Daikin Modular Rotary Service manual

Modular P and R
Translation of the original instructions
Installation, use and
maintenance manual
Modular Rotary
Modular Plate
AHMN-ADT-DAIKIN-EN

Daikin air handling units guarantee high quality indoor air at low energy costs. Fully
customisable systems or pre-configured standard modular units are available.
Armed with an extremely flexible development, Daikin air handling units are able to
satisfy all types of technical requirements.
Daikin systems guarantee respect for the environment since they are based on high
levels of energy efficiency. Reduced ecological impact and low energy consumption
make Daikin air handling units ideal for any type of market.

Contents
Important warnings 4
Purpose of the manual 4
Intended use of the machine 4
Safety regulations 5
What to do in case of accident? 7
Residual risks 8
Safety devices 9
Machine characteristics 10
Environmental conditions 10
Environmental contamination 10
Electrical panel limit operating conditions 10
Range specifications 11
Summary of machine operation 13
Attachments 13
Adhesives on the machine 14
Machine description 16
Receipt of the cartons 19
Reading the packaging symbols 19
Transport 20
Lifting using hooks 20
Lifting using a pallet truck 21
Lifting non-palletised equipment 21
Unpacking and verification of integrity 22
After unpacking 22
Reading the serial number plate 23
Storage waiting for installation 24
Installation 26
Commissioning 43
Use of the machine 44
Maintenance 45
Safety precautions for maintenance 45
Ordinary maintenance 46
Extraordinary maintenance 50
Diagnostics 52
Troubleshooting table 53
Repair log 54
Use 50

4
The pictogram shows a situation of immediate danger or a dangerous situation that might cause injuries or death.
The pictogram shows that it is necessary to adopt suitable behaviour in order to avoid jeopardising staff safety and
cause damages to the equipment.
The pictogram shows particularly important technical information that should be taken into consideration by the
people installing or using the equipment.
Important warnings
1
Purpose of the manual
The purpose of this manual is to guide the installer and qualified operator in the installation, mainte-
nance and proper and safe use of the equipment. For this reason, it is mandatory for all personnel
involved in installation, maintenance and supervision of the machine to read this manual.
Contact the manufacturer if any points are unclear or difficult to understand.
This manual contains information regarding:
-Technical specifications of the machine.
-Instructions for transport, handling, installation and assembly.
-Use.
-Information for instructing personnel authorised for its use.
-Maintenance activities.
All information refers in general to any unit of the Modular R and Modular P ranges. All units are shipped
accompanied by:
-electrical diagram;
-manual for all accessories;
-section coupling manual;
-operating manual;
-installation manual;
-declaration of conformity;
-electrical panel CE certification;
-electrical panel test report.
Intended use of the machine
This appliance has the function of treating the air intended to condition civil and industrial environ-
ments. Any other use is not in accordance with the intended use and therefore dangerous.
These ranges of units are designed for use in NON-explosive environments. For installation in poten-
tially explosive environments, the manufacturer can design and manufacture suitable machines (an-
ti-explosion) that will be identified by the mark.
If the machine is used in critical situations, by type of system or environmental context, the customer
must identify and adopt the technical and operational measures to avoid damage of any kind.

5
Safety regulations
Skills required for the use and maintenance of the machine
Generic operator: AUTHORISED to run the machine using commands placed on the keypad of the electrical control
panel. Performs only machine control operations, power on/off.
Maintenance mechanic (qualified): AUTHORISED to carry out maintenance, adjustments, replacement and repair
of mechanical parts. It must be a person competent in mechanical systems, therefore able to perform mechanical
maintenance in a satisfactory and safe manner, must possess theoretical preparation and manual experience. NOT
AUTHORISED to work on electrical systems.
Manufacturer's technician (qualified):AUTHORISED to perform complicated operations in every situation. Oper-
ates in accordance with the user.
Maintenance electrician (qualified): AUTHORISED to perform service of an electric nature, adjustments, mainte-
nance and electrical repairs. AUTHORISED to operate in the presence of an active electrical connection inside the
control panels and junction boxes. It must be a person competent in electronics and electrical engineering, therefore
able to work on electrical systems satisfactorily and safely, must possess theoretical knowledge and proven experi-
ence. NOT AUTHORISED to work on mechanical systems.
Skills required for the installation of the machine
Installers must perform operations according to their professional qualifications: all activities not within one's expertise
(i.e. electrical connections) must be carried out by specialised and qualified staff so as not to endanger one's safety and
the safety of the other operators interacting with the machine.
Transport and equipment handling operator: authorised person with recognised expertise in using transport
and lifting equipment.
Technical installer: expert technician, sent or authorized by the manufacturer or its representative, with adequate
skills and training to install the machine.
Assistant: technician subject to care obligations while lifting and assembling the equipment. He must be suitably
trained and informed about the operations to perform and the safety plans of the site/installation location.
In this manual, the technician competent to carry out each operation is specified.
Installers, users and maintenance staff for the machine must also:
- Be responsible and experienced adults without physical impairments, in perfect psychological and physical condition.
- Master the machine's operating cycle, therefore participate in theoretical/practical training alongside an expert machine operator,
or alongside a technician of the manufacturer.
In this manual, the technician competent to carry out each operation is specified.

6
Read this manual carefully before machine installation and maintenance and keep it for any
further future consultation by the various operators. Do not remove, tear out or rewrite any part
of this manual.
All installation, assembly, electrical connections to the mains and ordinary/extraordinary mainte-
nance must be performed only by qualied personnel authorised by the Retailer or Manu-
facturer after turning off the unit electrically and using personal protective equipment (i.e., gloves,
protective goggles, etc.), in compliance with the regulations in force in the country the equipment
is to be used in and the laws regarding the systems and safety in the workplace.
Installation, use or maintenance other than those specified in the manual may cause damage,
injury or death, invalidate the warranty and relieve the Manufacturer of any liability.
Use protective clothing and suitable equipment while handling or installing the equipment, in
order to prevent accidents and safeguard your own and other people's safety. Individuals not
assigned to installation or maintenance are NOT allowed to stand or pass through the work area
while the machine is assembled.
Disconnect the equipment from the mains before installing or maintaining it.
Before installing the equipment, check that the systems comply with the legal provisions in
force in the country of use and meet the specifications on the serial number plate.
It is the responsibility of the user/installer to check the static and dynamic stability relative to the
installation and to arrange environments so that people who are not competent or author-
ised DO NOT have access to the machine or to its commands.
It is the responsibility of the user/installer to make sure that weather conditions do not affect the
safety of persons and property during installation, use and maintenance.
Make sure the air intake is not located near any exhausts, flue-gases or other contaminating el-
ements.
Do NOT install the equipment in places exposed to strong winds, salt air, open flames or tem-
peratures exceeding 46°C (115°F).
After installation is complete, instruct the user on the correct use of the machine.
If the equipment does not work or functional or structural alterations are noted, disconnect it
from the mains and contact a service centre authorised by the Manufacturer or Retailer, with-
out attempting to repair it on your own. For any replacements request the use of original spare
parts.
Unauthorised actions, tampering or modifications that do not follow the information provided
in this manual can cause damage, injuries or fatal accidents and void the warranty.
The serial number plate on the unit provides important technical information, essential in case
of machine maintenance or repairs. We recommend that you do not remove, damage or modify
it.
In order to ensure correct and safe conditions of use, it is recommended to have the unit main-
tained and checked at least annually by a service centre authorised by the manufacturer or
dealer.
Failure to follow these instructions may cause damage and injuries, even fatal, voids the
warranty and relieves the Manufacturer of any liability.

7
Information ownership
This Manual contains proprietary information. All rights reserved.
This manual may not be reproduced or photocopied, in whole or in part, without the Manufacturer's
prior written consent. The use of this documentary material is allowed only to the customer to whom
the manual has been supplied as a kit for the machine and only for the purposes of installation, use and
maintenance of the machine to which the manual refers. The Manufacturer declares that the information
contained in this manual is congruent with the technical and safety specifications of the machine to
which the manual refers. The drawings, diagrams and technical data shown are updated to the date of
publication of this document and are valid exclusively for the machine they accompanied. The Manufac-
turer reserves the right to make changes or improvements to this documentary material without notice.
The Manufacturer accepts no responsibility for direct or indirect damage to persons, things or pets result-
ing from the use of this documentary material or the machine in conditions other than those provided for.
What to do in case of accident?
Installation, use and maintenance should always be performed along with other people who are able to provide assistance in
case of accident.
WHAT TO DO IN CASE OF AN ACCIDENT (general rules)
-remain calm and lucid, quickly examine the situation and act accordingly;
-if necessary, disconnect the machine's power supply;
-promptly call emergency services (118 in Italy) without abandoning the victim, explaining what happened and listening care-
fully to the instructions of the emergency services;
-carry out first aid (see section below), remain close to the accident victim, watching and comforting him/her with your presence until
the first responders arrive;
While waiting for rst responders:
-move the victim only if absolutely necessary, for example to move him/her away from more serious hazards (e.g., fire, gas leak, etc.);
-avoid coming into contact with any blood or secretions, protecting your hands with gloves and if possible the mucous membranes of
your eyes with protective glasses;
-if conscious, have the injured person lie down, loosen tight clothing, open the windows if in a closed place and keep back the bystand-
ers who tend to crowd the place. If unconscious, place the victim in the lateral safety position (see drawing) and cover him/her with
a blanket.
lateral safety position
-if the injured person is haemorrhaging (bleeding) significantly, promptly arrest the blood loss with manual compression, using a tour-
niquet only as a last resort (as it can lead to tissue damage);
-if the injured person is not breathing or is in cardiac arrest, perform CPR;
WHAT NOT TO DO:
-Never give alcohol to the injured person, and, if unconscious, any type of drink.
-Never take any action that is the physician's responsibility (e.g., administering medicines).

8
Residual risks
Despite having implemented and adopted all the safety measures indicated by applicable regulations,
some residual risks remain. In particular, in some operations of replacement, adjustment and tooling max-
imum attention is always required in order to work in the best possible conditions.
List of operations with residual risks
Risks for qualified personnel (electrician and mechanic)
-Handling - during unloading and handling it is necessary to pay attention to all the steps listed in this manual regarding the points
of reference
-Installation - during installation it is necessary to pay attention to all the steps listed in this manual regarding the points of reference
The installer must ensure the static and dynamic stability of the machine's site of installation.
-Maintenance - during maintenance it is necessary to pay attention to all the steps listed in this manual, and in particular to high
temperatures that may be present in the heat transfer fluid lines to/from the unit.
-Cleaning - the machine must be cleaned only when it is switched off, by turning off the switch installed by the electrician and the
switch located on the unit itself. The key for interrupting the power supply must be kept by the operator until the end of the clean-
ing operations. Internal cleaning of the machine must be carried out using the protections required by current regulations. While
the inside of the machine does not contain particular hazards, it is necessary to pay the utmost attention so that accidents do not
occur during cleaning. The heat exchange coils that have a potentially sharp finned pack must be cleaned using protective glasses
and gloves suitable for handling metals.
During adjustment, maintenance and cleaning there are residual risks of variable entity. Being operations
that must be performed with guards disabled, it is necessary to pay particular attention in order to avoid
damage to persons and things.
Always pay close attention when performing the operations specified above.
Remember that these operations must always be performed by authorised personnel.
All work must be completed in accordance with the legal provisions relating to work safety.
Remember that the unit in question is an integral part of a larger system that includes other components,
depending on the final characteristics of realisation and the mode of use. Therefore in the end it is the re-
sponsibility of the user and assembler to assess the residual risks and their respective preventive measures.
For more information about the possible risks, please refer to the RAD (Risk Assessment Docu-
ment) available from the manufacturer.

9
Safety devices
The machine is equipped with safety devices to prevent risks of damage to persons and for
proper operation. Always pay attention to the symbols and safety devices on the machine. It
should only operate with the safety devices engaged and with fixed or movable guards in-
stalled correctly and in the proper position.
If during installation, use or maintenance the safety devices have been temporarily removed
or disabled, the machine can be operated exclusively by the qualified technician who made
this change. It is mandatory to prevent other people's access to the machine. When finished,
restore the devices to their proper status as soon as possible.
Key lock (standard): the doors to access the machine's fan area have a key lock on the handle, to avoid their opening by unau-
thorised persons.
Micro Switch (optional): the doors to access the machine's fan areas can be equipped with a Micro Switch to interrupt the
power supply. They are of the "magnetic proximity sensor" type with polarised magnet, which cannot be excluded by means of
magnetised instruments, guaranteeing correct operation even in conditions of permanent humidity.
Protective guard (optional): in the transmission area the motor-cooling unit is equipped with a suitably shaped protective
guard, mechanically and jointly attached.
Safety handles (standard): double-click handle system for the access doors to the ventilating area of the machine to prevent
accidental opening during operation.

10
Environmental conditions
46°C
90% max
The machine was designed to operate in technical spaces or outdoors. It CANNOT operate
in environments with explosive material, high concentration of dust and in environments
with high temperatures (range from -25 to 46°C - maximum altitude: 2500 m above
sea level), unless specific production requests were made.
These machines are used to resolve thermohygrometric and air purity problems in both civil
and industrial environments.
Thanks to its modularity, each machine is able to adapt to different needs in terms of air
handling:
-civil
-airports
-banking
-commercial
-hotel
-museums, theatres, cinemas and auditoriums
-television and recording studios
-libraries
-data processing centres
The optimised choice of every detail, the search for maximum efficiency in each component, the adop-
tion of specific materials and constructive solutions transform environment friendliness and energy sav-
ings into valid and advanced technological solutions.
Environmental contamination
Depending on the installation operating environment, specific regulations must be followed and all the
necessary precautions must be taken to avoid environmental issues (a system that operates in a hospital
or chemical environment can have problems different from those in other sectors, even from the point of
view of disposal of consumable parts, filters, etc.).
It is mandatory for the buyer to inform and train workers regarding proper procedures.
Controller limit operating conditions
Operation (IEC 721-3-3):
-Temperature -40 ÷ +70 °C
-LCD -20 ÷ +60°C
-Humidity <90% relative humidity (without condensation)
-Min. air pressure 700 hPa, corresponding to a maximum of 3,000 m above sea level
-Transport (IEC 721-3-2) and storage:
-Temperature -40 ÷ +70 °C
-Humidity <95 % relative humidity (without condensation)
-Min. air pressure 260 hPa, corresponding to a maximum of 10,000 m above sea level
Machine characteristics
2

11
Range specifications
The MACHINE is designed and built for air treatment and can have different configurations depending on
the type of treatment requested by the customer. In this sense, the MACHINE consists of several sections,
each of them with a specific function, which may or may not be present according to the type of treat-
ment requested.
The supporting structure consists of profiles made by aluminium alloy extrusion. The fixing screws are
concealed in the profile itself so as to have smooth surfaces on the inside. The panels of the structure
consist of two zinc-plated box press-folded sheets injected with polyurethane. Alternatively, as an insu-
lator, mineral wool can be used. Where necessary, along the panels, doors with locked handles and/or
portholes are installed to inspect the inside of the machine.
Construction specifications:
- Profile type: anodised aluminium with thermal break
- Insulation panels: polyurethane or mineral wool
Base module
-Condensing or absorbing rotary recuperator, or with counterflow plates;
-Single suction EC-type centrifugal fans with integrated electronics (2 in parallel for each fan section for size 09-10);
-Pocket filters;
-Compact prefilters;
-Aluminium dampers;
-Condensate drain tank downstream of the recuperator (only for Modular-P model).
Additional modules
-In addition to the Basic Module, depending on the customer's needs, it is also possible to add optional
components:
-Mixing Module, used to vary the mixture of the supplied air;
-Attenuator in Exhaust Air;
-Attenuator in Fresh Air;
-Electric heating battery (preheating or post-heating);
-Additional rigid pocket filter;
-Hot water battery;
-Cold water battery
-As an alternative to water batteries, direct expansion batteries can be used for both heating and cooling.

12
Available modules:
-Battery module;
-Filter module
-Pre- and post-heating module;
-Flow separating module with side dampers;
-Mixing module;
-Single or combined silencing module;
-Combined silencing module with damper;
-Electric pre- or post-heating module;
-Humidification module
Attachments
To complete this manual, together with the delivery of the machine,
the following documents are issued:
-Electrical diagrams
-Operating manual
-Declaration of conformity
-Electrical panel certification

13
Summary of machine operation
Recovery
fan motor
assembly
EXTERNAL AIR
EXTERNAL
EXPULSION AIR
Damper
DamperRecuperator
by-pass
INTERIOR
RECOVERY AIR
SUPPLY AIR
Filter
Filter
Machine control
system
Heat
recuperator
Supply
fan motor
assembly
Machine control
system
RECOVERY AIR
EXTERNAL
SUPPLY AIR
INTERIOR
EXTERNAL AIR
EXHAUST AIR
Filter
Damper Filter
Damper Heat
recuperator
Supply
fan motor
assembly
1
2
operational diagram of a left-hand machine (MODULAR PLATE)
operational diagram of a right-hand machine (MODULAR ROTARY)

14
Adhesives on the machine
The following table describes the meaning of the various adhesives on the unit.
External air
right
Air supply
right
Air supply
left Fans
External air
left Damper
Exhaust
air
right
Extracted air
right
Cold water
inlet
Cold water
outlet
Hot water
inlet
Hot water
outlet
Filter
Extracted air
left
Electric
coil
Heat
recuperator
Liquid
coolant
inlet
Vapour
coolant
outlet
Humidification
Heat
exchange
coil
Condensate
drain
Control
Silencer
Exhaust
air
left
Drop
separator

15
Notes

16
Machine description (Modular Plate)
Seals
Sealing gasket in polyurethane, placed on door and panel
ledges.
Filters
Particular care is taken in the selection and arrangement of
the filters within the section, supplied by certified and inter-
nationally recognised producers.
Pocket filters are supplied with the machine. The custom-
er can choose an efficiency class between ePM10 50% and
ePM1 80%. Compact prefilters are 48mm thick. The customer
can select an efficiency class between ISO Coarse 55% and
ePM10 75%, according to ISO 16890. The stability of the filters
is guaranteed by an exclusive POLYSEAL fixing system that
allows comfortable replacement and excellent seal.
All the filters are equipped with a differential pressure switch
that makes it possible to monitor the level of filter blockage.
The filters are always mounted to be extracted from the dirty
side, in order to maintain the seal and avoid the release of
dust and contaminants into the circuit during replacement.
Frame with supporting structure
The frame is made of extruded profiles in anodised alumini-
um with a thermal break, having a 40x40 mm cross-section.
Coupling is done with nylon joints reinforced with glass fibre.
The profiles are always of the type with concealed screws,
double fins and chamber, making it possible to attach the
panels without the screw being visible from inside the ma-
chine. This is an advantage, for both aesthetic and safety
reasons. If people must work inside the machine for mainte-
nance or cleaning, they can work in total safety without run-
ning the risk of injury. The interior of the machine is therefore
without protrusions or discontinuities in the profiles.
The units are equipped with a continuous base along the en-
tire base and this is made entirely of aluminium (up to size 07
and in galvanized steel from Size 08 to 10).
The profiles have a thermal break, i.e., they are constructed
with an insulating element able to considerably limit the
thermal bridges towards the outside. This technology allows
reducing condensation on external surfaces and improves
the thermal insulation of the machines.

17
Fan motor assemblies
The fans used on the units are of
the EC type, procured from the
best manufacturers. This technolo-
gy guarantees high efficiency and
reduced noise in extremely compact dimensions. The maintenance of these machines is very limited,
as the motor is directly keyed on the impeller.
Doors and handles
Each door of the ventilating sections is equipped with a se-
curity key, thus allowing access only to authorised personnel.
All locking handles on the same machine are identical.
Hinges
The hinges are made of black painted zamak alloy
Panels
The panels are made of double sheet metal folded into a box
enclosing the hot-injected polyurethane (density of 45 Kg/
m3 and fire reaction Class 1) or mineral wool (density of 120
Kg/m3 and fire reaction Class 0).
The material of the external sheet can be customised ac-
cording to the need for resistance to corrosion, ranging from
Aluzinc to pre-painted sheet metal.
The panels are attached with stainless self-drilling screws
housed in nylon bushes: the latter are embedded in the pan-
el and include a closing cap.
The use of stepped panels allows coupling with the profiles
that guarantees the continuity of the internal surface and a
better thermal insulation of the machine.
Heat recuperators
The recovery sections are made using counterflow recuper-
ators (Modular P). The exchange of energy between the out-
door air and the recovered air makes it possible to pre-treat
the supply air, lowering the heat output necessary for the
complete treatment.

18
Machine description (Modular Rotary)
Seals
Sealing gasket in polyurethane, placed on door and panel
ledges.
Filters
Particular care is taken in the selection and arrangement of
the filters within the section, supplied by certified and inter-
nationally recognised producers.
Pocket filters are supplied with the machine.
The customer can choose an efficiency class between ePM10
50% and ePM1 80%. Compact prefilters are 48mm thick. The
customer can select an efficiency class between ISO Coarse
55% and ePM1 80%, according to ISO 16890. The stability of
the filters is guaranteed by an POLYSEAL fixing system that
allows comfortable replacement and excellent seal.
All the filters are equipped with a differential pressure switch
that makes it possible to monitor the level of filter blockage.
The filters are always mounted to be extracted from the dirty
side, in order to maintain the seal and avoid the release of
dust and contaminants into the circuit during replacement.
Frame with supporting structure
The frame is made of extruded profiles in anodised alumini-
um with a thermal break, having a 40x40 mm cross-section.
Coupling is done with nylon joints reinforced with glass fibre.
The profiles are always of the type with concealed screws,
double fins and chamber, making it possible to attach the
panels without the screw being visible from inside the ma-
chine. This is an advantage both for aesthetic reasons and for
safety: if people must work inside the machine for mainte-
nance or cleaning, they can work in total safety without run-
ning the risk of injury. The interior of the machine is therefore
without protrusions or discontinuities in the profiles.
The units are equipped with a continuous base along the en-
tire length and is made entirely of aluminium.
The profiles have a thermal break, i.e., they are constructed
with an insulating element able to considerably limit the
thermal bridges towards the outside. This technology avoids
condensation problems on external surfaces and improves
the thermal insulation of the machines.

19
Fan motor assemblies
The fans used on the units are of
the EC type, procured from the
best manufacturers. This technolo-
gy guarantees high efficiency and reduced noise in extremely compact dimensions. The maintenance
of these machines is simple and fast, as the motor is directly keyed on the impeller.
Doors and handles
Each door of the ventilating sections is equipped with a se-
curity key, thus allowing access only to authorised personnel.
All locking handles on the same machine are identical.
Hinges
The hinges are made of black painted zamak alloy
Panels
The panels are made of double sheet metal folded into a box
enclosing the hot-injected polyurethane (density of 45 Kg/
m3 and fire reaction Class 1) or mineral wool (density of 120
Kg/m3 and fire reaction Class 0).
The material of the external sheet can be customised ac-
cording to the need for resistance to corrosion, ranging from
Aluzinc to pre-painted sheet metal.
The panels are attached with stainless self-drilling screws
housed in nylon bushes: the latter are embedded in the pan-
el and include a closing cap.
The use of stepped panels allows coupling with the profiles
that guarantees the continuity of the internal surface and a
better thermal insulation of the machine.
Rotary recuperators
All the rotary recuperators supplied comply with the latest
directives and regulations applicable to safety, performance
and labelling in force within the European Community.
There are “sorption” and condensing models, chosen by the
customer during the selection phase.
Each recuperator is equipped with a motor and transmission
with belt and pulley.
The inverter has a 230V/1ph/50-60Hz input power supply,
230V/3ph output power supply to the motor, IP54 protec-
tion degree, 0-10V control analogue input, alarm relay out-
put. Each rotary recuperator is equipped with an air-tight
brush-type seal with an internal plastic blade which ensures
greater seal along the entire perimeter of the wheel.

20
Parts and accessories
Dampers
The dampers of the Modular range are all made of aluminium with gasket,
with class II seal according to EN 1751. The external and exhaust air damp-
ers can be equipped with a rainproof system or an anti-pest net.
Internal structure
The internal sheets used for attaching components like fans, filters and re-
cuperators are entirely made of Aluzinc, guaranteeing high resistance to
corrosion. All points of contact with the internal section are equipped with
gaskets to ensure a superior seal against air leakage. The condensate col-
lection tanks in the counter flow recuperators (Modular P) are made entirely of stainless steel, thus ensur-
ing maximum durability. The welds of the exhaust pipe and of the edges are made of continuous wire in
an inert gas atmosphere.
Heat exchange coils (Only in the coil module)
The heat exchange coils are of the finned pack type. This component is made of copper tubes, aluminium
frame and BLUE FIN aluminium fins. Depending on the choices, the coils can use water or direct expan-
sion. In both cases, the battery is controlled. In the case of DX units are supplied with“ERQ Daikin" control
board and "Daikin" electronic expansion valve mounted and connected. In the case of water batteries,
the control is entrusted to a three/two-way valve complete with modulating actuator supplied separately.
Condensate collection basins
The condensate collection tanks in the counter flow recuperators (Modular P) are made entirely of stain-
less steel, thus ensuring maximum durability. The welds of the exhaust pipe and of the edges are made of
continuous wire in an atmosphere of inert gas: all the welds are protected with zinc-based paints.
Anti-vibration joints
On request, the units can be equipped with anti-vibration joints for the connection of the external air
ducts to the machine. These components are flanged and made of fire-retardant PVC-coated polyester
fabric.
Covering roof
The machines for outdoor use can be equipped with Aluzinc roofs, resistant to corrosion and therefore
ensuring the extreme durability of the component.
Silencers
With drawstring with 100 mm thick silencing partitions. The silencers are built according to the VDI6022
hygiene standard and the silencing material is rock wool protected by a flake-proof film compliant with
the VDI6022 standard. .