Direct humidification

Advanced solutions for industrial

and commercial environments
Direct in-room humidification

Relative humidity can be controlled using systems installed in the ducting or directly
in the room. For retrofits without an adequate air distribution system for traditional
ducted humidification, a direct in-room solution is more effective, reducing costs and
avoiding the need for major building work.

In-room adiabatic humidification

CAREL offers a wide range of in-room humidifiers, ideal for both small CAREL adiabatic humidifiers
have different technologies and
and large spaces. Simple and flexible installation make them perfect configurations, yet all share the same
for retrofits. purpose: to create water droplets that
Correct installation of the distribution system is essential to ensure are as small as possible, so as to reduce
the absorption distance in the air.
uniform humidification and avoid condensation on nearby objects. The water evaporates spontaneously,
obtaining the dual effect of increasing
the relative humidity and lowering the
air temperature due to the evaporative
cooling effect (each kg of evaporated
Solutions for industry and water produces a cooling effect of
around 690 W).
comfort
The chosen solution is always a
In many industrial processes, including compromise between technical
printing, tobacco, plastics and textiles, performance, surrounding conditions
production capacity and final product and return on investment.
quality are considerably affected by
relative humidity, which needs to be In-room isothermal humidification
precisely managed and monitored inside
The CAREL range of isothermal
the production plant.
humidifiers guarantees total hygiene,
Public and private spaces need the right
through the use of steam. Isothermal
humidity to ensure personal comfort.
solutions are especially suitable for tight
spaces. Steam is in fact easily absorbed
by the surrounding air, increasing
relative humidity without significantly
affecting the temperature.

Absorption distance Airborne dust Easy installation

In-room humidification requires a The right level of relative humidity CAREL in-room solutions guarantee
suitable amount of free space for helps reduce airborne dust, avoiding easy installation without major work to
absorption, which must be carefully problems for both the production the existing structure.
evaluated during the design phase. process and operators.
 Adiabatic or isothermal solution
The table below summarises the main the intersection represents the possible The radial charts shown below compare
features of CAREL’s solutions. technical solutions. Where multiple the main key points of the different
By identifying the required solutions are possible, the choice can be solutions.
humidification load on the horizontal made considering other requirements.
axis and moving upwards to the
available free height (value on the left),

H - Free height
between the humidifier
(distribution system)
and the highest object
(m) at 20°C and 50% r.H. 1 2 3 4 5 6 1 2 3 4 5 6 4
humiFog - nozzles (4 l/h)
6.5
humiFog direct (4 l/h)

0.5-1 m
1 2 3 4 5 6 1 2 3 4 5 6 humiFog - nozzles (2.8 l/h) 4

Energy consumption W/(kg/h)

5.5
humiFog direct (2.8 l/h)

H
1 2 3 4 5 6 1 2 3 4 5 6 humiFog - nozzles (1.45 l/h) 4
4.5
humiFog direct (1.45 l/h)
4 MC multizone (2.7 l/h) 116
humiDisk 35
humiSonic 80
2 humiSteam 750
1 2-4 3-5 1 2 3 4 5 750
gaSteam
heaterSteam 750
Humidifier flow-rate
10 20 30 40 50 100 200 300 400 500 1000 (l/h)

Key
humidifier size: isothermal red, adiabatic blue
minimum humidifier capacity
1-1 when on the same line, these identify the minimum and maximum humidifier capacity respectively

Guaranteed hygiene
All CAREL humidifiers, except those with immersed electrodes, can be combined with
a reverse-osmosis water treatment system to reduce maintenance requirements and
ensure maximum hygiene.
The WTS (Water Treatment System) is available in the Large 160-1200 l/h (left) and
Compact 12-80 l/h (centre) versions. The UV lamp (right) can be added to eliminate any
bacteria present in the water.

Key

absorption zone
water flow-rate commercial residential industrial
distance management
 room applications single
Adiabatic range

Humidification and evaporative cooling with very low operating costs. The fill valves

absorption distances must be carefully evaluated to avoid condensation.

drain valves room probe

air inlet
HumiFog multizone direct (UA) blower
Technology: pressurised water humidifier

air outlet

>80 l/h
electric hydraulic
direct box direct box

2≥ 4 m 1 ≥ 5 m WTS*: water
demineralized drain
water
up to 6
main drain valve
independent zones

Probes
DPP*: temperature DPW*: temperature and
and humidity humidity probe for civil
Suitable for managing medium and high Operating principle probe for industrial environments
environments
humidification loads. The possibility of The installation configuration includes
up to six independent zones, and a wide a main water line kept at high pressure
range of sizes (up to 1000 l/h), make this by the pumping station. The modulation Easy
solution ideal for retrofits in industrial steps are connected to the pumping installation
environments, where traditional ducted station using the direct boxes (water
humidification is not possible. and electric), used to interface humiFog Precision Capacity
Multizone to the blowers.
Energy Easy absorption
saving

Distribution layouts

Layout 1 - Installation: simple. Flexibility: average Layout 2 - Installation: simple. Flexibility: average
Suitable for installations where the length of the water line between the Suitable for large installations where water can be drained at the
fill and drain valves is less than or equal to 30 m. end of the line.

24 V 230 V 24 V 230 V

Layout 3 - Installation: complex. Flexibility: high Layout 4 - Installation: complex. Flexibility: high
Suitable for installations where control is required over each blower, Suitable for installations where high flexibility and precision are
enabling and disabling them as needed. required.

24 V 230 V

24 V 230 V

water line 230 V power line 24 V power line

 OVERVIEW DRAWING humiFog Direct

HumiFog direct (UA)

Technology: pressurised water humidifier
WTS*:
demineralized
water

20 to 80 l/h probes
DPP*: temperature DPW*: temperature
and humidity and humidity probe
2≥ 4 m 1 ≥ 5 m probe for industrial for civil environments
environments
up to 2
independent zones

Designed for medium-sized industrial Control cabinet Easy

environments, combining maximum installation
The powerful and high-performance
reliability with low operating costs. pumping station can deliver water
The electronic valves fitted inside the Precision Capacity
at a constant pressure of 70 bars, for
cabinet are used to manage the blowers maximum performance with very low
and make the system easier to install, energy consumption (4 W/(kg/h)). The Energy Easy absorption
adapting to any context, even the most system can manage two different zones, saving
complex ones. The unit can be managed with different set points.
on a local network via webserver, Capacity modulation is managed
and comes with the most common using the PWM principle (pulse width
communication protocols: Modbus®, modulation), for precise and reliable
Bacnet™ via Ethernet and RS485. humidity control. Two pumping stations
are available, 40 l/h and 80 l/h.

Absorption heights with 1.45 l/h nozzles depending on the set point
RH 1.45 l/h nozzles
80 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5
70 5 5 5 5 5 5 5 5 5 5 5.5
60 5 5 5 5 5 5 5 5 5 5 5
50 4.5 4.5 4.5 4.5 4.5 4.5 5 5 5 5 5
40 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5
30 4 4 4 4 4 4 4 4 4 4 4
15 16 17 18 19 20 21 22 23 24 25
Temperature

Absorption heights with 2.8 l/h nozzles depending on the set point
RH 2.8 l/h nozzles
80 7 7 7 7 7 7 7 7 7 7 7
70 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5
60 6 6 6 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5
50 5.5 5.5 5.5 5.5 5.5 5.5 6 6 6 6 6
40 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5
30 5 5 5 5 5 5 5 5 5 5 5
15 16 17 18 19 20 21 22 23 24 25
Temperature
 OVERVIEW DRAWING mc multizone

MCKPT*: pressure
valve sensor at end
MCKM*:
of line MCK1AW0000: nozzle
pressure gauge
mc multizone (MC) MCKDVWL: drain
solenoid valve at end at end of line
assembly kit

Technology: compressed air humidifier of line

MCA:
nozzles

MCFILAIR01: air MCFILOIL01: oil

60 to 230 l/h filter separator

Air supply
2≥ 4 m 1 ≥ 3 m

up to 6
independent zones Water supply

MCKUV00000: UV
MCFILWAT05: water sanitising lamp
filter

Probes
Compressed air and water humidifier, Control cabinet DPP*: temperature DPW*: temperature
the ideal solution when a compressed The pumping stations are available in and humidity probe for and humidity probe
industrial environments for civil environments
air system is already available in the the 60 l/h or 230 l/h versions, while the
building, as is often the case in the Master/Slave configuration can be used
industrial sector. The main target to manage up to 6 independent zones.
applications are printing, textiles, wood
industries and food cold stores. Easy
The humidifier can communicate via installation
Modbus®, LON, TCP/IP and SNMP using a
Precision Capacity
special additional card.

OVERVIEW DRAWING humiDisk65 Energy Easy absorption

saving

Probes
DPP*: temperature and
humiDisk (UC) humidity probe for industrial
environments
Technology: spinning disk humidifier
DPW*: temperature and
humidity probe for civil
environments

1 to 6,5 l/h
water
supply
2≥ 1,5 m 1 ≥ 2 m
SEL

PRG
mute

MCKSUV*: UV
sanitising lamp UCQ065D*:
1 control panel
water
drain power supply

Stand-alone spinning disk humidifier The humidifier, in fact, thanks to IPX4 Easy
available in sizes from 1 l/h to 6.5 l/h. protection, can operate across a wide installation
Simple and efficient solution for cold range of temperature and humidity
stores or places where precision is not conditions (0 to 35°C, 0 to 100% RH) Precision Capacity
required and operating conditions are
extreme.
Energy Easy absorption
saving
 OVERVIEW DRAWING humiSonic
UU0*R*: humiSonic direct
humiSonic direct (UU)
Technology: ultrasonic humidifier

water
drain inlet
water
2 to 8 l/h ACKF*: water
filter

2>2 m 1 >3 m

1 independent
zone

Easy
Ideal for small humidification loads for small- and medium-sized mission-
installation
(0 to 20 l/h) and where compactness, critical applications. Available in 2-4-6
low noise and short absorption and 8 l/h sizes with 0 to 100% capacity Precision Capacity
distances are required. Ease of droplet modulation thanks to PWM technology.
absorption and low noise make it Energy saving is guaranteed, with power
ideal for comfort applications in public consumption of less than 80 W/(kg/h) Energy Easy absorption
places. Its compact dimensions and saving
high performance mean it can be used

Humidification load required, based

on the volume of the room or the air
flow-rate

Outside
Floor area Humidifier load
air flow-
(m2) (kg/h)
rate (m3/h)

35 101.5 1
50 145 1.5
70 203 2
90 261 2.6
100 290 2.9
150 435 4.4
200 580 5.9
250 725 7.3
300 870 8.8
350 1015 10.2
400 1160 11.7
500 1450 14.6
600 1740 17.6

The humidification load is estimated based Evaporative cooling

on the amount of outside air introduced into Atomisation of water naturally lowers the air temperature, saving
the room, considering the following winter
conditions: on cooling system power and humidifying at the same time. In
• Outside air conditions: -9.9 °C/44% rH; winter, however, if there is no thermal load, the heating system
• Set point conditions: 22 °C, 55% rH
needs to provide heat in order to counteract the evaporative
The conditions vary from region to region.
Contact Carel personnel for a customised effect.
evaluation.
Isothermal range

High absorption efficiency and guaranteed hygiene without requiring additional

components, thanks to the use of steam. OVERVIEW DRAWING heaterSteam

heaterSteam (UR)
Technology: heater humidifier

Easy
2 to 80 l/h installation

Precision Capacity
2> 2 m 1 > 3 m
condensate drain steam transfer

1 independent Energy Easy absorption

zone saving

Ideal for installations with low and It can operate on demineralised water so
medium humidification loads, as to drastically reduce the frequency of
where high precision, reliability, low maintenance.
maintenance and hygiene are required, The humidifier can be managed on a
water drain
and where the free height available for local network via webserver, and comes
supply water power supply
absorption is limited. with the most common communication
Modulation with PWM technology protocols: Modbus® and Bacnet™ on
(0 to 100%), Master/Slave function for up both serial and Ethernet ports; CAREL
to 20 units, and electronic protocol on BMS serial port. Probes
safety systems for humidifier operating
DPP*: temperature DPW*: temperature
flexibility and complete reliability. and humidity and humidity probe
probe for industrial for civil environments
environments

UE UR
humiSteam (UE)
Technology: immersed electrode humidifier

Easy
1,5 to 130 l/h installation

Precision Capacity
2> 2 m 1 > 5 m

1 independent Energy Easy absorption

saving
UE UR
CH UG
This is the ideal solution for low and It can only operate on mains water, and
medium humidification loads, where the cylinders are easy to replace or open
high precision is not required but and descale (optional cylinder model). Steam blowers
hygiene is essential. The software The humidifier is designed to allow CAREL steam blowers are available
automatically manages the humidifier these to be replaced very quickly. in two versions, depending on
according to the type of feedwater, so as humidifier capacity. The distributor on
to reduce the frequency of maintenance. the left (VSDU0A003) can handle up
to 18 kg/h, while the one on the right
(VSDBAS0001) can handle up to
 flue gas

supply water electrical panel

with display

water level
sensor
gaSteam (UG)
Technology: gas-fired humidifier heat
exchanger
efficiency up to
96%

water drain
gas supply
45 to 300 l/h
drain water filter gas burner

2> 2 m 1 > 5 m
Probes
1 independent DPP*: temperature DPW*: temperature
zone and humidity and humidity probe
probe for industrial for civil environments
environments

Suitable for industrial applications where serial and Ethernet ports; CAREL protocol
it is cost-effective to exploit the low cost on BMS serial port. Specific models are Easy
of gas compared to electricity. available for outdoor installation (IAS installation
Installation requires qualified personnel, 12-94) to avoid having gas sources inside
applicazione in condotta
OVERVIEW DRAWING compactSteam
due to the use of gas as the energy the building. Precision Capacity
source. It can operate on demineralised water so
The humidifier can be managed on a as to drastically reduce the frequency of
local network via webserver, and comes maintenance. Energy Easy absorption
saving
with the following communication
protocols: Modbus® and Bacnet™ on
scarico condensa trasporto vapore

compactSteam (CH)
ADC*: applicazione a parete
Technology: immersed electrode humidifier umidostato

Easy 30%
1,6 to 3,2 l/h installation

Precision Capacity
2> 1,8 m 1 > 1,5 m
scarico acqua

1 independent
carico acqua Energy elettrica
alimentazione Easy absorption
saving

Ideal for low loads, and available with

both built-in blower and wall-mounted
blower.
It can only operate on mains water, and
45 kg/h. For higher humidifier the cylinders are a normal spare part for
capacity, several blowers can be replacement, following the build-up of
combined together, according to scale inside. The humidifier is designed
the steam outlets available on the to allow these to be replaced very
humidifier. quickly. Steam blower
Flush-mount model (VRDCH*)
Services

CAREL offers a wide variety of services, ranging from technical consultancy in the
design stage, to supervision systems for site monitoring and management

Local supervision
Webserver
The built-in webserver allows a simple
internet browser to configure and
monitor the entire humidification
system from a PC or tablet, connected
to the local network. The webserver is
available on the following humidifiers:
heaterSteam, gaSteam, humiFog Direct.

Boss
Boss is the CAREL range of local
supervisors. Ample configuration
flexibility, customisation of maps,
integration of Bacnet™, Modbus®
and LonWorks® protocols, and a
humidification plug-in, guarantee ease
of use and continuous monitoring of the
humidified space.
Boss and boss mini differ regarding the
number of devices they can manage,
300 and 50 respectively. Variable log
List of connected devices

SNMP
Remote supervision
tERA
tERA is the new CAREL cloud platform communication channel to use for the
for site management and monitoring. system: the platform uses either a UMTS
wireless channel or Ethernet line, with
The tERA subscription offers simple and
secure and reliable solutions.
immediate system connectivity.
Users can freely choose which

tDisplay
Designed for the end user, this allows
simple remote control of connected
devices, signals any alarms, in the same
way as if the user were physically in front
of the unit.

tService
tService is the tERA platform service
intended for service centres. tService
makes maintenance faster and more
efficient, with a ready-to-go remote
control solution for service centres.
Functions available on activating
tService:
• Read and write variables in real time;
• Alarm management with notification by
email;
• Reports and graphs with up to 300
variables;
• Live trends.

Other services
Service Part number Humidifier type
Technical support and site inspection -00PSTS000 Valid for all humidifiers
Training on CAREL products -00TRNG000 Valid for all humidifiers
Kick off meeting -00COMMKF0 Valid for all humidifiers
Commissioning -00COMM000 Valid for all humidifiers
Commissioning + Cloud Connectivity -00COMMS00 Valid for heaterSteam and gaSteam
Documentation available

+3000193EN - 1.1 - 15.11.2019

Product P/N-language Product P/N-language
WTS Large +0300016IE; +0300016F; humiSonic Direct +0300063IT; +0300063EN;
+0300016SP; +0300016C; +0300063FR; +0300063DE;
+0300016R; +0300016SV +0300063ES; +0300063PT;
+0300063RU; +0300063SV
compactSteam +030222070 - Italian/English;
+030222071 - French/German;
+030222072 - Spanish;
WTS Compact +0300017IE; +0300017FD;
+030222074 - Swedish
+0300017ES; +0300017CS;
+0300017RU; +0300017SV;
humiSteam +0300040IT; +0300040EN;
+0300040FR; +0300040DE;
humiFog Multizone +0300067IT; +0300067EN;
+0300040ES; +0300040PT;
+0300067FR; +0300067DE;
+0300040RU; +0300040SV;
+0300067ES; +0300067RU;
+0300040ZH; +0300040ET;
+0300067ZH
+0300040FI
humiFog Direct +0300073IT; +0300073EN; heaterSteam +0300075IT; +0300075EN;
+0300073FR; +0300073DE; +0300075FR; +0300075DE;
+0300073ES; +0300073RU; +0300075ES; +0300075PT
+0300073SV;
MC +030221980 - Italian;
+030221981 - English; gaSteam +0300090IT; +0300090EN;
+030221982 - French; +0300090FR; +0300090DE;
+030221983 - German; +0300090ES; +0300090PT
+030221984 - Spanish;
+030221987 - Dutch
humiDisk +030222020 - Italian/English;
+030222021 - French/German;
+030222022 - Spanish/English;
+030222023 - Russian

IE: Italian/English FR: French RU: Russian

FD: French/German DE: German SV: Swedish
SP: Spanish/Portuguese ES: Spanish ZH: Chinese
IT: Italian PT: Portuguese ET: Estonian
EN: English CS: Czech FI: Finnish

Headquarters ITALY For more information

CAREL INDUSTRIES HQs CAREL Poland - www.carel.pl CAREL Italy - www.carel.it
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FarrahVale Controls & Electronics Ltd.
CAREL U.S.A. - www.carelusa.com

To the best of CAREL INDUSTRIES S.p.A. knowledge and belief, the information contained herein is accurate and reliable as of the date of publication. However,
CAREL INDUSTRIES S.p.A. does not assume any liability whatsoever for the accuracy and completeness of the information presented without guarantee or
responsibility of any kind and makes no representation or warranty, either expressed or implied. A number of factors may affect the performance of any products
used in conjunction with user’s materials all of which must be taken into account by the user in producing or using the products. The user should not assume
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and handling of CAREL’s products. The Information provided herein does not relieve the user from the responsibility of carrying out its own tests, and the user
assumes all risks and liabilities related to the use of the products and/or information contained herein. © 2019 CAREL INDUSTRIES S.p.A. All rights reserved.