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Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!
Lire le mode d‘emploi avant de commencer toute opération !
A conserver pour une utilisation ultérieure !
¡Leer el manual de instrucciones antes de comenzar cualquier trabajo!
¡Guardar el manual para una eventual consulta!
Prima di iniziare ad utilizzare lo strumento, leggere il manuale d‘uso!
Conservare per future consultazioni!
2
WIKA operating instructions air2guide model A2G-65
40338355.02 05/2012 GB/D/F/E/I
Contents
Contents
1.General information4
2.Safety5
3.Specications6
Design and function
4.
5.Transport, packaging and storage9
6.Commissioning, operation9
7.Options and accessories11
8.Maintenance and cleaning11
9.Disposal11
8
GB
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WIKA operating instructions air2guide model A2G-65
3
1. General information
1. General information
■
The frost protection thermostat described in the operating instructions has been designed and manufactured using state-of-the-art
technology. All components are subject to stringent quality and
GB
environmental criteria during production. Our management systems
are certied to ISO 9001 and ISO 14001.
■
These operating instructions contain important information on
handling the instrument. Working safely requires that all safety
instructions and work instructions are observed.
■
Observe the relevant local accident prevention regulations and
general safety regulations for the instrument’s range of use.
■
The operating instructions are part of the product and must be kept
in the immediate vicinity of the instrument and readily accessible to
skilled personnel at any time.
■
Skilled personnel must have carefully read and understood the
operating instructions, prior to beginning any work.
■
The manufacturer’s liability is void in the case of any damage caused
by using the product contrary to its intended use, non-compliance
with these operating instructions, assignment of insuciently
qualied skilled personnel or unauthorised modications to the
instrument.
■
The general terms and conditions contained in the sales
documentation shall apply.
■
Subject to technical modications.
■
Further information:
- Internet address:www.wika.de / www.wika.com
www.air2guide.com
- Relevant data sheet:TE 62.92
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WIKA operating instructions air2guide model A2G-65
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1. General information / 2. Safety
Explanation of symbols
WARNING!
... indicates a potentially dangerous situation which can
result in serious injury or death if not avoided.
Information
… points out useful tips, recommendations and information
for ecient and trouble-free operation.
2. Safety
WARNING!
Before installation, commissioning and operation, ensure
that the appropriate frost protection thermostat has been
selected in terms of measuring range, design and specic
measuring conditions.
Non-observance can result in serious injury and/or damage
to the equipment.
Further important safety instructions can be found in the
individual chapters of these operating instructions.
2.1 Intended use
This frost protection thermostat is used for air-side temperature control
and prevention of frost damage to water heating coils in ventilation and
air-conditioning systems
GB
The instrument has been designed and built solely for the intended use
described here and may only be used accordingly.
The manufacturer shall not be liable for claims of any type based on
operation contrary to the intended use.
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WIKA operating instructions air2guide model A2G-65
5
2. Safety / 3. Specications
2.2 Personnel qualication
WARNING!
Risk of injury if qualication is insucient!
GB
Improper handling can result in considerable injury and
damage to equipment.
■
The activities described in these operating instructions
may only be carried out by skilled personnel who have
the qualications described below.
Skilled personnel
Skilled personnel are understood to be personnel who, based on their
technical training, knowledge of measurement and control technology
and on their experience and knowledge of country-specic regulations,
current standards and directives, are capable of carrying out the work
described and independently recognising potential hazards.
Explanation of symbols
CE, Communauté Européenne
Instruments bearing this mark comply with the relevant
European directives.
3. Specications
Capillary tube
Copper alloy
Length 3 m, optional 1.8 or 6 m
Capillary tube lling
R 507
Resetting
automatic, manual optional
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WIKA operating instructions air2guide model A2G-65
40338355.02 05/2012 GB/D/F/E/I
3. Specications
Electrical connection
Screw terminal max. 2.5 mm
2
Cable gland M16 x 1.5
Permissible temperature
Ambient: -30 … +70 °C, max. 85 % rH, non-condensing
Medium: w + minimum 2 K … 70 °C
(w = selected set point)
Housing material
Lower body: PA GK30
Cover: ABS transparent
Dimensions in mm
GB
Ingress protection
IP 65 per EN 60529 / lEC 529
For further specications see WIKA data sheet TE 62.92 and the order
documentation.
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WIKA operating instructions air2guide model A2G-65
7
4. Design and function
4. Design and function
Description
Design
CE conformity: 2004/108/EG Electromagnetic compatibility (EMC)
GB
Product safety: 2001/95/EC Product safety
EMC: EN 60730-1: 2002
Product safety: EN 60730-1: 2002
Adjustable range for set point
-10 … +15 °C (Factory setting: 5 °C)
Switching dierential
≤ 2 ±1 °C
Repeatability
±0.5 °C
Sensor active length
approx. 60 cm
Switching output
Changeover contact, max. AC 250 V, max. 10 A
Contact material: Ag / Ni (90 % / 10 %), gold-plated (3 µm)
Scope of delivery
Cross-check the scope of delivery with the delivery note.
8
WIKA operating instructions air2guide model A2G-65
Check the frost protection thermostat for any damage that may have
been caused during transportation. Obvious damage must be reported
immediately.
5.2 Packaging
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g. change in installation site, sending for repair).
5.3 Storage
Permissible conditions at the place of storage:
Storage temperature: -30 ... +70 °C
Protect frost protection thermostat from moisture and dust.
6. Commissioning, operation
Installation and mechanical connection
The ambient temperature at the frost protection thermostat housing
(with the test loop) must be at least 2 °C above the selected set point.
If this cannot be guaranteed (e.g. outdoors or in exposed areas), the
housing and test loop must be installed inside the air handling unit.
The capillary tube must be mounted on the downstream side of the
heating coil (and on the upstream side in the case of cooling coils).
It should be looped diagonally across the heat exchanger pipes at a
distance of approx. 5 cm and should cover the entire area evenly. For
test purposes, it is recommended to have a loop of approx. 60 cm
directly beneath the housing outside the entry to the duct. To prevent
damage to the capillary tube, a minimum bending radius of 20 mm
must be ensured. Mounting can be made easier by using capillary tube
clamps (optional accessories).
GB
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WIKA operating instructions air2guide model A2G-65
9
6. Commissioning, operation
Connection diagram
GB
1 - 2 Normal operation
1 - 4 Risk of frost
The switch in the frost protection thermostat trips when the temperature over a capillary length of at least 60 cm drops below the selected
set point (contact 1-4 makes). Simultaneously, contact 1-2 breaks
and can be used as a signal contact. An automatic reset (contact 1-2
makes) occurs when the temperature once again exceeds the selected
set point. The air2guide AFT is “intrinsically safe”, i.e. in the event of
any damage to the capillary tube diaphragm system, it automatically
switches to the heating function. Contact 1-4 makes and can thus be
used as an operating contact. The air temperature is measured over the
full length of the sensor (capillary tube).
Commissioning
It is recommended to mount the frost protection thermostat on a special
plate (slide-in module), directly downstream of the heating coil. The
connecting cable must therefore be long enough to enable the plate to
be inserted and removed smoothly. For heating coils with a very large
cross section, several frost protection thermostats can be tted and
connected in series. In such cases, the temperature set point is set
individually for each frost protection thermostat.
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WIKA operating instructions air2guide model A2G-65
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7. Options and accessories ... 9. Disposal
7. Options and accessories
Standard accessories
■
Mounting clamps, 6 pieces for 6 m long capillary tube
■
2 x grommets DA 20/80/10
Options
■
Manual resetting
■
Capillary tube length 1.8 or 6 m
8. Maintenance and cleaning
The frost protection thermostat is maintenance-free and oers long
service life provided it is handled and operated properly.
Clean the instruments with a moist cloth (soap water).
Repairs must only be carried out by the manufacturer or appropriately
qualied skilled personnel.
9. Disposal
Incorrect disposal can put the environment at risk.
Dispose of instrument components and packaging materials in an
environmentally compatible way and in accordance with the country-
specic waste disposal regulations.
GB
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WIKA operating instructions air2guide model A2G-65
11
GB
12
WIKA operating instructions air2guide model A2G-65
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Inhalt
Inhalt
1.Allgemeines14
2.Sicherheit15
3.Technische Daten16
Aufbau und Funktion
4.
5.Transport, Verpackung und Lagerung19
6.Inbetriebnahme, Betrieb19
7.Optionen und Zubehör21
8.Wartung und Reinigung21
9.Entsorgung21
18
D
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WIKA Betriebsanleitung air2guide Typ A2G-65
13
1. Allgemeines
1. Allgemeines
■
Der in der Betriebsanleitung beschriebene Frostschutzthermostat
wird nach den neuesten Erkenntnissen konstruiert und gefertigt.
Alle Komponenten unterliegen während der Fertigung strengen
Qualitäts- und Umweltkriterien. Unsere Managementsysteme sind
nach ISO 9001 und ISO 14001 zertiziert.
D
■
Diese Betriebsanleitung gibt wichtige Hinweise zum Umgang mit
dem Gerät. Voraussetzung für sicheres Arbeiten ist die Einhaltung
aller angegebenen Sicherheitshinweise und Handlungsanweisungen.
■
Die für den Einsatzbereich des Gerätes geltenden örtlichen Unfallverhütungsvorschriften und allgemeinen Sicherheitsbestimmungen
einhalten.
■
Die Betriebsanleitung ist Produktbestandteil und muss in unmittelbarer Nähe des Gerätes für das Fachpersonal jederzeit zugänglich
aufbewahrt werden.
■
Das Fachpersonal muss die Betriebsanleitung vor Beginn aller
Arbeiten sorgfältig durchgelesen und verstanden haben.
■
Die Haftung des Herstellers erlischt bei Schäden durch bestimmungswidrige Verwendung, Nichtbeachten dieser Betriebsanleitung,
Einsatz ungenügend qualizierten Fachpersonals sowie eigenmächtiger Veränderung am Gerät.
■
Es gelten die allgemeinen Geschäftsbedingungen in den Verkaufsunterlagen.
… weist auf eine möglicherweise gefährliche Situation hin,
die zum Tod oder zu schweren Verletzungen führen kann,
wenn sie nicht gemieden wird.
Information
… hebt nützliche Tipps und Empfehlungen sowie Infor-
mationen für einen ezienten und störungsfreien Betrieb
hervor.
2. Sicherheit
WARNUNG!
Vor Montage, Inbetriebnahme und Betrieb sicherstellen,
dass das richtige Frostschutzthermostat hinsichtlich
Messbereich, Ausführung und spezischen Messbedingungen ausgewählt wurde.
Bei Nichtbeachten können schwere Körperverletzungen
und/oder Sachschäden auftreten.
Weitere wichtige Sicherheitshinweise benden sich in den
einzelnen Kapiteln dieser Betriebsanleitung.
2.1 Bestimmungsgemäße Verwendung
Dieser Frostschutzthermostat dient zur luftseitigen Temperaturüberwachung und Verhinderung von Frostschäden von Wasser-Lufterwärmern
in Lüftungs- und Klimaanlagen
D
Das Gerät ist ausschließlich für den hier beschriebenen bestimmungsgemäßen Verwendungszweck konzipiert und konstruiert und darf nur
dementsprechend verwendet werden.
Ansprüche jeglicher Art aufgrund von nicht bestimmungsgemäßer
Verwendung sind ausgeschlossen.
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WIKA Betriebsanleitung air2guide Typ A2G-65
15
2. Sicherheit / 3. Technische Daten
2.2 Personalqualikation
WARNUNG!
Verletzungsgefahr bei unzureichender Qualikation!
Unsachgemäßer Umgang kann zu erheblichen Personenund Sachschäden führen.
■
D
Die in dieser Betriebsanleitung beschriebenen Tätigkeiten nur durch Fachpersonal nachfolgend beschrie-
bener Qualikation durchführen lassen.
Fachpersonal
Das Fachpersonal ist aufgrund seiner fachlichen Ausbildung, seiner
Kenntnisse der Mess- und Regelungstechnik und seiner Erfahrungen
sowie Kenntnis der landesspezischen Vorschriften, geltenden Normen
und Richtlinien in der Lage, die beschriebenen Arbeiten auszuführen
und mögliche Gefahren selbstständig zu erkennen.
Symbolerklärung
CE, Communauté Européenne
Geräte mit dieser Kennzeichnung stimmen überein mit den
zutreenden europäischen Richtlinien.
3. Technische Daten
Kapillarrohr
Kupferlegierung
Länge 3 m, optional 1,8 oder 6 m
Kapillarrohrfüllung
R 507
Rückstellung
automatisch, optional manuell
16
WIKA Betriebsanleitung air2guide Typ A2G-65
40338355.02 05/2012 GB/D/F/E/I
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