HIdRos WZT Series Technical Manual
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HIdRos WZT Series Technical Manual

High efficiencyair to water split system heat pumps with e.v.i. compressors
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HIGH EFFICIENCYAIR TO WATER SPLIT SYSTEM HEAT PUMPS
WITH E.V.I. COMPRESSORS
WZT
SERIES
TECHNICAL MANUAL
Multiple instructions:
the instructions before
the unit
Rev. Rev. B 02-2020

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Summary of Contents for HIdRos WZT Series

  • Page 1 HIGH EFFICIENCYAIR TO WATER SPLIT SYSTEM HEAT PUMPS WITH E.V.I. COMPRESSORS SERIES TECHNICAL MANUAL Multiple instructions: the instructions before the unit Rev. Rev. B 02-2020...
  • Page 2 WZT P2U/P2S Declaration of conformity MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 3: Table Of Contents

    ..................................4. INSTALLATION ..................................................................................................................4.4 Inspection ..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 4 6.5 ALARM ..................................6.6 CIRC ................................................................................................... 7. UNIT MAINTENANCE .................................................................... 7.2 Access to the unit ........................................................................................................................8. DECOMMISSIONING ..................................................................................................................................................................................MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • 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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 6 WZT P2U/P2S 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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 7 WZT P2U/P2S 1.7 General Description of Symbols Used BANNED WARNING ACTION REQUIRED MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • 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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 9 Temperatura di progetto Design temperature Design temperature Peso a vuoto Weight Contiene gas fluorurati ad effetto serra disciplinati dal protocollo di Kyoto Contains fluorinated greenhouse gasses covered by the Kyoto protocol MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 10: Safety

    2.1 Warning re potentially hazardous toxic substances • • ENVIRONMENTAL PROTECTION : 2.1.3 Persistence and degradation 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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 11 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 2.6.3 Contact with eyes 2.6.4 Ingestion 2.6.5 Further medical treatment MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 12: Technical Characteristics

    WZT P2U/P2S 3. TECHNICAL CHARACTERISTICS 3.1 Unit description 3.1.1 Frame 3.1.2 Noise Reduction 3.1.3 Refrigerant circuit 3.1.4 Compressors 3.1.5 User heat exchangers MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 13: Other Versions

    WZT P2U/P2S 3.1.6 Electric enclosure 3.1.7 Microprocessors 3.1.8 Control and protection devices 3.2 Outdoor unit 3.2.1 Remote source heat exchanger 3.2.2 Fans 3.3 Other versions MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 14 3.4.1 Condensate discharge drip tray with antifreeze heater (BRCA) 3.4.2 Antifreeze heater (RAEV) This 3.4.3 RS485 serial interface card modbus protocol (INSE) 3.4.4 Electronic expansion valve (VTEE) 3.4.5 Electronic soft starter (DSSE) 3.4.6 Remote control panel (PCRL) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 15 WZT P2U/P2S 3.3.7 Cascade control system (SGRS) 3.5 What is the E.V.I. technology (enhanced vapour injection) m +i Pm+i MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 16 WZT P2U/P2S Water production at 40°C Water production at 40°C C.O.P. Water production at 55°C Water production at 55°C Ambient temperature (°C) Max Water Temperature (°C) Ambient temperature (°C) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 17 5148 7573 9228 10267 11951 13853 15095 17510 9000 9000 10000 16000 21000 21000 32000 32000 32000 2088 2088 2088 2088 2088 2088 2088 2088 2088 on the unit. MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 18 5148 7573 9228 10267 11951 13853 15095 17510 9000 9000 10000 16000 21000 21000 32000 32000 32000 2088 2088 2088 2088 2088 2088 2088 2088 2088 on the unit. MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 19 852-1202 252 - 302 452 - 502 2500 4500 6500 8500 10500 12500 14500 16500 3.7 Operation limits - 20 - 10 3.7.2 User hot water temperature (Winter operation) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 20 WZT P2U/P2S 3.7.3 Cold water temperature (RV versions Only) 3.7.4 Ambient air temperature MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 21 WZT P2U/P2S 3.8 Domestic hot water production 3.8.1 Solution 1 MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 22 This is the solution for existing buildings or for those applications where it is not possible to remove existing plants. possibility of using the existing DHW tank. COLD WATER in the tank. AS MUCH AS POSSIBLE MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 23 CCCP = Cooling capacity correction factor IPCF = Input power correction factor 3.10 Sound data INDOOR UNIT Octave bands (Hz) Mod. dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) 1002 1202 MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 24: Installation

    1002 1202 Lw: Sound power level according to ISO 9614. 4. INSTALLATION 4.1 General safety guidelines and and use of symbols MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 25: Inspection

    WZT P2U/P2S tion. 4.2 Health and safety Considerations 4.3 Personal protective equipment 4.4 Inspection MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 26 WZT P2U/P2S In Case of Damage 4.5 Storage 4.5.1 Shipment 4.6 Unpacking 4.7 Lifting and handling MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 27 2000 2000 2000 2000 2000 2000 2000 2000 1000 1000 1000 1000 3000 3000 3000 3000 3000 3000 3000 3000 3000 5000 5000 5000 5000 5000 5000 5000 5000 MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 28 WZT P2U/P2S 4.9 Installation of rubber vibration dampers (KAVG) sez A - A ØM ØD ØE Mod. WZT 252÷1202 4.10 Installation of rubber vibration dampers on outdoor unit (KAVG) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 29 WZT P2U/P2S 4.11 Serial interface card RS485 (INSE) Supervision TELEPHONE LINE 4.12 Installation of condensate drip tray (BRCA) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 30 WZT P2U/P2S 4.12.1 Installation of the heating cable MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 31 4.13.1 Indoor unit installed at a higher level than outdoor heat exchanger • • • 4.13.2 Indoor unit installed at a lower level than outdoor heat exchanger • • MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 32 Refrigerant charge [g/m] 4.13.5 Heating / Cooling capacity correction factor Refrigerant line 0 mt. Refrigerant line 10 mt. Refrigerant line20 mt. Refrigerant line 30 mt. 4.13.6 Additional oil charge Ø MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 33 Heating mode: Cooling mode: 4.15 Chemical characteristics of the water Total Hardness Electric conductibility Sulphur ion None Chlorine ions Ammonia ion None Sulphuric acid ions Silicon ion Total Iron MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 34 WZT P2U/P2S 4.16 Hydraulic components 4.14.1 P2S Versions P2U Versions User Circuit MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 35 The above values do not guarantee the availability and temperature of domestic hot water 4.19 Filling the hydraulic circuit • • • • • 4.20 Emptying the installation • • • MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 36 4.21 Typical installations 4.21.1 Combined heating / Cooling / Domestic hot water production – 2 pipe system The plant components supplied by the company are: STANDARD OPTIONS NOT AVAILABLE MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 37 WZT P2U/P2S 4.22 Electric connections: preliminary safety information FROST PROTECTION MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 38 Model 1002 1202 Power supply Control board Auxiliary circuit Fans power supply Line section PE section present in the units. 4.24 Electric connections 4.24.1 Power supply and electrical connections MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 39 WZT P2U/P2S 4.24.2 Remote wiring connections (compulsory) USER CIRCUIT WATER INLET SENSOR (BTI) USER CIRCUIT WATER PUMP DOMESTIC HOT WATER SENSOR (BTS) DOMESTIC HOT WATER CIRCUIT PUMP MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 40 REMOTE ON / OFF REMOTE SUMMER / WINTER CHANGE OVER REMOTE GENERAL ALARM 90-91-92. USER CIRCUIT ELECTRIC INTEGRATION HEATERS DOMESTIC HOT WATER ELECTRIC INTEGRATION HEATERS PRIORITY SELECTOR (Hot water) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 41 WZT P2U/P2S HEATING CABLE WEATHER COMPENSATED SENSOR (BTE) USER CIRCUIT WATER OUTLET SENSOR (BTO) DOMESTIC HOT WATER OUTLET SENSOR (BTU) USER CIRCUIT FLOW SWITCH (SFW1) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 42 Correct positioning of the BTI sensor Incorrect positioning of the BTI sensor 4.26 Positioning of the domestic hot water circuit sensor (BTS) Correct positioning of the BTS sensor Incorrect positioning of the BTS sensor MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 43 WZT P2U/P2S 4.27 Refrigerant circuit layout EVV-EVH P2U Version P2S Version MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 44: Unit Start Up

    WZT P2U/P2S 5. UNIT START UP 5.1 Preliminary checks 5.1.1 Before start-up • • • • • • • • • • • • • MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 45 WZT P2U/P2S 5.1.2 Device Set-point Differential Reset Device Set-point Differential Reset ----- °C ----- ----- °C ----- ----- °C ----- MANUAL °C 5.1.3 Controls during unit operation • • • MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 46 Indicates that the fans are working. Free cooling is active (not available). Indicates that an alarm is active. Domestic hot water. Economy function Indicates that the defrost is active. Unloading function (not available). MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 47 5.3 How to remote the control 5.3.2 Remote keyboard connection (VGI890) ENTER Rosso / Red Nero / Black Nero / Black Bianco / White Bianco / White Rosso / Red • • MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 48 WZT P2U/P2S 5.3.2 Panel mounting connection diagram 5.3.3 Wall mounting connection diagram 5.4.4 Selection built in display or remote keyboard ENTER ENTER Remoto MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 49: Use

    WZT P2U/P2S 6. USE 6.1 Switch the unit on Unit 6.1.1 Switch the unit on from the keyboard Cooling mode Heating mode Domestic hot water mode MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 50: Stop

    Unit ON: Heating 00:00 01/01/2014 Evaporator inlet temperature 28.4 °C Evaporator outlet temperature °C 27.0 External air temp. (FC) °C 31.8 San. water temperature N.C. PROBES ALARM SERVICE CIRC. MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 51 External air temp. (FC) °C San. water temperature 50.0 °C PROBES ALARM SERVICE CIRC. ALARM EXIT press EXIT Press 6.3.1 Adjustable parameters Function Adjustment limit Default value 35°C 50°C 23°C 10°C MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 52: Alarm

    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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 53: Circ

    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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 54 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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 55 WZT P2U/P2S 6.7 SERVICE key ENTER EXIT ENTER EXIT Press the SERVICE ENTER press MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 56 ALARM EXIT 1st level password (Pr1) 1st level password (Pr1) Password OK! Press ENTER to continue ALARM ENTER EXIT Press Press ENTER Code Meaning Code Meaning Set point Defrost MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 57 Parameter group selection Sd01 °C Sd02 10.0 °C Sd03 °C Sd04 20.0 °C Dynamic set point Dynamic set point ALARM ENTER EXIT ALARM EXIT Sd05 °C Sd06 -25.0 °C ALARM EXIT MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 58 WZT P2U/P2S Weather compensated function of 10°C. MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 59 ES20 ES05 0 24 ES21 ES06 0 24 ES22 ES07 ES23 ES08 ES24 ES09 ES25 ES10 ES26 ES11 ES27 ES12 ES28 ES13 ES29 ES14 ES30 ES15 ES31 ES16 ES32 MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 60 ES02 00:00 00:00 Time band n°2 Time band n°2 ES03 ES03 05:00 05:00 Time band n°3 Time band n°3 Energy Saving Energy Saving ALARM ENTER EXIT ALARM EXIT Hour MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 61 Disabled Time band n°2 Time band n°2 Tuesday Tuesday 00:00 00:00 08:00 08:00 Disabled Disabled Disabled Disabled Time band n°3 Time band n°3 Wednesday Wednesday ALARM EXIT ALARM EXIT MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 62 ALARM RESET EXIT 6.7.5 Circuit maintenance ENTER ENB/DIS Auxiliary output status Auxiliary output status Circuits Circuits External air temp.: San.water sec. t.: Circuit 1 Circuit 2 ALARM ENB/DIS EXIT MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 63 Circuit 1 Circuit 1 Circuit 1 Circuit 1 cycle not in progress cycle not in progress 45 : 0 Time to start (mm:ss) Circuit 2 Circuit 2 ALARM ENTER EXIT MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 64 Heaters Liquid solenoid valves Liquid solenoid valves ALARM EXIT 6.7.10 I/O Status (Input/Output) ENTER I/O Status I/O Status Analog input Analog output Digital input Digital output ALARM ENTER EXIT MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 65 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.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 66 Upload from device to HotKey ALARM ENTER EXIT 6.7.15 Control panel ENTER Control panel Control panel Contrast & backlight Languge selection System information ALARM ENTER EXIT 6.8 Acoustic signal silencing MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 67: Unit Maintenance

    WZT P2U/P2S 7. MAINTENANCE OF THE UNIT 7.1 General warnings • • • 7.2 Drive access MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 68 WZT P2U/P2S 7.3 Scheduled maintenance Search for leaks CASE Visual Inspection Pressure Test 7.4 Periodical checks and start-up MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 69 7.4.1 Electrical system and adjustment Frequency Action to be performed As neces- 7.4.2 Condensing coils and fans Frequency Action to be performed As neces- present every three months or more MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 70 WZT P2U/P2S 7.4.3 Compressors Frequency Action to be performed As neces- service. 7.4 Refrigerant circuit repair Therefore: • • • • • • MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...

  • Page 71: Decommissioning

    WZT P2U/P2S 8. DECOMMISSIONING 8.1 Disconnect the unit • • • • • 8.2 Disposal, recovery and recycling 8.3 RAEE Directive (only UE) MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 72 WZT P2U/P2S 9. DIAGNOSIS AND TROUBLESHOOTING Code Alarm Description Cause Solution ACF1 ACF2 ACF3 ACF4 ACF5 ACF6 ACF7 ACF8 ACF9 AEFL AEUn AHFL MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 73 Alarm Description Cause Solution sensor AP10 sensor sensor sensor. sensor sensor. AtE1 AtE2 Restore the correct user circuit B1 HP b1AC b1AH b1dF b1hP circuit 1 B1LP b1lP circuit 1 MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 74 WZT P2U/P2S b1tF C1tr C2tr MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 75 WZT P2U/P2S MTEC.5115.GB-B-1 Operation and maintenance manual WZT series English Rev. B 02-2020...
  • Page 76 HIDROS Srl...

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