MK HUMON Operating manual

ADIABATIC DUCT TYPE
HUMIDIFIER H200
EN USER AND INSTALLATION MANUAL
HUMON-EN- 2023-05

2HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 3
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200

2HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 3
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
1. SAFETY REQUIREMENTS FOR THE USER 4
2. DELIVERY CONTENT 5
3. OPERATING PRINCIPLE AND SAFETY FUNCTIONS 6
4. DESCRIPTION OF THE HUMON HUMIDIFIER 7
5. SPECIFICATION 8
6. INSTALLATION 9
7. MAINTENANCE 15
8. CASSETTE REPLACEMENT INSTRUCTION 16
9. SERVICE 17
10. CONTROL SYSTEM 18
11. DIAGRAM OF THE HUMIDIFIER OPERATING PRINCIPLE 24
12. TROUBLESHOOTING 25
13. WIRING DIAGRAM 27
14. DECLARATION OF CONFORMITY 28
15. TECHNICAL PARAMETERS FOR THE INSTALLATION OF THE HUMIDIFIER 29
TABLE OF CONTENTS
This symbol on the device indicates that electrical and electronic products
should not be discarded as unsorted household waste. Electrical and
electronic waste must be delivered to designated collection centres and
waste acceptance facilities for recovery and recycling. Improper handling
of this type of waste could have a negative impact on the environment and
human health due to potentially hazardous substances. At the same time,
your cooperation in the correct disposal of this product will contribute to the
eective usage of natural resources and help avoid negative consequences
for the environment and human health.

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
1. SAFETY REQUIREMENTS FOR THE USER
To avoid the risk of fire, electric
shock, or injury, read all the safety
instructions and warning texts before
using the humidifier.
All electrical connections must be
carried out by qualified electricians.
If the power lead is damaged, it must
be replaced by the manufacturer,
the manufacturer’s service agent or a similarly qualified
person. It is the installer’s responsibility to carry out a
complete safety and function assessment of the device.
This device may be used by children of 12 years or
above or by persons with reduced sensory capacity
or reduced physical or mental capacity, or by persons
lacking experience or knowledge, provided that they have
received instructions for safe use of the appliance or are
supervised to ensure safe use, and provided that they are
aware of the risks.
The device is not suitable for use by children. Children
must not be allowed to play with the device. Children
must not carry out cleaning or maintenance without
supervision.
This humidifier is only designed for humidity control
in ventilation air in dwelling houses and commercial
buildings. To maintain a good indoor climate, comply with
regulations, the device must never be switched o apart
from during service/maintenance or in the event of an
emergency.
The device should be operated with drinking water and
sewage drainage connections. All plumbing work must be
carried out by an authorised plumber.
The electrical equipment is tested, connected and
grounded in accordance with CE regulations. The device
must be plugged in to an electrical outlet that is earthed,
in good order and corresponds with all requirements of
electric safety.
!

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
2. DELIVERY CONTENT
The HUMON humidifier should be examined upon receipt
to ensure that no visible damage has occurred during
transport. If the device is not to be installed immediately,
it should be stored in a clean, dry area in the original
packaging. Before installing the HUMON humidifier, make
sure that the device is complete and undamaged.
1 x water supply hose (L = 1.5 m;
Ø 4 mm; two-piece adapter from
4 mm to 3/8” BSP connection);
1 x cable with a computer
connector for the mains plug
(L = 1 m);
1 x touch-type control panel with
a cable and USB connection
(L = 5 m);
1 x combined humidity-
temperature sensor T1/RH for
connection to a supply air duct
(L = 2 m);
1 x combined humidity-tempera-
ture sensor T4/RH4 for connection
to an extract air duct (L = 2 m);
1 x temperature sensor T3 for
measuring the outdoor air
temperature (L = 2 m),
1 x water drain hose
(L = 3 m; Ø 16 mm) with an adapter
and a metal clamp;
1 x connection cable with a
coupling to the mains socket
(230 VAC; L = 1 m).
Humidifier
The following components are supplied:

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
3. OPERATING PRINCIPLE AND SAFETY FUNCTIONS
HUMON is an adiabatic humidifier intended for
humidification via a ventilation duct system of small and
medium-sized spaces, such as family houses, flats, and
oices.
The purpose of the HUMON duct-type adiabatic
humidifier is to ensure continuous humidification of
supply air in the ventilation system under pre-defined
parameters. The air passing through the evaporating
material becomes more moisturised and slightly cooled
due to the adiabatic humidification process.
The device must be installed in the air supply duct of the
ventilation system inside the building. The installation
premise must be equipped with a power supply, fresh
water connection, and wastewater trap.
The humidifier operates completely independently and
switches on when the (absolute) outdoor air humidity
becomes too low, the air flow is detected and the
temperature of the inlet air before the humidifier is more
than 14°C.
The device must be switched on in standby mode to
continuously monitor air parameters and start the
humidification process on time.
The device can be used in any balanced ventilation
system.
The switching of the device is linked to the outdoor
temperature. This value is controlled by the temperature
sensor T3 that must be installed in the outdoor air
duct. The default temperature setting for triggering the
HUMON device is 120C. It can be changed in the settings,
considering the prevailing outdoor temperature, the
regional humidity, and the type of HRV unit used in the
ventilation system.
Subject to certain conditions, the HUMON device
humidifies the supplied air up to the relative humidity of
75%. The desired humidity is set by the user, not exceeding
the maximum value. The humidification intensity depends
on the outdoor air temperature and humidity in the supply
duct after the HRV unit. The relative humidity can be
additionally raised up to 30% in the supply air.
This additional moisturisation depends on the inlet
temperature, air amount, relative humidity, and outdoor
air temperature.
The integrated PTC air preheater operates when the air
temperature is lower than the set-point. If the supply
air temperature is set below the inlet temperature, the
preheater will use less energy.
The maximum moisture supply capacity is 0–3.2 kg/h
and depends on the air temperature, humidity and airflow
across the humidifier. The maximum airflow capacity of
the HUMON H200 is 500 m3/h.
The device contains heating elements that must not be
touched when hot. Before opening the door, the device
must be switched o for at least 1 minute.
Safety
Built-in PTC air preheater has all the advantages of
PTC heating technology. Thanks to the PTC eect,
the heating elements dynamically adjust their power
without exceeding a maximum temperature. A
mechanical temperature thermal protector switches the
PTC preheater o if permissible safety temperature is
exceeded.
A built-in additional temperature sensor inside the
humidifier switches o the PTC preheater if the hazardous
temperature is exceeded.
The integrated water filter in the HUMON humidifier
cleans the water, removing Legionella bacteria. The supply
water enters the evaporative media already purified. The
HUMON water filter uses ultrafiltration technology, which
is based on pressure-driven membrane technology, to
remove (colloidal) particles, sediment, turbidity, bacteria,
and viruses. The eiciency of reducing bacteria with
the ultrafiltration process is 99.9999% (Log 6). With
ultrafiltration, all dirt particles, bacteria, and viruses
are filtered, reducing biofilm growth. The final product
of ultrafiltration is clean and safe. Only fresh water can
!
In case of a power failure, the humidifier
will not start automatically after the
power has been restored. To start the
device, touch the screen (see page 21,
Table 4).
It is recommended to keep HUMON
device in standby mode all the time, as
it includes several features to maintain
the removal of bacteria from water and
air. Besides, the humidifier switches
on automatically, upon reaching the
default parameters set for the outdoor air temperature
or indoor relative humidity. Thus, a good indoor
climate and a hygienic operation of the device will be
maintained.
!

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
4. DESCRIPTION OF THE HUMON HUMIDIFIER
Housing
The housing of the HUMON humidifier is made of
aluminium zinc-coated steel sheets (reaction to fire
class A1 class, surface corrosion class C4-M/C3-H). The
humidifier door is easily accessible from the front, and
all external sensors and components are connected via
external connectors. The control PCB board, water valve
and cassette with water filter and evaporative media are
located inside the device, behind the door. The humidifier
must be connected to the ventilation system via two
external duct connectors (Ø 200 mm).
Internal construction
The internal construction has been developed to minimise
internal pressure drop, providing good humidification.
A cassette is fitted inside the HUMON humidifier,
containing the water filter and evaporative media. The
supply water passes through the filter before being
applied to the evaporative media. The supplied air passes
through the evaporative media. Humidifying occurs
through contact between the passing air and the wet
media surface. Surplus water is drained. The humidified
air then passes through the bipolar ionisation device
and enters the supply duct. The PTC preheater is only
operational when the supply air temperature falls below
the pre-set minimum temperature.
Combined humidity-temperature sensors (T1
and T4)
The supply duct sensor T1/RH1 and the extract duct
sensor T4/RH4 measure the relative humidity and
temperature in the ducts. T1/RH1 must be installed in the
supply air duct after the HUMON device, and T4/RH4
must be installed in the extract air duct from the treated
rooms before the HRV unit. These sensors measure and
control indoor humidity and temperature.
Temperature sensor (T3)
T3 is an NTC-type temperature sensor to be installed in
the intake air duct between the outdoor air intake and
the HRV unit. This sensor determines when the HUMON
humidifier must be switched on or o.
Bipolar ionisation device
The ionisation device remains switched on continuously
if the HUMON humidifier is in operation mode. The ion
generator creates negative and positive ions to maintain
a clean and fresh air supply with significantly less viruses
and bacteria.
Touch-type control panel
The HUMON humidifier is equipped with a wired control
panel. It is used to set all the required parameters: the
humidity and temperature in the supply duct, the desired
humidity in the room to be reached, and the outdoor air
temperature triggering the device. The control panel also
displays sensor readings, alarms and service needs.
be used. No water is recycled inside the humidifier. The
evaporative media is completely dry if there is no demand
for humidification.
The combined humidity-temperature sensor T1/RH1 is
used to measure the relative humidity and temperature
in the supply duct after the HUMON device. It helps
to achieve the best operation algorithm to prevent
condensate formation in the ducts under normal
conditions of use.
Anti-legionella protection. When the air humidifier is in
standby mode, the water valve will automatically open
every 72 hours and flush the humidifier pipes for 1 minute
to prevent Legionella from occurring.
The water valve is protected against dirt with an inside
mechanical filter.
An air purification device—a bipolar ionisation device—
is located after the evaporative media to clean the air
from viruses and bacteria. The bipolar ionisation device
neutralises odours, destroys VOCs, kills pathogens
(bacteria, viruses, moulds), and helps to control allergens.

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
5. SPECIFICATION
HUMON humidifier scheme
Table 1. Technical data
Description Parameters
Dimensions WxHxL 363 x 275 x 354 mm
Air duct connections Ø200 mm
Humidification capacity 0 – 3,2 l/h
Rated voltage/frequency 230 V / 50 Hz
Rated current 8,1 A
Rated power, total 1100 W
Average annual consumption 100–800 kWh (depending on set points)
Maximum water consumption 5–7 l/h (depending on set points)
Water supply connection ¾ internal thread with a connection to a 4 mm tube
Water drain tray connection ½ thread adapter to the 16 mm spiral drainage tube
Operating air volume 80–500 m3/h
Device weight 9,5 kg
Water quality Hardness < 9 dGH, TDS < 350 ppm

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
The positioning of the HUMON device
must comply with the electrical safety
legislation of the individual countries.
Check what rules apply in your country.
The device should be installed with
an earth fault breaker. All electrical
connections must be carried out by a
qualified electrician.
It is important for the main plug to
be accessible for servicing when the
device is fully installed.
6. INSTALLATION
Depending on the air duct connections, the right or left
side must be selected for the humidifier inspection.
Left inspection side: look at the humidifier door – the
air passes from right to left. The sensor connectors are
located on the right side, on the side wall near the hinges.
Right side inspection: look at the humidifier door – the
air passes from left to right. The sensor connectors are
located on the left side, on the side wall near the hinges.
The HUMON humidifier must be installed in the supply air
duct as close as possible to the HRV unit. The minimum
distance to the available bends is 200 mm.
The HUMON device must be installed with suitable space
for servicing and maintenance, such as replacing the
humidifier cassette and cleaning the drain tray and the
ion generator. See Fig. 2 for the minimum requirements;
note that they only consider service needs.
All electrical parts of the device must be easily accessible
when the HUMON humidifier is fully installed.
Fig. 1. The inspection side of the humidifier
!
Shortening or lengthening of the water
supply hose (Ø 4 mm) is forbidden! It
must remain at the factory length of
1.5 m.
!
Left inspection side
H200WFL
Right inspection side
H200WFL
Ionization device Ionization device
PTC heater PTC heater
Air direction Air direction
Humnidification
cassette
Humnidification
cassette

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
Fig. 2. Recommended maintenance area
Fig. 3 Installed and levelled HUMON humidifier
Signal cables must be at least 10 cm away from the power
cables and should not be laid together during installation.
Keep at least 130 mm clear space at the bottom of the
device and 360 mm in front of the device for the door
opening and servicing.
Install the HUMON device horizontally in the duct
system. The humidifier must be hung perfectly levelled
to guarantee good water drainage (see Fig. 3). A slight
slope can be left towards the water outlet for complete
drainage (there is also a slope for drainage inside the
drain tray).
The HUMON humidifier must be
installed perfectly levelled, which is
important because of the drain tray
inside the device.
!

10 HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 11
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
Install the temperature and humidity sensor T1/TH1
into the air supply duct as closely as possible after the
HUMON humidifier. The recommended distance from the
humidifier is 150–1,000 mm. Insert the plug of the T1/TH1
sensor into the T1/RH1 socket on the humidifier housing.
Install the temperature and humidity sensor T4/RH4 into
the air extract duct up to the HRV unit. The sensor must
receive the correct extract air data. Insert the plug of the
T4/TH1 sensor into the T4/RH1 socket on the humidifier
housing.
The temperature sensor T3 must be installed in the
duct of the air entering the system from the outside.
Only after the T3 sensor has read the correct outdoor
air temperature data can the desired air humidification
parameters be set. Insert the plug of the T3 sensor into
the T3 socket on the humidifier housing.
Mount the control panel on the wall or other surfaces near
the humidifier. Insert the control panel plug into the USB
socket on the humidifier housing.
Insert the main plug into the socket. Check the voltage.
The control panel should switch on. Wait 5 seconds and
touch the screen to start using it. After 5 minutes, briefly
open the door. The green power LED must switch on. This
means the humidifier works well.
Each time the device is switched on, the PTC heater is
automatically activated for 30 seconds, and the water
valve is opened for 60 seconds. The sensors must
start reading the temperature and humidity changes. If
no changes occur, the humidifier will be stopped with
alarm readings after a specific time, and the fault will
be displayed in the service menu list. Try switching the
humidifier o and on again from the main power supply.
After 2 minutes of the test run, check the entire system
for any water supply or drainage system problems.
After 1 hour, recheck the entire system for leaks in the
water supply tubing and drainage system.
The drain hose must be connected
to the sewage drainage. The system
must be open-type, depressurized
and suiciently lowered to allow the
water to flow out of the drain tray.
All condensate drain connections
must be correctly installed.
Incorrect trapping of the waste
water can result in flooding
within the humidifier drain tray
and consequent flooding of the
immediate indoor area.
The drainage system must not be
connected directly to the municipal
waste water system.
The humidifier housing is equipped with fastening holes
suitable for fastening the device to dierent brackets.
It can also be attached to M8 studs. The weight of
the humidifier is about 9.5 kg. Before screwing in the
humidifier housing, level it correctly so that the water
in the drain tray runs out through the outlet. Only then
connect the ventilation ducts.
Connect the black 4 mm hose connection with the 3/8“
adapter to the mains water supply using a 3/8“ water
connection tap with a filter inside.
Make sure that the water pressure in the system is from
1.5 to 2.5 bar.
The HUMON humidifier is supplied with a 16 mm drain
hose with a length of 3 m. Other drain hose lengths can
be ordered. See Fig. 5 and 6 for installation examples. Do
not use tools to screw the water connection to the drain
tray nozzle; only use your hands for this (wear gloves).
!
!
In case of a power failure, the
humidifier will not start automatically
after the power has been restored. To
start the device, touch the screen
(see page 21, Table 4).

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
Fig. 4. HUMON humidifier installation scheme
Fig. 4.1. Connecting the air ducts and fittings to the
humidifier (it is forbidden to screw the self-tapping
screws on the horizontal and vertical axes – this may
damage the internal parts of the humidifier; the self-
tapping screws must be screwed in at a 45-degree angle
from the horizontal and vertical axes)
!
!

12 HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 13
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
Fig. 5. Drainage installation schemes
! !
!
Do not use any tools to fasten the
water connector, do it by hands
only.
!

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
Fig. 6. Water connection scheme
Do not use any tools to fasten the
water connector, do it by hands
only.
Shortening or lengthening of the
water supply hose (Ø 4 mm) is
forbidden! It must remain at the
factory length of 1.5 m.
!
!
!

14 HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 15
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
7. MAINTENANCE
After the installation of the HUMON device, an overall
inspection should be carried out. This should include
inspecting the inside of the device and removing debris
and tools which on-site contractors may have left behind,
a sensor connection check, a water supply tubing check
and a drain hose installation check. Close the door,
ensuring that the door sealing gaskets have not been
damaged after installation.
It is recommended to carry out routine maintenance of
the HUMON device 2–3 times per year at the beginning
and end of the autumn/winter season.
Checking the preheater
Check that the PTC heater is clean and that the heating
element is not clogged. Clean the heater and pump if
necessary. Before checking the PTC, it is necessary
to remove the evaporation cassette. Note: first,
disconnect the water supply tube. (See the CASSETTE
REPLACEMENT INSTRUCTION).
Checking the air ion generator
The ion generator needs to be thoroughly cleaned of
dust, as dust can reduce the amount of ions produced in
the air. Use a soft brush. Do not use water! Do not bend
Before performing any inspection
work, make sure that the device is
unplugged from the electric power
supply.
or break the generator carbon brush! Before checking
the generator, it is necessary to remove the evaporation
cassette. Note: first, disconnect the water supply tube.
(See the CASSETTE REPLACEMENT INSTRUCTION).
Checking the evaporation cassette
The evaporation media must not be cleaned! The
cassette must be replaced if the RH% measured by the
air duct sensor T1/RH1 does not rise above 45 % for a
prolonged period. The service alarm will be shown on
the control panel display after a specific time, based on
the number of valve opening cycles. The service life of
the media depends on the amount of dissolved minerals
in the water (the water hardness indicates this). If the
water hardness is higher than 9 dGH, the service life will
be shorter than the standard one. During the cassette
replacement process, it is necessary to check and clean
the drain tray and the connection hose. The cassette
holder is removable from the drain tray
and the tray is cleaned with a wet cloth or a soft brush,
using soap or another stainless steel cleaner (be careful
with solvents that can damage the drain hose).
The HUMON water filter is located inside the cassette.
Its service time is determined based on the amount of
sediments in the water. The service indication is valid for
water with a TDS value of less than 350 ppm. You can
learn about your area’s water quality by taking a water
quality test at the relevant water testing laboratory. If its
TDS value is higher than 350 ppm, installing a sediment
filter or a reverse osmosis water filter is recommended.
The estimated service time is shorter if the water values
are higher than in Table 1 in Chapter 5.
The HUMON cassette must be replaced at least every 3
years or when the service indication appears on display.
If only the evaporating media needs to be replaced, it can
be replaced separately.
!

16 HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 17
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
8. CASSETTE REPLACEMENT INSTRUCTION
• Unplug the HUMON humidifier from the main supply
socket.
• Disconnect the water supply.
• Open the humidifier door.
• See Fig. 7. Disconnect the cassette from the water supply
by pushing the clamp on the water supply connector and
pulling the hose simultaneously.
• Pull out the cassette from the HUMON humidifier using
the integrated handle. Beware of any water leakage from
the internal cassette components.
• Clean the inside of the HUMON humidifier with a wet
cloth if necessary. Be careful when cleaning near the ion
generator.
• Clean the drain tray by first removing the internal
cassette holding element. Check that the drainage outlet
is clean.
• Insert a new cassette or remove the housing screws with
Replacing the cassette requires
specific knowledge. Contact an
installer in case of any doubts about
replacing the cassette.
a screwdriver and replace only the evaporating media.
• Push in a new cassette to the back wall.
• Connect the water pipe to the water supply connection
in reverse order to the one shown in Fig. 7.
• Close the door and open the water supply valve.
• Insert the plug into the socket. The HUMON humidifier
must start filling the new filter with water and check all the
sensors. After 1 minute, the HUMON humidifier is ready to
operate. Follow the steps for starting and checking the
humidifier as described in Chapter 6 ‘Installation’.
Fig. 7 Water tube disconnecting scheme
!

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
9. SERVICE
Table 2. A list of the HUMON humidifier spare parts
Ref.
No Description Product code for ordering
1 HUMON cassette set with the water filter DRK20101 (WFR), DRK201011 (WFL)
2HUMON humidification media 70002
3HUMON water filter set 70006
4PTC heater with connectors and brackets DRK20104 (WFR), DRK201041 (WFL)
5PTC heater 70023
6 Water valve set with wires VOZTVDW12
7Ion generator with the connector 70021
8 T1/RH1 temperature and humidity sensor 70030
9T4/RH4 temperature and humidity sensor 70033
10 T3 outdoor air sensor 70032
11 MK HUMON control panel 70029
12 Main control PCB board 70028
13 Internal T2/RH2 temperature and humidity sensor 70031
14 Airflow sensor 70044

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HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
An overview of the internal components of the HUMON humidifier
Control panel view
10. CONTROL SYSTEM
• During operation, the display in sleep mode always
shows the actual supply air temperature and humidity.
The information is provided for the T1 sensor data.
• You can see the temperature and humidity set-points
and the main menu buttons for 5 seconds by touching
the screen once

18 HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 19
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
Icon Description
Humidifier off button
Settings menu
Live operation graph
Service and fault list
Confirmation button
Cancel button
Up and down selection buttons
Temperature markers on all displays
Humidity marker on all displays
Back to the main menu button
Error delete button in the service and fault list. This button reboots the controller but leaves the
error displayed in the list
Toggle the button for another display
Advanced user internal menu selection buttons for the sensor calibration
Time and date settings
Advanced user-locked menu
Error alert icon in the live operation graph and the service and fault list
Temperature sensor calibration. Manual calibration of the sensor readings with a calibrated
temperature probe using the comparison mode
Deletion of errors and warnings from the controller and control panel. All data are deleted
permanently
Humidifier cassette replacement. After inserting a new cassette, the meter must be restarted. Click
the icon to confirm the installation of the new cassette
Supply water pressure settings in the locked menu
Outdoor air temperature settings in the locked menu for triggering the humidifier
Indoor humidity setting in the locked menu, allowing to set the desired humidity level to be reached
in the room
Table 3. Icons used on the control panel

20 HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200 HUMON-EN- 2023-05 21
HUMON ADIABATIC DUCT TYPE HUMIDIFIER H200
Icon Description
Temperature sensor T3 is deactivated. The humidifier start-up is triggered by the airflow sensor or
by the external dry contact from a switch or the HRV unit
Temperature sensor T4 is deactivated. The indoor humidity demand is not monitored
T_set temperature maintenance based on the outflow temperature from the HRV unit is deactivated.
The temperature set-point will be read from the main menu setting
Temperature sensor T3 is activated. The outdoor air temperature triggers the humidifier start-up
Temperature sensor T4 is activated. The indoor humidity demand is monitored based on the
humidity settings in the advanced user-locked menu
T_set temperature maintenance based on the outflow temperature from the HRV unit is activated.
T1 will be maintained at the level of the outflow temperature from the HRV unit insofar as it is
manageable by the heater power
If a reverse osmosis filter is installed in the water supply line before the humidifier, the service time
of the integrated water filter increases. If the osmosis filter is available, the RO button should be
grey-white. If the osmosis filter is not available, it should be red
Reset the factory settings
Outdoor air temperature readings
Indoor temperature readings
Temperature sensors readings
Temperature sensor error. The alarm will be displayed in the fault list. The date, time and fault code
will be displayed on the control panel
PTC heater demand. This icon indicates the actual electricity demand
Humidification demand. This icon indicates the actual water demand
Humidification process error. The alarm will be displayed in the fault list. The control panel will
display the date, time and fault code. The icon will flash until the error is cleared. The icon will light
continuously when continuous water flow trough the valve is detected
Indoor sensor error. The alarm will be displayed in the fault list. The date, time and fault code will be
displayed on the control panel
Error or fault icon in the top data bar on the control panel display
Humidification demand. This icon indicates that the humidification process is activated and running
Airflow. This icon indicates that the airflow in the system is sufficient to operate the humidifier
PTC heater demand. This icon indicates that the heater is activated and is running
Communication error between the control panel and the control PCB board
Table 3. Icons used on the control panel