Pego EASYSTEAM ES-MINI User manual

REV. 01/04
Use and maintenance manual
READ AND KEEP
REV. 02-19
ENG
IMMERSED ELECTRODES
HUMIDIFIERS
EASYSTEAM
ES-MINI

Page 2 Rev. 02-19
USER MANUAL
Thank you for choosing a PEGO EASYSTEAM ES-MINI immersed electrodes humidifier.
The complete reading of this manual will allow you to perform a correct installation and a better use
of the machine. It is therefore advisable to keep this manual in a place adjacent to the humidifier for
any maintenance operations or to modify its operation.
How to read the manual.
To facilitate reading, graphic indications have been inserted with the following meanings:
Indicates a note that require careful reading.
Indicates the operations to be scrupulously performed to avoid damage to the humidifier,
injury to persons or malfunctions.
Indicates the operations not to be performed to avoid damage to the humidifier, injury to
persons or malfunctions.
Indicates a suggestion.
Indicates to contact the PEGO after-sales service center indicated on the back of this
manual.
Instructions for disposal:
The humidifier is made up of metal parts and plastic parts. In reference to European Union directive
2012/19/EC issued on 4 July 2012 and the related national legislation, please note that:
A. WEEE cannot be disposed of as municipal waste and such waste must be collected and
disposed of separately.
B. The public or private waste collection systems defined by local legislation must be used. In
addition, the equipment can be returned to the distributor at the end of its working life when
buying new equipment.
C. The equipment may contain hazardous substances: the improper use or incorrect disposal of
such may have negative effects on human health and on the environment.
D. The symbol (crossed-out wheeled bin) shown on the product or on the packaging and
on the instruction sheet indicates that the equipment has been introduced onto the market
after 13 August 2005 and that it must be disposed of separately.
E. In the event of illegal disposal of electrical and electronic waste, the penalties are specified
by local waste disposal legislation.

Rev. 02-19 Page 3
USER MANUAL
INTRODUCTION
Page 5 1.1 Generality
Page 6 1.2 Warranty conditions
Page 7 1.3 Functioning principle
Page 9 1.4 ES-MINI Series humidifiers identification codes
Page 9 1.5 ES-MINI Series humidifiers technical data
Page 10 1.6 Overall dimensions
Page 10 1.7 Identification data
Page 10 1.8 Standard equipment
INSTALLATION
Page 11 2.1 Main installation warnings
Page 12 2.2 Installing the ES-MINI series humidifier
Page 16 2.3 ES-MINIseries humidifiers safetydevices and power supply electric connections
Page 16 2.4 ES-MINI series sensors and control signals connections
Page 22 2.5 HUM2 electronic board digital inputs
Page 22 2.6 HUM2 electronic board digital outputs
Page 23 2.7 TA Inputs for measuring current absorption
Page 23 2.8 Net configuration with Modbus-rtu protocol
Page 23 2.9 Board power supply
Page 23 2.10 NANO EasySTEAM Display for Master HUM2 electronic board
Page 24 2.11 ES-MINI series electrical layouts
PROGRAMMING
Page 26 3.1 NANO EasySTEAM Controller description
Page 27 3.2 Combination of keys
Page 28 3.3 Status LED on Master HUM2 electronics
Page 29 3.4 1st Level programming
Page 30 3.5 2st Level programming
MASTER / SLAVE CONFIGURATION
Page 35 4.1 Single humidifier configuration
Page 35 4.2 Master/Slave humidifiers configuration
IGNITING THE HUMIDIFIER
Page 38 5.1 First ignition
Page 38 5.2 Steam production
DIAGNOSTICS
Page 39 Diagnostics
TABLE OF CONTENTS
CHAP. 1
CHAP. 2
CHAP. 3
CHAP. 6
CHAP. 4
CHAP. 5

Page 4 Rev. 02-19
USER MANUAL
MAINTENANCE
Page 42 7.1 Maintenance
Page 42 7.2 General and safety Standards
Page 42 7.3 Maintenance intervals
Page 44 7.4 Replacement of the cylinder
Page 46 7.5 Cleaning the cylinder
STEAM DISTRIBUTION
Page 47 8.1 Generality
Page 47 8.2 Example of distribution in air duct
Page 47 8.3 Example of distribution in ambient
Page 48 8.4 Choosing a steam distributor
Page 48 8.5 Condensation recovery
ATTACHMENTS
Page 49 9.1 EU Declaration of conformity
Page 50 9.2 ES-MINI series spare parts
CHAP. 7
CHAP. 8
CHAP. 9

Rev. 02-19 Page 5
USER MANUAL
GENERALITY
The family of Pego EASYSTEAM ES-MINI immersed electrode humidifiers can be considered as
the most complete by type of use and ease of maintenance.
The line includes humidifiers with 3kg/h production capacity with single-phase electric power
supply, and 6kg/h production capacity with three-phase+neutral electric power supply; all able to
work in ON/OFF mode, proportional mode with integrated humidistat and 4-20mA or 0-10V probe,
proportional mode with 0-10V external signal, in ON/OFF mode from integrated thermostat and
proportional mode from integrated thermostat.
The EASYSTEAM ES-MINI humidifiers are provided with a microprocessor software enabling the
widest programming for a fully customised use and a completely automatic functioning.
In fact, it is possible to set the maximum capacity of steam production, values of production
capacity intermediate in percentage, the frequency of deconcentration discharges, the discharge of
water for inactivity.
The EASYSTEAM ES-MINI line is also provided with a display for real time viewing of the
humidity in the premises to be treated; the current absorbed by the electrodes, the hours of work,
various alarms, water charging and discharging as well as all easily settable programming
parameters.
An acoustic alarm (buzzer) is present in the EASYSTEAM ES-MINI humidifiers that warns the
user of any anomalies; the internal software is able to evaluate the seriousness of the anomaly,
blocking the machine or continuing the steam supply.
The strength of the EASYSTEAM ES-MINI line is the simplicity with which the cylinder is
replaced when normal wear makes it necessary.
CHAP.1 INTRODUCTION
1.1

Page 6 Rev. 02-19
USER MANUAL
WARRANTY CONDITIONS
The EASYSTEAM series humidifiers are covered by a 24-months warranty against all
manufacturing defects as from the date indicated on the product ID code.
In case of defect the product must be appropriately packaged and sent to our production plant or to
any authorized Service Center with the prior request of the Return Authorization Number.
Customers are entitled to have defective products repaired, spare parts and labour included. The
costs and the risks of transport are at the total charge of the Customer.
Any warranty action does not extend or renew its expiration.
The warranty excludes:
Damage resulting from tampering, negligence, inexperience or inadequate installation of the
humidifier and its accessories.
Installation, use or maintenance that does not comply with the prescriptions and instructions
provided with the humidifier.
Repair work carried out by unauthorized personnel.
Consumption material (sunk-electrode cylinders)
Damage due to natural phenomena such as lightning, natural disasters, etc...
In all these cases the costs for repair will be charged to the customer.
The intervention service in warranty can be refused when the equipment is modified or transformed.
Under no circumstances Pego S.r.l. will be liable for any loss of data and information, costs of
goods or substitute services, damage to property, people or animals, loss of sales or earnings,
business interruption, any direct, indirect, incidental, consequential, damaging, punitive, special or
consequential damages, in any way whatsoever caused, whether they are contractual, extra
contractual or due to negligence or other liability arising from the use of the product or its
installation.
Malfunction caused by tampering, bumps, inadequate installation automatically declines the
warranty. It is compulsory to observe all the instructions in this manual and the operating conditions
of the product.
Pego S.r.l. disclaims any liability for possible inaccuracies contained in this manual if due to errors
in printing or transcription.
Pego S.r.l. reserves the right to make changes to its products which it deems necessary or useful
without affecting its essential characteristics.
Each new release of the Pego product user manual replaces all the previous ones.
As far as not expressly indicated, is applicable the Law and in particular the art. 1512 C.C. (Italian
Civil Code).
For any controversy is elected and recognized by the parties the jurisdiction of the Court of Rovigo.
1.2

Rev. 02-19 Page 7
USER MANUAL
FUNCTIONING PRINCIPLE
The immersed electrode humidifiers of the series EASYSTEAM, exploit the conductivity of water
for food use for the production of steam by boiling.
In the cylinder, an electric current is triggered between the immersed electrodes; this overheats the
water until it is brought to the boiling temperature.
The current intensity, expressed in amperes, varies according to the quantity of water present in the
cylinder and in contact with the surface of the electrodes and its conductivity.
The electronics present in the humidifier is able, thanks to an amperometric transformer, to measure
this intensity of current and therefore, by controlling the load solenoid valve to raise the water level
in the cylinder or the drain pump to lower it, it succeeds to control this phenomenon in an
absolutely automatic way.
Furthermore, thanks to a microprocessor technology and to an humidity sensor, proportional
operation can be set, optimizing the consumption of water and electricity according to the humidity
requirements of the environment to be treated.
In addition to ensuring functioning during steam output, the discharge pump also guarantees the
complete cylinder draining when the unit has been inactive for a set time: this prevents the
formation and the deposit of limescale or other particles created during the boiling process.
The humidifiers of the EASYSTEAM series are totally automatic and require only periodic
cleaning of the cylinder and its replacement when the electrodes are worn.
The layout below illustrates the functioning principle.
1.3

Page 8 Rev. 02-19
USER MANUAL
The supplied steam is managed proportionally to steam production request that the electronic
control calculates depending on the
chosen functioning among the eight
available, described in chap. 2.4. The
minimum steam supply is set at 20% of
the rated maximum current
(independently of Pr) and is managed
with an activation hysteresis; the
maximum supply, which occurs at a
maximum production request,
corresponds to the percentage set in the
first level variable (Pr). If for example
on an ES6 that produces 6kg/h of
steam, the variable Pr is set to 100%
the maximum production will be 6kg/h;
but if the variable Pr is reduced to 50%,
the maximum production will be 3kg/h.
For correct operation, the humidifier must be supplied with drinking water coming from the
aqueduct; this is because it is free from any element harmful to health and is compatible with
the range of conductivity useful for optimal operation of the humidifier. However, in some
geographical areas mains water may be unsuitable for optimal functioning due to very low
conductivity or high hardness or because it’s too aggressive; the below is a summary table of the
parameters required for correct humidifier functioning.
POTABLE WATER FUNCTIONING RANGE
LIMITS
with standard
cylinder
LIMITS
with cilinder
for low
conductivity
PARAMETER
UNIT OF
MEASURE
MIN
MAX
MIN
MAX
Water conductivity at 20°C *
S/cm
250
1300
125
350
pH
7
8,5
7
8,5
Hardness
mg/l CaCO3
160
450
60
160
Chlorine
ppm Cl2
-
0,2
-
0,2
Chlorides
mg/l Cl-
-
25
-
20
Calcium sulphate
mg/l CaSO4
-
95
-
55
Metal impurities / Solvents / Soaps / Lubricants
mg/l
-
0
-
0
Temperature
°C
+1
+40
+1
+40
* Water conductivity is always expressed at 20°C; bear in mind that conductivity decreases as water
temperature drops and so water may not be very conductive during winter when mains water is
particularly cold.
To overcome this problem, decrease the produced steam percentage described in chapter 3,
PROGRAMMING, in this manual.
Do not supply the humidifier with well water or treated with osmosis purifiers,
demineralisers or softeners or taken from cooling circuits.
Minimum supply
Steam production request
Supplied steam
Maximum supply

Rev. 02-19 Page 9
USER MANUAL
ES-MINI SERIES HUMIDIFIERS IDENTIFICATION CODES
400ES3MMINI Single-phase humidifier with stainless steel casing, with 3kg/h steam
production capacity, integrated electronics with eight selectable operating
modes.
400ES6MINI Three-phase humidifier with stainless steel casing, with 6kg/h steam
production capacity, integrated electronics with eight selectable operating
modes.
ES-MINI SERIES HUMIDIFIERS TECHNICAL DATA
TECHNICAL DATA AND
WORKING CONDITIONS
400ES3MMINI
400ES6MINI
STEAM PRODUCTION (in kg/h)
3
6
ELECTRIC POWER SUPPLY
230V 50-60Hz
400V 3/N 50-60Hz
POWER (kW)
2
4,5
ABSORBED CURRENT (A)
9
6,5
TYPE OF CONTROL
Display NANO + Master HUM2 EASYSTEAM series
ELECTRONIC CONTROL POWER SUPPLY
230V 50-60Hz
STEAM OUTLET DIAMETER (mm)
25
25
CYLINDERS NUMBER
1
1
VACUUM WEIGHT (kg)
8
8
WEIGHT WITH OPERATIONAL UNIT (kg)
11,5
11,5
WATER SUPPLY PRESSURE
1-10 bar
FUNCTIONING AMBIENT TEMP.
+1 ÷ +40 °C
FUNCTIONING AMBIENT HUMIDITY
< 60 %RH (90 %RH non condensing)
STORAGE TEMPERATURE
-10 ÷ +70 °C
PROTECTION RATING
IP20
1.4
1.5

Page 10 Rev. 02-19
USER MANUAL
OVERALL DIMENSIONS
ES-MINI SERIES
IDENTIFICATION DATA
The appliance described in this manual is provided with a label on the side reporting the
identification data of the same:
• Manufacturer Name
• Code of appliance
• Serial Number
• Power supply voltage
• Nominal current
STANDARD EQUIPMENT
The humidifiers of the EASYSTEAM line, for assembly and use, are equipped with:
N. 1 3/4 gas connection for water load.
N. 1 32mm external diameter connection for water discharge.
N. 1 25mm external diameter connection for the steam tube.
N. 1 User manual.
N. 1 Test checklist which reports:
-Humidifier model.
-Default configuration.
-Steam production at 100%.
-Electric power supply type.
-Absorbed power in kW.
-Nominal absorbed current.
TYPE
400ES3MMINI
400ES6MINI
L
320
320
P
193
193
H
447
447
1.6
1.7
1.8
KIT ELETTRONICA

Rev. 02-19 Page 11
USER MANUAL
MAIN INSTALLATION WARNINGS
1. The installation, maintenance and use of the appliance must be carried out by qualified
personnel able to safely perform the requested operations. Carefully read this manual before
performing any operations and follow all its indications.
2. Install the appliance as close as possible to the environment where the steam is to be
introduced, namely in the position that guarantees the shorter length of the steam tube. We
recommend not to exceed 5 meters.
3. Install the appliance at a height that allows easy access to the control unit for parameter
adjustment and viewing of the display. We recommend a height from the ground of about 1
meter.
4. Install the appliance at a height that allows easy access to the inside of the humidifier for
cylinder replacement.
5. Some parts of the humidifier, during operation, may exceed the temperature of 60°C. Make
sure that the surfaces in contact with the humidifier are compatible with these values.
6. Do not install and use the humidifier near products or objects that can be damaged in contact
with water or the humidity produced.
7. Avoid placing power cables with signal cables in the same conduit (probes and digital
inputs).
8. Reduce the lengths of the connecting cables as much as possible, avoiding that the wiring
takes up the spiral shape, which is harmful for possible inductive effects on the electronics.
9. Install a magneto thermal protection switch, upstream of the humidifier.
10. All conductors used in the wiring must be appropriately proportioned to support the load they
are to supply.
11. If it is necessary to extend the probe, it is necessary to use conductors with a suitable section
and in any case not less than 1mm2.
12. Connect a pipe with a diameter of not less than 32mm to the drain hose. This pipe must be
firmly clamped to the drain sleeve and have vertical development for at least the first 50cm.
Make sure that you do not create bottlenecks and do not exceed the height at any point in the
path, the level of the drain sleeve.
13. Use only drinking water for the water load, with a pressure between 1 and 10 bar.
14. Check the default setting shown on the enclosed TEST CHECKLIST, before starting up the
humidifier. If the default setting is different from your needs, set the parameters as indicated
in chapter 3 and in accordance with the connections indicated in chapter 2.4.
15. With the default setting of parameter In1=2, the humidifier to work requires the digital input
1 to be enabled by means of a voltage free contact (terminals 24 and 25 on the electronic
board Master HUM2) regardless of the selected operating mode.
16. If it is not necessary to use an external enable, jumper the terminals 24 and 25 on the Master
HUM2 electronic board or set the parameter In1=0.
17. Without enabling, the display alternates the word OFF with normal displaying.
CHAP. 2 INSTALLATION
2.1

Page 12 Rev. 02-19
USER MANUAL
INSTALLING THE ES-MINI SERIES HUMIDIFIER
1. Remove the humidifier from its packaging keeping it upright, remove the protective nylon bag
and check the integrity of the appliance.
2. With a screwdriver, unlock the safety locks on the sides of the front cover (fig. 1 e 2).
Fig. 1 Fig. 2
3. Remove the front cover by gripping it on the sides and slightly pulling towards you (fig. 3).
Fig. 3
2.2

Rev. 02-19 Page 13
USER MANUAL
4. Fix the humidifier to the wall, at least 1 meter from the ground and leveled (fig.4) using the four
slots at the back to insert the fixing screws (fig. 5 e 6).
Fig. 4
Fig. 5 Fig. 6

Page 14 Rev. 02-19
USER MANUAL
5. Connect the water discharge tube to the 32mm diameter sleeve, fixing it with the provided
clamping band (fig. 7).
Fig. 7
Connect a pipe with a diameter of not less than 32mm and suitable for temperatures not
less than 100°C, to the drain hose. This pipe must be firmly clamped to the drain sleeve
and have vertical development for at least the first 50cm. Make sure that you do not
create bottlenecks and do not exceed the height at any point in the path, the level of the
drain sleeve.
NEVER WORK THE HUMIDIFIER IF THE DISCHARGE LINE IS NOT
CORRECTLY CONNECTED!
6. Connect the water supply line to the 3/4 gas connection of the electrovalve located under the
humidifier (fig. 8).
Fig. 8
Connect the water supply line with a non metal piping, e.g. rubber, PVC, polypropylene,
nylon, etc.

Rev. 02-19 Page 15
USER MANUAL
7. Connect the steam tube at the cylinder flange sleeve, fixing it with the provided clamping band
(fig. 9).
Fig. 9
Use only PEGO HUMIDIFIERS steam tube or other tube with certification that
guarantees its use in the presence of high temperatures without internal vulcanization
processes and release of harmful substances!
DO NOT MAKE BOTTLENECKS, SIPHONS OR LENGTHS GREATER THAN 5
METERS!
To correctly connect the steam distribution line, carefully read chapter 8, STEAM
DISTRIBUTION.

Page 16 Rev. 02-19
USER MANUAL
ES-MINI SERIES HUMIDIFIERS SAFETY DEVICES AND POWER SUPPLY
ELECTRIC CONNECTIONS
Connect the electric power supply to the humidifier terminal board, bringing 230V voltage
to clamps R and N for single-phase models, or 400V voltage + neutral to the RST and N
clamps for the three-phase models.
It is mandatory to connect the terminal marked by the yellow / green color and the initials PE to the
ground system of the electrical supply network. If necessary, check the efficiency of the earthing
system.
Leave the jumper in terminals 60 and 61 of the terminal board or replace it, if necessary, with a
normally closed emergency contact.
The terminals 62 and 63 of the terminal board (output DO5) are already wired, in tension. The
electronics are preconfigured to use this output to supply the fan-assisted distributor head (in case,
consult the user manual attached to it). By changing the setting of parameter dO5 it is possible
otherwise to use this output for other functionalities.
ES-MINI SERIES SENSORS AND CONTROL SIGNALS CONNECTIONS
The humidifier has nine different operating modes that can be set by the software variable S9
described in chapter 3.5 and by specific electrical connections.
It is also necessary to enable the digital input In1 terminals 24 and 25 on the electronic board
Master HUM2 for all operating modes (enabling = closed contact between clamps 24 and 25). See
the parameter settings In1, In2 and In3 for all possible enablements. Without enabling, the display
alternates the OFF writing with normal displaying.
Below are the specific connections for every functioning mode.
If you want to connect the humidifier with an humidity probes not supplied by PEGO
s.r.l., contact the after-sales assistance center to verify the hardware compatibility
between the probe and the humidifier.
-[S9=0] ON/OFF Functioning:
This type of operation involves the production of steam in only 2 modes: no production or
production at full capacity set (Pr parameter). The consent is usually given by a voltage free
contact coming from an electrical panel which, in turn, is controlled by a humidistat. Set the
second level variable S9=0 and connect the consent to clamps 24 and 25 of the Master HUM2
board (Enabling present with closed contact).
2.3
Signal
ON-OFF
Steam production request
2.4
Enabling

Rev. 02-19 Page 17
USER MANUAL
-[S9=1] PROPORTIONAL functioning with 4-20mA ambient humidity probe
(INTEGRATED HUMIDISTAT):
This type of operation involves proportional steam production; the humidifier will automatically
regulate the steam production according to the request in the environment depending to the set
point. The consent is provided by a humidity probe at 4-20mA (0-100% RH) that, in addition to
regulating steam production, allows to show the relative humidity of the environment directly
on the humidifier display. Set the second level variable S9=1 and connect the signal 4-20mA of
the humidity probe to clamps 14 and 15; in particular, connect the RH signal to clamp 14, and
connect +V to clamp 15.
-
-
-
The Bp proportional band is the percentage value of humidity around the set point; the
humidifier works proportionally within this value. Example: if the proportional band is set on
default value 10% (±5% set point value) and humidity is set at 50%, below 45% the humidifier
will work at 100% of steam production; above 55%, the humidifier will not produce steam.
Between 45% and 55%, the humidifier will optimally regulate steam production.
-[S9=2] PROPORTIONAL functioning with 0-10Vdc reference signal:
This type of operation involves the production of steam proportionally to the reference signal
0-10Vdc. Example: a reference signal of 6Vdc will allow the humidifier to produce 60% of
steam production referred to the software variable Pr. So if Pr = 70%, steam production will be
42%. Set the second level variable S9=2 and connect the signal of reference 0-10V to clamps 16
and 17; in particular, connect VRH (0-10Vdc probe output) to clamp 16 and GND mass to
clamp 17.
RH% Ambient
humidity probe
Steam production request
External reference
signal 0-10V
Enabling
GND
VRH
Enabling
RH% Ambient umidity
probe (4-20mA)
RH
+V
External reference signal
0-10V
Steam production request

Page 18 Rev. 02-19
USER MANUAL
-[S9=3] PROPORTIONAL functioning with 4-20mA ambient humidity probe + 4-20mA
humidity probe in air duct (INTEGRATED HUMIDISTAT):
This type of operation involves proportional steam production; the humidifier will automatically
regulate the steam production according to the request in the environment depending to the set
point and to the value measured in duct.
Set the second level variable S9=3, connect the 4-20mA signal of ambient humidity probe
(0-100%RH) to clamps 14 and 15; in particular, connect RH signal to clamp 14 and +V to
clamp 15. Connect 4-20mA signal of humidity probe in air duct (0-100%RH) to clamps 20 and
21; in particular, connect signal RH to clamp 20 and +V to clamp 21. For further informations
on the humidity probe in air duct, refer to chapter 3 “Programming” (variables StC, r0, t1).
-[S9=4] PROPORTIONAL functioning with 0-10Vdc reference signal + humidity probe in
air duct (4-20mA):
This type of operation involves the production of steam proportionally to the 0-10Vdc reference
signal and to the humidity measured in duct.
Set the second level variable S9=4 and connect the 0-10Vdc reference signal to clamps 16 and
17; in particular, connect VRH to clamp 16 and GND mass to clamp 17. Connect 4-20mA
signal of humidity probe in air duct (0-100%RH) to clamps 20 and 21; in particular, RH signal
to clamp 20 and +V to clamp 21.
For further informations on the humidity probe in air duct, refer to chapter 3 “Programming”
(variables StC, r0, t1).
Enabling
RH% humidity probe
in air duct (4-20mA)
External reference
signal 0-10V
RH
+V
GND
VRH
Enabling
RH% Ambient humidity
probe (4-20mA)
RH% humidity probe in
air duct (4-20mA)
RH
+V
RH
+V

Rev. 02-19 Page 19
USER MANUAL
-[S9=5] PROPORTIONAL functioning with 0-10Vdc ambient humidity probe
(INTEGRATED HUMIDISTAT):
This type of operation involves proportional steam production; the humidifier will automatically
regulate the steam production according to the request in the environment depending to the set
point. The consent is provided by a 0-10Vdc humidity probe (0-100%RH) that, in addition to
regulating steam production, allows to show the relative humidity of the environment directly
on the humidifier display. Set the second level variable S9=5 and connect 0-10Vdc signal of the
humidity probe to clamps 16 and 17; in particular, connect VRH signal to clamp 16 and
connect GND to clamp 17.
-
-
-
The Bp proportional band is the percentage value of humidity around the set point; the
humidifier works proportionally within this value. Example: if the proportional band is set on
default value 10% (±5% set point value) and humidity is set at 50%, below 45% the humidifier
will work at 100% of steam production; above 55%, the humidifier will not produce steam.
Between 45% and 55%, the humidifier will optimally regulate steam production.
-[S9=6] PROPORTIONAL functioning with 0-10Vdc ambient humidity probe + 0-10Vdc
humidity probe in air duct (INTEGRATED HUMIDISTAT):
This type of operation involves proportional steam production; the humidifier will automatically
regulate the steam production according to the request in the environment depending to the set
point and to the value measured in duct.
Set the second level variable S9=6 and
connect 0-10Vdc signal of the humidity
probe (0-100%RH) to clamps 16 and 17; in
particular, connect VRH signal to clamp
16 and connect GND to clamp 17. Connect
0-10Vdc signal of the humidity probe in
air duct (0-100%RH) to clamps 22 and 23;
in particular, connect VRH signal to clamp
22 and GND to clamp 23.
For further informations on the humidity
probe in air duct, refer to chapter 3
“Programming” (variables StC, r0, t1).
RH% Ambient
humidity probe
Steam production request
RH% Ambient
humidity probe 0-10V
Enabling
GND
VRH
RH% Ambient humidity
probe 0-10V
Enabling
GND
VRH
GND
VRH
RH% Channel humidity
probe 0-10V

Page 20 Rev. 02-19
USER MANUAL
-[S9=7] Functioning with integrated thermostat (ON/OFF hot call):
This type of operation involves the production of steam in only 2 modes: no production or
production at full capacity set (Pr parameter) which is activated when the temperature measured
by the ambient probe falls below the value of SET POINT-r1 and remains active until the
temperature increases and exceeds the SET POINT.
Set the second level variable S9=7 and connect the NTC temperature probe to clamps 18 and 19
of the Master HUM2 electronic board.
(r1=Temperature differential referred to set point)
In this mode, it is possible to set the two configurable outputs (Do4 and Do5 already wired on
terminals 62 and 63, in tension) to manage a few typical functions of a sauna or a Turkish bath,
such as the essence inlet, the management of outlet or inlet fans.
Essence Management (dO4 or dO5 = 4):
In a Turkish bath the essence is provided (with the times set in t2 and t3) when the humidifier is
producing steam and the temperature measured by the ambient probe is higher than 70% of the
set point. By using the key combination arrow up + Stand-by is possible at any time to enable or
disable the inlet of the essence; in particular, the current status is displayed after pressing
the key combination for three seconds (EoF = essence OFF or Eon = essence ON) and by
continuing to hold the keys pressed for another three seconds, the state is switched.
Inlet fan (dO4 or dO5 = 3):
The inlet fan is usually used to introduce or mix the steam in the room. The relay linked to this
function is activated when there is a steam production request (it remains active even during the
phases of water discharge for deconcentration or due to overcurrent) and it is deactivated with
the delay set in parameter t6 after the end of the steam production request. If parameter t6 is set
to -1, the inlet fan run in continuous gear (active even during stand-by or alarms).
Outlet fan (dO4 or dO5 = -3):
The outlet fan is usually used to ensure air exchange and to create the fog effect. The relay
linked to this function is activated when there is no steam production request. It is also possible
to start a drying cycle at the end of the day; with the humidifier in stand-by, press the keys
arrow down+Stand-by to activate the cycle that is indicated on the display with the writing
Uon = outlet fans ON. In this phase the output of the outlet fan remains active for the hours set
in the variable t4. To stop this cycle, simply exit the stand-by status.
Ambient
temperature
Steam production request
Enabling
NTC Ambient
temperature probe