Zanotti UNO Series User manual

Refrigeration excellence since 1962
REFRIGERATION UNIT Series Uno Undermount
INSTALLATION MANUAL
TRANSLATION OF THE ORIGINAL
INSTRUCTIONS

INSTALLATION MANUAL
Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
2
rev.02
REVISION
The information contained in this manual is the property of ZANOTTI S.p.A.
The drawings and other documents accompanying the refrigeration unit are the property of ZANOTTI
S.p.A.
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.
In case of doubt or difficulty in understanding or interpreting the manual, the original/official version
indicated as "ORIGINAL INSTRUCTIONS" on the cover, must be considered as the valid version.
The contents of this manual have been carefully checked to ensure they correspond to the system in
question.
However, as possible differences cannot be excluded, the contents of this document are periodically
checked and any corrections or modifications will be included in the next edition.
Some of the images included in this manual should only be considered as an example, as they may not
refer to the refrigeration unit described here.
DATE REVISION DESCRIPTION
12/2021 01 First version
03/2022 02 Revision chapter 3.7: 5 and 6 fans single-temperature
evaporators added.

Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
INSTALLATION MANUAL
rev.02
3
1 GENERAL INFORMATION ....................................................................... 6
1.1 Introduction ....................................................................................................... 6
1.2 Symbols ............................................................................................................ 6
1.3 Manufacturer’s contact details ........................................................................... 7
1.4 Safety standards ............................................................................................... 7
1.5 Manufacturer’s responsibility ............................................................................. 7
1.6 Disposal of used materials ................................................................................ 7
1.7 Plant components ............................................................................................. 8
2 TECHNICAL DATA ................................................................................... 9
2.1 Dimensions ....................................................................................................... 9
2.1.1 Condenser unit ....................................................................................... 9
2.1.2 Evaporators .......................................................................................... 12
2.1.2.1 Flat two-fan evaporator ....................................................................... 12
2.1.2.2 Flat three-fan evaporator .................................................................... 14
2.1.2.3 Three-fan cubic Evaporator ................................................................. 16
2.2 Weights ........................................................................................................... 18
3 INSTALLATION ...................................................................................... 19
3.1 Installation layout ............................................................................................ 19
3.2 Tools required ................................................................................................. 21
3.3 Installation components ................................................................................... 22
3.3.1 Installation kit ....................................................................................... 22
3.3.1.1 Diesel fuel pump kit............................................................................. 22
3.3.1.2 Electrical connection kit ...................................................................... 23
3.3.1.3 Battery holder kit ................................................................................. 23
3.3.1.4 Muffler kit ............................................................................................ 23

INSTALLATION MANUAL
Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
4
rev.02
3.3.1.5 In-cab controller .................................................................................. 23
3.4 Unpacking the unit ........................................................................................... 24
3.5 Installation of the unit ....................................................................................... 25
3.5.1 Mounting brackets ................................................................................ 26
3.6 Evaporator installation ..................................................................................... 28
3.6.1 Positioning the evaporators .................................................................. 29
3.7 Evaporator connection ..................................................................................... 30
3.7.1 Condenser unit connection ................................................................... 31
3.7.2 5 fans evaporator single temperature version connection .................... 32
3.7.3 6 fans evaporator single temperature version connection .................... 33
3.7.4 2 units 3 fans evaporator single temperature version connection ......... 34
3.7.5 Cubic evaporator connection ................................................................ 35
3.8 Drain hoses installation ................................................................................... 36
3.9 In-cab controller installation ............................................................................. 37
3.10 Diesel fuel pump installation ............................................................................ 39
3.11 Installing the battery ........................................................................................ 41
3.11.1 Installing the battery compartment ........................................................ 41
3.11.2 Battery connections and KB relay ......................................................... 42
3.12 Check for system leaks and vacuum ............................................................... 43
3.13 Final checks..................................................................................................... 44
4 Appendix ................................................................................................ 45
4.1 Cooling diagram - single temperature version ................................................. 45
4.2 Cooling diagram - multi temperature version ................................................... 46
4.3 Wiring diagram - single temperature version ................................................... 47
4.3.1 Power board ......................................................................................... 48
4.3.2 Electronic board .................................................................................... 49

Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
INSTALLATION MANUAL
rev.02
5
4.3.3 Emergency circuit ................................................................................. 50
4.3.4 Key ....................................................................................................... 51
4.4 Wiring diagram - multi temperature version ..................................................... 53
4.4.1 Power board ......................................................................................... 54
4.4.2 Multi temperature board ....................................................................... 55
4.4.3 Electronic board ................................................................................... 56
4.4.4 Second evaporator control circuit ......................................................... 57
4.4.5 Key ....................................................................................................... 58

INSTALLATION MANUAL
Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
6
rev.02
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.
This manual contains all the information necessary for correct installation and maintenance of the unit.
1.2 Symbols
The manual uses some symbols which are used to draw the reader’s attention and highlight some
particularly important aspects.
SYMBOL MEANING NOTES
DANGER It indicates a risk of injury to the user. Pay close
attention to the text blocks indicated by this symbol.
CAUTION It is a warning of possible deterioration or damage
to the refrigeration unit. Pay attention to the text
blocks indicated by this symbol.
WARNING
NOTE
It indicates a warning or a note on key functions or
useful information. Pay attention to the text blocks
indicated by this symbol.

Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
INSTALLATION MANUAL
rev.02
7
1.3 Manufacturer’s contact details
For any type of information or clarification regarding use, etc., the Manufacturer’s Technical Office is
always at the disposal of the Customer’s requests.
The latter should ask questions in clear terms, with references to this manual, always indicating the data
on the identification plate of the refrigeration unit in question.
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 [phone]
E-mail: [email protected]m
1.4 Safety standards
The instructions, indications, standards and related safety notes described in this manual are intended to
define a series of behaviours and obligations to be observed while performing the various installation
activities envisaged on the unit. This is to ensure personnel, equipment, and the environment remain safe.
1.5 Manufacturer’s responsibility
The Manufacturer will not be held responsible for incorrect installation of the unit or for damage caused
by the use of non-authorised components as well as the tampering with circuits, components, and system
software.
It is the manufacturer's responsibility to ensure that the operators (authorised to perform the required
activity) are qualified, adhere to, and are aware of all the requirements of this document as well as the
general safety standards applicable to the unit.
Failure to observe the safety standards can cause injury to personnel and damage to the equipment.
1.6 Disposal of used materials
Packages made of wood, plastic and polystyrene must be disposed of in accordance with the laws in force
in the country where the equipment is used.
Contact your local authority for information on disposal and recycling.

INSTALLATION MANUAL
Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
8
rev.02
1.7 Plant components
Figure 1 - Refrigeration unit Uno Undermount
1 In-cab controller 3 Condenser unit
2 Evaporator

Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
INSTALLATION MANUAL
rev.02
9
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

INSTALLATION MANUAL
Refrigeration unit
Series Uno Undermount
UN120 | UN120 Multi
10
rev.02
Dimensions in mm [in].
Figure 4- Rear view
Figure 5 - Top View