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Manual ELW 170 / ELW 180
May 2020
in air conditioning and ventilating systems
Notes relating to instructions
Please read these operating instructions carefully and note the relevant country-specific standards, safety
requirements and accident prevention specifications. The mounting instructions form part of the device and
must be retained for its entire life.
Dissemination and reproduction of this document, exploitation and communication of its content are
prohibited unless expressly permitted. We will claim compensation for damages in the event of infringements.
All rights reserved for patents, utility models or registered design.
The following warning notices are used in these instructions:
Immediate danger from electrical voltage and current
Failure to heed the information indicated by this symbol may lead to dangerous conditions,
possibly resulting in death or serious bodily injuries.
Possible danger
Failure to heed the information indicated by this symbol may lead to dangerous conditions,
possibly resulting in minor or light bodily injuries and/or substantial property damage.
1. Safety information
Mounting, electric installation, start-up and maintenance of the airflow monitor may only be
undertaken by a qualified electrician. The directions provided in these instructions must be
understood, noted and followed. The electrician is responsible for correctly connecting the
device in accordance with the electric wiring diagrams. The device requires no maintenance.
ENGELAIR
AIR FLOW MONITORING
Monitors types ELW 170 and ELW 180
for electric air heaters
®
page 1
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Summary of Contents for Kuno Engels ENGELAIR ELW 170
- Page 1 Manual ELW 170 / ELW 180 May 2020 ® ENGELAIR AIR FLOW MONITORING Monitors types ELW 170 and ELW 180 for electric air heaters in air conditioning and ventilating systems Notes relating to instructions Please read these operating instructions carefully and note the relevant country-specific standards, safety requirements and accident prevention specifications.
- Page 2 Manual ELW 170 / ELW 180 May 2020 The housing may be opened to be connected to the electricity supply and to set parameters. There are hazardous circuits inside the housing. The airflow monitor may only be operated by staff who have been authorised and trained to do so by the system operator. The applicable standards and directives should be observed.
- Page 3 Manual ELW 170 / ELW 180 May 2020 6. Mounting and installation Before the device is mounted, ensure that it is not displaying signs of any physical damage or damage caused by moisture, which may have come about due to improper transport or storage.
- Page 4 Manual ELW 170 / ELW 180 May 2020 6.2.2 Sensor connection The sensor cable carries a DC voltage of 24 V and two serial signals should therefore be routed using the shortest path possible. In the version for duct mounting, the sensor is permanentlyintegrated in the housing ex factory and connected to the control unit.
- Page 5 Manual ELW 170 / ELW 180 May 2020 7.1 Operating mode auto restart The relays have the following function: REL1 (contacts 5, 6, 7): Alarm function without interlock REL2 (contacts 8, 9, 10): Flow monitoring Once the operating voltage has been applied and the desired flow speed has built up after the start delay (constants see technical data ), relay 2 energises (contacts 8/9 close) and the downstream unit is released.
- Page 6 Manual ELW 170 / ELW 180 May 2020 8. Start-up The following points have to be noted when starting up: 8.1. Checks before switching on the auxiliary energy Before starting up the device, check whether the wiring has been produced correctly as shown in the wiring diagram, the auxiliary energy corresponds to the details on the type plate, the ambient conditions match the details in the technical data.
- Page 7 / customer under the specific conditions of use; we do not accept any liability for this. We reserve the right to amendments. KUNO ENGELS GmbH + Co. • Hauptstrasse 42 • D-42799 Leichlingen Tel.:+49(0)2174/7900-0 • Fax:+49(0)2174/7900-10 • info@kunoengels.de • www.kunoengels.de...
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