Kampmann WZA Assembly instructions

WZA
► Assembly, installation and operating instructions
Keep these instructions in a safe place for future use!
Issue03/22EN
SAP No.1541809

3
Table of contents
1 General ................................................................................................................................. 5
1.1 About these instructions ........................................................................................................................ 5
1.2 Explanation of Symbols.......................................................................................................................... 5
2 Safety.................................................................................................................................... 6
2.1 Correct use............................................................................................................................................. 6
2.2 Limits of operation and use.................................................................................................................... 6
2.3 Risk from electrocution!......................................................................................................................... 7
2.4 Duties of the operator............................................................................................................................ 7
2.5 Personnel requirements - Qualifications ................................................................................................ 9
2.6 Personal Protective Equipment .............................................................................................................. 9
3 Transport, storage and packaging........................................................................................ 10
3.1 General transport instructions ............................................................................................................... 10
3.2 Scope of delivery.................................................................................................................................... 10
3.3 Storage .................................................................................................................................................. 11
3.4 Packaging .............................................................................................................................................. 11
4 Technical data....................................................................................................................... 12
5 Construction and function .................................................................................................... 13
5.1 Overview................................................................................................................................................ 13
5.2 Brief description..................................................................................................................................... 13
5.3 Wear parts list........................................................................................................................................ 14
6 Installation and wiring ......................................................................................................... 15
6.1 Connection options................................................................................................................................ 15
6.2 Requirements governing the installation site......................................................................................... 16
6.3 Minimum clearances.............................................................................................................................. 16
6.4 Installation............................................................................................................................................. 16
6.4.1 Installing the units..................................................................................................................................... 17
6.4.2 Installing the casing................................................................................................................................... 18
6.4.3 Connecting the DN50 pipework to the façade connection ........................................................................ 21
6.4.4 Aligning the supply air outlet .................................................................................................................... 22
7 Electrical connection............................................................................................................. 24
7.1 Maximum electrical rating values .......................................................................................................... 24
7.2 Power supply ......................................................................................................................................... 24
8 Pre-commissioning checks.................................................................................................... 25

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9 Commissioning...................................................................................................................... 26
10 Operation.............................................................................................................................. 27
11 Maintenance ......................................................................................................................... 28
11.1 Securing against reconnection ............................................................................................................... 28
11.2 Maintenance Schedule:.......................................................................................................................... 28
11.3 Maintenance work................................................................................................................................. 29
11.3.1 Replacing the filter. ................................................................................................................................... 29
11.3.2 Cleaning the enthalpic heat exchanger ..................................................................................................... 30
11.3.3 Clean the inside of the unit ....................................................................................................................... 32
12 Faults .................................................................................................................................... 34
12.1 Fault table.............................................................................................................................................. 34
12.2 Start-up after rectification of fault ......................................................................................................... 34
13 Certificates............................................................................................................................ 35

WZA
School ventilation
Assembly, installation and operating instructions
5
1 General
1.1 About these instructions
These instructions ensure the safe and efficient handling of this equipment. These instructions form an integral part of the
equipment and have to be kept in the direct vicinity of the equipment and available to personnel at all times.
All personnel must have carefully read through these instructions prior to commencing all work on the equipment. A funda-
mental prerequisite for safe working is compliance with all the stated safety instructions and other instructions contained in
this manual.
In addition all local occupational health and safety at work regulations apply, as do general safety provisions governing the
use of the equipment.
Illustrations in this guide are intended to provide a basic understanding and may differ from the actual model.
Ongoing tests and further developments may result in small variations between the unit supplied and the instructions.
1.2 Explanation of Symbols
WARNING!
This combination of symbol and signal word indicates a possible hazardous situation.
IMPORTANT NOTE!
It represents a potentially hazardous situation, which could lead to damage to property or for a measure to
optimise workflows.
IMPORTANT NOTE!
This symbol highlights useful hints, recommendations and information for efficient and trouble-free opera-
tion.

WZA
School ventilation
Assembly, installation and operating instructions
6
2 Safety
This section provides an overview of all important safety aspects to ensure optimum protection of personnel as well as safe
and trouble-free operation. In addition to the safety instructions in these operating instructions, the valid safety, accident pre-
vention and environmental protection regulations must be observed for the area of use of the unit. It is the duty of the oper-
ator to ensure that instructions relating to maintenance (e.g. relating to hygiene) are complied with.
Mains power supply/Mains power cable
Do not route close to heaters.
Do not route under heavy objects that could alter the cross-section of the mains power cable.
Only use the unit with the stated mains voltage! Incorrect connection to a mains power socket can lead to fire or electro-
cution.
Do not use the unit if the mains power plug or mains power cable are faulty or damaged.
De-energise the unit by disconnecting the plug before commencing maintenance work!
IMPORTANT NOTE!
Do not damage the unit by heavy loads!
Avoid heavy loads (this is not a seat), as this may damage the casing and can impair the operation of the
unit.
DANGER!
Avoid electric shocks and/or fire hazards!
Prevent liquids or flammable cleaning agents from penetrating the unit.
Do not clean the unit with water, flammable cleaning agents or other liquids.
2.1 Correct use
Intended use of the unit also includes adherence to these instructions.
Information in accordance with EN60335-1
This unit can be used by children aged 8 years or more and also by people with reduced physical, sensory or mental cap-
abilities or a lack of experience and knowledge, if they are supervised or have been instructed in the safe use of the unit
and the resulting dangers. Do not allow children to play with the unit. Do not allow children to clean and maintain the
unit without supervision.
This unit is not intended for permanent connection to the drinking water supply system.
This unit is intended for being accessible to the general public.
Any use beyond or other than the stated intended use is considered as misuse.
Any change to the unit or use of non-original spare parts will cause the expiry of the warranty and the manufacturer’s liabil-
ity.

WZA
School ventilation
Assembly, installation and operating instructions
7
2.2 Limits of operation and use
Operating voltage 230 V/ 50/60 Hz
Power/Current consumption On the type plate
Tab.1: Operating voltage
Variable Value Unit
Ambient temperature 5 – 40 °C
Max. relative air humidity 90 %
Air intake temperature -10 – 40 °C
IMPORTANT NOTE!
Warning of misuse!
In the event of misuse, as itemised below, there is a danger of limited or failing operation of the unit. En-
sure that the airflow can circulate freely.
Never operate the unit in humid areas, such as swimming pools, wet areas etc.
Never operate the unit in rooms with an explosive atmosphere.
Never operate the unit in aggressive or corrosive atmospheres (e.g. sea air).
2.3 Risk from electrocution!
DANGER!
Risk of fatal injury from electrocution!
Contact with live parts will lead to fatal injury from electrocution. Damage to the insulation or individual
components can lead to a fatal injury.
Only permit qualified electricians to work on the electrical system.
Immediately disconnect the system from the power supply and repair it in the event of damage to the in-
sulation.
Keep live parts away from moisture. This can cause a short circuit.
Properly earth the unit.

WZA
School ventilation
Assembly, installation and operating instructions
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2.4 Duties of the operator
Operator
The operator is the person who operates the unit for commercial or business purposes himself or arranges for a third party to
use it and bears the legal product responsibility for protection of the user, personnel or third parties during its operation.
Duties of the operator
The unit is operated in the commercial sector. The operator of the unit is therefore subject to the legal obligations concerning
occupational health and safety.
In addition to the safety instructions in these operating instructions, the valid safety, accident prevention and environmental
protection regulations must be observed for the area of use of the unit.
The following applies in particular:
The operator must be aware of the applicable health and safety regulations and determine in a risk assessment other
hazards that may arise from the special working conditions at the site of operation. The operator then has to implement
this in the form of operating instructions for the operation of the unit.
The operator must regulate and specify the responsibilities for installation, operation, troubleshooting, maintenance and
cleaning.
The operator must ensure that all staff who work on the unit have read and understood these instructions. In addition,
they must also train personnel and inform them of the possible dangers at regular intervals.
It is the responsibility of the operator to provide maintenance and repair personnel with the necessary personal protect-
ive equipment and advise them of the necessity to wear it.
Furthermore, the operator is responsible for ensuring that the equipment is always in perfect condition.
The following therefore applies:
The operator must ensure that the maintenance intervals described in this manual are adhered to.
Hygiene requirements
The operator must comply with the specifications in line with the pertinent legal standards and guidelines relating to hygiene
applicable at the installation site. This includes ensuring that
the pertinent maintenance and test intervals are complied with,
the requirements for air ducts and diffusers are complied with,
the predefined filter grades are complied with.

WZA
School ventilation
Assembly, installation and operating instructions
9
2.5 Personnel requirements - Qualifications
Expertise
The installation of this product requires specialist knowledge of heating, cooling, ventilation, installation and electrical engin-
eering. This knowledge, generally learned in professional training in one of the fields mentioned above, is not described sep-
arately.
Damage caused by improper installation is the responsibility of the operator or installer. The installer of these units should
have adequate knowledge of the following gained from specialist professional training
Safety and accident prevention regulations
Guidelines and recognised technical regulations, i.e. Association of German Electricians VDE regulations, DIN and EN
standards.
VDI 6022; maintenance personnel must be trained to Category B (possibly Category C) to comply with hygiene require-
ments (as required).
The installation, operation and maintenance of this unit must comply with the applicable laws, standards, provisions and reg-
ulations in the respective country and the current state of the art.
2.6 Personal Protective Equipment
Personal protective equipment is used to protect people from impaired safety and health when working with the unit. The ap-
plicable accident prevention regulations at the place of use apply in all cases.
Personnel have to wear personal protective equipment during maintenance and troubleshooting on and with the unit.

WZA
School ventilation
Assembly, installation and operating instructions
10
3 Transport, storage and packaging
3.1 General transport instructions
Check on delivery for completeness and transport damage.
Proceed as follows in the event of visible damage:
Do not accept delivery or only accept with reservations.
Record any transport damage on the transportation documents or on the transport company's delivery note.
Submit a complaint to the freight forwarder.
IMPORTANT NOTE!
Warranty claims can only be made within the applicable period for complaints. (More information is avail-
able in the T&Cs on the Kampmann website)
IMPORTANT NOTE!
Material damage caused by incorrect transport!
Units being transported can drop or topple over if transported wrongly. This can cause serious material
damage.
Proceed carefully when unloading the equipment on delivery and when transporting it on site and note
the symbols and instructions on the packaging.
Only use the holding points provided.
Only remove packaging shortly before assembling the unit.
3.2 Scope of delivery
IMPORTANT NOTE!
Check the scope of delivery!
Check the delivery for damage.
Check that the articles and type numbers are correct.
Is the delivery and number of items delivered correct?

WZA
School ventilation
Assembly, installation and operating instructions
11
3.3 Storage
Store packaging under the following conditions:
Do not store outdoors.
Store in a dry and dust-free place.
Store in a frost-free place.
Do not expose to aggressive media.
Protect from direct sunlight.
Avoid mechanical vibrations and shocks.
IMPORTANT NOTE!
Under certain circumstances, packages can carry storage instructions that exceed the requirements listed
here. Comply with these instructions accordingly.
3.4 Packaging
Handling packaging materials
IMPORTANT NOTE!
Dispose of packaging materials in line with the applicable statutory requirements and local regulations.

WZA
School ventilation
Assembly, installation and operating instructions
12
4 Technical data
Air volume flow [mm] 1000 800 600 400
Degree of temperature change 171 74 78 84
Degree of humidity change 257 61 66 72
Supply air temperature 217.0 17.5 18.2 19.2
Supply air relative humidity 37 36 35 33
Electrical power consumption 3312 176 100 56
Sound pressure level 439 35 29 22
Sound power level 51 47 41 34
Tab.2: Technical data, WZA
Components Weight [kg]
Functional unit 136
Enthalpic unit 136
Casing 110
1according to EN 308
2At outside air temperature 5 °C, 70% relative humidity; extract air temperature 22 °C, 30% relative humidity
3Power consumption of the optional electric heating coil (1 kW) is not included
4The sound pressure level was calculated with an assumed room insulation of 12 dB(A). This corresponds to a dis-
tance of 4 m, a room volume of 200 m³ and a reverberation time of 0.5 s (in accordance with VDI 2081).

WZA
School ventilation
Assembly, installation and operating instructions
13
5 Construction and function
5.1 Overview
1
2
2
3
4
4
5
Fig.1: WZA at a glance
1Control 2Locking flap with spring return motor
3Outside air filter ISO ePM1>55 % 4Backward-curved EC radial fan
5Enthalpic heat exchanger with heat and humidity recovery
5.2 Brief description
The WZA is a decentralised ventilation unit for acoustically sensitive rooms, such as classrooms and seminar rooms. Other ap-
plications include nursery schools, conference/meeting rooms and similar types of room.
WZA ventilates according to the air quality. A comfortable climate is created in the occupied zone, thanks to its special air
outlet and the induction of secondary air. The preconditioned outside air enters the room as supply air through a mixed air
diffuser.
The control monitors and controls the air volume flows, temperatures, air quality, filters and operating times. Additional
parameters are available on request.

WZA
School ventilation
Assembly, installation and operating instructions
14
5.3 Wear parts list
Figure Article Properties For use with Art. no.
ISO Coarse replacement
filter 1 set = 1 no. All WZA 683001020010
ISO replacement filter
ePM1>55% (F7) 1 set = 1 no. All WZA 683001020710

WZA
School ventilation
Assembly, installation and operating instructions
15
6 Installation and wiring
6.1 Connection options
The school ventilation unit WZA is available in four different connection versions as shown in the figures below. The connec-
tion versions are defined by the position of the outside air and exhaust air connection:
Connection on left side Connection on right side
Connection at top left Connection at top right
The construction and components included are identical for all units. The drawings and figures included in these instructions
relate to connection on the right side and left side.

WZA
School ventilation
Assembly, installation and operating instructions
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6.2 Requirements governing the installation site
Only install and assemble the unit if the following conditions are met:
Make sure that the floor is sufficiently load-bearing to withstand the weight of the unit.
Ensure that the unit is standing securely.
Ensure that the airflow can circulate freely.
6.3 Minimum clearances
min. 600
Fig.2: Recommended minimum distance to the façade
6.4 Installation
Appropriate technical lifting equipment or 4 people are required for installation.

WZA
School ventilation
Assembly, installation and operating instructions
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CAUTION!
Risk of injury from sharp metal housing!
The inner metal of the casing can have sharp edges.
Wear suitable protective gloves.
CAUTION!
Risk of injury from crushing!
WZA units have a high inherent weight with the result that there is a risk of hands being crushed when pla-
cing one unit on top of the other!
Keep hands away from the contact surfaces and use suitable lifting equipment when lowering the en-
thalpic unit onto the functional unit.
Perform all steps to install and set up the unit and fit the casing as shown in the video.
6.4.1 Installing the units
Remove the separate pack from the functional unit.
Set up the enthalpic unit using appropriate instruments (e.g. spirit level,
laser) to level it and compensate for any possible unevenness by adjusting
the height-adjustable feet.
Adhere the sealing strip to all ducts that come into contact with air.

WZA
School ventilation
Assembly, installation and operating instructions
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Fasten an appropriate lifting tool to the functional unit.
Position the functional unit on the enthalpic unit.
Remove any lifting tool used.
Use 4 self-locking screws (M8x12) to connect the functional unit and en-
thalpic unit to the corner profiles.
Use 4 earthing cables L= 300 mm to connect the functional unit and en-
thalpic unit to the corner profiles.
Loosen screw TXP 25 from the electrical cover panel and remove the panel.
Refit the casing once the unit has been reassembled.

WZA
School ventilation
Assembly, installation and operating instructions
19
6.4.2 Installing the casing
Note: The R and L labels indicate which casing elements are used for each unit:
R = right version
L = left version
The respective markings can be found on the packaging units.
1
2
3
4
5
6R
10
12
8R
11R
9R
7R
Fig.3: Installation of casing elements (example: unit, right version)
1Rear lower casing panel 2Rear upper casing panel
3Plinth panel, left 4Plinth panel, right
5Front plinth panel 6R Room-side lower casing panel
7R Window-side lower casing panel 8R Room-side upper casing panel
9R Window-side upper casing panel 10 Upper front panel
11R Upper casing panel 12 Air outlet
Install the casing elements one after each other in numerical order and connect with the earthing cables supplied.
Use 2 self-locking screws M8x12 to attach each casing element 3 – 9 to the front of the unit.
Use 2 self-locking screws M5x10 to attach casing element 10 to the front of the unit.
Use screws M5x10 TXP25 to attach each casing element 2 and 8 – 11 to the top of the unit.

WZA
School ventilation
Assembly, installation and operating instructions
20
Installing the service flaps (example: unit, right version).
16
13
15R
14R
13 Lower service panel 14R Right service door
15R Left service door 16 Control unit
Use 2 self-locking screws M5x10 to attach casing element 13 to the front of the unit.
Use 4 countersunk screws M6x16 to attach each casing element 14 and 15 to the front of the unit.