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Refrigeration
excellence
since 1962
REFRIGERATION UNIT
Series Zero Direct-Drive
INSTALLATION MANUAL
TRANSLATION OF THE ORIGINAL
INSTRUCTIONS

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Summary of Contents for Zanotti Zero Series

  • Page 1 Refrigeration excellence since 1962 REFRIGERATION UNIT Series Zero Direct-Drive INSTALLATION MANUAL TRANSLATION OF THE ORIGINAL INSTRUCTIONS...
  • Page 2: Installation Manual

    It is forbidden to distribute and/or duplicate, in any form, this manual, even partially, without the written authorisation of ZANOTTI S.p.A. ZANOTTI S.p.A. reserves the right to change, without prior notice, the characteristics of the product described in this manual.
  • Page 3: Table Of Contents

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi GENERAL INFORMATION ............... 7 Introduction ....................... 7 Symbols ......................7 Manufacturer’s contact details ................8 Safety standards ....................8 Manufacturer’s responsibility ................8 Disposal of used materials ................8 Refrigeration unit identification ................
  • Page 4 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.5.1 Standard Evaporators ................. 32 2.1.5.2 Narrow Evaporators ................34 Weights ......................36 INSTALLATION ..................37 Tools required ....................37 Road compressor installation ................38 Unpacking the unit ...................
  • Page 5 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.13 External power supply mode connection socket installation ......60 3.14 Loading oil for putting the refrigerator circuit into service ........ 61 3.15 Loading the system ..................62 3.16 Suction pressure regulator valve (CPR) ............
  • Page 6: Z380 Multi

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi rev.01...
  • Page 7: General Information

    Z380 Multi 1 GENERAL INFORMATION 1.1 Introduction NOTE ZANOTTI S.p.A., the manufacturer of this refrigeration unit in question is referred to in the manual as Manufacturer. NOTE The company that purchased the refrigeration unit is referred to in the manual as Customer.
  • Page 8: Manufacturer's Contact Details

    Any request for intervention, from the Customer's service department, or for clarification regarding the technical aspects of this document, must be addressed to: Zanotti S.p.A. Via M. L. King, 30 46020 Pegognaga (MN) Italy Phone +39 0376 5551 E-mail: info@zanotti.com...
  • Page 9: Refrigeration Unit Identification

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 1.7 Refrigeration unit identification the model and serial number (or registration number) are shown on the metal plate attached to the side of the unit (Figure 1) and to the electrical panel (Figure 2). Figure 1 - Metal plate Figure 2 - Plate on the electrical panel Model identification...
  • Page 10: Plant Components

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 1.8 Plant components The refrigeration unit consists of the following parts (Figure 3): 1. Condenser unit, installed outside the isothermic crate. 2. Evaporative unit installed inside the isothermic crate. 3.
  • Page 11: Installation Mode

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 1.9 Installation Mode The Zero Direct-Drive refrigeration unit condenser unit can be installed "nose-mounted" (Figure 4), i.e. on the front wall of the cold room, or "roof-mounted" (Figure 5), i.e. on the upper wall of the cold room Figure 4- Nose installation Figure 5 - Roof installation rev.01...
  • Page 12: Technical Data

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2 TECHNICAL DATA 2.1 Dimensions and mounting measurements 2.1.1 Z200 2.1.1.1 Nose installation Dimensions in mm [in]. Figure 6 - Front view of the condenser unit Figure 7 - Rear view of the condenser unit rev.01...
  • Page 13 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 8 - Side view of the condenser unit + evaporator rev.01...
  • Page 14 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 9 - Upper view of the condenser unit + evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 15: Roof Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.1.2 Roof installation Dimensions in mm [in]. Figure 10 - Front view of the condenser unit Figure 11 - Side view of the condenser unit + evaporator rev.01...
  • Page 16 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 12 - View from the top of the condenser unit Figure 13 - Top View from the evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 17: Z250

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.2 Z250 2.1.2.1 Nose installation Dimensions in mm [in]. Figure 14 - Front view of the condenser unit Figure 15 - Rear view of the condenser unit rev.01...
  • Page 18 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 16 - Side view of the condenser unit + evaporator rev.01...
  • Page 19 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 17 - Upper view of the condenser unit + evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 20: Roof Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.2.2 Roof installation Dimensions in mm [in]. Figure 18 - Front view of the condenser unit Figure 19 - Side view of the condenser unit + evaporator rev.01...
  • Page 21 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 20 - View from the top of the condenser unit Figure 21 - Top View from the evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 22: Z350

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.3 Z350 2.1.3.1 Nose installation Dimensions in mm [in]. Figure 22 - Front view of the condenser unit Figure 23 - Rear view of the condenser unit rev.01...
  • Page 23 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 24 - Side view of the condenser unit + evaporator rev.01...
  • Page 24 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 25 - Upper view of the condenser unit + evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 25: Roof Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.3.2 Roof installation Dimensions in mm [in]. Figure 26 - Front view of the condenser unit Figure 27 - Side view of the condenser unit + evaporator rev.01...
  • Page 26 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 28 - View from the top of the condenser unit Figure 29 - Top View from the evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 27: Z380

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.4 Z380 2.1.4.1 Nose installation Dimensions in mm [in]. Figure 30 - Front view of the condenser unit Figure 31 - Rear view of the condenser unit rev.01...
  • Page 28 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 32 - Side view of the condenser unit + evaporator rev.01...
  • Page 29 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 33 - Upper view of the condenser unit + evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 30: Roof Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.4.2 Roof installation Dimensions in mm [in]. Figure 34 - Front view of the condenser unit Figure 35 - Side view of the condenser unit + evaporator rev.01...
  • Page 31 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 36 - View from the top of the condenser unit Figure 37 - Top View from the evaporator Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 32: Z380 Multi

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.5 Z380 Multi 2.1.5.1 Standard Evaporators NOTE For the dimensions of the condenser unit, refer to paragraph 2.1.4. Dimensions in mm [in]. Figure 38 - Side view of Standard evaporators rev.01...
  • Page 33 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 39 - Top View Standard evaporators Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 34: Narrow Evaporators

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.1.5.2 Narrow Evaporators NOTE For the dimensions of the condenser unit, refer to paragraph 2.1.4. Dimensions in mm [in]. Figure 40 - Side view of Standard evaporators rev.01...
  • Page 35 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 41 - Top View Standard evaporators Evaporator fastening screws: TE M8x120 (Q.ty 4). rev.01...
  • Page 36: Weights

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 2.2 Weights NOTE Depending on the configuration, the total weight of an installation corresponds to the sum of the weights of the condenser unit and the evaporator(s). Refrigerant Model Condenser unit...
  • Page 37: Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3 INSTALLATION 3.1 Tools required Before proceeding with the installation of the unit on the truck, it is necessary to check that you have the following tools available: Protective goggles and PPE •...
  • Page 38: Road Compressor Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.2 Road compressor installation NOTE The compressor, bracket and fixing kit are not supplied with the unit. NOTE Fill the compressor with oil before installation. Install the road compressor mounting kit as indicated in the supplier manual.
  • Page 39: Unpacking The Unit

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.3 Unpacking the unit To unpack the unit proceed as follows: Carefully remove the upper and side structures of the packaging crate, then remove the front panel •...
  • Page 40 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Remove the dividing box (3, Figure 44). • Figure 44 - Unpacking the condenser unit. Remove the screws that fix the unit (4) to the packaging crate. •...
  • Page 41: Removal And Mounting Of The Flaps Of The Condenser Unit

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.4 Removal and mounting of the flaps of the condenser unit CAUTION DO NOT remove the side frame from the front, as shown in Figure 45, to avoid damaging the unit.
  • Page 42: Assembly

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Remove the side frame. • Figure 48 - Removing the side frame 3.4.2 Assembly Following the removal procedure in reverse order, reassemble the side frame, making sure that the lower part of the side frame is correctly inserted in its guide (B, Figure 49).
  • Page 43: Lifting The Condenser Unit

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.5 Lifting the condenser unit To lift the condenser unit proceed as follows: Remove both side frames, as indicated in paragraph 3.4.1. • Remove the lid. •...
  • Page 44 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Attach a suitable lifting device to the four holes (3, Figure 51) of the frame and lift the unit. • Figure 51 - Lifting points CAUTION At the end of the installation, and however before remounting the unit lid, reposition the gaskets (1,Figure 50) and (2).
  • Page 45: Condenser Unit Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.6 Condenser unit installation NOTE The right side of the condenser unit is equipped with a removable door (1, Figure 52) for the passage of cables and pipes. Figure 52 - Right side door of condenser unit 3.6.1 Nose installation To install the condenser unit proceed as follows:...
  • Page 46: Roof Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Prepare an external channel (3, Figure 54) for passage of the Road compressor pipes. • Figure 54 - External channel 3.6.2 Roof installation To install the condenser unit proceed as follows: Prepare the installation and passage holes for the pipes and electrical cables, following the model •...
  • Page 47: Evaporator Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Pass the pipes and the electrical connection cables to the evaporator through the hole on the • roof. • Fix the unit with the screws provided. 3.7 Evaporator installation DANGER The evaporator contains nitrogen under pressure.
  • Page 48: Piping Connection

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.8 Piping connection On the condenser unit and on the evaporators, in correspondence with the fittings of the lines, there are adhesives that bear the same letters and numbers as indicated in the connection diagrams (Figure 56 and Figure 57).
  • Page 49: Connection Diagram - Single Temperature Versions

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.8.1 Connection diagram - single temperature versions Figure 56 - Connection diagram - single temperature Road compressor suction line Defrosting line Ø 10 mm [0.39 in] Ø...
  • Page 50: Connection Diagram - Standard Multi Temperature Versions

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.8.2 Connection diagram - Standard multi temperature versions Figure 57 - Connection diagram - Multi temperature Defrosting line Ø 10 mm [0.39 in] Condenser unit Suction line Ø...
  • Page 51: Installation Of Charge Junction/Gauge Connection Of Road Compressor

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.8.3 Installation of charge junction/gauge connection of road compressor Figure 58 - road compressor installation Suction line junction (S) Supply line junction (D) Road compressor suction line...
  • Page 52: Vacuum Pump Connection

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.8.4 Vacuum pump connection The manifolds of the vacuum pump can be connected to the fittings installed on the suction sockets (1, Figure 58) and exhaust (2) of the vehicle compressor or, alternatively, to the low pressure outlet (1, Figure 59) of the service and the high pressure outlet (2, Figure 60) on the liquid receiver shut off valve.
  • Page 53: Check For System Leaks And Vacuum

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.9 Check for system leaks and vacuum The vacuum is created by closing the shut-off valves of the unit and connecting the pressure gauge •...
  • Page 54: Electrical Connections

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.10 Electrical connections NOTE The Figure 62 shows an example of a standard wiring diagram. Please refer to the specific wiring diagram of the version you are installing before proceeding with the connections.
  • Page 55 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi Figure 62 - Electrical connections rev.01...
  • Page 56: Sub-Key Fuse Installation Kit

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.10.1 Sub-key fuse installation kit The sub-key fuse installation kit is supplied separately and consists of the following components: Fuse base • Blade fuse, 5A •...
  • Page 57: Discharge Heater Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.10.2 Discharge heater installation In order to prevent the formation of ice inside the condensate drain hoses, it is possible to install a defrost resistance, if supplied.
  • Page 58: Condenser Drain Hoses Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.11 Condenser drain hoses installation CAUTION Connect the drain hoses only by means of "T" or "Y" junctions. NOTE For proper drainage, the drain hose must slope down from the remote evaporators to the wall drains with no kinks or droop.
  • Page 59: In-Cab Controller Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.12 In-cab controller installation Figure 66 - Installation of the support Figure 67– Connector connection rev.01...
  • Page 60: External Power Supply Mode Connection Socket Installation

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.13 External power supply mode connection socket installation DANGER Do not connect the cable to the power supply during installation. To install the External power supply plug, proceed as follows: Using the screws provided, fix the socket (3, Figure 68) to the external wall of the cold room •...
  • Page 61: Loading Oil For Putting The Refrigerator Circuit Into Service

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.14 Loading oil for putting the refrigerator circuit into service Adding oil to the system according to the instructions below will result in the SOQ (System Oil Quantity), which is the correct amount of oil in the system.
  • Page 62: Loading The System

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.15 Loading the system Connect the refrigerant bottle to the gauge manifold and place it on a scale. • Connect the refrigerant bottle valve and drain the pressure gauge fitting line. •...
  • Page 63: Suction Pressure Regulator Valve (Cpr)

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.16 Suction pressure regulator valve (CPR) The Suction pressure regulator valve (CPR) is a protection device, which avoids compressor overload and liquid return, limiting maximum suction pressure. It is useful at the end and during defrost or heating operations, under certain conditions, and at start with equilibrated circuit (e.g.
  • Page 64: Adjusting The Cpr Valve

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.16.1 Adjusting the CPR valve To regulate the CPR valve, operate as follows: Turn on the unit in road mode. • Connect low pressure gauge to suction line by LP service port. •...
  • Page 65: Expansion Valve

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.17 Expansion valve The thermostatic expansion valve regulates the injection of refrigerant into the evaporators. 3.17.1 Expansion valve adjustment. To regulate the expansion valve, operate as follows: Connect a pressure gauge to the evaporator output line •...
  • Page 66 Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi The standard overheating values are as follows: These values may vary depending on the application and model of the unit. Cold room Overheating temperature 0°C (32°F) 8K (14°F) - 20°C (- 4°F)
  • Page 67: Liquid Injection Valve Kit (Optional)

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.18 Liquid injection valve kit (optional) 3.18.1 Operating logic In order to reduce the exhaust temperature of the Road compressor, the liquid injection valve injects liquid into the suction line.
  • Page 68: Injection Thermostat

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.18.4 Injection thermostat Install the FTI injection thermostat (3, Figure 74) on the compressed air supply line (2) and fix it with the appropriate clamp (1). Figure 74 - Injection thermostat rev.01...
  • Page 69: Cooling Diagram With Liquid Injection Valve Kit Installed

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.18.5 Cooling diagram with liquid injection valve kit installed Figure 75 - Cooling diagram with liquid injection valve kit rev.01...
  • Page 70: Wiring Diagram With Liquid Injection Valve Kit Installed

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.18.6 Wiring diagram with liquid injection valve kit installed Figure 76 - Wiring diagram with liquid injection valve kit rev.01...
  • Page 71: Single Temperature Heating Kit (Optional)

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.19 Single temperature heating kit (optional) 3.19.1 Operating logic This option allows the unit to have two functions: a) Cooling mode: inject liquid into the suction line to reduce the temperature of the compressor exhaust gas.
  • Page 72: Wiring Diagram With The Heating Kit Installed

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.19.4 Wiring diagram with the heating kit installed Figure 78 - Wiring diagram with heating kit rev.01...
  • Page 73: Cooling Diagram With Installed Heating Kit

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.19.5 Cooling diagram with installed heating kit Figure 79 - Cooling diagram with heating kit rev.01...
  • Page 74: Silencer Kit (Optional)

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.20 Silencer kit (optional) For insulated vehicles, if excessive noise and abnormal vibrations are generated by pulsations in the road compressor supply pipe, a silencer is required on the compressor supply line. Figure 80 - Silencer kit Silencer Gasket...
  • Page 75: Final Checks

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 3.21 Final checks All mounting holes and access holes should be sealed with silicone or foam. Check with a sheet of paper that the fans blow in the right direction. The drain hoses should be slanted on all evaporators.
  • Page 76: Appendix

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 4 APPENDIX 4.1 Cooling diagram - single temperature version Figure 81 - Cooling diagram (single temperature version) Liquid spyglass Condenser Pressure regulator valve Liquid receiver Oil separator Dehydrating filter Low pressure service socket...
  • Page 77: Cooling Diagram - Multi Temperature Version

    Refrigeration unit Series Zero Direct-Drive INSTALLATION MANUAL Z200 | Z250 | Z350 | Z380 Z380 Multi 4.2 Cooling diagram - multi temperature version Figure 82 - Cooling diagram (multi temperature version) Liquid spyglass Dehydrating filter Pressure regulator valve Low pressure switch Oil separator Stand-by Compressor Low pressure service socket...
  • Page 78 Zanotti S.p.A. M. L. King, 30 46020 Pegognaga (MN) Italy Tax Code/VAT No. 0185670203 T. +39 0376 5551 F. +39 0376 536554 info@zanotti.com www.zanotti.com...

This manual is also suitable for:

Z200Z250Z350Z380 z380 multi

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