Trox X-CUBE compact Istruzioni per l'uso

Categoria
Condizionatori d'aria a sistema split
Tipo
Istruzioni per l'uso
Air handling unit
X-CUBE compact
Operating manual
Read the instructions prior to performing any task!
GB/en
A00000054197, 3, GB/en
© TROX GmbH 2017
TROX GmbH
Heinrich-Trox-Platz
47504 Neukirchen-Vluyn
Germany
Telephone: +49 2845 202-0
Fax: +49 2845 202-265
Internet: www.troxtechnik.com
06/2018
Air handling unit X-CUBE compact
2
About this manual
This operating manual enables operating or service per-
sonnel to use the X-CUBE compact air handling unit
(AHU) safely and efficiently.
The operating manual must be kept near the air han-
dling unit to be available for use at all times.
The operating manual is intended for use by the facility
manager.
It is essential that the facility manager (
Ä
Chapter
2.9.1 ‘Qualified staff’ on page 14) reads and fully
understands this manual before starting any work. The
basic prerequisite for safe working is to comply with the
safety notes and all instructions in this manual.
The local regulations for health and safety at work and
the general safety regulations for the area of application
of the air handling unit also apply.
Illustrations in this manual are mainly for information
and may differ from the actual design of the air handling
unit.
Copyright
This document, including all illustrations, is protected by
copyright and pertains only to the corresponding unit.
Any use without our consent may be an infringement of
copyright, and the violator will be held liable for any
damage.
This applies in particular to:
Publishing content
Copying content
Translating content
Microcopying content
Saving content to electronic systems and editing it
TROX Technical Service
To ensure that your request is processed as quickly as
possible, please keep the following information ready:
Product name
TROX order number
Delivery date
Brief description of the fault
Online www.troxtechnik.com
Phone +49 2845 202-400
Limitation of liability
The information in this manual has been compiled with
reference to the applicable standards and guidelines,
the state of the art, and our expertise and experience of
many years.
The manufacturer does not accept any liability for dam-
ages resulting from:
Non-compliance with this manual
Incorrect use
Operation or handling by untrained individuals
Unauthorised modifications
Technical changes
Use of non-approved replacement parts
The actual scope of delivery may differ from the infor-
mation in this manual for bespoke constructions, addi-
tional order options or as a result of recent technical
changes.
The obligations agreed in the order, the general terms
and conditions, the manufacturer's terms of delivery,
and the legal regulations in effect at the time the con-
tract is signed shall apply.
We reserve the right to make technical changes.
Defects liability
For details regarding defects liability please refer to
Section VI, Warranty Claims, of the Delivery and Pay-
ment Terms of TROX GmbH.
The Delivery and Payment Terms of TROX GmbH are
available at www.troxtechnik.com.
Other applicable documentation
In addition to these instructions, the following docu-
ments apply:
Order confirmation
Air handling unit data sheet from TROX GmbH
Product drawings
Data sheets for components from other suppliers, if
any
Circuit diagram for the air handling unit
Additional drawings, if any
X-CUBE compact operating manual
Installation and commissioning manual for X-CUBE
compact accessories
Supplemental instructions
Air handling unit X-CUBE compact 3
1 Overview............................................................. 5
1.1 Supply package........................................... 6
1.2 AHU labelling............................................... 6
2 Safety.................................................................. 7
2.1 Symbols used in this manual....................... 7
2.2 Correct use.................................................. 7
2.3 Safety signs................................................. 8
2.4 Safeguards.................................................. 9
2.5 Securing the unit against being switched
on accidentally........................................... 10
2.6 Work areas and hazardous areas.............. 11
2.7 Residual risks............................................ 11
2.7.1 General workplace hazards.................... 11
2.7.2 Electric shock hazards........................... 12
2.7.3 Hazards from the hydraulic system........ 12
2.7.4 Hazards from high temperatures............ 12
2.7.5 Hazardous substances and operating
fluids....................................................... 13
2.7.6 Fire hazards........................................... 13
2.8 System owner's responsibility................... 13
2.9 Personnel.................................................. 14
2.9.1 Qualified staff.......................................... 14
2.9.2 Unauthorised persons............................ 15
2.10 Personal protective equipment................ 15
2.11 Environmental protection......................... 16
2.12 Measures to take if a harmful substance
has been released................................... 16
3 Functional description.................................... 17
3.1 Overview.................................................... 17
3.2 Function of the air handling unit................ 18
3.3 Components.............................................. 18
3.4 Control....................................................... 19
3.5 Accessories............................................... 19
3.6 Connections and interfaces....................... 21
3.7 Operating modes....................................... 22
3.8 Operating and display elements................ 22
3.8.1 Mains isolator......................................... 22
3.8.2 Inspection access panels....................... 22
3.8.3 Touch panel............................................ 22
4 Operation.......................................................... 24
4.1 Safety notes regarding operation.............. 24
4.2 Emergency switch-off................................ 24
4.3 Switch-off in the event of a fire.................. 24
4.4 Preparing a (re)start.................................. 24
4.5 Starting the air handling unit...................... 25
4.6 Checks during operation........................... 25
4.7 Tips for operation....................................... 25
4.8 Configuring the AHU................................. 26
4.8.1 Configuration with the touch panel......... 26
4.8.2 Configuration with the web interface...... 31
4.8.3 Configuration with the digital control
panel....................................................... 46
4.9 Switching the AHU off................................ 47
4.10 After shutdown........................................ 47
5 Maintenance..................................................... 48
5.1 Safety notes regarding maintenance......... 48
5.2 Securing the unit against being switched
on accidentally........................................... 49
5.3 Maintenance plan...................................... 50
5.4 Maintenance.............................................. 55
5.4.1 Opening the inspection access panels... 55
5.4.2 Checking the filter element for con-
tamination............................................... 55
5.4.3 Cleaning the AHU................................... 55
5.4.4 Replacing the filter element............. 58
5.5 After maintenance..................................... 60
6 Faults................................................................ 61
6.1 Safety notes regarding troubleshooting..... 61
6.2 X-CUBE control alarms............................. 62
6.3 List of faults............................................... 64
6.4 Troubleshooting......................................... 70
6.5 After troubleshooting................................. 70
7 Replacement parts.......................................... 71
7.1 Safety notes regarding replacement
parts........................................................... 71
7.2 Ordering replacement parts....................... 71
8 Accessories..................................................... 72
9 Disassembly and disposal.............................. 73
9.1 Safety notes regarding disassembly and
disposal..................................................... 73
9.2 Disassembly.............................................. 74
9.3 Disposal..................................................... 74
10 Technical data.................................................. 75
10.1 Dimensions and weights......................... 75
10.2 Data sheet............................................... 77
10.3 Operating conditions............................... 78
11 FAQ................................................................... 79
12 Glossary........................................................... 81
13 Index................................................................. 82
Appendix.......................................................... 84
A Declaration of conformity............................. 85
B List of alarms................................................ 86
C Data sheets.................................................. 94
D Product information according to Commis-
sion Regulation (EU) No. 1253/2014,
Annex V...................................................... 114
Table of contents
Air handling unit X-CUBE compact4
1 Overview
Unit with rotary heat exchanger
Fig. 1: Unit with rotary heat exchanger
1 Multileaf damper
2 Extract air fan
3 Fan IO
4 Controls for rotary heat exchanger
5 X-CUBE control
6 Extract air filter
7 Supply air fan
8 Rotary heat exchanger
9 Outdoor air filter
10 Noise insulating connector
ABL (ETA) Extract air
AUL (ODA) Outdoor air
FOL (EHA) Exhaust air
ZUL (SUP) Supply air
Overview
Air handling unit X-CUBE compact 5
Unit with plate heat exchanger
Fig. 2: Unit with plate heat exchanger
1 Multileaf dampers
2 Outdoor air filter
3 Plate heat exchanger
4 X-CUBE control
5 Extract air filter
6 Supply air fan
7 Fan IO
8 Extract air fan
9 Noise insulating connector
ABL (ETA) Extract air
AUL (ODA) Outdoor air
FOL (EHA) Exhaust air
ZUL (SUP) Supply air
1.1 Supply package
Number Designation
1 Air handling unit
1 Operating manual
1 Transport and installation manual
1 Attachments, accessories and installation
material, if any
1 Loading equipment, if required
1.2 AHU labelling
Eco label
The energy efficiency of the AHU has been certified to
EUROVENT,
Ä
Appendix ‘Data sheets’ on page 94.
For more information see
http://www.eurovent-certification.com
Overview
AHU labelling
Air handling unit X-CUBE compact6
2 Safety
2.1 Symbols used in this manual
Safety notes
Symbols are used in this manual to alert readers to
areas of potential hazard. Signal words express the
degree of the hazard.
Comply with all safety instructions and proceed carefully
to avoid accidents, injuries and damage to property.
DANGER!
Imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING!
Potentially hazardous situation which, if not avoided,
may result in death or serious injury.
CAUTION!
Potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
NOTICE!
Potentially hazardous situation which, if not avoided,
may result in property damage.
ENVIRONMENT!
Environmental pollution hazard.
Tips and recommendations
Useful tips and recommendations as well as informa-
tion for efficient and fault-free operation.
Specific safety notes
The following symbols are used in safety notes to alert
you to specific hazards:
Warning signs Type of danger
Warning – hand injuries.
Warning – high-voltage.
Warning - danger of
falling.
Warning – danger zone.
Additional markers
In order to highlight instructions, results, lists, refer-
ences and other elements, the following markers are
used in this manual:
Marker Explanation
1., 2., 3. ...
Step-by-step instructions
ðResults of actions
References to sections in this
manual and to other applicable
documents
Lists without a defined sequence
[Switch] Operating elements (e.g. push but-
tons, switches), display elements
(e.g. LEDs)
‘Display’ Screen elements (e.g. buttons or
menus)
2.2 Correct use
The TROX X-CUBE air handling unit is designed exclu-
sively for the treatment of air, i.e. transporting, filtering,
heating, cooling, humidifying and dehumidifying air.
Correct use also involves complying with all the informa-
tion provided in this manual.
Any use that goes beyond the correct use or any dif-
ferent use of the unit is regarded as incorrect use.
The system owner is solely responsible for all damages
resulting from incorrect use.
Safety
Correct use
Air handling unit X-CUBE compact 7
Incorrect use
WARNING!
Danger due to incorrect use!
Incorrect use of the air handling unit can lead to dan-
gerous situations.
Do not use outdoors without sufficient protection
against the effects of weather.
Do not use in rooms with potentially explosive
atmospheres.
Do not use in rooms with conductive dusts.
Do not use in rooms with strong electromagnetic
fields
Do not use in rooms with aggressive room air
components, e.g. sand.
Do not use in wet areas.
Do not use for applications or in environments
that do not meet the design specifications (see
TROX data sheet for the air handling unit).
Do not use as a structural element or as a roof
for a building.
Do not use as a smoke extract system in the
event of a fire.
2.3 Safety signs
The following symbols and signs are usually found in
the work area. They apply to the very location where
they are found.
WARNING!
Danger due to illegible signage!
Over time, stickers and signs may fade or become
otherwise illegible, meaning that hazards cannot be
identified and necessary operating instructions
cannot be followed. There is then a risk of injury.
Ensure that all of the safety, warning and oper-
ating information is clearly legible.
Replace illegible signs or stickers immediately.
Earthing
You find this sticker on the electrical console and at all
equipotential bonding connection points of the AHU, see
Ä
‘Equipotential bonding’ on page 9.
Electrical voltage
Only skilled qualified electricians must work on AHU
components and in internal spaces with this sign.
Unauthorised persons must not enter areas, open cabi-
nets or work on components where an electrical voltage
is present and which are hence marked with this
symbol.
Fan run down time
This sticker is found below the mains isolator on the
operating side.
Switch off the mains isolator before you open an inspec-
tion access panel. Then wait for at least 2 minutes until
the fan has come to a standstill.
Risk to life from charges stored in fan capacitors!
This sticker is found on each fan motor.
Fans contain capacitors, which may hold electrical
charges even after power is turned off. Before you start
working on a fan, disconnect the power supply. Then
wait for 5 minutes to ensure that the capacitors have
become fully discharged. Only skilled qualified electri-
cians are allowed to work on fan motors.
Safety
Safety signs
Air handling unit X-CUBE compact8
Hot surfaces on the rotary heat exchanger motor
The surfaces of the rotary heat exchanger motor can
get very hot during operation. Skin contact with hot sur-
faces causes severe skin burns.
Before you start working, make sure that all surfaces
have cooled down to ambient temperature.
2.4 Safeguards
Defective safeguards
WARNING!
Risk to life from defective safeguards!
The mains cable between the utility grid and the
mains isolator carries a hazardous electrical voltage.
Defective or disabled safeguards can cause serious
or even fatal injuries.
Do not disable or bypass any safeguards.
AHU casing
The AHU casing is made from steel panels with duplex
powder coating on all sides. This construction ensures
that no parts can be ejected from the unit in case of a
fault. This construction also protects the interior of the
AHU from environmental effects.
Mains isolator
Fig. 3: Mains isolator
The mains isolator (Fig. 3) is located on the operating
side of the air handling unit. When you turn the mains
isolator to '0', the supply voltage to the AHU is immedi-
ately switched off.
You can lock the mains isolator in the '0' position (with a
padlock) to secure it against being switched on acciden-
tally so that you can safely work on the respective com-
ponent (e.g. fan).
Equipotential bonding
A skilled qualified electrician has to connect the AHU to
the local earth bar; this is done as part of installation.
Equipotential bonding prevents electrostatic ignition
hazards.
Motor protection switch
Motor protection switches are safety devices for
switching, protecting and isolating motors or actuators
on electric circuits. Motor protection switches protect
motors against destruction due to overload, short cir-
cuits, locking during start-up, or failure of a live wire in
three-phase systems. They also have a thermal tripping
mechanism and an electromechanic tripping mecha-
nism (short circuit protection). The motor protection
switches are located in the electrical console.
Compression latch
Fig. 4: Compression latch
The inspection access panels are fitted with compres-
sion latches (Fig. 4/1). Turning the latch moves the
tongue (Fig. 4/2) first into closing position and then in
axial direction (Fig. 4/arrow) so that the contact pres-
sure is increased. This ensures that the inspection
access panels are securely closed and that no air
escapes from the AHU.
Safety
Safeguards
Air handling unit X-CUBE compact 9
2.5 Securing the unit against being
switched on accidentally
Securing the unit against being switched on acci-
dentally
WARNING!
Risk to life from unauthorised people starting the
unit or from people starting the unit accidentally!
If someone who is not authorised starts the unit, or if
someone starts the unit accidentally, people could be
seriously or even fatally injured.
Before you switch on the unit, make sure that
Nobody is inside the AHU.
all inspection access panels have been closed
no tools or materials have been left inside the
AHU
1. Use the mains isolator to switch off the AHU.
Fig. 5: Securing the mains isolator
2.
WARNING!
Electric shock hazard!
The power cable which connects the AHU to
the mains holds electrical charges even after
power is turned off.
Switch off the power supply to the AHU by turning
the mains isolator to '0'.
3. Secure the mains isolator with a padlock (Fig. 5).
4. Keep the key in a safe place.
5. Cover the mains isolator with a notice informing
people that work is in progress.
Safety
Securing the unit against being switched on accidentally
Air handling unit X-CUBE compact10
2.6 Work areas and hazardous areas
Fig. 6: Hazardous areas
Work areas
Hazardous area
Areas from where you can access fans, electric air heaters and switch cabinets are hazardous areas. You can
access these hazardous areas only after you open an inspection access panel.
Before installation is complete, open air inlets and outlets are also considered hazardous areas.
2.7 Residual risks
The air handling unit is a state-of-the-art product and
meets current safety requirements. Residual risks
cannot be excluded, however, and you should proceed
with caution. This section describes the residual risks
that have been identified in a risk assessment.
Always observe the safety notes provided in the fol-
lowing chapters of this manual to reduce health hazards
and prevent any hazardous situations.
2.7.1 General workplace hazards
Working at height
WARNING!
Risk of a fall when you work at height!
Working at height without using any fall protection
equipment, or using unsuitable or damaged equip-
ment to get up to where you work at height, may lead
to yourself or others falling from height; people on
the ground may be at risk from falling parts or tools.
This can cause serious or even fatal injuries.
Only use equipment that is suitable, stable and
strong enough for the job, maintained and
checked regularly.
Stop materials or objects from falling.
Wear safety shoes, protective clothing and a
hard hat.
Wear a safety harness.
Safety
Residual risks > General workplace hazards
Air handling unit X-CUBE compact 11
Leaks
CAUTION!
Risk of injury from slipping on a contaminated
floor!
If a machine or component leaks, liquids may be get-
ting onto the floor. People could slip and injure them-
selves.
Remove any liquids on the floor quickly.
Wear non-slip safety shoes.
Note the safety data sheets provided by the
liquid manufacturers.
Attach warning notices and mandatory action
signs wherever liquids may get onto the floor.
2.7.2 Electric shock hazards
Electric current
DANGER!
Danger of death due to electric current!
Danger of electric shock! Do not touch any live com-
ponents! Damaged insulation or damaged parts are
a life threatening hazard.
Have work on the electrical system carried out
only by skilled qualified electricians.
If the insulation is damaged, disconnect the
power supply immediately and have the insula-
tion repaired.
Before you start working on electric systems and
equipment, switch off the supply voltage and
secure it against being switched on accidentally.
Comply with the following safety rules:
Switch off the air handling unit at the local
isolator and at the mains isolator (provided
by others)
Secure it against being switched on acciden-
tally.
Disconnect the AHU from the mains power
supply for the building.
Ensure that no voltage is present.
Connect to the earth; short circuit connection.
Either cover nearby parts that carry a voltage
or install barriers.
Do not bypass or disable any circuit breakers. Be
sure to maintain the correct current rating when
you replace a circuit breaker.
Ensure that live parts do not come into contact
with moisture. Moisture can cause a short circuit.
Stored charges
DANGER!
Risk to life from charges stored in capacitors!
Many components contain capacitors, which may
hold electrical charges even after power is turned off.
Contact with these components can result in serious
or fatal injuries.
Before you start working on any component that
contains capacitors, disconnect the component
from the power supply. Then wait for 10 minutes
to ensure that the capacitors have become fully
discharged.
2.7.3 Hazards from the hydraulic system
Jet of liquid from a defective hydraulic system
DANGER!
Risk to life from high pressure fluid injection!
If a hose or a pipe or an AHU component becomes
defective, a jet of coolant, refrigerant or compressor
oil under pressure may escape. The jet of liquid can
cause serious injuries as well as frostbite and burns.
Do not stand or hold objects in the path of a jet of
liquid. Keep people away from the hazardous
area.
Immediately initiate an emergency stop. If neces-
sary, initiate further measures to reduce the pres-
sure and stop the jet of liquid.
Remove escaping liquids and dispose of them
correctly.
Have any defective components repaired imme-
diately.
2.7.4 Hazards from high temperatures
Hot surfaces
WARNING!
Risk of injury from hot surfaces!
The surfaces of the heating coil can get very hot
during operation. Skin contact with hot surfaces
causes severe skin burns.
Wear heat-resistant protective clothing and
gloves whenever you work near a potentially hot
surface.
Before you start working, make sure that all sur-
faces have cooled down to ambient temperature.
Safety
Residual risks > Hazards from high temperatures
Air handling unit X-CUBE compact12
2.7.5 Hazardous substances and oper-
ating fluids
Operating fluids with glycol
WARNING!
Health risk from operating fluids that contain
glycol!
The operating fluids in the heating coil and cooling
coil contain glycol, which can damage your health if it
comes into contact with your skin, if you swallow it or
if you inhale the vapour or mist.
Avoid contact with operating fluids that contain
glycol.
Work must only be carried out by HVAC techni-
cians.
Do not eat, drink or smoke while handling oper-
ating fluids that contain glycol.
Wash your hands when you interrupt or finish
your work.
If you have come into contact with an operating
fluid that contains glycol, follow the first aid
instructions given on the safety data sheet for the
operating fluid.
When you have to handle an operating fluid that
contains glycol, wear the personal protective
equipment specified in the safety data sheet for
the operating fluid.
Lubricants
WARNING!
Health risk from lubricants!
Contact with lubricants can induce allergies and skin
irritation.
Wear protective gloves when handling lubricants.
Be careful not to swallow lubricants or inhale the
vapours.
If any lubricant has got into your eyes, rinse your
eyes thoroughly with plenty of water and seek
medical attention if necessary.
If your skin has come into contact with any lubri-
cant, wash your hands thoroughly with plenty of
water and soap.
Comply with the safety data sheets provided by
the lubricant manufacturer.
2.7.6 Fire hazards
Fire protection
WARNING!
Risk of injury from insufficient or inadequate fire-
fighting!
If there is a fire and the fire extinguisher is not in
working order or is unsuitable for the class of fire,
this can result in serious or even fatal injuries and
considerable damage to property.
Make sure that all fire extinguishers are suitable
for the expected class of fire.
Check fire extinguishers every 2 years to ensure
that they are in working order.
Refill each fire extinguisher after it has been
used.
Use only extinguishing agents and replacement
parts that comply with the information specified
on the fire extinguisher.
If you have to use a fire extinguisher, make sure
you know how to use it safely (see instructions
on the extinguisher).
Damaged fan parts
WARNING!
Risk of fire from damaged fan parts!
Grinding rotors or overheating bearings can cause a
fire and eventually serious or even fatal injuries.
Do not put a damaged or defective fan into oper-
ation.
The power consumption must not exceed the
specified nominal current.
Make sure that the maximum motor speed is not
exceeded.
2.8 System owner's responsibility
System owner
The system owner is a natural or legal person who for
commercial or business purposes owns or manages the
air handling unit or allows third parties to use or operate
it, but continues to bear legal responsibility for the safety
of users, staff or third parties while the product is in use.
System owner's obligations
The unit is intended for commercial use. The system
owner is therefore subject to the legal obligations of
occupational health and safety regulations.
Safety
System owner's responsibility
Air handling unit X-CUBE compact 13
In addition to the safety notes in this manual, the appli-
cable regulations for safety, accident prevention and
environmental protection must also be complied with.
In particular:
The system owner must be aware of the applicable
occupational health and safety regulations and carry
out a risk assessment to determine any additional
hazards that may exist or result from the specific
working conditions at the installation location of the
air handling unit. The system owner has to create
operating instructions for the air handling unit that
reflect the results of this risk assessment.
The system owner has to ensure, throughout the
entire operating period of the air handling unit, that
these operating instructions conform to applicable
standards and guidelines; in case of any deviation,
the system owner has to adapt the instructions.
The system owner must secure the air handling unit
to prevent access by unauthorised individuals.
The system owner must clearly define the responsi-
bilities for operation, maintenance, cleaning, trouble-
shooting and removal.
The system owner has to ensure that all individuals
who handle or use the air handling unit have read
and understood this manual.
The system owner must regularly provide training
for the personnel and inform them of any dangers.
The system owner must provide the employees with
the required personal protective equipment.
The system owner must ensure that the mainte-
nance intervals specified in this manual are
observed.
The system owner must have all safeguards tested
regularly to ensure that they are functional and com-
plete.
The system owner must observe the local fire regu-
lations.
The system owner must document and permanently
save the control matrix on which commissioning is
based. The system owner must save both a digital
version and a hardcopy of the initial version of the
control matrix.
The system owner must document and save any
changes to the control matrix.
Hygiene requirements
The system owner has to comply with the local regula-
tions and harmonised standards for hygiene require-
ments. This includes compliance with
specific maintenance and inspection intervals for
AHUs
specifications for connected ducts and air terminal
devices
2.9 Personnel
2.9.1 Qualified staff
Qualification
The work described in this manual has to be carried out
by individuals with the qualification, training, knowledge
and experience described below:
Facility manager
Facility managers have been instructed so that they are
able to avoid any potential hazards related to the work
under consideration. Facility managers must not carry
out any jobs beyond regular operation unless explicitly
stated in this manual and unless the system owner has
specifically agreed to them. Instruction is provided by
the HVAC contractor when the system is handed over.
Facility managers are responsible for cleaning the unit,
for carrying out functional tests and regular checks, for
maintenance and for smaller adjustments.
HVAC technician
HVAC technicians are individuals who have sufficient
professional or technical training in the field they are
working in to enable them to carry out their assigned
duties at the level of responsibility allocated to them and
in compliance with the relevant guidelines, safety regu-
lations and instructions. HVAC technicians are individ-
uals who have in-depth knowledge and skills related to
HVAC systems; they are also responsible for the profes-
sional completion of the work under consideration.
HVAC technicians are individuals who have sufficient
professional or technical training, knowledge and actual
experience to enable them to work on HVAC systems,
understand any potential hazards related to the work
under consideration, and recognise and avoid any risks
involved.
Hygiene inspector
Hygiene inspectors are individuals who have sufficient
professional or technical training, knowledge and actual
experience to enable them to carry out hygiene inspec-
tions on air handling units. Hygiene inspectors have
undergone additional training in the fields of air hygiene
and indoor air quality.
Hygiene inspectors have been trained in the field of air
hygiene and indoor air quality, and they know the rele-
vant standards and guidelines.
Skilled qualified electrician
Skilled qualified electricians are individuals who have
sufficient professional or technical training, knowledge
and actual experience to enable them to work on elec-
trical systems, understand any potential hazards related
to the work under consideration, and recognise and
avoid any risks involved.
Safety
Personnel > Qualified staff
Air handling unit X-CUBE compact14
Any work has to be carried out by individuals who can
be expected to carry out their assigned duties reliably.
Individuals whose reaction time is delayed due to
alcohol, drugs or other medication must not carry out
any work.
Passwords
The web server of the AHU is password protected to
prevent unauthorised individuals from entering or
changing data (see
Ä
Chapter 4.8.2.1 ‘Logging in to
the web server’ on page 31).
Instruction
System owners must regularly instruct their personnel.
The instruction procedure has to be documented for fur-
ther reference.
At least the following details have to be documented:
Date of instruction
Names of persons being instructed
Type of instruction
Name of instructor
Signature of person being instructed
2.9.2 Unauthorised persons
WARNING!
Risk to life! Unauthorised access to the haz-
ardous area and work area must be prevented!
Unauthorised persons who do not fulfil the require-
ments specified here are usually not aware of the
dangers in the work area. There is a risk to life and
limb for unauthorised people.
Keep unauthorised persons away from haz-
ardous areas and work areas.
Instruct these persons to leave the hazardous
area or work area.
Stop work while unauthorised persons are
present in the hazardous area or work area.
2.10 Personal protective equipment
Personal protective equipment is equipment that pro-
tects the user against health or safety risks at work.
Personal protective equipment must be worn for various
types of work; the protective equipment required is
listed in this manual together with the description of
each type of work.
Description of personal protective equipment
Hearing protection
Hearing protection protects against hearing damage
resulting from noise exposure.
Industrial safety helmet
Industrial safety helmets protect the head from falling
objects, swinging loads, and impacts with stationary
objects.
Protective clothing
Protective clothing is close fitting, with low tear resist-
ance, close fitting sleeves, and no projecting parts. It
prevents entanglement in moving machinery.
Do not wear jewellery.
Protective gloves
Protective gloves are used to protect hands from fric-
tion, abrasions, punctures, or deeper injuries.
Safety harness
The safety harness protects personnel from falling when
there is an increased risk of falling. The risk of falling is
increased when certain height differences are exceeded
and the workspace is not secured by a railing.
The safety harness must be worn in such a way that the
safety rope is connected to the safety harness and to a
secure attachment point; provide shock absorbers if
necessary.
Safety harnesses must only be used by personnel who
have been specifically trained to use them.
Safety
Personal protective equipment
Air handling unit X-CUBE compact 15
Safety shoes
Safety shoes protect the feet against crushing, falling
parts, and slipping on slippery ground.
Safety goggles
Safety goggles protect the eyes from flying particles and
liquid splashes.
2.11 Environmental protection
NOTICE!
Risk of harm to the environment due to the incor-
rect handling of hazardous materials and sub-
stances.
Many substances are hazardous. If you handle them
incorrectly or dispose of them incorrectly, they can
considerably harm the environment.
If you have to handle or dispose of substances
that can harm the environment, follow the
instructions below.
If any hazardous substances have escaped to
the environment, immediately take suitable
measures to avoid further damage. If you are in
doubt, inform the local authorities about the
damage and enquire about suitable measures to
be taken.
The following substances and materials which are
hazardous to the environment are used in this
product:
Coolant, glycol
Coolants may contain substances that are toxic and
pose a hazard to the environment. They must not be
released into the environment. Commission a specialist
disposal company to dispose of hazardous substances
and materials.
Only use on of the following glycols for the air handling
unit:
Propylene glycol
Ethylene glycol
Lubricants
Lubricants such as greases and oils contain toxic sub-
stances. Lubricants must not be released into the envi-
ronment. Commission a specialist disposal company to
dispose of hazardous substances and materials.
2.12 Measures to take if a harmful
substance has been released
Coolant, glycol
Coolants that contain glycol are hazardous, so please
note:
Personal safety:
Bring people to safety.
Wear protective equipment.
Provide sufficient ventilation in work areas, and
extract harmful substances.
Do not inhale vapours or aerosols. Avoid contact
with the eyes and skin.
Environmental protection:
Harmful substances must not enter sewerage sys-
tems or bodies of water. Use collection devices.
Use sand, earth or a similar absorbent material to
absorb any spills, and fill the contaminated material
into a container so that it can be safely disposed of.
If a hazardous substance has been released to a
body of water or into the sewerage system, immedi-
ately inform the local authorities.
Comply with the safety data sheet provided by the man-
ufacturer.
Lubricants
Comply with the safety data sheet provided by the man-
ufacturer.
Safety
Measures to take if a harmful substance has been released
Air handling unit X-CUBE compact16
3 Functional description
3.1 Overview
Fig. 7: X-CUBE compact with rotary heat exchanger
1 Multileaf damper
2 Extract air fan
3 Fan IO
4 Controls for rotary heat exchanger
5 X-CUBE control
6 Extract air filter
7 Supply air fan
8 Rotary heat exchanger
9 Outdoor air filter
10 Noise insulating connector
ABL (ETA) Extract air
AUL (ODA) Outdoor air
FOL (EHA) Exhaust air
ZUL (SUP) Supply air
Functional description
Overview
Air handling unit X-CUBE compact 17
Fig. 8: X-CUBE compact with plate heat exchanger
1 Multileaf dampers
2 Outdoor air filter
3 Plate heat exchanger
4 X-CUBE control
5 Extract air filter
6 Supply air fan
7 Fan IO
8 Extract air fan
9 Noise insulating connector
ABL (ETA) Extract air
AUL (ODA) Outdoor air
FOL (EHA) Exhaust air
ZUL (SUP) Supply air
For technical data see
Ä
Chapter 10 ‘Technical data’ on page 75.
3.2 Function of the air handling unit
General function
The AHU consists of several casing units with compo-
nents. The AHU is used for one or several air treatment
functions:
Circulation
Filtering
Heating
Cooling
Heat recovery
Humidification
Dehumidification
3.3 Components
Centrifugal fan
The centrifugal fan moves air through the AHU and the
entire ventilation system.
The chamber with the centrifugal fan is a hazardous
area; the inspection access panels are marked accord-
ingly and allow access for authorised individuals only.
Before you access the centrifugal fan, use the local iso-
lator to switch off the air handling unit and secure it
against being switched on accidentally.
Filter
Filters are used to separate contaminants from the out-
door air and extract air. The supply air filter protects the
AHU and the ventilation system from dust particles in
the outdoor air. The extract air filter protects the AHU
from contaminated extract air.
The filter class that should be used depends on the
application of the AHU. A high-efficiency filter not only
separates contaminants from the air, it also prevents
allergens, such as pollen or spores in the outdoor air,
from getting into the indoor air. This helps to prevent or
at least minimise allergic reactions in human beings.
It is hence essential to keep filter media in an AHU dry,
clean and hygienically safe.
Functional description
Components
Air handling unit X-CUBE compact18
The level of contamination of filters is monitored by a
differential pressure sensor in each Fan IO The pres-
sure is measured both upstream and downstream of fil-
ters. The higher the differential pressure, the higher the
level of filter contamination. If the specified maximum
value is exceeded, you have to change the filter ele-
ment.
You can access the filter through an inspection access
panel.
'Filter' comprises:
Filter chamber
Filter frame
Filter medium
Multileaf dampers
Multileaf dampers are used to control or shut off airflows
in an AHU. You can access multileaf dampers through
an inspection access panel.
Rotary heat exchanger
The rotary heat exchanger transfers thermal energy
from the extract air flow to the supply air flow. Supply air
and extract air are alternately (counter flow) led past a
rotating storage mass. In the process the thermal
energy of the extract air is transferred to the storage
mass and then from the storage mass to the supply air.
You can access the rotary heat exchanger for mainte-
nance and cleaning through an inspection access panel.
Plate heat exchanger
The recuperative plate heat exchanger transfers thermal
energy from the extract air flow to the supply air flow.
Supply air and extract air are alternately (counter flow)
led past the stacked corrugated metal plates. In the
process the thermal energy of the extract air is trans-
ferred to the supply air.
Recuperative systems keep the supply air and extract
air completely separate; no mixing occurs. This is why
plate heat exchangers are particularly suitable for appli-
cations where hygiene and air cleanliness are of utmost
importance.
You can access the plate heat exchanger for mainte-
nance and cleaning through an inspection access panel.
Noise insulating connector
The noise insulating connector is fitted between the
AHU and the ducting. It prevents the transmission of
noise and vibrations from the AHU to the ducting.
3.4 Control
X-CUBE control
X-CUBE control is the control system for the air han-
dling unit.
It controls all other integral and external control and
communication devices connected to the AHU. X-
CUBE control provides communication interfaces for
various peripheral devices and units.
The user interface of X-CUBE control allows you to con-
figure the entire system and to make adjustments.
You can access the user interface in two ways:
Touch panel (
Ä
‘Touch panel for the AHU’
on page 22)
Web server access via PC (provided by others)
(
Ä
Chapter 4.8.2.1 ‘Logging in to the web server
on page 31)
Fan IO
The Fan IO is used to provide control input to the fan
(supply air or extract air) and to multileaf damper actua-
tors; it is also used to monitor filters (differential pres-
sure). The Fan IO can also be used to control various
sensors, alarm systems and actuators for heating and
cooling systems. X-CUBE control and Fan IO communi-
cate via Modbus.
Rotary heat exchanger control module (RHX 2)
The rotary heat exchanger control module (RHX 2) con-
trols the rotary heat exchanger motor. X-CUBE control
and the rotary heat exchanger control module communi-
cate via Modbus.
Electrical console
The electrical console is an integral part of the AHU. It
supplies voltage to all electrical parts of the AHU.
Depending on the AHU construction variant, it may also
contain X-CUBE control inputs and outputs as well as
motor protection switches (
Ä
‘Motor protection switch’
on page 9) for the motors in the AHU.
3.5 Accessories
Various accessory modules are available to expand the
function of the X-CUBE compact air handling unit.
The modules have a spigot which allows for direct con-
nection to the X-CUBE compact, or they can be
installed in the ductwork and remote from the X-
CUBE compact.
Functional description
Accessories
Air handling unit X-CUBE compact 19
Heating coil module XCC-HM
Fig. 9: Heating coil module XCC-HM
If required, the heating coil module heats the supply air
to the specified setpoint value. The required heating
energy comes from an external energy source and is
transferred to the airflow by a heat exchanger.
You can access the heating coil for maintenance and
cleaning through an inspection access panel.
PWW heating coil module XCC-HD
Fig. 10: PWW heating coil module XCC-HD
If required, the PWW heating coil module heats the
supply air to the specified setpoint value. The required
heating energy comes from an external energy source
and is transferred to the airflow by a heat exchanger.
The heating coil module is intended for installation in a
duct.
Cooling coil module XCC-CM
Fig. 11: Cooling coil module XCC-CM
If required, the cooling coil module cools the supply air
to the specified setpoint value. The required cooling
energy comes from an external energy source and is
transferred to the airflow by a heat exchanger.
You can access the cooling coil module for maintenance
and cleaning through an inspection access panel.
Heating/cooling coil module XCC-HCM
Fig. 12: Heating/cooling coil module XCC-HCM
The heating/cooling coil module is a combination of
heating coil and cooling coil and provides the functions
of both those modules.
You can access the heating/cooling coil module for
maintenance and cleaning through an inspection access
panel.
Functional description
Accessories
Air handling unit X-CUBE compact20
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Trox X-CUBE compact Istruzioni per l'uso

Categoria
Condizionatori d'aria a sistema split
Tipo
Istruzioni per l'uso