Trox Technik HESCO HFA User manual

Installation manual
Automatic extract air valve
Type HFA
Subject to change · All rights reserved ·
L-50-6-01e

Installation manual for automatic extract air valve
2
Contents
1. General information 2
2. Safety and correct use 3
General safety notes 3
Standards and guidelines 4
Repair and replacement parts 4
Environmental protection / disposal
Staff qualifications 4
Limitation of liability 4
Personal protective equipment 4
Correct use 4
3. Transport, storage and packaging 5
Delivery check 5
Transport on site 5
Storage 5
Packaging 5
4. Product description 6
Functional description 6
Special features HFA 6
Dimensions 6
5. Technical data 7
6. Installation 7
Components 7
Installation 7
Fixing the automatic extract air valve 7
On-site precautions 8
7. Electrical installation 8
Electrical connection 8
Connection diagram 8
8. Commissioning 9
Setting the volume flow rates 9
Performance diagram HFA 9
9. Maintenance 10
Maintenance and cleaning 10
1. General information
This installation manual describes the automatic extract air
valve type:
HFA
To ensure correct functioning of the automatic extract air valve,
it is essential to read the provided installation manual before
starting any work, and to comply with it. The manufacturer
does not accept any liability for any malfunction or damage
resulting from non-compliance with these instructions or non-
compliance with relevant statutory regulations. This installation
manual is intended for specialist consultants, developers, and
owners of the ventilation systems in which the automatic ex-
tract air valve is to be installed. This installation manual is also
intended for people conducting the following work:
- Transport and storage
- Installation
- Electrical connection
- Commissioning
- Maintenance
- Cleaning
For details on HFA, see:
- Brochure L-07-2-01d
The installation manual and the brochure can be downloaded
from
www.troxhesco.com.

Installation manual for automatic extract air valve
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2. Safety and correct use
General safety notes
VORSICHT!
Verletzungsgefahr an scharfen Kanten, Graten, spitzen
Ecken und dünnwandigen Blechteilen!
– Bei allen Arbeiten vorsichtig vorgehen.
– Schutzhandschuhe, Sicherheitsschuhe und
Schutzhelm tragen.
GEFAHR!
Stromschlag beim Berühren spannungsführender
Teile. Elektrische Ausrüstungen stehen unter
gefährlicher elektrischer Spannung.
Nichtbeachtung kann Tod, schwere Körperschäden
oder Sachschaden verursachen!
– An den elektrischen Komponenten dürfen nur
Elektrofachkräfte arbeiten.
– Vor Arbeiten an der Elektrik die Versorgungs-
spannung ausschalten.
WARNUNG!
Gefahr durch Fehlgebrauch! Fehlgebrauch des
Produktes kann zu gefährlichen Situationen führen.
Das Produkt darf nicht eingesetzt werden:
– in Ex-Bereichen.
– im Freien ohne ausreichenden Schutz gegen
Witterungseinflüsse.
– in Atmosphären, die planmässig oder ausserplan-
mässig aufgrund chemischer Reaktionen eine
schädigende und/oder Korrosion verursachende
Wirkung auf das Produkt ausüben.
WARNUNG!
Verletzungsgefahr bei unzureichender Qualifikation!
Unsachgemässer Umgang kann zu erheblichen Personen-
und Sachschäden führen.
– Alle Tätigkeiten nur durch dafür qualifiziertes Personal
in der Gebäudetechnik-Branche durchführen lassen.
VORSICHT!
Beschädigung des Produktes durch unsachgemässe
Behandlung! Gerät vor Inbetriebnahme auf Schäden
und Verunreinigung prüfen und beheben!
Unsachgemässer Umgang kann zu erheblichen
Sachschäden am Produkt führen.
– Keine säurehaltigen oder scheuernden Reinigungs-
mittel verwenden.
– Klebstoffe von Klebebändern können Farbschäden
verursachen.
– Unverhältnismässige Feuchtigkeit kann zu
Farbschäden und Korrosion führen.
– Nur ausdrücklich spezifizierte Reinigungsmittel,
Fette und Öle benutzen.

Installation manual for automatic extract air valve
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Standards and guidelines
For all work on the automatic extract air valve, the following
provisions and guidelines among others must be observed
- Product Safety Law (PrSG)
- EKAS provisions
The local regulations for health and safety at work and general
safety regulations also apply.
Repair and replacement parts
To maintain the function, use only original TROX HESCO
Schweiz AG replacement parts.
Environmental protection / disposal
To protect the environment keep the following in mind:
- Dispose of packaging for the automatic extract air valve in
an environmentally sound manner.
- The automatic extract air valve must be disposed of pro-
perly- by an authorised agent after its final
decommissioning.
- Dispose of electronic components according -
to the national electronic waste regulations.
Qualied sta
Skilled qualied electrician
Skilled qualified electricians are individuals who have sufficient
professional or technical training, knowledge and actual ex-
perience to enable them to work on electrical systems, under-
stand any potential hazards related to the work under conside-
ration, and recognise and avoid any risks involved.
Specialist personnel
Specialist personnel are individuals who have sufficient profes-
sional or technical training, knowledge and actual experience to
enable them to carry out their assigned duties, understand any
potential hazards related to the work under consideration, and
recognise and avoid any risks involved.
Limitation of liability
The information in this manual has been compiled with refe-
rence 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 damages
resulting from:
- Non-compliance of these instructions
- Improper use
- Operation or handling by untrained individuals
- Unauthorised modifications
The actual supply package may differ from the information in
this manual for special versions, additional order options or as
a result of recent technical changes.
Personal protective equipment
Personal protective equipment must be worn for any work in
order to reduce health or safety hazards to the minimum.
The appropriate protective equipment for a job must be worn
for as long as the job takes.
Industrial safety helmet
Industrial protective helmets protect the head from falling ob-
jects, suspended loads and knocks against
stationary objects.
Protective gloves
Protective gloves protect hands from friction, abrasions, punc-
tures, deep cuts, and direct contact with hot surfaces.
Safety shoes
Safety shoes protect the feet against crushing, falling parts,
and from slipping on slippery ground.
Correct use
The automatic extract air valve is used for central, energy-
saving extract air systems.

Installation manual for automatic extract air valve
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3. Transport, storage and packaging
Delivery check
Upon delivery, carefully remove the packaging and check the
unit for transport damage and completeness. In case of any
damage or an incomplete shipment, contact the shipping com-
pany and your supplier immediately. Put the product back into
its packaging after the delivery check to protect it from dust
and contamination.
Transport on site
Please note:
- When unloading the delivery and transporting on-site,
proceed with care and observe the symbols and notices-
on the packaging.
- Devices should preferably be transported to the installation
location in their
original packaging.
- Use only lifting and transport gear
designed for the required load.
- Always secure the load against tipping and falling.
- Cumbersome equipment should be transported with at least
two people to
prevent injury and damage.
Storage
Please note:
- Store the product only in its original packaging.
- Protect the product from the effects of weather.
- Protect the product from humidity, dust and contamination.
- Storage temperature: -10 °C to +30 °C..
- Relative humidity: 95 % max., no condensation
Packaging
Properly dispose of packaging material.
Befestigungs- und Montagematerial
Befestigungs- und Montagematerialien sind, soweit nicht
anders angegeben, kein Bestandteil der Lieferung und
müssen bauseits, abgestimmt auf die jeweilige Einbausitua-
tion beigestellt werden.

Installation manual for automatic extract air valve
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4. product description
Functional description
The automatic extract air valve HFA works with two volume
flow rates:
Basic volume ow rate
When the room to be ventilated is not in use, the damper
remains closed and only the basic volume flow rate V0 is
extracted. This basic volume flow rate V0 can be increased by
breaking out one or more plastic plugs in the damper.
Required volume ow rate
When the room to be ventilated is in use and the electro-ther-
mal damper actuator is activated by a switch contact typical
for this room, e.g. a light switch, the damper opens to the set
damper limit A, B, C or D in approx. 2-3 minutes. The volume
flow rate is thereby increased to the volume required. Once the
switch contact is interrupted, the damper remains open for ap-
prox. 5-10 minutes to ensure proper follow-up ventilation. The
damper then returns to its initial position and only the previous-
ly selected basic volume flow rate is extracted.
Dimensions
Special features of the HFA
- Depending on the building, heating energy
can be reduced by 10 – 30%
in terms of total consumption.
- The heating system can be designed to smaller dimensions.
- The automatic extract air valve HFA is suitable for use in all
buildings with
central extract air systems.
- The automatic extract air valve HFA works with two volume
flow rates:
Basic volume flow rate (can be selected)
Required volume flow rate (can be set)
- If required, the damper opens via an electro-
thermal actuator with an automatic delay (2-3 min.)
- To prevent contamination of the exhaust duct, there is
a fitted filter pad that can be easily replaced (commercially
available
filter).
- Assembly of the automatic extract air valve HFA is simple.
12
240
Ø 103
~52
5
163
~84
789 10
Ø 10
(13.5)
84
(97.5)
52
65.5
13.5
4
6
35 Ø 22
150
115 55 (35)
(90)
75
44
11
Typ: HFA / ATVC / TKR
Volt: 230~
Watt: 8 (60)
AB CD
IP54
12
1Main housing
2Cover
4Cable penetration (for flush mounting)
5Cable feed-through (for surface mounting)
6Electrical socket
7Fixing holes
8Junction box
9Electro-thermal actuator
10 Damper with volume flow rate plugs
12Pressure tap
12
240
Ø 103
~52
5
163
~84
789 10
Ø 10
(13.5)
84
(97.5)
52
65.5
13.5
4
6
35 Ø 22
150
115 55 (35)
(90)
75
44
11
Typ: HFA / ATVC / TKR
Volt: 230~
Watt: 8 (60)
AB CD
IP54
12

Installation manual for automatic extract air valve
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5. Technical data
Dimensions Length:
Width:
Height:
240 mm
163 mm
84 mm
Basic volume flow rate that can be
selected
depending on the negative pressu-
re and number of remaining plugs
Approx. 7-30m3/h
Required volume flow rate that can
be set
depending on the negative pressu-
re and damper limit
Approx. 30-100m3/h
Negative pressure range 20 to 100 Pa
Nominal voltage 230V~, 50Hz
Nominal power 8W
Note
The automatic extract air valve HFA can be connected to pipes of
Ø100 mm.
6. Installation
Components
1 Main housing
2Cover with integrated filter
3 Snap-fastener
4Cable penetration (for flush mounting)
5Cable feed-through (for surface mounting)
6Electrical socket
7Fixing holes Ø10
8Junction box
9 Electro-thermal actuator
10 Damper with volume flow rate plugs
11 4 plastic dowels Nr.5 x 25
12 4 washers Ø4.3 x 14
13 4 cross-head screws Ø3.5 x 32
Installation
Opening the cover
Press the snap-fastener and lift the cover out of the main
housing. Store safely so that it can later be placed in its original
packaging.
Fixing the automatic extract air valve
Fix the automatic extract air valve to the wall or ceiling using
the corresponding screws. Hole diameters of 10 mm in the
main housing enable precise positioning.
Drill hole plan > see packaging.
The automatic extract air valve can be mounted anywhere for
surface mounting electrification.

Installation manual for automatic extract air valve
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On-site precautions
7. Electrical installation
Electrical connection
The automatic extract air valve works with an electro-thermal
actuator, which has to be connected with a 2-pin cable to
230V/50Hz.
1.a For surface mounting: open the cable feed-through with
pliers.
1.b For flush mounting: feed the cable through this opening.
2. Loosen the electrical socket.
3. Loosen the grommet nut from the electrical socket.
4. Pull the cable through the grommet nut, then screw this
back into
the electrical socket.
5. Connect the cable to the luster terminal.
6. Screw the electrical socket back on again.
It must be possible to disconnect the unit from the mains after
installation, unless the unit is equipped with a switch to 24.3.
This can be done by making the plug accessible or by fitting a
switch into the fixed installation in compliance with the installa-
tion regulations.
Connection diagram
P = Phase
N = Neutral
E = Earth
Note
The automatic extract air valve can be controlled with a separate
switch or coupled with the light switch.
75
44
21
Ø 100
1Recess for HFA connection in frame wall
2The position of the hole for the cable penetration de-
pends on the installation orientation of the
GEFAHR!
Stromschlag beim Berühren spannungsführender
Teile. Elektrische Ausrüstungen stehen unter
gefährlicher elektrischer Spannung.
Nichtbeachtung kann Tod, schwere Körperschäden
oder Sachschaden verursachen!
– An den elektrischen Komponenten dürfen nur
Elektrofachkräfte arbeiten.
– Vor Arbeiten an der Elektrik die Versorgungs-
spannung ausschalten.

Installation manual for automatic extract air valve
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8. Commissioning
Setting the volume ow rates
Selecting the basic volume ow rate of the automatic extract air
valve
The basic volume flow rate can be increased by removing
the plastic plugs (from position 0 to position 1, 2, 3 or 4). This
can particularly be required in large rooms. For individual ba-
throoms and WCs, however, the volume flow rate is usually
not increased, i.e. no plug removed (position 0).
Setting the required volume ow rate of the automatic extract air
valve
The required volume flow rate can be restricted if needed.
The limits A, B, C or D can be selected according to the follow-
ing diagram.
Performance diagram HFA
Note
To simply measure the existing negative pressure, the valve
disc of the automatic extract air valve is equipped with a pres-
sure tap (M).
HFA 200
ps
Statischer Druckabfall ps[Pa]
Grundvolumenstrom ‡o
Volumenstrom [m³/h]
0 1 2 3 4
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
400
300
200
100
80
60
50
40
30
20
6 8 10 20 30 50 100 150
LwA
HFA 200
ps
Perte de charge statique ps[Pa]
Débit d'air de base ‡o
Débit d'air [m³/h]
0 1 2 3 4
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
400
300
200
100
80
60
50
40
30
20
6 8 10 20 30 50 100 150
LwA
HFA 200
ps
Static pressure drop ps[Pa]
Base air volumen rate ‡o
Air volumen rate [m³/h]
0 1 2 3 4
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
400
300
200
100
80
60
50
40
30
20
6 8 10 20 30 50 100 150
LwA
HFA 200
ps
Bedarfsvolumenstrom ‡
A B C D LwA
55 dB(A)
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
25 dB(A)
Volumenstrom [m³/h]
Statischer Druckabfall ps[Pa]
400
300
200
100
80
60
50
40
30
20
15 20 30 50 100 200 300 400
HFA 200
ps
Débit d'air nécessaire ‡
A B C D LwA
55 dB(A)
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
25 dB(A)
Débit d'air [m³/h]
Perte de charge statique ps[Pa]
400
300
200
100
80
60
50
40
30
20
15 20 30 50 100 200 300 400
HFA 200
ps
Required air volume rate ‡
A B C D LwA
55 dB(A)
50 dB(A)
45 dB(A)
40 dB(A)
35 dB(A)
30 dB(A)
25 dB(A)
Static pressure drop ps[Pa]
400
300
200
100
80
60
50
40
30
20
15 20 30 50 100 200 300 400
Air volume rate [m³/h]
Legend
0= Damper closed, all plugs in place
1= Damper closed, smallest plug removed
2= Damper closed, medium plug removed
3= Damper closed, largest plug removed
4= Damper closed, all plugs removed
LwA = sound power level tolerance ± 2dB[A]
Legend
A= Limit A
B= Limit B
C= Limit C
D= Damper 100% open (largest volume flow rate)
Limit D - Standard
LwA = sound power level tolerance ± 2dB[A]

Installation manual for automatic extract air valve
10
9. Maintenance
GEFAHR!
Stromschlag beim Berühren spannungsführender
Teile. Elektrische Ausrüstungen stehen unter
gefährlicher elektrischer Spannung.
Nichtbeachtung kann Tod, schwere Körperschäden
oder Sachschaden verursachen!
– An den elektrischen Komponenten dürfen nur
Elektrofachkräfte arbeiten.
– Vor Arbeiten an der Elektrik die Versorgungs-
spannung ausschalten.
Maintenance and cleaning
Please note:
- Clean surfaces with a damp cloth.
- Only use commercially available, non-corrosive
cleaning agents
- Do not use cleaning agents that contain chlorine.
- The use of cleaning tools for removing persistent
contamination, e.g. scrubbing sponges and scouring agents,
can damage the surface and is not permitted.
- Contaminated filter elements need to be replaced.
Cleaning by vacuuming or washing is not
permitted for hygiene reasons.
- All technical components can be replaced
if defective.
Design subject to change (06/2017)