fisair HEF3 CAD Series Manual
HEF3 Series MANUAL 2
HEF3 Series MANUAL 3
INDEX
1. GENERAL DESCRIPTION...................................................................................................... 5
1.1. Safety instructions............................................................................................................ 6
2. RATING PLATE...................................................................................................................... 8
3. PRODUCT CODE..................................................................................................................10
4. INSTALLATION REQUIREMENTS ........................................................................................11
5. DIMENSIONS, CONNECTIONS, FITTINGS AND ADJUSTMENTS HEF3 DIRECT WATER.13
5.1. External dimensions tolerances and connections (standard)...........................................13
5.2. Scheme of the connections (Standard)............................................................................15
5.2.1. Connection/ Regulation of the water supply .............................................................16
5.2.2. Connecting the drain to the water trap......................................................................17
5.2.3. Setting in the irrigation valve in the evaporative cassette .........................................18
6. OPTIONAL HEF3 SERIES ELEMENTS.................................................................................20
6.1. Connecting the NC solenoid valve IP55 water supply 24 VDC, 24VAC or 230VAC.........20
7. WATER QUALITY, AIR QUALITY AND MAINTENANCE CONDITIONS................................21
8. START UP RECOMENDATIONS..............................................................................................25
9. MAINTENANCE.....................................................................................................................26
10. CLEANING AND DESINFECTION......................................................................................27
10.1. Evaporative humidification: a natural method that does not carry bacteria...................27
10.2. Cleaning ......................................................................................................................28
10.2.1. General....................................................................................................................28
10.2.2. Scale formation process...........................................................................................28
10.2.3. Cassette cleaning protocol.......................................................................................28
10.3. Desinfection.................................................................................................................32
11. DISASSEMBLY STRUCTURE............................................................................................34
11.1. Changing the evaporative cassettes............................................................................34
12. MACHINE CONFORMITY DECLARATION........................................................................38
13. WARRANTY.......................................................................................................................39
HEF3 Series MANUAL 4
TABLE OF ILLUSTRATIONS
Ilustration 1. Side view of HEF3.....................................................................................................33
Ilustration 2. Side view of HEF3.....................................................................................................34
Ilustration 3. Disassembly of the side cover...................................................................................35
Ilustration 4. Disassembled casssette............................................................................................36
HEF3 Series MANUAL 5
HEF3-CAD Series
1. GENERAL DESCRIPTION
EVAPORATIVE HUMIDIFER OPERATING PRINCIPLES
FISAIR evaporative humidifiers are units designed to increase the water vapour content of the
treated air, by making use of the natural evaporation of water from its liquid phase. The air supply
being treated is passed through a cellular panel dampened using an irrigation system. This panel is
composed of undulating sheets of inorganic paper with stiffening and water absorbent additives.
The layout, as channels criss-crossing the panel provides a huge surface for water-air contact, which
maximises water evaporation, and reduces to a minimum resistance to the movement of the air
(pressure drop).
FISAIR evaporative humidifiers work in a similar way to natural processes in rivers, lakes, and seas.
The vapour added to the air is exclusively pure water vapour.
PROVISIONAL STORAGE
During storage, units must be kept dry and protected from the elements.
Warning: Avoid direct sunlight and sites in which temperatures can exceed 50ºC
Remark: Thermo-hygrometric conditions during storage:
Temperature: [-10… 50ºC]
Relative Humidity: [5…95%HR]
without condensation
HEF3 Series MANUAL 6
1.1. Safety instructions
FISAIR disclaims any liability if not all the installation and operating instructions it has
provided are complied with; if the products have been modified or altered without the written
consent of FISAIR; or if the products have been subjected to improper use, mishandling,
alteration, improper maintenance or show signs of negligent use or being involved in an
accident. These situations could include an incorrect power connection, impacts with other
objects, removal or disarming of security fittings/measures, etc.
Please read these safety Remarks carefully and examine the equipment to become familiar with it
before installing, commissioning, or servicing.
The following symbols or messages may appear in this document or on the equipment. They warn
of potential hazards or provide information that may help you clarify or simplify a procedure.
Attention, Live Current
The presence of this symbol on a hazard or warning label indicates that
there is a risk of electrocution, which can lead to personal injury or life-
threatening conditions if the instructions are not followed.
Attention
The presence of this symbol on a hazard or warning label indicates that
there is a risk of electrocution, which can lead to personal injury or life-
threatening conditions if the instructions are not followed.
Installation of a residual current device in the power supply line
The installer must install a specific residual current device in the machine's electrical
power circuit.
HEF3 Series MANUAL 7
General points
•If you notice that something is not working properly, switch off the unit immediately and take
steps to ensure that it does not switch on again. All faults must be corrected immediately.
•Use duly qualified personnel to carry out repair work. This will ensure that the unit operates
safely.
•Use only original FISAIR replacement parts.
•Refer to local regulations that restrict or regulate the use of this humidifier.
How the unit works
•Do not jeopardise the safety of the unit.
•Periodically check the device's protection and alert devices.
•The unit's safety fittings must not be removed or disabled.
Installing, Disassembling, Maintaining and Repairing the unit
•The machine must not be manipulated when it is operating.
•Switch off the unit's power supply when conducting maintenance work or making repairs to
the unit.
•Never add components to the unit without prior written approval from FISAIR.
About the electrical components
•Any work that affects the electrical components must be carried out by qualified electricians.
•Use only original, correctly calibrated fuses.
•Carry out periodic checks of the electrical unit.
•All defects, such as loose connections or burnt cables, must be repaired immediately.
HEF3 Series MANUAL 8
2. RATING PLATE
The rating plate provides essential information about the technical features of the machine.
The EC MachinerySafety Regulation requires all machinery operated within the European Economic
Community to have a rating plate indicating its main features, the machine serial number and the
manufacturer's name inscribed in a durable manner.
According to article 2, section g of the Machinery Directive 2006/42/CE - RD 1644/2008, ‘partly
completed machinery’ means
“An assembly which is almost machinery, but which cannot in itself perform a specific application.
A drive system is partly completed machinery. Partly completed machinery is intended only to be
incorporated into or assembled with other machinery or other partly completed machinery or
equipment, thereby forming machinery to which this Directive applies”
•Model: description of the particular HEF3 device
•Serial No.: equipment serial number
•FISAIR devices it can be joined with
•Machine type: Machine or Partly completed machinery
•Designed in accordance with directive
•Made in Spain (EU): Place and date of manufacture
•QR code for technical assistance service and warranty activation
HEF3 Series MANUAL 9
Machine type rating plate
HEF3-500-I-CAD
HEF3 Series MANUAL 10
3. PRODUCT CODE
MODEL
MATERIAL
CODE
HEF3-500-I-CAD
Stainless steel AISI-304
71037007
HEF3-1000-I-CAD
Stainless steel AISI-304
71037001
HEF3-1500-I-CAD
Stainless steel AISI-304
71037002
HEF3-2000-I-CAD
Stainless steel AISI-304
71037003
HEF3-2500-I-CAD
Stainless steel AISI-304
71037004
HEF3-3000-I-CAD
Stainless steel AISI-304
71037005
HEF3-3500-I-CAD
Stainless steel AISI-304
71037006
HEF3 Series MANUAL 11
4. INSTALLATION REQUIREMENTS
GENERALITIES
In order to optimize maintenance/installation, humidifiers must be placed on a level waterproof
surface, with a drain or run-off, so possible leaks can be dealt with during installation, set up,
operation and maintenance.
Assembly inside an air handling unit must ensure the air being treated passes through the
evaporative panels, by closing off the perimeters adequately to prevent possible by-passes of the
air flow.
All humidifier components are employed downstream, or in other words, in the outlet of the
humidified air, as standard.
LOCATION AND SERVICING SPACE
The normal location of the humidifier in the air handling system is after the pre-heating coil and
before the cold/ heating coil if there is one. However, the position must be chosen by the project
designer.
Remark: Thermo-hygrometric operative conditions (*)
Temperature: [5…50ºC]
Relative humidity: [5…97%HR]
HEF3 Series MANUAL 12
EVAPORATIVE PANEL DRYING TIME
To ensure complete drying of the cooling pad, after a work period, the air fan of the conduct must be
working during the times set out in the following table:
Before drying the evaporation panel, the ventilation must be stopped for 10 minutes, and watering
continued with the cassettes. This is done by keeping the water recirculation or direct water irrigation
to remove all possible minerals stuck to the panel.
Afterwards, the recirculation is turned-off and the ventilation system re-started for the estimated time
on the above table.
HEF3 Series MANUAL 13
5. DIMENSIONS, CONNECTIONS, FITTINGS AND ADJUSTMENTS HEF3 DIRECT
WATER
5.1. External dimensions tolerances and connections (standard)
HEF3 Series MANUAL 14
MODEL
MATERIAL
CODE
L WIDTH
EQUIPMENT
(mm)
H HEIGHT
EQUIP
(mm)
M (mm)
C (mm)
WEIGH
T kg.
HEF3-500-
I-CAD
Stainless
steel AISI-
304
71037007
460
410
220
250
20
HEF3-
1000-I-
CAD
Stainless
steel AISI-
304
71037001
460
540
285
315
25
HEF3-
1500-I-
CAD
Stainless
steel AISI-
304
71037002
480
650
340
355
29
HEF3-
2000-I-
CAD
Stainless
steel AISI-
304
71037003
600
650
340
400
31
HEF3-
2500-I-
CAD
Stainless
steel AISI-
304
71037004
600
750
390
450
34
HEF3-
3000-I-
CAD
Stainless
steel AISI-
304
71037005
700
750
390
500
36
HEF3-
3500-I-
CAD
Stainless
steel AISI-
304
71037006
750
800
415
560
54
MODEL
MATERIAL
CODE
X CASSETTE
WIDTH
(mm)
D CASSETE
HEIGHT (mm)
S CASSETE
THICKNESS
(mm)
HEF3-500-I-CAD
Stainless steel
AISI-304
71037007
400
252
103
HEF3-1000-I-CAD
Stainless steel
AISI-304
71037001
400
382
103
HEF3-1500-I-CAD
Stainless steel
AISI-304
71037002
420
492
103
HEF3-2000-I-CAD
Stainless steel
AISI-304
71037003
540
492
103
HEF3-2500-I-CAD
Stainless steel
AISI-304
71037004
540
592
103
HEF3-3000-I-CAD
Stainless steel
AISI-304
71037005
640
592
103
HEF3-3500-I-CAD
Stainless steel
AISI-304
71037006
686
642
103
HEF3 Series MANUAL 15
5.2. Scheme of the connections (Standard)
A
Connection to the water supply (connection
to external water at between 1 and 6 bar)
B
Connection to drain to the water trap
A
B
HEF3 Series MANUAL 16
5.2.1. Connection/ Regulation of the water supply
Connect the water supply (A) to the ½” male BSP float valve (6) using suitable piping with a cut-off
valve (1). We recommend the installation of a 0.5 mm light filter (2).
In the HEF3 Series, when the feed water temperature is below the dew point of the air flow after the
humidifying panel, it is recommended to insulate the collector and pipe to prevent possible
condensation.
Remark: How to avoid standing water in the water supply:
oIf the distance from the supply valve to the main water supply line (with continuous water
flow) ≥ 2m:
•Install a non-return valve before the cut-off valve.
•Install a 3-way valve, before the non-return valve, with a return line to the main
water supply line, to avoid water retention.
oIf the distance from the supply valve to the main water supply line (with continuous water
flow) <2m:
•Only the non-return valve is installed before the cut-off valve.
6
2
1
Supplied by others
HEF3 Series MANUAL 17
5.2.2. Connecting the drain to the water trap
DRAINING CONNECTIONS
Connect the 1 1/2” outlet (BSP Female) of the drain (3) to the drainage network (B) without a shut-
off valve.
•The connection of the water outlet to the drainage must include a water trap high
enough (2H) to exceed the pressure in the system, so the water tank can be
completely emptied, for hygiene reasons. The system will also have the normal slope
of typical drainage lines.
•Recovering water from the humidification process into the drinking water mains is
absolutely prohibited.
•The siphon must be able to drain freely and must not be connected directly to the
sewer pipe.
Water trap for positive pressures
Water trap for negative pressures
Hmin.(mm) = P(Pa)/10
P= Fan maximum pressure
3
Supplied by others
HEF3 Series MANUAL 18
5.2.3. Setting in the irrigation valve in the evaporative cassette
•Water flow for the cassette (QRt) ≥0.3 l/min
Adjust the irrigation valve of the evaporative cassette so HIS
surfaces are uniformly wet. The empirical value of approximately
1 litre/second for each square metre of irrigation surface is
enough to exceed the water needed for evaporation. it is
necessary to ensure the irrigation of the panels has excess water
falling into the water tank.
Excess irrigation water is important to ensure constant and superficial washing of the panels.
The width and height of the cassettes, depending on the HEF3 model, can be found in the table in
point 5.1.
➢Inorganic panel Systems: Calculation of water flow for the cassette:
•QRT = Total water flow (l/min)
•QTOT = Total flow rate to evaporate (l/min)
Example: Calculation of water flow for Cassette in a HEF3-500-I-CAD: Inorganic panel
system
•QTOT = 0,5 l/min
The adjustment is
done with a flat
screwdriver.
Regulation valve +
flowmeter 1/2 in brass
to adjust the irrigation
of each cassette
HEF3 Series MANUAL 19
•Water flow for the cassette (QRt) <0.3 l/min
Adjust the evaporation cassette water valve so his surface appears
uniformly wet. It is necessary to ensure the irrigation of the panel has
excess water falling into the water tank.
An excess of water is important to ensure the continuous washing of the
panel surfaces.
•QRT = Total water flow (l/min)
•QTOT = Total flow rate to evaporate (l/min)
Example: Calculation of water flow for Cassette in a HEF3-500-I-CAD: Inorganic panel
system
•QTOT = 0,07 l/min
Flow regulation is by
adjusting the black nut,
once the water flow is
circulating.
HEF3 Series MANUAL 20
6. OPTIONAL HEF3 SERIES ELEMENTS
6.1. Connecting the NC solenoid valve IP55 water supply 24 VDC, 24VAC or
230VAC
Supply: Service
voltage/Frequency/Power
24 VDC type
24VDC/-/16W
24 VAC type
24VAC/50Hz/11W
Type 230 VAC
230VAC/50Hz/11W
Water supply
Connection
¾” G
Environmental conditions
Ambient temperature
-40ºC..50ºC
Fluid temperature
-30ºC ..100 °C
Degree of protection
IP65
Water supply fill solenoid valve
NC, ¾” G in brass
Connector 24 VAC/DC
(L1+N+T)
Connector 230 VAC (L1+N+T)
Coil 24 VAC/DC
Coil 230 VAC
L1/N
L1/N
This manual suits for next models
14
Table of contents
Other fisair Humidifier manuals
