Carel humiFog UA2501D504 User manual

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& SIGNAL
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READ CAREFULLY IN THE TEXT!
INSTALLATION MANUAL
humiFog Multizone Touch Oil-free
pumping station
humiFog Multizone Touch Oil-free
+0300125IT - ENG
Up to date version available on
www.carel.com
ENG

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humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
GENERAL WARNINGS
FAILURE TOCAREFULLY HEED THE WARNINGS SHOWNINTHISMAN-
UAL COULD LEAD TOFIRE OR EXPLOSION AND CONSEQUENT DAM-
AGE TOPROPERTY, INJURY OR DEATH.
CAREL Industries humidiers are advanced products, whose operation is
specied in the technical documentation supplied with the product or
can be downloaded, even prior to purchase, from the website www.carel.
com. Each CAREL product, in relation to its advanced level of technology,
requires setup/conguration/programming to be able to operate in the
best possible way for the specic application. Failure to complete such
operations, which are required/indicated in the user manual, may cause
the nal product to malfunction; CAREL accepts no liability in such cases.
The customer (manufacturer, developer or installer of the nal equipment)
accepts all liability and risk relating to the conguration of the product in
order to reach the expected results in relation to the specic nal installa-
tion and/or equipment. CAREL may, based on specic agreements, act as
a consultant for the installation/commissioning/use of the unit, however
in no case does it accept liability for the correct operation of the humid-
ier and the nal installation if the warnings or suggestions provided in
this manual or in other product technical documents are not heeded. In
particular, as well as observing the above warnings and suggestions, the
following warnings must be OBSERVED for correct use of the product:
ELECTRIC SHOCK HAZARD: the humidier contains live electrical com-
ponents.Disconnect the mains power supply before accessing inside
parts or during maintenance and installation.
WATER LEAK HAZARD: the humidier automatically and constantly lls/
drains certain quantities of water. Malfunctions in the connections or in
the humidier may cause leaks.
CAUTION
• Disconnect the appliance from the mains power supply before access-
ing any internal parts.
• Environmental and power supply conditions must conform to the val-
ues specied on the product rating labels.
• The product is designed exclusively to humidify rooms either directly or
through distribution systems (ducts).
• Only qualied personnel who are aware of the necessary precautions
and able to perform the required operations correctly may install, oper-
ate or carry out technical service on the product.
• Only water with the characteristics indicated in this manual must be
used to produce the spray.
• All operations on the product must be carried out according to the
instructions provided in this manual and on the labels applied to the
product. Any uses or modications that are not authorised by the manu-
facturer are considered improper. CAREL declines all liability for any such
unauthorised use.
• Do not attempt to open the appliance in any way other than described
in the manual.
• Observe the standards in force in the place where the humidier is in-
stalled.
• The appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of expe-
rience and knowledge, unless they have been given supervision or in-
struction concerning use of the appliance by a person responsible for
their safety.
• Do not install and use the product near objects that may be damaged
when in contact with water (or condensate). CAREL declines all liability
for direct or indirect damage following water leaks from the humidier.
• Do not use corrosive chemicals, solvents or aggressive detergents to
clean the inside and outside parts of the humidier, unless specically
indicated in the user manual.
• Do not drop, hit or shake the humidier, as the inside parts and the lin-
ings may be irreparably damaged,
CAREL adopts a policy of continual development. Consequently, CAREL
reserves the right to make changes and improvements to any product
described in this document without prior warning. The technical speci-
cations shown in the manual may be changed without prior warning.
The liability of CAREL in relation to its products is specied in the CAREL
general contract conditions, published on the website www.carel.com
and/or by specic agreements with customers; specically, to the extent
where allowed by applicable legislation, in no case will CAREL, its employ-
ees or subsidiaries/aliates be liable for any lost earnings or sales, losses of
data and information, costs of replacement goods or services, damage to
things or people, downtime or any direct, indirect, incidental, actual, puni-
tive, exemplary, special or consequential damage of any kind whatsoever,
whether contractual, extra-contractual or due to negligence, or any other
liabilities deriving from the installation or use of the product, even if CAREL
or its subsidiaries/aliates are warned of the possibility of such damage.
DISPOSAL
Fig. 1 Fig. 2
PLEASE READ AND KEEP.
WITH REFERENCE TO EUROPEAN UNION DIRECTIVE 2012/19/EU IS
SUED ON 4 JULY 2012 AND RELATED NATIONAL LEGISLATION, PLEASE
NOTE THAT:
• Waste Electrical and Electronic Equipment (WEEE) cannot be disposed
of as municipal waste but must be collected separately so as to allow
subsequent recycling, treatment or disposal, as required by law;
• users are required to take Electrical and Electronic Equipment (EEE) at
end-of-life, complete with all essential components, to the WEEE collec-
tion centres identied by local authorities. The directive also provides
for the possibility to return the equipment to the distributor or retailer
at end-of-life if purchasing equivalent new equipment, on a one-to-one
basis, or one-to-zero for equipment less than 25 cm on their longest
side;
• the equipment may contain hazardous substances: the improper use or
incorrect disposal of such may have negative eects on human health
and on the environment;
• the symbol (crossed-out wheeled bin, see Figure 1), if shown on the
product or on the packaging, indicates that the equipment must be dis-
posed of separately at end-of-life;
• if at end-of-life the EEE contains a battery (Figure 2), this must be re-
moved following the instructions provided in the user manual before
disposing of the equipment. Used batteries must be taken to appropri-
ate waste collection centres as required by local regulations;
• in the event of illegal disposal of electrical and electronic waste, the
penalties are specied by local waste disposal legislation.
Warranty on materials: 2 years (from production date, excluding consum-
ables).
Approval: the quality and safety of CAREL products are guaranteed by the
ISO 9001 certied design and production system, as well as the
and marks.
Warnings

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humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
Index
1. Purpose of the manual............................................. 7
2. How to read the manual .......................................... 7
3. General safety information and instructions ...... 8
3.1 Intended use........................................................................................................8
3.2 General safety instructions .........................................................................8
3.3 Personal protective equipment...............................................................9
4. Introduction............................................................. 10
4.1 Components..................................................................................................... 10
4.2 System layouts.................................................................................................10
4.3 Pumping station............................................................................................. 14
4.4 Opening the packaging ............................................................................ 14
4.5 Positioning.........................................................................................................15
4.6 Opening...............................................................................................................15
4.7 Identication.....................................................................................................15
4.8 Structure..............................................................................................................16
4.9 Accessories ........................................................................................................16
5. Installation notes .................................................... 19
5.1 Network connection....................................................................................19
5.2 Distribution system ......................................................................................20
5.3 Functional diagrams - duct ..................................................................... 20
5.4 Functional diagrams - room....................................................................21
5.5 Backup and rotation.....................................................................................22
6. Installation ............................................................... 23
6.1 Water connections........................................................................................23
6.2 Feedwater........................................................................................................... 24
6.3 Electrical connections................................................................................. 25
6.4 Control connections....................................................................................26
6.5 Solenoid valve connections.................................................................... 26
6.6 Inputs and outputs.......................................................................................26
7. MAINTENANCE ........................................................ 28
7.1 Hygienic aspects............................................................................................28
7.2 Planned preventive maintenance....................................................... 30
7.3 Unscheduled service...................................................................................30
7.4 Pump maintenance......................................................................................30
8. Technical data.......................................................... 33
8.1 Technical specications.............................................................................33
8.2 Terminal tightening torque.....................................................................33
8.3 Fuse chart ...........................................................................................................33
9. Checklist ................................................................... 34
10. ANNEXES.................................................................. 35
Annex A: Wiring diagrams...................................................................................35
Annex B: Accessories and spare parts kits.................................................37
Index

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How to read the manual
humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
This manual contains the instructions for the installation and maintenance of the humiFog high-pressure adiabatic humidica-
tion system, manufactured by:
CAREL INDUSTRIES
Via dell’Industria, 11, 35020
Brugine - Padova (Italy)
Tel. [phone] - Fax [phone]
e-mail: [e-mail] - www.carel.com
1. PURPOSE OF THE MANUAL
The manual is divided into chapters and paragraphs. Each paragraph is a sub-level of the corresponding chapter. References to
headings or paragraphs are indicated by the abbreviation“Chap.” or“Par.”followed by the number. Example: “Chap. 2”or“Par. 2.1”.
The gures in this manual are numbered consecutively according to the corresponding chapter, for example Figure 1.c is the
third gure in chapter one. References to the gures are indicated by the abbreviation “g.” followed by the number. Example:
“Fig. 1.c”.
The components shown in the gures are marked with numbers. A reference to component 1 in gure 2, chapter 3 will be indi-
cated as follows:“See 1 - Fig. 3.b”or simply “(1 - Fig. 3.b)”.
CAUTION
The gures shown in this manual are purely indicative. The actual components may vary from those illustrated. If in doubt, con-
tact an authorised service centre.
In addition to the instructions for installation, use and maintenance, this manual contains safety information that requires special
ATTENTION. This information is denoted by the symbols described below:
DANGER
Failure to comply with this warning will lead to an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
Failure to comply with this warning will lead to potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
Failure to comply with this warning will lead to a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury.
CAUTION
Failure to comply with this warning will lead to a potentially hazardous situation which, if not avoided, could cause minor dam-
age to the unit.
Notice: provides supplementary information to the above safety instructions.
2. HOW TO READ THE MANUAL

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General safety information and instructions humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
3. GENERAL SAFETY INFORMATION AND
INSTRUCTIONS
3.1 Intended use
humiFog is a high pressure adiabatic humication system for humidity control and evaporative cooling. It can be used both to
condition the air in an AHU (air handling unit), and for direct humidication or cooling in rooms.
CAUTION: The product must only be used for its intended purpose, as envisaged by CAREL. CAREL declines all liability,
both contractual and extra-contractual, for any damage to people, animals or things due to installation, control or maintenance
errors or improper use.
3.2 General safety instructions
When using products that require electricity and a source of high-pressure water, a number of fundamental safety rules need to
be observed, including:
• The appliance must not be used by children or people with reduced physical, sensory or mental capabilities, or people lacking
the necessary experience or knowledge or who are not familiar with the operating instructions.
• People without specic qualications and skills must not use the pumping station.
• People must not come into contact with the appliance if barefoot or any of the parts of their body are wet.
• No technical or cleaning operations are allowed until the appliance has been isolated from the power supply by moving the
main system switch to“o”and the main switch on the appliance to “OFF”.
• The safety and control devices must never be adjusted without the manufacturer’s authorisation.
• The pictograms and labels axed to the pumping station must not be removed. These must remain legible and the corre-
sponding instructions must be observed at all times. If they are no longer legible, they must be replaced with equivalent
pictograms or safety labels.
• The water connections must never be loosened during operation. Improperly secured pipes or hoses may detach without
warning, resulting in injury.
• Do not block or obstruct the water drain.
• Do not pull, disconnect or twist the electrical cables coming out of the appliance, even when this is disconnected from the
mains power supply.
• Never expose the appliance to the elements. It is designed for indoor use only.
• Do not dispose of the packaging material in the environment and keep it out of the reach of children, as it is a potential hazard.
It must be disposed of in accordance with current legislation.
• Do not activate the pumping station without it being adequately supplied with water.
• The customer is responsible for ensuring that the humidication system complies with local guidelines on occupational
health and safety and prevention of bacterial proliferation.
• In the event of water leaks, disconnect the pumping station from the power supply, shut o the water supply and promptly
notify CAREL’s Technical Service or other professionally qualied personnel.
• Periodically check that the water circuit operating pressure is above 1 bar and below than the maximum limit specied for the
appliance. Otherwise, contact CAREL’s Technical Service or other professionally qualied personnel.
• If the pumping station is not used for an extended period, the following operations need to be carried out:
- Turn the main switch on the appliance to“OFF”
- Turn the main system switch to“o”
- Close the system water taps
- Empty the system if there is the risk of freezing.
• This instruction manual is an integral part of the appliance and consequently must be kept with care and must ALWAYS
accompany the pumping station even if it is transferred to another owner or installed in another system. If damaged or loss,
another copy can be ordered from CAREL’s local Technical Service.
• Read this instruction manual read carefully to ensure proper and safe installation, operation and maintenance of the appli-
ance. The owner must be adequately informed and trained on how to use the appliance. Users must be familiar with all the
information needed for safe operation of the system.
• Before connecting the pumping station to the water and power supply, it can be exposed to temperatures between -10°C and
40°C. Once commissioned, it can be exposed to temperatures between 5°C and 40°C.
• Periodically check that the water drains are not blocked.

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General safety information and instructions
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3.3 Personal protective equipment
DANGER Strictly follow the instructions provided in the manual.
Personal protective equipment (PPE) means any equipment intended to be worn and kept by workers in order to protect them-
selves against one or more risks likely to threaten their health or safety during work, as well as any device or accessory intended
for this purpose.
All PPE described in this manual are intended to protect personnel from health and safety risks.
Below is a list of personal protective equipment to be used and the procedures to be adopted to protect workers from the re-
sidual risks that exist during the various phases of the humidier’s life cycle.
GLOVES TO PROTECT AGAINST PHYSICAL ELEMENTS:
these must protect the person's hands against cuts, abrasion and heat.
NON-SLIP SAFETY FOOTWEAR: these must prevent falls on slippery surfaces and protect the person's feet from
impact, crushing and puncture wounds.
SAFETY HARD HAT: this must protect the person's head against bumps or material accidentally falling from above.
SAFETY GLASSES: these must protect the person's eyes from all risks due to contact with hazardous substances or
materials.
PROTECTIVE MASK: this protects the wearer’s respiratory tract against all risks associated with the inhalation of
dangerous substances.
PROTECTIVE CLOTHING: this guarantees the body adequate protection against thermal and chemical agents.
EARMUFFS: these must attenuate noises that would otherwise be harmful to the person's hearing.
INSTRUCTION MANUAL: this must be referred to whenever necessary, in order to avoid adopting unsafe proce-
dures.

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Introduction humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
4. INTRODUCTION
4.1 Components
• Pumping station, comprising the system pump and the electrical panel;
• zone electrical panel;
• distribution system and droplet separator for humidication in air handling units;
• blower unit for in-room humidication.
The range includes the pumping station in the humiFog multizone and humiFog multizone Touch versions, which dier in terms
of the components supplied, the accessories available and the dierent system conguration modes.
The system can comprise:
• single zone: 1 pumping station with 1 atomisation system;
• multizone: 1 pumping station that supplies up to 12 independent atomisation systems.
Notice:
• to connect the pumping station to the blowers, use the water circuit assemblies and electrical panels supplied separately by
Carel (see the list of accessories);
• to facilitate commissioning, plates already equipped with electrical connectors are available for simply and quickly connecting
the electrical panels to the solenoid valves on the distribution manifolds.
The following diagrams provide an overview of the systems that can be implemented.
4.2 System layouts
4.2.1 Air handling unit (AHU)
Notice:
Correct design and construction of the humidication chamber is essential to ensure hygiene during operation. The following
aspects are of key importance:
• internal surfaces must be made from stainless steel or other material that does not favour microbial growth and that is per-
manently resistant to corrosion;
• there must be a drain between the distribution manifolds and the droplet separator and downstream of the droplet separator;
• the dimensions specied in the “Check list” relating to the installation of the droplet separator with respect to the drain tank
must be respected;
• drainage systems must not be directly connected to the sewer;
• access must be provided to the distribution manifolds and to the droplet separator in the humidication chamber;
• there must be an inspection opening (minimum diameter 150 mm) equipped with a system for blocking out light;
• there must be inside lighting that can be controlled from the outside and whose operating status can be clearly identied
from the outside;
• the free space between the nozzles and the droplet separator must comply with the humidication system design data;
• a relative humidity of 90% must not be exceeded downstream of the humidication chamber, therefore it is strongly recom-
mended to install a limit humidity probe directly connected to the humidier;
• in the event of shutdown or failure of the AHU fan, the humidier must switch o automatically via an interlock;
• ensure gradual shutdown of the AHU to ensure the humidication chamber dries before switching o;
• any residual water due to surface tension must be completely dried by blowing dry air through the system;
• the electrical cables wired to the solenoid valves on the distribution manifolds must follow the shortest route and not rest on
the bottom, so as to avoid possible contact with stagnant water.

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Internal rack valves
10
6
7
8
3
5
4
12
9
Fig. 4.a
Ref. Description
1 Pumping station
2 Electrical cables
3 Distribution manifolds
4 Zone panel
5 Droplet separator
6 Drain trap
7 Open funnel drain (after droplet separator)
8 Open funnel drain (before droplet separator)
9 High pressure water line
10 Line drain valve
Tab. 4.a

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Multizone
2
3
3
1
Fig. 4.b
Ref. Description
1 Pumping station
2 Ethernet cable
3 Zone electrical panel
Tab. 4.b
Notice: for the Ethernet connection from the pumping station to the zone electrical panels, see “Installation notes”.

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4.2.2 Room
Notice:
• do not install the blowers in niches, closed corridors or behind curtains, as this would hinder the uniform distribution of hu-
midied air;
• the air leaving the blowers is colder and more humid, and the noise levels of the nozzles and fans must be taken into consid-
eration. Position the blowers so as not to cause discomfort to the occupants of the room;
• do not install in areas where the air is contaminated, especially by micro-organisms or allergens.
Single zone
Direct Box
Direct Box
1
5
3
Sensore
di umidità
Quadro
elettrico
di zona
2
4
Fig. 4.c
Multizone
Direct Box
Direct Box
1
2
6
5
Direct Box
Direct Box
Quadro
elettrico
di zona 2
Quadro
elettrico
di zona 1
Zona 1 Zona 2
Sensore
di umidità 1
Sensore
di umidità 2
3
4
Alimentazione
Fig. 4.d
Ref. Description
1 Pumping station
2 Directbox hydraulic
3 Blower unit
4 Zone electrical panel
5 Directbox electric
6 Ethernet cable
Tab. 4.c
Humidity
sensor
Humidity
sensor 1
Humidity
sensor 2
Power supply
Zone 1 Zone 2
Zone 2
electrical
panel
Zone 1
electrical
panel
Quadro
elettrico
di zona

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Introduction humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
4.3 Pumping station
4.3.1 Part numbers
humiFog multizone Touch models
UA**** * 5 0 *
Range Flow-rate kg/h Model Power supply and approval Revision no. Customi-
sation
Pump type
UA:
humiFog
250: 250 kg/h 1: humiFog
multizone
Touch
D: 230 Vac 50/60 Hz, 1~, CE
L: 400 Vac 50/60 Hz, 3~, CE
: Fifth
revision
0: Carel 4: Oil-free stainless steel
600: 600 kg/h
1K3: 1350 kg/h
Tab. 4.d
Notice: in accordance with the requirements of EN60204-1; EN61000-6-2-; EN61000-6-4 in the most recent editions.
4.3.2 Dimensions - mm
942
1232
847
4
5
.
4
975
1135
6
2
.
0
Fig. 4.e
4.3.3 Weight - kg
humiFog Multizone Touch Oil-free models Weight with/without packaging [kg]
UA2501*504 105/95
UA6001*504 112/102
UA1K31*504 126/116
Tab. 4.e
4.4 Opening the packaging
• check that the packaging is intact upon delivery and notify the carrier immediately, in writing, of any damage that may be due
to improper or negligent transport;
• move the pallet with the pumping station to the installation site before removing it from the packaging, lifting the box using
suitable lifting/handling equipment;
• place it near the position where it will be installed;
• remove the packaging.
CAUTION: make sure the load does not swing when lifting it.
4.4.1 Material supplied
After opening the packaging and removing the front panel, check that the following are present:
• 1 cable gland (A) for the power supply cable;
• 1 cable gland (B) for the electric cable coming out of the pumping station;
• 1 key (C) for opening the panels,
• installation manual
AB
C
Fig. 4.f

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4.5 Positioning
Install the pumping station on the oor, indoors, so as to ensure:
• accessibility of the display and that this can be clearly read;
• opening of the front panel;
• accessibility to the inside parts for maintenance;
• connection of the water supply and drain lines;
• power and control electrical connections;
• shelter from rain, water spray and direct sunlight and from any heat source;
The temperature/humidity sensors needed to control the humidier must not be in contact with the mist and must be placed
away from direct sunlight and any heat source.
min
500 mm
min
500 mm
min
500 mm
min
1000 mm
Entrata
ARIA
Uscita
ARIA
Fig. 4.g
Notice:
• check with a spirit level that the
unit is placed on a horizontal
surface;
• if the unit is positioned up
against a wall, do not place
any objects on it that block the
cooling air.
4.6 Opening
Open the panels using the key supplied (gure) to access the electrical panel (A) and the water circuit section (B).
APERTO
APERTO
A
B
Fig. 4.h
4.7 Identication
The pumping station can be identied by the rating plate located inside the electrical panel.
TYPE
Pnom kW
Qnom kW
G20(nat.gas)
G25(nat.gas)
Vac
Hz
PH
kW
kg / h
IP
NOx cl
Date
CODE
IP
Date
Part N o.
Serial No.
Rev.
MADE IN ...
CAREL INDUSTRIES
Via dell'Industria, 11, 35020Brugine
(Padova) Italy
Fig. 4.i
CAUTION: tampering, removal or absence of the rating plate or anything else that does not allow certain identication
of the product will make any installation or maintenance operations dicult and will void the manufacturer’s warranty.
Inlet
AIR
Outlet
AIR
min min
min
min
OPEN
OPEN

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4.8 Structure
3
4
5
6
7
8
9
14
15
16
10
18
20
21
19
11
2
1
22 13
23
12
17
A
1 : 2
Fig. 4.j
Ref. Description
1 Opening for the power cable
2 On/O switch
3 Inlet pressure gauge
4 Low pressure probe
5 Water inlet
6 Supply solenoid valve
7 Cooling fan
8 High pressure switch
9 Temperature probe
10 Thermostat
11 User terminal
12 Electrical panel
13 Openings for cable glands
14 High pressure outlet pressure gauge
15 High pressure control valve
16 High pressure probe
17 Elastic joint (internal)
18 Water outlet
19 Cabinet drain solenoid valve
20 Cabinet drain
21 Pressure relief valve
22 Conductivity meter
Tab. 4.f
4.9 Accessories
Zone electrical panel
Electrical panel to be connected to the pumping station for managing multizone in-room or duct systems.
Fig. 4.k
Ref. Description
UA000SD500 230 V electrical panel
Tab. 4.g
4.9.1 In-room humidication

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directBOX hydraulic
Water circuit assembly for interfacing the pumping station with the blowers for in-room humidication. It contains the solenoid
valves for pressurising 1/2 water lines (zone/step). See technical leaet +050001828.
Fig. 4.l
Ref. Description
UAKDLASV10 directBOX hydraulic for managing 1 zone/step
UAKDLASV20 directBOX hydraulic for managing 2 zones/steps
Tab. 4.h
directBOX electric
Electrical panel for interfacing the pumping station with the blowers for in-room humidication. It receives the control signal for
the ll and drain valve (1 or 2 zones/steps) and relays this to the directBOX hydraulic to actuate the valves. At the same time it
controls the blower fans, which are only activated when there is a humidication request.
See technical leaet +050001828.
Fig. 4.m
Ref. Description
UAKDLAEL10 directBOX electric for managing 1 zone/step
UAKDLAEL20 directBOX electric for managing 2 zones/steps
Tab. 4.i
Blower unit
The blowers are positioned directly in the room to be humidied and cooled. They dier in terms of ow rate and direction of
spray. They are connected to the pumping station via the directBOX hydraulic and directBOX electric accessories. See technical
leaet +050001852 downloadable via the QR code in Fig 4.o.
Fig. 4.n
DL A0 * * * * 0 0
range Number of nozzles Power supply Distribution Nozzle size (l/h) -- --
2D: 230 Vac 50 Hz, 1~,
U: 115 Vac 60 Hz, 1~
F: front outlet
B: front and rear
0: 1.45
41: 2.80
82: 4.00
Manifolds with nozzles

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Introduction humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
The distribution system is designed according to the specic application and comprising manifolds, solenoid valves, nozzles,
pipes and ttings.
Fig. 4.o
4.9.2 Ducted humidication
Racks
The distribution system is designed according to the specic application and comprising manifolds with nozzles and xing
frame in the duct, available in the fully- or partially-assembled versions.
Fig. 4.p
The racks are available with:
• horizontal or vertical collectors;
• solenoid valves tted on the rack or outside of the air handling unit.
Droplet separator
Frame with stainless steel or breglass modules.
Notice: the modules are sized according to the specic application.
Fig. 4.q

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Installation notes
humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
5. INSTALLATION NOTES
5.1 Network connection
See the technical data table for the specications of the connection cables.
5.1.1 Zone panel connection
The connection is made using an Ethernet cable from the pumping station to the zone panels, as shown in the gure.
CAUTION: the maximum allowed length of an Ethernet connection between two devices is 100 m (for longer distanc-
es, use switch P/N KITSE08000).
...
Quadro
di zona
1
Quadro
di zona
2
Quadro
di zona
12
NOL
Zona 1 Zona 2 Zona 12
NOV NOV NOV
Fig. 5.a
Ref. Description
NOL Normally open line drain valve
NOV Normally open vent valve
Tab. 5.a
5.1.2 Supervisor connection
The connection to the supervisor network can be made in two ways:
• between the Ethernet port on the pumping station and the supervisor network
• via RS485 serial link between the BMS2 port on the pumping station controller and the supervisor network. In the latter case,
the communication settings need to be changed when commissioning the system.
Eth1
Eth2
28
17
J25 BMS2
J25 BMS2
Tx/Rx
Tx/Rx
GND
GND
17
J25 BMS2
Tx/Rx GND
Fig. 5.b
Zone 1 Zone 2
Zone
panel
1
Zone
panel
2
Zone
panel
12
Zone 12

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Installation notes humiFog Multizone Touch Oil-free +0300125EN rel. 1.0 28.09.2023
5.2 Distribution system
5.2.1 Drain valve management (NOL)
The pumping station manages and controls the line drain valve (NOL, normally open). The zone panel can also manage a con-
nected line drain valve.
Notice: the line drain valve must be tted at the lowest point in the water circuit and wired to the nearest electrical pan-
el (pumping station or zone panel), so that when opened, the entire system is emptied.
Case 1: Pumping station located below the distribution manifolds
Connect the drain valve near to pumping station that will control its opening.
Case 2: Pumping station located above the distribution manifolds, placed at dierent heights.
The drain valve must be connected near to the lowest distribution manifold.
Notice: the control signal for the zone 12 drain valve is output J12 NO3 on the zone electrical panel controller. See the
corresponding manual.
Case 3: Distribution manifolds located both above and below the pumping station
Connect multiple drain valves at the lowest points in the water circuit.
...
Quadro
di zona
2
Quadro
di zona
12
Quadro
di zona
11
Quadro
di zona
1
NOV
NOL
NOL
NOV NOV
Zona 1 Zona 2 Zona 11
Zona 12
Fig. 5.c
5.3 Functional diagrams - duct
The control signal to the solenoid valves comes from the zone 1 electrical panel, located near the zone 1 distribution rack.
Quadr
Quadro o
di z
di zona
ona 1
1
NOV
...
NOL
NOV NOV
Z
Z
ona 1
ona 1 Zona 12
Quadr
Quadro o
di z
di zona
ona 2
2
Quadr
Quadro o
Zona 2 Zona 12
Quadro
elettrico
di zona 1
Quadro
elettrico
di zona 2
Quadro
elettrico
di zona 12
Zona 1
Fig. 5.d
CAUTION: The maximum allowable length of the water hose connecting the pumping station to the furthest rack is
100 m on the horizontal plane and 20 m vertically, so as to limit pressure drop and ensure nominal system performance.
Notice: when making the water connections, always observe the following warnings:
• limit as much as possible the length of the ll/drain line on each distribution circuit;
• ensure a minimum slope of the piping to assist emptying during the drain cycle.
Zone 1 Zone 2
Zone
panel
1
Zone
panel
2
Zone
panel
11
Zone 11
Zone
panel
12
Zone 1 Zone 2
Zone
panel
1
Zone
panel
2
Zone
panel
12
Zone 12