Rossato AIR COMBO EVO Instruction Manual

AIR COMBO EVO
MANUAL OF USE, INSTALLATION AND MAINTENANCE

MIUM – AIR COMBO EVO – Rev. 1.2 Pag. 1
M0SE00001-05 – 05/2023 Data: 15/05/2023
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These instructions are intended for both the installer and the end user.
Failure to observe the instructions in this manual will result in the guarantee being invalidated.
These instructions contain essential and important information for a safe and perfect installation and are an integral and essential part of the product.
The entire technical documentation is therefore subject to custody and must always accompany the product. All data and instructions in this manual
refer to the current level of technology.
Please always consult the instructions in this manual when installing.
The activities described in these instructions require specialist knowledge and training in the field of system installation.
Consequently, the described installation work should only be carried out if the technical requirements indicated are met. The diagrams used are purely
indicative and make no claim to completeness and are not intended to replace the design. Although this manual has been produced with the utmost
care, errors and updates are possible; Rossato S.p.A. shall not be held responsible for inaccuracies or omissions.
The contents, images, text, layout of this document are the property of Rossato S.p.A. and may not be reproduced in whole or in part without written
permission.

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TABLE OF CONTENT
1) INTRODUCTION ...................................................................................................................................... 8
1.1 Generalities ................................................................................................................................................................. 8
1.2 General information and precautions on using the machine ....................................................................................... 8
1.3 Responsabilities .......................................................................................................................................................... 9
1.4 Symbology and terminology used in the manual ........................................................................................................ 9
2) PRESENTATION .................................................................................................................................... 10
2.1 Intended use .............................................................................................................................................................. 10
2.2 Serial number label .................................................................................................................................................. 10
2.3 Features ..................................................................................................................................................................... 11
2.4 Regulatory references ............................................................................................................................................... 11
2.5 Standards for service and proper functioning ........................................................................................................... 11
3) HAZARDS AND PROTECTIONS .......................................................................................................... 13
3.1 Prohibited uses and contraindications ....................................................................................................................... 13
3.2 Safety protections ..................................................................................................................................................... 13
3.2.1 Personal protective equipment ............................................................................................................................... 13
3.3 Fire extinguisher and first aid ................................................................................................................................... 14
4) HANDLING OF THE MACHINE ........................................................................................................... 15
4.1 Handling .................................................................................................................................................................... 15
4.2 Lifting ....................................................................................................................................................................... 15
4.3 Packaging removal .................................................................................................................................................... 15
4.4 Lifting and transporting ............................................................................................................................................ 16
4.5 Handle for handling .................................................................................................................................................. 16
4.6 Inspection .................................................................................................................................................................. 17
5) MAIN COMPONENTS ........................................................................................................................... 18
6) INSTALLATION ..................................................................................................................................... 30
6.1 Lighting .................................................................................................................................................................. 31
6.2 Functional spaces – installation in a closed space .................................................................................................. 31
6.3 Electrical socket ..................................................................................................................................................... 32
6.4 Condensate drain .................................................................................................................................................... 32
7) HYDRAULIC CONNECTIONS .............................................................................................................. 33
7.1 Hydraulic connections ............................................................................................................................................ 34
7.2 Pipe connections .................................................................................................................................................... 35

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8) AERAULIC CONNECTIONS ................................................................................................................. 37
8.1 Possible installations .............................................................................................................................................. 37
8.2 Ducted intake and exhaust (recommended) ........................................................................................................... 37
8.3 Ducted (conditioned) suction ................................................................................................................................. 37
8.4 Ducted (conditioned) expulsion ............................................................................................................................. 38
8.5 Aeraulic design criteria .......................................................................................................................................... 38
8.6 Connections ............................................................................................................................................................ 39
8.7 Anti-intrusion grid for small animals by the customer .......................................................................................... 41
8.8 Water features ........................................................................................................................................................... 42
9) ELECTRICAL CONNECTIONS ............................................................................................................. 43
9.1 Gestione SMART GRID – Fotovoltaico ................................................................................................................ 44
9.2 Wiring diagram– AIR COMBO EVO 200 ............................................................................................................. 45
9.2.1 Components and wiring diagram description – AIR COMBO EVO 200 .............................................................. 46
9.3 Wiring diagram– AIR COMBO EVO 300 ............................................................................................................. 47
9.3.1 Components and wiring diagram description – AIR COMBO EVO 300 .............................................................. 48
10) MESSA IN FUNZIONE ........................................................................................................................ 49
10.1 Preliminary checks ................................................................................................................................................ 50
10.2 Checks after installation ......................................................................................................................................... 51
10.3 Installation site ...................................................................................................................................................... 51
10.4 Refrigeration circuit .............................................................................................................................................. 51
10.5 Hydraulic circuit .................................................................................................................................................... 51
10.6 Aeraulic circuit ..................................................................................................................................................... 52
10.7 Electrical circuit .................................................................................................................................................... 52
10.8 Voltage verification - absorption ........................................................................................................................... 53
10.9 Power socket ......................................................................................................................................................... 53
10.10 Test run - water filling before start-up ................................................................................................................ 53
11) INFORMATION ON OPERATION ....................................................................................................... 54
12) DEFROSTING DURING WATER HEATING .................................................................................... 55
13) TCO and ATCO ..................................................................................................................................... 55
14) BASIC FUNCTIONS ............................................................................................................................................. 56
14.1 Holiday mode ......................................................................................................................................................... 56
14.2 Weekly anti-legionella function ............................................................................................................................. 56
14.3 Electrical resistance ................................................................................................................................................ 56

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14.4 Start-up report ........................................................................................................................................................ 57
15) MAINTENANCE ................................................................................................................................................... 58
15.1 Recommended Periodic Checks Sheet ................................................................................................................... 58
15.2 Recommended Periodic Checks Sheet ................................................................................................................... 58
15.3 Set-aside ................................................................................................................................................................. 58
15.4 Power supply .......................................................................................................................................................... 59
15.5 Electronic anode ..................................................................................................................................................... 59
15.6 Filter cleaning ......................................................................................................................................................... 59
15.7 Condensate drain .................................................................................................................................................... 60
15.8 Storage tank ............................................................................................................................................................ 61
15.9 Tank emptying ........................................................................................................................................................ 61
15.10 Replacement or verification of resistance ........................................................................................................... 62
15.11 Battery ................................................................................................................................................................. 63
15.12 Safety valve ......................................................................................................................................................... 63
15.13 Expansion valve ................................................................................................................................................... 64
15.14 Structure ..................................................................................................................................................64
15.15 Start-up after a long period of inactivity ............................................................................................................. 64
16) RESIDUAL RISK .................................................................................................................................................. 65
16.1 Generalities ............................................................................................................................................................. 65
16.2 Danger zone ............................................................................................................................................................ 65
16.3 Handling ................................................................................................................................................................. 65
16.4 Installation ............................................................................................................................................................. 66
16.5 Generic risks .......................................................................................................................................................... 66
16.6 Electrical part ......................................................................................................................................................... 66
16.7 Moving organs ........................................................................................................................................................ 67
16.8 Refrigerant .............................................................................................................................................................. 67
16.9 Hydraulic part ......................................................................................................................................................... 67
16.10 Disconnection ...................................................................................................................................................... 67
17) DISMISSION - EC WEEE Directive ..................................................................................................................... 68
18) DISMANTLING / DISPOSAL .............................................................................................................................. 69
19) GENERAL TECHNICAL DATA ......................................................................................................................... 70
19.1 Dimenions (AIR COMBO EVO 200, 200S) ......................................................................................................... 70

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19.2 Dimenions (AIR COMBO EVO 300, 300S) ......................................................................................................... 71
19.3 Electrical data ......................................................................................................................................................... 74
19.4 Operating limits ...................................................................................................................................................... 74
20) SOLAR SYSTEM (by the customer) .................................................................................................................... 75
21) SOLAR SYSTEM (by the customer) .................................................................................................................... 76
22) MODBUS PROTOCOL) ..............................................................................................................................78
23) PRODUCT DATA SHEET ................................................................................................................... 83
24) DECLARATION OF CONFORMITY .................................................................................................................. 87

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LIST OF PICTURES
Picture 1 – Personal protective equipment .................................................................................................... 13
Picture 2 – Protection removal ...................................................................................................................... 15
Picture 3 – AIR COMBO EVO 200 .............................................................................................................. 18
Picture 4 – AIR COMBO EVO 200 .............................................................................................................. 20
Picture 5 – AIR COMBO EVO 200 .............................................................................................................. 22
Picture 6 – AIR COMBO 300 ....................................................................................................................... 24
Picture 7 – AIR COMBO 300 ....................................................................................................................... 26
Picture 8 – AIR COMBO 300 ....................................................................................................................... 28
Picture 9 – functional spaces ......................................................................................................................... 31
Picture 10 – indicative hydraulic scheme (Standard unit) ............................................................................. 35
Picture 11 – indicative hydraulic scheme (unit with solar integration) ......................................................... 36
Picture 12 – Unit connections 200 / Picture 12A– Unit connections 300 ..................................................... 38
Picture 13 - Connections ................................................................................................................................ 39
Picture 14 – anti-intrusion grid ...................................................................................................................... 41
Picture 15 – anti-intrusion grid ...................................................................................................................... 61
Picture 16 – Tank emptying ........................................................................................................................... 62
Picture 17 – Dimenions AIR COMBO EVO 200, 200S ............................................................................... 70
Picture 18 – Dimenions AIR COMBO EVO 300, 300S ............................................................................... 71

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LIST OF TABLES
Table 1 – Symbology and terminology ........................................................................................................... 9
Table 2 – Standards for service and proper functioning ................................................................................ 12
Table 3: Components list AIR COMBO EVO 200 ....................................................................................... 19
Table 4: Components list AIR COMBO EVO 200 ....................................................................................... 21
Table 5: Components list AIR COMBO EVO 200 ....................................................................................... 23
Table 6: Components list AIR COMBO EVO 300 ....................................................................................... 25
Table 7: Components list AIR COMBO EVO 300 ....................................................................................... 27
Table 8: Components list AIR COMBO EVO 300 ....................................................................................... 29
Table 9: hydraulic scheme components (Standard unit) ................................................................................ 35
Table 10: hydraulic scheme components (unit with solar integration) .......................................................... 36
Table 11 - concentration constraints .............................................................................................................. 42
Table 12 - Components and wiring diagram description – AIR COMBO EVO 200, 200S .......................... 46
Table 13 - Components and wiring diagram description – AIR COMBO EVO 300, 300S .......................... 48
Table 14 – Preliminary checks ...................................................................................................................... 50
Table 15 – checks after installation ............................................................................................................... 50

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1) INTRODUCTION
1.1 General information
This manual refers to AIR COMBO EVO heat pump water heater and provides instructions for transport,
installation, assembly, control and use of the unit. It also provides information for maintenance work,
the presence of residual risks and instruction to personnel.
1.2 General information and precautions on using the machine.
This manual is designed to provide the user with a general knowledge of the machine and the
maintenance instructions considered necessary for its proper operation.
Please follow the instructions below:
• All operators and personnel involved in the use and maintenance of the unit must read this manual
entirely and with the utmost attention and comply with its contents.
• Store the manual in areas protected from humidity and heat and consider it an integral part of the unit
throughout its life, handing it over to any other user or future owner of the unit.
• Keep this manual together with the wiring diagram in a place accessible to the operator. Make a note
of the unit's identification data so that it can be provided to the service centre in the event of a service
request (see section "Service label 2.2"). Provide a machine booklet to keep track of the maintenance
works carried out on the unit; this will make it easier to keep track of the various operations and
facilitate troubleshooting.
• Do not damage, remove, tear or rewrite the manual or parts of it for any reason. In the event that the
manual is lost or partially damaged and it is therefore no longer possible to read its contents in full,
we recommend that you request a new manual from the manufacturer, stating the serial number of
the machine on the data plate.
Rossato S.p.A. has the right to update production and manuals, without the obligation to update previous
versions, except in special cases.
This manual reflects the state of the art at the time the unit was placed on the market and cannot be
considered inadequate simply because it was subsequently updated to reflect new technology.
To request any updates to the user manual or additions, which will be considered an integral part of the
manual, please send your request to the contact details given in this manual.
Please contact the manufacturer for further information and any proposals for improving the manual.
The manufacturer invites you, in case of transfer of the unit, to indicate the address of the new owner in
order to facilitate the transmission of any additions to the manual to the new sender.

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1.3 Responsibility
The unit is guaranteed in accordance with the contractual agreements made at the time of sale.
The manufacturer is exonerated from all liability and obligations, and the form of guarantee provided
for in the sales contract for any accidents to persons or property that may occur due to:
• non-compliance with the instructions in this manual with regard to the operation, use, installation,
maintenance and events unrelated to the normal and correct use of the unit;
• changes made to the unit and safety devices without prior written authorisation from the
manufacturer;
• attempted repairs carried out on one's own account or by unauthorised technicians;
• lack of regular and constant maintenance or use of non-original spare parts, unless otherwise agreed
in writing.
In any case, if the user attributes the accident to a defect in the unit, he must prove that the damage
occurred as a main and direct consequence of that 'defect'.
The manual enables correct installation, use and maintenance of the unit.
Read carefully to save time in the various operations. Follow the directions given in order to avoid
damage to property or persons.
1.4 Symbols and terminology used in the manual
DANGER
ATTENTION: This symbol indicates accident prevention regulations for the
user. Failure to observe the warning will result in risk of injury and/or damage
to persons, objects, plants or animals.
OBLIGATION
WARNING: This symbol indicates that there is a possibility of damage to the
system and/or its components.
INFORMATION: this symbol indicates useful information.
for INSTALLER use
Table 1 – Symbology and terminology

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2) PRESENTATION
2.1 Intended use
The use of this unit is recommended within the operating limits given in this manual which refers to
the following models:
• AIR COMBO EVO 200
• AIR COMBO EVO 200S
• AIR COMBO EVO 300
• AIR COMBO EVO 300S
2.2 Serial number label
The serial number label, located on the unit, allows all the machine's characteristics to be traced and
contains the information required by regulations, in particular:
• the type of unit;
• the serial number (12 digits);
• the year of construction;
• the wiring diagram number;
• electrical data;
• the type of refrigerant;
• the refrigerant load;
• manufacturer's contacts.
Tampering with, removal, absence of identification labels or anything else that does not allow
the product to be safely identified, makes any installation and maintenance operation difficult.
Therefore, the identification label must never be removed.
The appliance must be labelled to indicate that it has been decommissioned and emptied of
refrigerant. The label must be dated and signed. Check that labels indicating the content of
flammable refrigerant are attached to the appliance (only to be carried out by certified
personnel).
Make a note of the characteristic data on the label and record them in a table so that they are readily
available in case of need.
DATA
Fill in following fields:
MODEL
SIZE
SERIAL NUMBER
YEAR OF CONSTRUCTION

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2.3 Features
The machine is intended for use under normal environmental conditions as defined in section 1.4 of
EN 60204-1. These conditions relate to the use of the machine.
The machine must be operated by personnel who have been instructed in the characteristics of the
unit and the contents of this manual.
2.4 Regulatory references
By affixing mark to the unit, Rossato S.p.A. guarantees that AIR COMBO EVO complies with
Directive 2014/68UE PED.
2.5 Standards for service and proper functioning
The service regulations described in this manual form an integral part of the delivery of the unit.
They are intended for the operator who has already been specifically instructed to operate this type
of unit and contain all the necessary and indispensable information for the safe operation and
optimum use of the unit.
Hasty and deficient preparations force improvisation and this is the cause of many accidents.

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Please read the following tips carefully and adhere to them
Table 2 – Service standards and for proper functioning
Place the unit in environments where there is no danger of explosion, corrosion (proximity
to the sea), fire or where vibrations and electromagnetic fields are present. It is also
forbidden to operate in any other way than indicated or to neglect operations necessary for
safety.
In some areas of the unit, there are residual risks that could not be eliminated at the design
stage or delimited with guards due to the unit's particular functionality. Each operator
must be aware of the residual risks present in this unit in order to prevent possible
accidents.
Maintenance must be carried out in the absence of voltage and by trained personnel.
Ensure that the unit is disconnected from the power supply.
In all lifting operations, ensure that the unit is securely anchored to prevent accidental tipping or
falling. Do not move or lift the unit by the removable panels.
Initial start-up must only be carried out by qualified personnel authorised by the manufacturer.
Dismantling and demolition operations must be carried out by qualified personnel.
Failure to observe the instructions given in this manual with regard to the operation, use,
maintenance and all occurrences unrelated to the normal and correct use of the unit will
immediately invalidate the warranty.
Once the unit has been cleaned, the operator must check that there are no worn or damaged parts
or parts that are not securely fastened, otherwise ask the maintenance technician to intervene.

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3) HAZARDS AND PROTECTIONS
3.1 Prohibited uses and contraindications
The machine must be used for the purposes intended by the manufacturer. In particular, it is forbidden
to use the machine even partially:
• without guards and/or with deactivated, failed or missing safety devices;
• if the installation was not successful;
• if the atmosphere is explosive or in places where there is a fire hazard;
• outdoor where it may be exposed to rain or high humidity;
• in hazardous or malfunctioning conditions of the machine;
• for improper use of the machine (e.g. by untrained personnel);
• for use contrary to specific legislation;
• in the event of a power failure;
• after unauthorised modifications and/or interventions;
• with total or partial non-compliance with instructions;
• with materials and tools other than those specified by the manufacturer.
3.2 Safety protections
3.2.1 Personal protective equipment
It is mandatory to use the following personal protective equipment: gloves, head protection helmet,
safety goggles, safety shoes, noise protection headphones (Picture 1).
Picture 1 – personal protective equipment

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3.3 Fire extinguisher and first aid
The provision of a fire extinguisher and first aid kit is the responsibility of the owner of the
property on which the unit is installed.
• Place a first-aid kit and fire extinguisher near the unit.
• Ensure periodically that fire extinguishers are charged and that it is clear how to use them.
• In the event of fire, use it in accordance with current regulations and contact the fire brigade.
• Check periodically that the first aid kit is complete.
• Make sure you have first aid telephone numbers nearby.
• Use the safety labels listed below if necessary.
Generic alarm
Electrical
voltage
hazard
Risk of
burns
Danger
moving
parts
Danger
cutting
injuries

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4) HANDLING OF THE MACHINE
4.1 Handling
• Check that all handling equipment complies with local safety regulations (cranes, forklifts, ropes,
hooks, etc.).
• Equip personnel with personal protective equipment appropriate to the situation, e.g. helmet, gloves,
safety shoes, etc.
• Observe all safety procedures so as to ensure the safety of the personnel present and the material.
4.2 Lifting
• Check the weight of the unit and capacity of the lifting gear.
• Identify critical points in the handling route (uneven paths, ramps, steps, doors).
• Check minimum passage height.
• During transport, the unit may not be tilted more than 30°.
To avoid scratches or deformations to the surface of the unit, apply protective panels to the
contact surface. Avoid touching the pallets and other components with your fingers.
If the unit was tilted during transport, wait at least 2 hours before starting it up.
4.3 Packaging removal
Take care not to damage the unit.
Keep packaging material out of the reach of children as it is a potential source of danger.
Recycle and dispose of packaging material according to local regulations.
• Cut strapping along the joint (Figure 2-A).
Picture 2 – Protection removal
Front
Back

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4.4 Lifting and transporting
Check that all handling equipment complies with local safety regulations (cranes, forklifts,
ropes, hooks, etc.).
Equip personnel with personal protective equipment appropriate to the situation, e.g. helmet,
gloves, safety shoes, etc.
Observe all safety procedures to ensure the safety of the personnel present and the material.
To avoid injury, do not touch the air inlet or aluminium fins of the unit. Do not use the fan
grille handles to handle the unit.
When handling the unit, use equipment appropriate to the weight of the unit.
Keep the unit packed during handling. Remove the packaging only when finished.
4.5 Handle for handling

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4.6 IInspection
Check before accepting delivery:
Ø that the unit was not damaged during transport;
Ø that the material delivered corresponds to what is indicated on the transport document by comparing
the data with the identification label placed on the packaging.
In the event of damage or anomalies:
• Immediately note the damage found on the transport document and include the words: 'Withdrawal
with reservation due to obvious shortage/transport damage”;
Report by e-mail to Rossato S.p.A. ([e-mail]), enclosing photos and detailed description.
Complaints must be made within 8 days of receipt; reports after this deadline are not valid.

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5) MAIN COMPONENTS
Picture 3 – AIR COMBO EVO 200