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HIdRos LDA Series Technical Manual
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HIdRos LDA Series Technical Manual

Air to water chillers
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AIR TO WATER CHILLERS
LDA
SERIES
TECHNICAL MANUAL
Multiple instructions:
the instructions before
the unit
MTEC.3900
Rev. E 11-2021

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Summary of Contents for HIdRos LDA Series

  • Page 1 AIR TO WATER CHILLERS SERIES TECHNICAL MANUAL Multiple instructions: the instructions before the unit MTEC.3900 Rev. E 11-2021...
  • Page 2 Air to water chillers Declaration of conformity MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...

  • Page 3: Table Of Contents

    ....................................................................................................................................................................................................................................................................................................................................................................................................4.20 Electric connections ............................................................5. UNIT START UP ........................................................................................................................................................... MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 4 ......................................................8. UNIT MAINTENANCE .................................................................... 8.2 Access to the unit ............................................................................................9. DECOMMISSIONING ....................................9.1 Disconnect the unit ........................................................................................................................................................................MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...

  • Page 5: 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.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 6 Air to water chillers 1.6 Potential Risks POTENTIAL LOCATION OF METHOD OF INJURY PRECAUTIONS RISK RISK Burns. severe burns. unit enclosure severe burns. unit. severe burns. open. Entire unit Entire unit MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 7 Air to water chillers 1.7 General Description of Symbols Used BANNED WARNING ACTION REQUIRED MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 8 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.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 9 Air to water chillers +39 049 9731022 MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...

  • Page 10: Safety

    2.1 Warning re potentially hazardous toxic substances 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 R410A 2.2 Refrigerant handling MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 11 2.5 Main Toxicological Information Regarding the Type of refrigerant used 2.5.1 Inhalation sphere. 2.5.2 Contact with skin 2.5.3 Contact with eyes 2.5.4 Ingestion 2.6 First Aid Measures 2.6.1 Inhalation 2.6.2 Contact with skin MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 12 2.6.4 Ingestion 2.6.5 Further medical treatment 3. TECHNICAL CHARACTERISTICS 3.1 Unit description 3.1.1 Frame 3.1.2 Refrigerant circuit 3.1.3 Compressors 3.1.4 Source heat exchanger 3.1.5 Fans 3.1.6 User heat exchangers MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...

  • Page 13: Other Versions

    3.2.5 HE Version 3.2.6 Units with integrated hydraulic kit, tank & pump (A1ZZU - A2ZZU) The units 3.2.7 Units with integrated hydraulic kit, pump no tank (A1NU-A2NTU) The units MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 14 3.3.5 Pressure gauges (MAML) This 3.3.7 Electronic soft starter (DSSE) 3.3.8 Remote control panel (PCRL) This 3.3.9 RS485 serial interface card modbus protocol (INSE) 3.3.10 Electronic expansion valve (VTEE) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 15 Air to water chillers 3.3.11 Fan speed control (DCCF) This 3.3.12 Partial heat recovery (RP00) 3.3.13 Liquid line solenoid valve (VSLI) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 16 2088 2088 37,58 62,64 52,20 69,90 69,90 83,52 83,52 104,40 152,28 146,16 187,92 187,92 1000 1000 1000 1000 * Units only available for the non-EU market on the unit. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 17 2088 2088 37,58 62,64 52,20 69,90 69,90 83,52 83,52 104,40 152,28 146,16 187,92 187,92 1000 1000 1000 1000 * Units only available for the non-EU market on the unit. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 18 2088 2088 2088 2088 2088 2088 2088 62,64 62,64 62,64 62,64 83,52 83,52 104,40 152,28 104,40 152,28 187,92 5000 1000 1000 1000 1000 1000 1000 1000 on the unit. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 19 2088 2088 2088 2088 2088 2088 2088 2088 2088 62,64 62,64 62,64 62,64 83,52 83,52 104,40 152,28 104,40 152,28 187,92 1000 1000 1000 1000 1000 1000 on the unit. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 20 3.4.1 Cooling capacity and compressors input power External temp. 43°C 40°C 35°C 30°C 25°C 20°C User water out temperature (°C) 20°C 25°C 30°C 35°C 40°C External temp. 43°C User water out temperature (°C) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 21 Air to water chillers 3.5 Operational limits - 10 3.5.2 User water temperature (summer operation) 3.5.3 Ambient air temperature MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 22 … 1202 … … 1402 … … 1602 … … 1802 … … 2002 … … 2302 … … 2502 … … 2504 3004 3204 3504 4004 4504 5004 MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 23 3.7.3 Correction tables different Fouling factors Fouling factor 0.00005 0.0001 0.0002 CCCP 0.98 0.94 IPCF 0.98 0.95 CCCP = Cooling capacity correction factor IPCF = Input power correction factor MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 24 Air to water chillers 3.8 Sound data SA / LS Octave bands (Hz) Mod. dB(A) dB(A) SE / LS MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 25 Air to water chillers SA / XL Mod. dB(A) dB(A) SE / XL MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 26 Air to water chillers HA / LS Octave bands (Hz) Mod. dB(A) dB(A) HE / LS MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 27 Air to water chillers HA / XL Mod. dB(A) dB(A) HE/ XL MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 28 Air to water chillers 4. INSTALLATION 4.1 General safety guidelines and and use of symbols tions. tion. 4.2 Health and safety Considerations 4.3 Personal protective equipment MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...

  • Page 29: Inspection

    Air to water chillers 4.4 Inspection In Case of Damage 4.5 Storage 4.5.1 Shipment 4.6 Unpacking 4.7 Lifting and handling MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 30 1000 1000 F (mm) HA-HE/XL 1000 1000 1000 1000 1000 1000 1000 1000 1000 G (mm) HA-HE/XL 1000 1000 1000 1000 1000 1000 1000 1000 1000 H (mm) HA-HE/XL MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 31 1000 1000 1000 1000 1000 1000 1000 1500 1500 1500 1500 G (mm) HA-HE/XL 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 H (mm) HA-HE/XL MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 32 1500 1500 1500 1500 1500 1500 1500 1500 1500 1500 1500 G (mm) HA-HE/XL 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 H (mm) HA-HE/XL MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 33 4.9 Installation of rubber vibration dampers (KAVG) sez A - A ØM ØD ØE Mod. 252÷302 402÷602 702÷2002 2504÷5004 4.10 Serial interface card RS485 (INSE) Supervision 4.10.1 Modd. 252 ÷ 2502 WITH ADAPTER UNITS MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 34 Air to water chillers 4.10.2 Modd. 2504 ÷ 5004 4.11 Hydraulic connections • • • • • MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 35 Pre-charging (bar) Maximum expansion tank pressure (bar) Model 1602 1802 2002 2302 2502 2504 3004 3204 3504 4004 4504 5004 Capacity (I) Pre-charging (bar) Maximum expansion tank pressure (bar) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 36 Air to water chillers 4.15 Hydraulic components 4.15.1 Standard Versions Standard Versions User Circuit 4.15.2 A1ZZU - A2ZZU User Circuit 4.15.3 A1NTU - A2NTU User Circuit MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 37 Air to water chillers 4.16 Filling the hydraulic circuit 4.17 Emptying the installation MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 38 Air to water chillers FROST PROTECTION MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 39 PE section Model LS 2302 2502 2504 3004 3204 3504 4004 4504 5004 Power supply Control board Auxiliary circuit Fans power supply Line section PE section present in the units. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...

  • Page 40: Electric Connections

    Power supply Control board Auxiliary circuit Fans power supply Line section PE section present in the units. 4.20 Electric connections 4.20.1 Remote wiring connections USER CIRCUIT FLOW SWITCH (SFW1) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 41 Air to water chillers USER CIRCUIT WATER INLET SENSOR (BTI) USER CIRCUIT WATER PUMP REMOTE ON / OFF REMOTE GENERAL ALARM 90-91-92. USER CIRCUIT WATER OUTLET SENSOR (BTO) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 42 4.21 Refrigerant circuit layout SHP GHP Ø Ø Ø Ø Ø Ø A1 NT Ø A2 NT A0 NP Ø Ø A1 ZZ A2 ZZ A0NP A1NT A1ZZ A2NT A2ZZ MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...

  • Page 43: Unit Start Up

    Air to water chillers 5. UNIT START UP 5.1 Preliminary checks 5.1.1 Before start-up • • • • • • • • • • • • • MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 44 Air to water chillers 5.1.2 Safety device setting Device Set-point Differential Reset ----- 5.1.3 Controls during unit operation • • • 5.1.4 Refrigerant charge checking • • • • • MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 45 Top right zone Bottom right zone Icon Meaning Icon Meaning Celsius degrees Electric heaters activated User water pump Compressor 1 Compressor 2 External fan General Alarm 5.2.2 Key function MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 46 5.3 Remote control panel (Modd. 252 ÷ 2502) 5.3.1 Display icons Icon Meaning Icon Meaning Celsius degrees Electric heaters activated User water pump Compressor 1 Compressor 2 External fan General Alarm 5.3.2 Key function MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 47 Air to water chillers 5.3.3 Installation in the unit. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 48 Free cooling is active (not available). Indicates that an alarm is active. Domestic hot water (not available). Economy function Indicates that the defrost is active. Unloading function (not available). MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 49 Air to water chillers 5.5.2 Key function PROBES ALARM SERVICE CIRC Stand-by Stand-by 00:00 01/01/2014 Evaporator inlet temperature 12.0 °C Evaporator outlet temperature °C °C PROBES ALARM SERVICE CIRC. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 50 Rosso / Red Nero / Black Nero / Black Bianco / White Bianco / White Rosso / Red • • 5.6.1 Panel mounting connection diagram 5.6.2 Wall mounting connection diagram MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 51 Air to water chillers 6. USE (Modd. 252 ÷ 2502) 6.1 Switch the unit on (Modd. 252 ÷ 2502) Legend sion. 6.1.1 Cooling mode MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 52 6.2 Stop (Modd. 252 ÷ 2502) 6.2.1 Cooling mode 6.3 Stand-by (Modd. 252 ÷ 2502) When 6.4 How to change the set points (Modd. 252 ÷ 2502) SEtC Then press the MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 53 C2HR HouR PFHR PCHR 6.6 Acoustic signal silencing (Modd. 252 ÷ 2502) 6.7 Alarm reset (Modd. 252 ÷ 2502) Press the 6.8 Display alarm history (Modd. 252 ÷ 2502) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 54 Air to water chillers 7. USE (Modd. 2504 ÷ 5004) 7.1 Switch the unit on (Modd. 2504 ÷ 5004) Unit 7.1.1 Switch the unit on from the keyboard Cooling mode MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 55 SERVICE CIRC. 7.2 Stop (Modd. 2504 ÷ 5004) Unit ON: Cooling Unit ON: Cooling 00:00 01/01/2014 Evaporator inlet temperature 12.0 °C Evaporator outlet temperature °C PROBES ALARM SERVICE CIRC. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 56 °C Dynamic set Cooling 12.0 °C Evaporator outlet temperature °C Sanitary water PROBES ALARM SERVICE CIRC. ALARM EXIT press EXIT Press 7.3.1 Adjustable parameters Function Adjustment limit Default value MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 57 30.0 High pressure circuit 1 (pressostat) Evaporator outlet temperature °C 35.0 External air temp. (FC) °C San. water temperature 50.0 °C PROBES ALARM SERVICE CIRC. RST ALL RESET EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 58 PROBES ALARM SERVICE CIRC. Circuits status Circuits status Circuits status Circuits status Condenser fan Compressors status Unloading status Evaporating-condensing probe Evaporating pump status ALARM ENTER EXIT ALARM ENTER EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 59 N.C. 255 % Circuit Circuit 2 2 ALARM EXIT ALARM EXIT Condenser fan Condenser fan Cond. Cond. fan 1 fan 1 Cond. Cond. fan fan 2 2 ALARM EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 60 Air to water chillers 7.7 SERVICE key (Modd. 2504 ÷ 5004) ENTER EXIT ENTER EXIT Press the SERVICE Press ENTER Press the EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 61 1st level password (Pr1) ALARM EXIT 1st level password (Pr1) 1st level password (Pr1) Password OK! Press ENTER to continue ALARM ENTER EXIT Press ENTER Code Meaning Code Meaning Set point MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 62 Parameter group selection Parameter group selection St01 10.0 °C St02 °C St03 15.0 °C St04 40.0 °C Summer set point Summer set point ALARM ENTER EXIT ALARM EXIT Weather compensated function MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 63 Time band n°2 Tuesday Tuesday 00:00 00:00 00:00 00:00 Disabilitato Disabilitato Disabled Disabled Disabled Disabled Disabilitato Disabilitato Time band n°3 Time band n°3 Wednesday Wednesday ALARM EXIT ALARM EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 64 Evaporator water pump Sanitary water pump ALARM RESET EXIT 7.7.5 Circuit maintenance ENTER ENB/DIS Circuiti Circuiti Circuits Circuits Circuito 1 Circuit 1 enabled Circuito 2 Circuit 2 ALARM ENB/DIS EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 65 High pressure circuit 1 b1AC b1AC Antifreeze circuit 1 in summer mode ALARM RST ALL EXIT 7.7.8 Eletrical heater ENTER Heaters Heaters Liquid solenoid valves Liquid solenoid valves ALARM EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 66 Prop. Output AUX 1 110.0 °C Analog output 1 winter set point Analog output 1 winter set point -30.0 °C Output % Output % ALARM ENTER EXIT ALARM EXIT MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 67 Upload from device to HotKey ALARM ENTER EXIT 7.7.12 Control panel ENTER Control panel Control panel Contrast & backlight Languge selection System information ALARM ENTER EXIT 7.8 Acoustic signal silencing MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 68 Air to water chillers 8. MAINTENANCE OF THE UNIT 8.1 General warnings • • • 8.2 Drive access MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 69 Air to water chillers 8.3 Scheduled maintenance Search for leaks CASE Visual Inspection Pressure Test MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 70 8.4.1 Electrical system and adjustment Frequency Action to be performed As neces- 8.4.2 Condensing coils and fans Frequency Action to be performed As neces- present every three months or more MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 71 Air to water chillers 8.4.3 Compressors Frequency Action to be performed As neces- service. 8.5 Refrigerant circuit repair Therefore: • • • • • • MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 72 9. DECOMMISSIONING 9.1 Disconnect the unit • • • • • 9.2 Disposal, recovery and recycling 9.3 RAEE Directive (only UE) 10. DIAGNOSIS AND TROUBLESHOOTING (Modd. 252 ÷ 2502) MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 73 Air to water chillers Code Alarm Description Cause Solution user circuit. service. service. MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 74 Air to water chillers 11. DIAGNOSIS AND TROUBLESHOOTING (Modd. 2504 ÷ 5004) Code Alarm Description Cause Solution ACF1 ACF2 ACF3 ACF4 ACF5 ACF6 ACF7 ACF8 ACF9 AEFL AEUn sensor sensor AtE1 AtE2 MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 75 Air to water chillers Code Alarm Description Cause Solution Restore the correct user circuit B1 HP b1AC b1hP circuit 1 B1LP b1lP circuit 1 b1tF C1tr C2tr MTEC.3900.GB-E-1 Operation and maintenance manual LDA series English Rev. E 11-2021...
  • Page 76 HIDROS Srl...