fisair HEF2 SERIES Manual

FISAIR S.L.U. C/ Uranio, 20, 28330 Madrid, Spain.
Tel: [phone] Fax: [phone] | [e-mail]| fisair.com
HEF2 SERIES
INSTALLATION AND MAINTENANCE MANUAL
OF EVAPORATIVE HUMIDIFIERS FOR
AIR HANDLING UNITS (A.H.U.) OR DUCTS
MHEF2-EN-20-0
In compliance with European Union Standards for machinery safety,
It’s essential to read this manual in detail before installing units.

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INDEX
1. GENERAL DESCRIPTION...................................................................................................6
1.1. Safety Instructions................................................................................................................7
2. ASSEMBLY OF ACCESORIES DELIVERED AS PARTS. (Recirculated Water)...................9
3. ASSEMBLY OF ACCESORIES DELIVERED AS PARTS. (Direct Water)...........................11
4. RATING PLATE AND MACHINE TYPE..............................................................................12
5. PRODUCT CODE...............................................................................................................14
6. MECHANICAL DESIGN, OPERATING PRINCIPLES AND COMPONENTS. (Recirculated
water, standard on/off)...................................................................................................................15
7. MECHANICAL DESIGN, OPERATING PRINCIPLES AND COMPONENTS. (Direct water,
standard on/off).............................................................................................................................18
8. MECHANICAL DESIGN, OPERATING PRINCIPLES AND COMPONENTS. (Recirculated
water with stage control)................................................................................................................23
9. MECHANICAL DESIGN, OPERATING PRINCIPLES AND COMPONENTS. (Direct water,
stage control) ................................................................................................................................27
10. INSTALLATION REQUIREMENTS.....................................................................................32
11. CONNECTIONS, SETTINGS AND REGULATION FOR HEF2 SERIES (RECIRCULATED
WATER)........................................................................................................................................35
11.1. External dimensions tolerances, Fill/drain connection and leg measurements....................35
11.1.1 External dimensions tolerances and cassettes GAP....................................................35
11.1.2 With float valve for filling 3/8".......................................................................................36
11.1.3 With float valve for filling 1/2".......................................................................................38
11.1.4 Water basin leg measurements...................................................................................40
11.2. Scheme of the connections (Standard)...............................................................................41
11.2 A. Connection to the water supply for filling the water tank. .........................................42
11.2 B. Connecting the drain to the water trap.....................................................................44
11.2 C. Electricity connection of the Fisair recirculation pump. ............................................45
11.2 D. Level detector electricity connection........................................................................47
11.2 E. Setting valves regulating evaporative cassette irrigation flow. ...............................49
11.2 F. Adjusting the constant bleed-off regulation valve.....................................................50
12. CONNECTIONS AND SETTINGS/REGULATIONS FOR HEF2-DW (DIRECT WATER
SERIES)........................................................................................................................................52
12.1. General external and connection dimensions. (Standard)...................................................52
12.1.1 External measurements tolerances & GAP between cassettes................................52
12.1.2 Dimensional drawing for water supply & drain connections.....................................53
12.1.3 Water basin leg measurements................................................................................54

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12.2. Schematic connections.......................................................................................................55
12.2 A. Connection to the water supply. ..............................................................................56
12.2 B. Connecting the drain to the water trap.....................................................................57
12.2 E. Setting of the irrigation valves in each evaporative cassette....................................57
13. CONNECTIONS AND SETTINGS/REGULATIONS MADE FOR OPTIONAL ACCESORIES.
13.1. Optional accessories schematic connections for recirculated water HEF2 series................61
13.2. Optional accessories schematic connections for direct water HEF2-DW series..................62
13.3 A. Connection of the 24V or 230V water basin filling N.C. solenoid valve (supplied loose for
installation by others) (*)................................................................................................................63
13.4 B. Connection of the N.C. motor-zone valve for automatic draining of the HEF2 series.
(Recirculated water)......................................................................................................................64
13.5 C. Flexible connector for the water supply. .........................................................................71
13.6 D. External rigid connector in PP-R (BSPT-M ½ “) for the water supply..............................72
13.7 E. External rigid connector in PP-R (BSPT-M) for draining. ................................................72
13.8 F. U.V. lamp disinfection system........................................................................................73
13.8 F1. External fill/water supply UV lamp disinfection system. (For direct water)..............73
13.8 F2. UV lamp disinfection by immersion at the water basin. (For recirculated water).....74
13.9 G. Perimeter closures cover plates & dimensional drawings...............................................76
13.10 H. Solenoid valve(s) connection for stage control. ..............................................................79
13.11 J. HEF2 Series for duct.......................................................................................................80
13.12 Connecting the 3-way motor valve to manage the water feed and emptying ......................84
13.14 I and P Control panel (P stages) with conductivity control...................................................88
13.15 Q Anchor Eyebolts...............................................................................................................89
13.16 R HEF2E-DW without collector............................................................................................90
14. WATER QUALITY, AIR QUALITY AND MAINTENANCE CONDITIONS ............................91
15. MINIMUM COMPLIANCE REQUIREMENTS VDI6022......................................................94
15.1. Recirculated water equipment:............................................................................................94
15.2. Direct water equipment:......................................................................................................94
16. HEF2E CONTROL INSTALLED IN THE AHU.....................................................................95
16.1. Basic on/off control.............................................................................................................96
16.2. Stages control.....................................................................................................................99
16.3. Dew point control..............................................................................................................104
17. START-UP RECOMMENDATIONS..................................................................................107
18. MAINTENANCE................................................................................................................109

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19. CLEANING AND DISINFECTION.....................................................................................110
19.1. Evaporative humidification: a natural method that does not carry bacteria........................110
19.2. Cleaning ...........................................................................................................................110
19.2 A. General .................................................................................................................110
19.2 B. Scale formation process........................................................................................111
19.2 C. Cassette cleaning protocol....................................................................................111
19.3 Desinfection......................................................................................................................115
20. HYGIENE CERTIFICATE.................................................................................................116
21. LATERAL DISASSEMBLY................................................................................................118
22. FRONT DISASSEMBLY...................................................................................................124
23. CLEANING THE INDIVIDUAL IRRIGATION SYSTEM. ....................................................126
24. LIST OF SPARE PARTS..................................................................................................128
25. MACHINE DECLARATION CONFORMITY......................................................................133
26. PARTLY COMPLETED MACHINERY CONFORMITY DECLARATION............................134
27. WARRANTY.....................................................................................................................135

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1. GENERAL DESCRIPTION
EVAPORATIVE HUMIDIFIER 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
HEF2 Series with recirculation

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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 readthese safety notes carefully andexamine 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.
Atención
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 has to install a specific residual current device in the machine's electrical
power circuit.

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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.
The HEF2E control panel load break switch, whether
it is external or a FISAIR CCB2.0 or CCE2.0 panel,
must be set to position “0” (lock) before performing any
maintenance on the unit.

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2. ASSEMBLY OF ACCESORIES DELIVERED AS PARTS. (Recirculated Water)
Remark:These accessories can only be attached once the equipment is located inside the air handling
unit.
ASSEMBLY SET (overflow + draining + draining valve)
Standard: A ball valve is used for draining.
Optional: A motorized zone valve is used for draining.
Female threaded
connection BSP 1” PP-R
to connect / tighten
Female threaded
connection BSP ¾” PP-
R to connect / tighten
Female threaded
connection BSP 1” PP-R
to connect / tighten
Female threaded
connection BSP ¾” PP-R
to connect / tighten

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ASSEMBLY SET OF THE CONSTANT BLEED-OFF (*)
(*) Not necessary with conductivity control
Brass fitting ½ " to
couple the regulating
valve + bleed-off
flow meter
Removable threaded
connection PP-R ½ "
to connect / tighten

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3. ASSEMBLY OF ACCESORIES DELIVERED AS PARTS. (Direct Water)
ASSEMBLY Water supply 3-way valve set + rigid
external connection (if applicable).
Couple ½” BSP link in PP-R
ASSEMBLY Drain set:
¾” BSP-H, PP-R link into the drain
outlet towards the selected hand of the
water drain.

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4. RATING PLATE AND MACHINE TYPE
The rating plate provides essential information about the technical features of the machine.
The EC MachinerySafety Regulation requires allmachinery 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”
Therefore, the HEF2 device is classified according to whether it is delivered with a CCB2.0 or
CCE2.0 control panel:
•If only the HEF2 device is supplied →Partly completed machinery
•If the HEF2 device + CCB2.0 or CCE2.0 control panel are supplied→Machine
•If the HEF2 device + CCB2.0 or CCE2.0 control panel are supplied separately →Partly
completed machinery + Partly completed machinery ≠ Maquina
The rating plate shows the following information for the equipment:
•Model: description of the particular HEF2 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

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Machine type rating plate:
Partly completed machinery type rating plate:

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5. PRODUCT CODE
Type*:
Recirculated water (HEF2E)
Direct water (HEF2E-DW)
External dimensions
Width (mm)
External dimensions
Height (mm)
External dimensions :
Length (mm)
Droplet separator (PP) :
YES(1) NO(0)
Evap. Media pad thick:
(mm)
Water inlet side:
Left(1) Center(2) Right(3)
Water draining side:
Left(L) Right(R)
HEF2E
-
1070
-
1000
-
810
-
1
-
75
-
1
-
L
HEF2E
0
100
2
R
HEF2E-DW
125
3
150
200
200
* HEF2E: High Efficiency Fisair Inorganic Panel (without Glue)
HEF2-GP760: Glued inorganic Fisair panel
HEF2-HK790: Glued organic Fisair panel

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6. MECHANICAL DESIGN, OPERATING PRINCIPLES AND COMPONENTS.
(Recirculated water, standard on/off)
MECHANICAL DESIGN
The humidifier comprises the following elements:
•A stainless steel self-supporting chassis-water tank structure that houses the unit.
•A set of evaporative cassettes of variable sizes and thicknesses, depending on the model and stainless
steel surround.
•A stainless steel float valve automatic control mechanism for the water supply, to maintain the appropriate
level in the water tank, so the unit works correctly. This valve can be regulated in order to set it to the
available water pressure in the network.
•A stainless steel water tank to hold the water, which is designed so it can be completely emptied by gravity.
•A pump for supplying water from the water tank to evaporative panels (technical data on chapter 9.2.c).
•A stainless steel mechanism integrated into the water tank acting as an overflow for the system in the
event of water level control faults.
•A distribution collector + regulation valves with flow meter set to supply the appropriate irrigation
individually to the evaporative panels.
•A diversion from the water flow to the distribution collector regulates a constant flow of water, which is
eliminated from the system in order to maintain a uniform amount of mineral salts
in the irrigation water, which we will refer to as the “Constant bleed-off system”.
(See page 36).
DROPLET SEPARATOR
Operating conditions giving rise to droplet carry-over, can be handled by adding a
second PP profile panel to the humidifiers to capture the droplets being detached
from the evaporative panel.
* Optionally the ball valve may be replaced by a drain motor valve.
**The equipment managed by our control panels (CCB2.0 or CCE2.0) will assemble the water supply solenoid valve (9)
and water drain motor valve (8*).
***The equipment managed by our control panel (CCB2.0+C or CCE2.0+C) including the conductivity control will not
have the continuous bleed-off system, as the concentration will be reduced by opening the drainage motor valve
managed by the conductivity control.
Process air
(***)
(*)
(**)
(**)

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(*) Optionally the ball valve may be replaced by a drain motor valve
(**) The equipment managed by our control panels (CCB2.0 or CCE2.0) will assemble the water supply solenoid valve (9) and water
drain motor valve (8).
(***) The equipment managed by our control panel (CCB2.0+C or CCE2.0+C) including the conductivity control will not have the
continuous bleed-off system, as the concentration will be reduced by opening the drainage motor valve managed by the conductivity
control.
1
Evaporative Cassette
2
Droplet separator cassette(optional)
3
Water recirculation pump
5
Constat bleed-off +flow meter control valve
6
Panel irrigation + flow meter control valve
7
Filling valve/ water tank level control (water supply
regulation)
8
Water tank draining valve (standard) (*)(**)
9
Filling solenoid valve (**)
(optional, supplied loose)
10
Max/Min water level detector
A
Process air
B
Humidified air
C
Water supply
D
Overflow
E
Constant bleed off (***)
F
Draining
G
Water outlet drain
(draining+overflow+constant
bleed-off)
Operating principle
HEF2 Series
(Recirculated water,
Standard on/off)

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(*) Optionally the ball valve may be replaced by a drain motor valve
(**) The equipment managed by our control panels (CCB2.0 or CCE2.0) will assemble the water supply solenoid valve
(9) and water drain motor valve (8).
(***) The equipment managed by our control panel (CCB2.0+C or CCE2.0+C) including the conductivity control will not
have the continuous bleed-off system, as the concentration will be reduced by opening the drainage motor valve
managed by the conductivity control.
1
Evaporative Cassette
2
Droplet separator cassette(optional)
3
Water recirculation pump
5
Constat bleed-off +flow meter control valve
6
Panel irrigation + flow meter control valve
7
Filling valve/ water tank level control (water supply
regulation)
8
Water tank draining valve (standard) (*)(**)
9
Filling solenoid valve (**)
(optional, supplied loose)
10
Max/Min water level detector
A
Process air
B
Humidified air
C
Water supply
D
Overflow
E
Constant bleed off (***)
F
Draining
G
Water outlet drain
(draining+overflow+constant
bleed-off)

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7. MECHANICAL DESIGN, OPERATING PRINCIPLES AND COMPONENTS. (Direct
water, standard on/off)
MECHANICAL DESIGN
The humidifier is composed of the following elements:
•A stainless steel self-supporting chassis-water tank structure that houses the unit.
•A set of evaporative panels of variable sizes and thicknesses, depending on the model and stainless
steel surround.
•A stainless steel water tank to hold the water, which is designed so it can be completely emptied by
gravity.
•A distribution collector + regulation valves with flow meter set to supply the appropriate irrigation
individually to the evaporative panels.
DROPLET SEPARATOR
Operating conditions giving rise to droplet carry-over can be handled by adding a second PP profile panel to
the humidifiers to capture the droplets being detached from the evaporative panel.
Process air
[
C
a
p
t
e
l
a
a
t
e
n
c
i
ó

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1
Evaporative Cassette
2
Droplet separator cassette(optional)
3
Control valve + water flow meter
5
½” Ball valve. Water supply
6
Ball valve 1/2” empty( water collection + distribution)
A
Process aire
B
Humidified air
C
Water supply
D
Emptiying
OPERATING
PRINCIPLE:
HEF2 SERIES- DW
(Direct water, standard
all/nothing)

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1
Evaporative Cassette
2
Droplet separator cassette(optional)
3
Control valve + water flow meter
5
Ball valve 1/2” . Water supply
6
Ball valve 1/2” empty( water collection + distribution)
A
Process air
B
Humidified air
C
Water supply
D
Emptiying