / 230 LEGEND : Water inlet - Unit without hydraulic module - 4’’Victaulic ln 1 Water inlet - Unit with hydraulic module - 4’’ Victaulic ln 2 Water outlet - 4’’...
  • Page 74 APPENDIX NAH 270 GENERAL MECHANICAL DRAWING LEGEND : Water inlet - Unit without hydraulic module - 4’’Victaulic ln 1 Water inlet - Unit with hydraulic module - 4’’ Victaulic ln 2 Water outlet - 4’’ Victaulic LOAD DITRIBUTION (Kg - Operating weights with dual pump hydraulic module) G1/D1 G2/D2 G3/D3...
  • Page 75 APPENDIX NAC 300 GENERAL MECHANICAL DRAWING NAH 300 LEGEND : ln 1 Water inlet - Unit without hydraulic module - 4’’Victaulic Water inlet - Unit with hydraulic module - 4’’ Victaulic ln 2 Water outlet - 4’’Victaulic Out 1 Water outlet - Unit with hydraulic module - 4’’Victaulic Out 2 LOAD DITRIBUTION (Kg - Operating weights with dual pump hydraulic module)
  • Page 76 APPENDIX NAC 340/ 380 GENERAL MECHANICAL DRAWING NAH 340 LEGEND : Water inlet - Unit without hydraulic module - 5’’Victaulic ln 1 Water inlet - Unit with hydraulic module - 5’’ Victaulic ln 2 Water outlet - Unit without hydraulic module or with Out 1 variable speed drive - 5’’Victaulic Water outlet - Unit with hydraulic module - 5’’Victaulic...
  • Page 77 APPENDIX NAC 420/480 GENERAL MECHANICAL DRAWING NAH 380/420/480 480 380/420/480 LEGEND : Water inlet - Unit without hydraulic module - 6’’Victaulic ln 1 Water inlet - Unit with hydraulic module - 6’’ Victaulic ln 2 Water outlet - Unit without hydraulic module or with Out 1 variable speed drive - 6’’Victaulic Water outlet - Unit with hydraulic module - 6’’Victaulic...
  • Page 78 APPENDIX NAC 540 GENERAL MECHANICAL DRAWING LEGEND : Water inlet - Unit without hydraulic module - 6’’Victaulic ln 1 Water inlet - Unit with hydraulic module - 6’’ Victaulic ln 2 Water outlet - Unit without hydraulic module or with Out 1 variable speed drive - 6’’Victaulic Water outlet - Unit with hydraulic module - 6’’Victaulic...
  • Page 79 APPENDIX NAC 600/640 GENERAL MECHANICAL DRAWING LEGEND : Water inlet - Unit without hydraulic module - 6’’Victaulic ln 1 Water inlet - Unit with hydraulic module - 6’’ Victaulic ln 2 Water outlet - Unit without hydraulic module or with Out 1 variable speed drive - 6’’Victaulic Water outlet - Unit with hydraulic module - 6’’Victaulic...
  • Page 80 APPENDIX NAC 680/760 GENERAL MECHANICAL DRAWING LEGEND : Water inlet Water outlet Note: In case of single main power connection (option), main power supply and disconnect switch are located at the right side of the unit. LOAD DITRIBUTION (Kg - Operating weights with dual pump hydraulic module) NAC 680 NAC 760 Lennox recommend load distribution as detailed above.
  • Page 81 APPENDIX NAC 840 / 960 / 1080 GENERAL MECHANICAL DRAWING LEGEND : Water inlet Water outlet Note: In case of single main power connection (option), main power supply and disconnect switch are located at the right side of the unit. LOAD DITRIBUTION (Kg - Operating weights with dual pump hydraulic module) NAC 840...

  • Page 82: General Mechanical Drawing Hydrolean

    APPENDIX HYDROLEAN 025 / 035 10. GENERAL MECHANICAL DRAWING HYDROLEAN LOAD DITRIBUTION CLEARANCES (Kg - Operating weights) PIPING ANTI-VIBRATION MOUNTS (OPTION) A Box 025/035 EVAPORATOR All units Water inlet 1" 1/2 DN40 Water outlet 1" 1/2 DN40 CONDENSER Water inlet D 1"...
  • Page 83 APPENDIX HYDROLEAN 050/070/080 GENERAL MECHANICAL DRAWING LOAD DITRIBUTION CLEARANCES (Kg - Operating weights) PIPING ANTI-VIBRATION MOUNTS (OPTION) B Box 050/070/080 EVAPORATOR Water inlet 1" 1/2 DN40 Water outlet 1" 1/2 DN40 CONDENSER HYDROLEAN Water inlet D 1" 1/2 DN40 APK100/ Type of rubber mounts APK80/75Sh A 60Sh A...
  • Page 84 APPENDIX HYDROLEAN 100/120/135/160 GENERAL MECHANICAL DRAWING LOAD DITRIBUTION CLEARANCES (Kg - Operating weights) PIPING ANTI-VIBRATION MOUNTS (OPTION) C Box 100/120/135/160 EVAPORATOR Water inlet 2" DN50 Water outlet 2" DN50 CONDENSER HYDROLEAN 100/120/135/160 Water inlet 2" DN50 Type of rubber mounts APK100/75Sh A Water outlet 2"...

  • Page 85: General Mechanical Drawing Mwc

    APPENDIX MWC 180 11. GENERAL MECHANICAL DRAWING MWC Fixing detail view Fixing detail view In / Out Ø 4" Victaulic MWC 180 MRC 180 Evaporator Water inlet 4" 4" Water outlet Out1 4" 4" Condenser Water inlet 4" Water outlet Out2 4"...
  • Page 86 APPENDIX MWC 230 ➔ 380 GENERAL MECHANICAL DRAWING Fixing detail view Fixing detail view In / Out= Ø 4" Victaulic 230 ➔ 380 Evaporator Water inlet 4" 4" Water outlet Out1 4" 4" Condenser Water inlet 4" Water outlet Out2 4"...
  • Page 87 APPENDIX MWC 450 ➔ 570 GENERAL MECHANICAL DRAWING Fixing detail view In / Out= Ø 5" Victaulic Fixing detail view 450 ➔ 570 450 ➔ 570 Evaporator Water inlet 5" 5" Water outlet Out1 5" 5" Condenser Water inlet 5" Water outlet Out2 5"...
  • Page 88 APPENDIX MWC 650 ➔ 720 GENERAL MECHANICAL DRAWING Fixing detail view In / Out= Ø 5" Victaulic Fixing detail view MRC 650 MRC 720 650 ➔ 720 Evaporator Water inlet 5" 5" 5" Water outlet Out1 5" 5" 5" Condenser Water inlet 5"...
  • Page 89 APPENDIX HYDRAULIC DATA 1. All Victaulic connections 2. Inlet filter (supplied loose) 3. Automatic air vent 4. Expansion vessel & manometer 5. Single or dual pump, high or low pressure 6. Flow switch 7. High performance stainless steel evaporator 8. Pressure adjustment valve 9.

  • Page 90: Pressure Drops- Neosys

    APPENDIX NEOSYS 12. PRESSURE DROPS- NEOSYS EVAPORATOR AND CONDENSER CURVES Curves Condenser option Evaporator 1080 Water flow (m3/h) Water flow (m3/h) �� ∆�� = �� �� �� ∆�� = �� �� NEOSYS NEOSYS 200/230 0.0570 1.8516 0.0100 1.8327 0.0419 1.8695 0.0052...
  • Page 91 APPENDIX NEOSYS PRESSURE DROP FILTER CURVE NAC/NAH Curve Curve 1080 Water flow (m3/h) Size of the filter mesh: 1 mm ΔP = a X NEOSYS 200/230/270/300 3,32E-03 1,7409 340/380/420/480 1,10E-06 3,1026 540/600/640 8,00E-09 4,023 680/760/840/960/1080 5,00E-10 4,2717 CHILLER-IOM-2004-E...

  • Page 92: Pressure Drops - Hydrolean

    APPENDIX HYDROLEAN 13. PRESSURE DROPS - HYDROLEAN HYDROLEAN Evaporator/Condenser curve PRESSURE DROP OF HYDROLEAN PLATE HEAT EXCHANGERS WITH CLEAR WATER Water flow (m3/h) PRESSURE DROP OF HYDROLEAN PLATE HEAT EXCHANGERS WITH WATER AND ETHYLENE GLYCOL 30% Water flow (m3/h) CHILLER-IOM-2004-E...
  • Page 93 APPENDIX HYDROLEAN PRESSURE DROPS FILTERS Water filter diameter W = 1'' 1/2 X = 2'' Y = 2'' 1/2 Z = 3'' Water flow (m3/h) HYDROLEAN Filter curve "FULLY OPEN" PRESSOSTATIC CONTROL WATER VALVE Water flow (m3/h) HYDROLEAN Pressure regulated valve WVFX25 WVFX25 WVS32 WVS32 WVS32...

  • Page 94: Pressure Drops- Mwc

    APPENDIX 14. PRESSURE DROPS- MWC EVAPORATORS CURVE Water flow (m3/h) CONDENSER CURVE Water flow (m3/h) FILTER CURVE Curves Evaporator Condenser Filter DN100 DN100 DN100 DN100 DN100 DN125 DN125 DN125 DN125 DN125 Pressure drops are given for information only, A tolerance of +/- 20kPa must be considered when selecting water pumps Water flow (m3/h) CHILLER-IOM-2004-E...
  • Page 96 OTHER COUNTRIES : LENNOX DISTRIBUTION +33 4 72 23 20 20 Due to LENNOX EMEA ongoing commitment to quality, the specifications, ratings and dimensions are subject to change without notice and without incurring liability. Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury.

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