Page 1
Refrigeration excellence since 1962 REFRIGERATION UNIT Series Uno Undermount INSTALLATION MANUAL TRANSLATION OF THE ORIGINAL INSTRUCTIONS...
Page 2
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.
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi GENERAL INFORMATION ............... 6 Introduction ....................... 6 Symbols ......................6 Manufacturer’s contact details ................7 Safety standards ....................7 Manufacturer’s responsibility ................7 Disposal of used materials ................7 Plant components .....................
Page 4
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.3.1.5 In-cab controller .................. 23 Unpacking the unit ................... 24 Installation of the unit ..................25 3.5.1 Mounting brackets ................26 Evaporator installation ..................28 3.6.1 Positioning the evaporators ..............29 Evaporator connection ..................
Page 5
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 4.3.3 Emergency circuit ................. 50 4.3.4 Key ....................... 51 Wiring diagram - multi temperature version ............. 53 4.4.1 Power board ..................54 4.4.2 Multi temperature board ............... 55 4.4.3 Electronic board ...................
UN120 | UN120 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.
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...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 1.7 Plant components Figure 1 - Refrigeration unit Uno Undermount In-cab controller Condenser unit Evaporator rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 2 TECHNICAL DATA 2.1 Dimensions 2.1.1 Condenser unit NOTE The condenser unit is equipped with brackets for installation. Dimensions in mm [in]. Figure 2 - View 3/4 Figure 3- Front view rev.02...
Page 10
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Dimensions in mm [in]. Figure 4- Rear view Figure 5 - Top View rev.02...
Page 11
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Dimensions in mm [in]. Figure 6 - View of cab side Figure 7 - Engine side view rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 2.1.2 Evaporators 2.1.2.1 Flat two-fan evaporator Dimensions in mm [in]. Figure 8- Rear view Defrosting Ø12 mm [0.47 in] Suction Ø 22 mm [0.87 in] Liquid Ø 10 mm [0.39 in] Figure 9 - Top View rev.02...
Page 13
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Dimensions in mm [in]. Figure 10- Side view Figure 11 - View 3/4 rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 2.1.2.2 Flat three-fan evaporator Dimensions in mm [in]. Figure 12- Rear view Defrosting Ø12 mm [0.47 in] Suction Ø 28 mm [1.10 in] Liquid Ø 10 mm [0.39 in] Figure 13 - Top View rev.02...
Page 15
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Dimensions in mm [in]. Figure 14- Side view Figure 15 - View 3/4 rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 2.1.2.3 Three-fan cubic Evaporator Dimensions in mm [in]. Figure 16- Rear view Figure 17 - Top View rev.02...
Page 17
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Dimensions in mm [in]. Figure 18- Side view Figure 19 - View 3/4 rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 2.2 Weights UN120 UN120 MULTI Road mode / External 1124 1124 power supply mode Road mode only 1047 1047 Evaporators 40 x 2 88 x 2 rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3 INSTALLATION 3.1 Installation layout Figure 20 - Installation layout - Left side In-cab controller Defrosting line Evaporator connection cable Liquid line Evaporator Suction line In-cab controller connection cable Condenser unit rev.02...
Page 20
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Figure 21 - Installation layout - Right side In-cab controller Card guard fuse (F20) Evaporator connection cable KB battery relay Evaporator Diesel fuel tank In-cab controller connection cable Diesel fuel pump Fuel pick-up pipe Battery positive cable Diesel fuel pump pick-up rubber pipe Ø...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.2 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 ...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.4 Unpacking the unit To unpack the unit proceed as follows: Carefully remove the upper and side structures of the packaging crate, then remove the lower panel and the installation kit components supplied with the unit. ...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.5 Installation of the unit To install the unit proceed as follows: With an 8 mm Allen wrench, open the front panel fixtures (Figure 23). Slide the front panel leftward to remove it Figure 23 ...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.5.1 Mounting brackets Dimensions in mm [in]. Figure 25- Supports - Rear view rev.02...
Page 27
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Dimensions in mm [in]. Figure 26 - Supports - Top View rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.6 Evaporator installation DANGER Evaporators contain nitrogen under pressure. Before installation, release the nitrogen as described in this paragraph. To install the evaporator proceed as follows: Slowly unscrew the caps on the defrost lines (1,Figure 27), liquid (2) and suction (3) to allow the nitrogen to gradually escape.
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.6.1 Positioning the evaporators Figure 28 - Positioning the evaporators rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.7 Evaporator connection NOTE Use copper pipes. Flanges and O-rings are supplied with the refrigeration unit. NOTE It is recommended the use of bulk rolled refrigeration pipes and pipe benders to reduce fittings and solder joints where applicable.
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.7.1 Condenser unit connection Figure 29 - Condenser unit connections Liquid Ø10 mm [0.39 in] Defrosting Ø 12 mm [0.47 in] Suction Ø 28 mm [1.10 in] Connections to weld rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.7.2 5 fans evaporator single temperature version connection Figure 30 - Connecting the 5 fans evaporator Liquid Ø10 mm [0.39 in] Defrosting Ø 12 mm [0.47 in] Suction Ø 28 mm [1.10 in] rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.7.3 6 fans evaporator single temperature version connection Figure 31 - Connecting the 6 fans evaporator Liquid Ø10 mm [0.39 in] Defrosting Ø 12 mm [0.47 in] Suction Ø 28 mm [1.10 in] rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.7.4 2 units 3 fans evaporator single temperature version connection Figure 32 - Multi temperature version connection with two three-fan evaporators Liquid Ø10 mm [0.39 in] Defrosting Ø 12 mm [0.47 in] Suction Ø...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.8 Drain hoses installation NOTE For proper drainage, the drain hose must slope down continuously from the evaporators to the wall drains with no kinks or droop. NOTE It is recommended routing each individual drain hose directly out of the cold storage to allow faster water drainage.
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.9 In-cab controller installation Figure 35 - Installation of the support Figure 36– Connector connection rev.02...
Page 38
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Figure 37 - IP67 Remote Control (On Demand) rev.02...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.10 Diesel fuel pump installation To install the diesel fuel pump, proceed as follows: Apply hydrocarbon-resistant sealant to points (A, Figure 38) of the fittings. Install the diesel fuel pump complete with supply (B) and suction (C) fittings using the support (D). Figure 38 - Diesel fuel pump installation rev.02...
Page 40
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Figure 39 - Diesel fuel pump installation layout Diesel fuel pump pipe Ø 8 mm [5/16"] Fuel pick-up pipe Fuse Fuel pick-up pipe filter Card connection cable guard fuse Diesel fuel tank Diesel fuel pump Fuel pick-up supply pipe Ø...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.11 Installing the battery 3.11.1 Installing the battery compartment BATTERY (NOT INCLUDED IN THE KIT Figure 40 - Installing the battery compartment HH screw 6x16 Battery locking bracket Flat washer 6x12 Battery holder box with relay brackets HH screw 10x40 Battery holder cover...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.11.2 Battery connections and KB relay Figure 41 - Battery connections and KB relay Battery Power cable from the main fuse Maximum system guard fuse (200 A) To the positive pole of the unit Display guard fuse (10 A) To the cable No.50 of the unit KB Relay...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.12 Check for system leaks and vacuum The vacuum is created by closing the shut-off valves of the unit and connecting the pressure gauge manifold to the copper lines. ...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 3.13 Final checks Before delivering the truck to the customer, it is necessary to carry out the following checks: Correct fixing of all the mechanical units No air gaps between the unit and truck wall Correct connection of the drain hoses Correct installation of the diesel fuel pump Correct connection of the diesel fuel pipes and the tightening...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 4 APPENDIX 4.1 Cooling diagram - single temperature version Figure 42 - Cooling diagram (single temperature version) Defrosting line Dehydrating filter Suction line Liquid receiver Liquid line Condenser Three-ways valve Suction valve High pressure switch Discharge valve...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 4.2 Cooling diagram - multi temperature version Figure 43 - Cooling diagram (multi temperature version) Defrosting line Liquid receiver Suction line Condenser Liquid line Suction valve Three-ways valve Discharge valve High pressure switch Stand-by compressor Condenser fan pressure switch...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 4.3.4 Key Code Description ALTERNATOR BA-BA2 COLD ROOM SENSOR RADIATOR SENSOR EVAPORATOR AIR OUTLET PROBE GLOW PLUGS RESISTANCE OF ALTERNATIVE EXCITATION IN EMERGENCY ELECTRONIC POWER UNIT BOARD PROTECTION FUSE F3/B FUSE SOL.
Page 52
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Code Description KF1-2 COOLING CYCLE RELAY DIESEL FUEL PUMP RELAY BOARD CONDENSER FAN RELAY AUXILIARY RELAY PARTIALISATION RELAY KPR1 PREHEATING RELAY POWER SUPPLY RELAY PHASE SEQUENCER KYAV HIGH SPEED SOLENOID VALVE RELAY DEFROST SOLENOID VALVE RELAY MECHANICAL HOUR COUNTER ELECTRIC MOTOR...
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi 4.4.5 Key Code Description ALTERNATOR BA-BA2 COLD ROOM SENSOR RADIATOR SENSOR GLOW PLUGS DIESEL FUEL HEATER ELECTRONIC POWER UNIT BOARD PROTECTION FUSE F3/B FUSE SOL. COLD EVAP. SUPPLEMENTARY MULTI TEMPERATURE BOARD FUSE F4/B FUSE SOL.
Page 59
Refrigeration unit Series Uno Undermount INSTALLATION MANUAL UN120 | UN120 Multi Code Description MECHANICAL HOUR COUNTER ELECTRIC MOTOR M8-9-10 MVE1-2-3 EVAPORATOR FANS MOTOR DOOR MICROSWITCH START MOTOR LOW PRESSURE SWITCH HIGH PRESSURE SWITCH DIESEL FUEL PUMP OIL PRESSURE SWITCH REMOTE ON/OFF AIR SWITCH THREE-WAY SOLENOID VALVE HIGH SPEED SOLENOID VALVE...
Page 60
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...