Emicon RAH MC HT Ka Technical Manual For Installation, Use And Maintenance
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Emicon RAH MC HT Ka Technical Manual For Installation, Use And Maintenance

Air cooled chillers equipped with screw compressors, axial fans and microchannel condensing coils high ambient temperature operation
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RAH MC HT Ka
AIR COOLED CHILLERS EQUIPPED WITH SCREW COMPRESSORS, AXIAL FANS
AND MICROCHANNEL CONDENSING COILS
HIGH AMBIENT TEMPERATURE OPERATION
TECHNICAL MANUAL FOR INSTALLATION
USE AND MAINTENANCE
Multiple instructions:
the instructions before
the unit
MTEC.ERAH
ERAH MC HT
Rev. A 12-2018

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  • Page 1 RAH MC HT Ka AIR COOLED CHILLERS EQUIPPED WITH SCREW COMPRESSORS, AXIAL FANS AND MICROCHANNEL CONDENSING COILS HIGH AMBIENT TEMPERATURE OPERATION TECHNICAL MANUAL FOR INSTALLATION USE AND MAINTENANCE Multiple instructions: the instructions before the unit MTEC.ERAH ERAH MC HT Rev. A 12-2018...
  • Page 2 RAH MC HT Ka Water chiller - high ambient temperature operation Declaration of conformity MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...

  • Page 3: Table Of Contents

    RAH MC HT Ka Water chiller - high ambient temperature operation INDEX 1. INTRODUCTION ..............................................................................................................................................................................................................................................................................................................................................2. SAFETY ....................................................................................................................................................................................3. TECHNICAL CHARACTERISTICS ................................................................3.2 Other versions ...................................
  • Page 4 RAH MC HT Ka Water chiller - high ambient temperature operation 6.5 ALARM ..................................6.6 CIRC ................................... 6.7 SERVICE ................................................................ 7. UNIT MAINTENANCE .................................................................... 7.2 Access to the unit ............................................................................................................................8. DECOMMISSIONING ...........................................................................................

  • Page 5: Introduction

    RAH MC HT Ka Water chiller - high ambient temperature operation 1. INTRODUCTION 1.1 Preliminary information these instructions. 1.2 Aim and content of the manual instructions. 1.3 How to store this manual user. 1.4 Manual Update 1.5 How to use this manual MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 6 RAH MC HT Ka Water chiller - high ambient temperature operation 1.6 Potential Risks LOCATION OF POTENTIAL RISK METHOD OF INJURY PRECAUTIONS RISK Burns. severe burns. unit enclosure severe burns. severe burns. Entire unit Entire unit MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 7 RAH MC HT Ka Water chiller - high ambient temperature operation 1.7 General Description of Symbols Used BANNED WARNING ACTION REQUIRED MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 8 RAH MC HT Ka Water chiller - high ambient temperature operation 1.8 Safety symbols used GENERAL RISK ELECTRICAL HAZARD MOVING PARTS HOT SURFACES SHARP SURFACES EARTH CONNECTION READ AND UNDERSTAND THE INSTRUCTIONS RECOVER OR RECYCLE MATERIAL 1.9 Limitations and prohibited use MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 9 RAH MC HT Ka Water chiller - high ambient temperature operation NB 0948 TEL.+39 0543495611 FAX+39 0543 495612 Via A.Volta 49 Meldola FC ITALY MODELLO ANNO DI COSTRUZIONE / PED CATEGORIA 2018 MODEL MANIFACTURE YEA R/ PED CATEGORY JAHR VON KONSTRUCT / PED KATEGORIE MODèLE...

  • Page 10: Safety

    RAH MC HT Ka Water chiller - high ambient temperature operation 2. SAFETY 2.1 Warning re potentially hazardous toxic substances • ENVIRONMENTAL PROTECTION : 2.1.3 Persistence and degradation 2000. 2.1.4 Effects of discharges 2.1.5 Exposure controls and personal protection 2.1.6 Professional exposure limits R134a 2.2 Refrigerant handling...
  • Page 11 RAH MC HT Ka Water chiller - high ambient temperature operation 2.3 Prevent inhalation of high vapor concentration 2.4 Procedures to be adopted in the event of accidental release of refrigerant 2.5 Main Toxicological Information Regarding the Type of refrigerant used 2.5.1 Inhalation...

  • Page 12: Technical Characteristics

    RAH MC HT Ka Water chiller - high ambient temperature operation 3. TECHNICAL CHARACTERISTICS 3.1 Unit description 3.1.1 Structure 3.1.2 Compressors 3.1.3 Evaporator 3.1.4 Economizer 3.1.5 Coils 3.1.6 Fans MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 13 RAH MC HT Ka Water chiller - high ambient temperature operation 3.1.7 Refrigerant circuit 3.1.8 Electrical cabinet 3.1.9 Microprocessor MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...

  • Page 14: Other Versions

    RAH MC HT Ka Water chiller - high ambient temperature operation 3.2 Other versions 3.2.1 Standard version 3.2.2 Version with partial heat recovery (RP) 3.3 Accessories description Amperometer: Electrical power supply different than standard: Operation in cooling mode down to -10°C (by modulating voltage control):...
  • Page 15 RAH MC HT Ka Water chiller - high ambient temperature operation Liquid injection: Rubber-type vibration dampers: Spring-type vibration dampers: Remote display: Anti-freeze heater on evaporator: Shut-off valve on compressors discharge side: Shut-off valve on compressors suction side: Compressor overload relays:...
  • Page 16 RAH MC HT Ka Water chiller - high ambient temperature operation 3.4 Technical data RAH MC HT Ka RAH MC HT Ka IPLV 131600 150400 169200 188000 225600 225600 1430 1430 1430 1430 1430 1430 on the unit. MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 17 RAH MC HT Ka Water chiller - high ambient temperature operation RAH MC HT Ka RAH MC HT Ka 1102 1302 1502 1136 IPLV 188000 225600 263200 300800 338400 376000 1430 1430 1430 1430 1430 1430 on the unit. MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 18 RAH MC HT Ka Water chiller - high ambient temperature operation 3.5.1 1,25 40°C 42°C 1,15 44°C 46°C 1,05 48°C 50°C 0,95 52°C 0,85 0,75 0,65 5,55 6,67 7,77 8,88 10,0 11,11 3.5.2 46°C 1,05 48°C 44°C 42°C 0,95 50°C 40°C...
  • Page 19 RAH MC HT Ka Water chiller - high ambient temperature operation 3.5 Operational limits -14 -10 -6 -2 6 10 14 18 22 26 30 34 38 42 46 50 54 58 90 100 110 120 130 140 3.5.2 User water temperature (summer operation) 3.5.3 Ambient air temperature...
  • Page 20 RAH MC HT Ka Water chiller - high ambient temperature operation 3.8 Correction tables 3.8.1 Operation with glycol Glycol percentage Freezing point (°C) IPCF WFCF PDCF -3.2 0.985 1.02 1.08 -7.8 0.98 0.99 1.05 1.12 -14.1 0.97 0.98 1.09 1.22 -22.3...

  • Page 21: Installation

    RAH MC HT Ka Water chiller - high ambient temperature operation 3.8 Sound data RAH MC HT Ka Octave bands (Hz) Lp10 Mod. dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) 1102 1302 1502 4. INSTALLATION 4.1 General safety guidelines and and use of symbols tion.

  • Page 22: Inspection

    RAH MC HT Ka Water chiller - high ambient temperature operation 4.2 Health and safety Considerations 4.3 Personal protective equipment 4.4 Inspection In Case of Damage MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 23 RAH MC HT Ka Water chiller - high ambient temperature operation 4.5 Storage 4.6 Unpacking 4.7 Lifting and handling MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 24 RAH MC HT Ka Water chiller - high ambient temperature operation 4.8 Location and minimum technical clearances 2470 5360 2260 2000 2000 2000 2470 5360 2260 2000 2000 2000 2470 6700 2260 2000 2000 2000 2470 6700 2260 2000 2000...
  • Page 25 RAH MC HT Ka Water chiller - high ambient temperature operation 4.10 Serial interface card RS485 (INSE) Supervision 4.12 Hydraulic connections • • • • • • °C °C MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 26 RAH MC HT Ka Water chiller - high ambient temperature operation Cooling mode: 4.13 Chemical characteristics of the water Oxygen O Electrical conductivity Nitrates NO Sulphates SO Assente Bicarbonate HCO Assente Chloride Cl Chlorites Assente Phosphate PO4 3 Free chlorine...
  • Page 27 RAH MC HT Ka Water chiller - high ambient temperature operation 4.15 User circuit minimum water content Model Minimum (l) 2800 3400 3900 4400 5000 5500 Model 1102 1302 1502 Minimum (l) 2300 2500 2900 3300 3900 4400 4.17 Filling the hydraulic circuit •...
  • Page 28 RAH MC HT Ka Water chiller - high ambient temperature operation 4.15.1 Corrosive environmental conditions 4.15.2 Microchannel aluminium condensing coils with AiAX_Coating treatment (Optional ECP) MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 29 RAH MC HT Ka Water chiller - high ambient temperature operation 4.20 Electric connections: preliminary safety information FROST PROTECTION MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 30 RAH MC HT Ka Water chiller - high ambient temperature operation 4.21 Electric data The use of the unit with a power supply with higher variations than those indicated will invalidate the war- ranty. Model Power supply Control board 24 V...

  • Page 31: Unit Start Up

    RAH MC HT Ka Water chiller - high ambient temperature operation 5. UNIT START UP 5.1 Preliminary checks 5.1.1 Before start-up • • • • • • • • • • • • • MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 32 RAH MC HT Ka Water chiller - high ambient temperature operation 5.1.2 Device and security Set-point Device Set-point Differential Reset ----- 50 * ** ----- ---- ----- ---- ----- ---- support. 5.1.3 Controls during unit operation • • 5.1.4 Start with high temperatures of the user liquid (Hot Start) (HLS)
  • Page 33 RAH MC HT Ka Water chiller - high ambient temperature operation 5.1.5 Safety valves people. MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 34 RAH MC HT Ka Water chiller - high ambient temperature operation 5.2 Position of the control panel Unit ON: Cooling 00:00 01/01/2014 Evaporator inlet temperature 12.0 °C Evaporator outlet temperature °C External air temp. (FC) °C PROBES ALARM SERVICE CIRC.
  • Page 35 RAH MC HT Ka Water chiller - high ambient temperature operation 5.2.2 Key function PROBES ALARM SERVICE CIRC Stand-by 00:00 01/01/2014 Evaporator inlet temperature 12.0 °C Evaporator outlet temperature °C External air temp. (FC) °C San. water temperature PROBES ALARM SERVICE CIRC.
  • Page 36 RAH MC HT Ka Water chiller - high ambient temperature operation 5.3 To remote the control 5.3.1 Remote keyboard connection (VGI890) ENTER Rosso / Red Nero / Black Nero / Black Bianco / White Bianco / White Rosso / Red •...

  • Page 37: Use

    RAH MC HT Ka Water chiller - high ambient temperature operation 6. USE 6.1 Switch the unit on Unit 6.1.1 Switch the unit on from the keyboard Cooling mode 6.1.2 Cooling mode Unit ON: Cooling 00:00 01/01/2014 Evaporator inlet temperature 12.0...

  • Page 38: Stop

    RAH MC HT Ka Water chiller - high ambient temperature operation 6.1.3 Switch the unit on from from digital input Remote OFF 00:00 01/01/2014 Evaporator inlet temperature 12.0 °C Evaporator outlet temperature °C PROBES ALARM SERVICE CIRC. 6.2 Stop Unit ON: Cooling...
  • Page 39 RAH MC HT Ka Water chiller - high ambient temperature operation press EXIT Press 6.3.1 Adjustable parameters Function Adjustment limit Default value 6.4 PROBES key PROBES Stand-by 00:00 01/01/2014 Evaporator inlet temperature 12.0 °C Evaporator outlet temperature °C PROBES ALARM SERVICE CIRC.
  • Page 40 RAH MC HT Ka Water chiller - high ambient temperature operation Probes visualization Evaporator inlet temperature 28.0 °C Evaporator outlet temperature 26.6 °C Condenser press./temp.circ.1 18.8 ALARM EXIT EXIT Press 6.5 ALARM key Press ALARM Unit ON: Heating Alarms 00:00 01/01/2014...
  • Page 41 RAH MC HT Ka Water chiller - high ambient temperature operation 6.6 CIRC key CIRC ENTER State of the compressors Color black: Color white: level of step control. Unit ON: Heating 00:00 01/01/2014 12.0 °C Evaporator inlet temperature °C Evaporator outlet temperature...
  • Page 42 RAH MC HT Ka Water chiller - high ambient temperature operation Unloading status Compressor status Circuit 1 Circuit 1 unloading not ongoing 51 % Circuit 2 Circuit 2 ALARM EXIT ALARM EXIT Evaporating-condensing probe Evaporator pump status Evap. pump 2 Evap.
  • Page 43 RAH MC HT Ka Water chiller - high ambient temperature operation 6.7 SERVICE key ENTER EXIT ENTER EXIT Press the SERVICE Press ENTER Press the EXIT MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 44 RAH MC HT Ka Water chiller - high ambient temperature operation 6.7.1 Service parameters setting ENTER 1st level password (Pr1) ALARM EXIT 1st level password (Pr1) Password OK! Press ENTER to continue ALARM ENTER EXIT Press ENTER Code Meaning Code...
  • Page 45 RAH MC HT Ka Water chiller - high ambient temperature operation press Parameter group selection St01 10.0 °C St02 °C St03 15.0 °C St04 40.0 °C Set point Summer set point ALARM ENTER EXIT ALARM EXIT Parameter group selection Sd01 °C...
  • Page 46 RAH MC HT Ka Water chiller - high ambient temperature operation Weather compensated function Parameter group selection FS02 FS03 45.0 °C FS04 °C Sanitary circuit Sanitary water priority ALARM ENTER EXIT ALARM EXIT MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 47 RAH MC HT Ka Water chiller - high ambient temperature operation 6.7.2 Setting date and time ENTER Press Clock setting : 07 Energy saving Disabled Data setting 05 / 7 / 14 ON/OFF scheduling Disabled Dat of the week Tuesday...
  • Page 48 RAH MC HT Ka Water chiller - high ambient temperature operation 6.7.3 Compressor maintenance ENTER ENB/DIS press ENTER Circuit 1 Compressor mainteinance Status Hour Start-up Reset Comp 1 Comp 1 Comp 1 abilitato Circuit 1 Circuit 2 ALARM ENTER EXIT...
  • Page 49 RAH MC HT Ka Water chiller - high ambient temperature operation 6.7.6 Alarms ENTER Alarms b1HP Attivo Active Aktiv Clock alarm RST ALL RESET EXIT 6.7.7 Alarm log ENTER RST ALL people. Alarm log b1HP High pressure circuit 1 b1AC...
  • Page 50 RAH MC HT Ka Water chiller - high ambient temperature operation Press Defrost circ. 1: cycle not in progress Defrost circ. 1: cycle not in progress Condenser 1 probe Defrost end set 36.2 bar 36.2 bar Evaporator 1 probe Combined defrost probe N.C.
  • Page 51 RAH MC HT Ka Water chiller - high ambient temperature operation 6.7.11 Screw compressor (If available) ENTER ENTER Screw compressors Screw compressors circ. 1 Discharge temperature 86.0 °C Disch.temp.alarm 100.0 °C 10.0 °C Liquid injection valve Liquid inject. set 30.0 °C 0.1 °C...
  • Page 52 RAH MC HT Ka Water chiller - high ambient temperature operation 6.7.13 Sanitary water ENTER . Press Sanitary water: Antilegionella cycle: disabled Sanitary water temp. Sanitary water temp. 44.9 °C 45.3 °C Sanitary water Set point Antilegionella set point 50.0 °C...
  • Page 53 RAH MC HT Ka Water chiller - high ambient temperature operation 7. MAINTENANCE OF THE UNIT 7.1 General warnings • • • 7.2 Drive access MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 54 RAH MC HT Ka Water chiller - high ambient temperature operation 7.3 Routine maintenance Sight Inspection Pressure test Leak detection CASE (par. 4.2, p.ti a - l) 7.3 Periodical checks MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 55 RAH MC HT Ka Water chiller - high ambient temperature operation 7.4.1 Electrical system and control devices Frequency Actions Once 7.4.2 Condensing coils fans and cooling circuit Frequency Actions Once every three months MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 56 RAH MC HT Ka Water chiller - high ambient temperature operation 7.4.3 Compressor Frequency Actions Once 7.4.4 Microchannel condensing coils cleaning MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 57 RAH MC HT Ka Water chiller - high ambient temperature operation 7.4.5 Microchannel coils treated with AiAX coating cleaning 7.3.2 End of seasons or unit switched off: 7.4 Refrigerant circuit repair Therefore: • • • • • • MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 58 RAH MC HT Ka Water chiller - high ambient temperature operation 8. DECOMMISSIONING 8.1 Disconnect the unit • • • • • 8.2 Disposal, recovery and recycling 8.3 RAEE Directive (only UE) • • collection center. • • • MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 59 RAH MC HT Ka Water chiller - high ambient temperature operation 9. DIAGNOSIS AND TROUBLESHOOTING PEATED RESET MAY RESULT IN IRREVOCABLE DAMAGE TO THE UNIT AND IMMEDIATELY VOID THE WARRANTY Code Alarm Description Cause Solution ACF1 ACF2 ACF3 ACF4 ACF5...
  • Page 60 RAH MC HT Ka Water chiller - high ambient temperature operation Code Alarm Description Cause Solution sensor. AtE1 AtE2 Restore the correct user circuit B1 HP b1AC b1AH b1dF b1hP circuit 1 B1LP b1lP circuit 1 b1tF C1tr C2tr MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English...
  • Page 61 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 481 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 62 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 571 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 63 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 661 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 64 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 761 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 65 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 782 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 66 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 832 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 67 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 841 - 941 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 68 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 962 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 69 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 1102 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 70 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 1302 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 71 RAH MC HT Ka Water chiller - high ambient temperature operation RAH 1502 MC HT Ka MTEC.ERAH.GB-A-1 Operation and maintenance manual ERAH MC HT Ka series English Rev. A 12-2018...
  • Page 72 HIDROS Srl...

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