Skov 278A Technical Manual

Skov 278A Technical Manual

On/off emergency opening

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DOL 278A ON/OFF
Emergency Opening
Technical Manual
603919 • 2023-10-16

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Summary of Contents for Skov 278A

  • Page 1 DOL 278A ON/OFF Emergency Opening Technical Manual 603919 • 2023-10-16...
  • Page 2 The date of change appears from the front and back pages. Note • All rights belong to SKOV A/S. No part of this manual may be reproduced in any manner whatsoever without the expressed written permission of SKOV A/S in each case.
  • Page 3: Table Of Contents

    DOL 278A ON/OFF 1 Product description ............................ 4 2 Procedure................................  5 3 Product survey ...............................  6 4 Mounting guide...............................  7 5 Installation guide............................ 8 Installation of battery.........................  8 Installation of the TEST supply separator ................ 8 Cable dimensions for 24V DC depending on length ............ 10 Setting the supply voltage on the power supply ..............
  • Page 4: Product Description

    DOL 278A ON/OFF 1 Product description DOL 278 ON/OFF is a simple emergency opening unit, which in combination with the house controller can emergency open in case of simple types of error. In case of emergency, the system opens completely. Emer- gency opening is not available for all types of control failures.
  • Page 5: Procedure

    DOL 278A ON/OFF 2 Procedure This manual describes the mounting, installation and commissioning of a DOL 278 ON/OFF controlled emer- gency opening system and is aimed primarily at the technicians and electricians who will be mounting, installing and testing the emergency opening system.
  • Page 6: Product Survey

    DOL 278A ON/OFF 3 Product survey 134690 DOL 278AM EmergencyOpen. ON/OFF Medium 4.2A ON/OFF controlled emergency opening. Max. power consumption: 4.2 A Battery: 4 Ah Medium is including battery and a power supply. Medium supplies max. 4.2 Supports e.g. 4 DA 175-600 and 20 DA 74 winch motors.
  • Page 7: Mounting Guide

    DOL 278A ON/OFF 4 Mounting guide 1. Drill holes in the bottom of the cabinet (A). 2. Place the emergency opening unit: - close enough to the house controller for the rubber sleeve supplied (B) to fit neatly between them (the emergency opening unit can be placed on either side of the house controller).
  • Page 8: Installation Guide

    DOL 278A ON/OFF 5 Installation guide Installation, servicing and troubleshooting of all electrical equipment must be carried out by quali- fied personnel in compliance with the applicable national and international standard EN 60204-1 and any other EU standards that are applicable in Europe.
  • Page 9 DOL 278A ON/OFF The emergency opening unit must be supplied from the same phase as the house controller. Technical Manual...
  • Page 10: Cable Dimensions For 24V Dc Depending On Length

    DOL 278A ON/OFF 5.3 Cable dimensions for 24V DC depending on length 2 A motor 4 A motor 8 A motor 10 A motor AWG Cross Length Length Length Length section 0 - 41 m 0 - 20 m 1.5 mm 42 –...
  • Page 11: Setup Options At High Power Consumption

    DOL 278A ON/OFF 5.5 Setup options at high power consumption When the distance between the climate controller and wall fan or actuator is long, you can avoid long, thick low- power cables by placing DOL 278 ON/OFF close to the power-consuming units.
  • Page 12: Wiring Diagrams

    DOL 278A ON/OFF 5.6 Wiring diagrams 5.6.1 Emergency opening - Medium Emergency opening - Medium Winch motor - chimney Winch motor - wall Controller Technical Manual...
  • Page 13: Emergency Opening - Large

    DOL 278A ON/OFF 5.6.2 Emergency opening - Large Emergency opening - Large Winch motor - chimney Winch motor - wall House controller Technical Manual...
  • Page 14: Emergency Opening - Xtra Large

    DOL 278A ON/OFF 5.6.3 Emergency opening - Xtra Large Emergency opening - Xtra Large Winch motor - chimney Winch motor - wall Controller Technical Manual...
  • Page 15: Emergency Opening At High Power Consumption

    DOL 278A ON/OFF 5.6.4 Emergency opening at high power consumption DOL 278 ON/OFF is used as extra power supply. No. 2 No. 1 Climate controller DOL 278 ON/OFF no. 1 Emergency opening Jumper in climate controller DOL 278 ON/OFF no. 3 Supply for actuators DOL 278 ON/OFF no.
  • Page 16: Number Of Fans And Actuators On Emergency Opening

    DOL 278A ON/OFF 5.7 Number of fans and actuators on emergency opening The table states the maximum number of fans and actuators that can be connected to DOL 278 ON/OFF, when DOL 278 ON/OFF is used as additional 24 V DC power supply.
  • Page 17: Testing

    DOL 278A ON/OFF 6 Testing 6.1 Testing the installation Test when it is not so hot that the ventilation system has already opened completely. The inlets must be closed. Charge the battery for at least 20 minutes before the first test.
  • Page 18: Troubleshooting Guide

    DOL 278A ON/OFF 7 Troubleshooting guide The winch motor will not run: Is supply voltage supplied to terminals F1 and F2? If not, check: • external TEST supply separator • supply voltage selector on one, two or three modules • installation fuses •...
  • Page 19: Technical Data

    DOL 278A ON/OFF 8 Technical data DOL 278 ON/OFF DOL 278 ON/OFF DOL 278 ON/OFF Medium Large Xtra Large Electrical [V AC] 100 – 115 / 200 – 230 ±10 % Rated voltage [V AC] 90 – 126,5 / 180 - 253...
  • Page 20: Dimensioned Sketch

    DOL 278A ON/OFF 8.1 Dimensioned sketch Medium, Large Xtra Large Technical Manual...
  • Page 24 SKOV A/S • Hedelund 4 • Glyngøre • DK-7870 Roslev Tel. +45 72 17 55 55 • www.skov.com • E-mail: skov@skov.dk...

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