Custom Electronics AOV Multi Zone User Manual

Custom Electronics Ltd
AOV Multi-zone Control Unit
Installation Document
March 2008
Version 1a
Table of Contents
1) General overview
2) System Schematics i. Standard auto system ii. Auto system with break glass units iii. Auto system with detectors iv. Auto system combination v. Manual Control System Combination
3) Internal layout & Fixing Details
4) PCB connections
5) Technical specification
6) Installation instructions
7) Connection Guide
8) Wiring Installations
1) General Overview
This control unit is for use with most Automatic Opening Vents and can be used with other equipment that requires forward/reverse voltage for closure.
The unit will operate in conjunction with most current Fire Alarm Systems operating on 24v dc.
The unit can provide battery backup so that a constant supply is applied along with visible and audible fault and conditional warnings at the control unit.
Modular design allows for ease of parts replacement if needed. Basic “Fireman” control can be achieved by use of an additional special yellow call point fitted
as required by the system design.
Electrical Supply
Supply to the unit should be 240V ac 50Hz (+/-5%) and earth. The supply should be fed to the unit via a suitably rated fused outlet, fitted adjacent to the unit. The mains supply in the enclosure must be wired into the internal fused terminal block provided. The unit must be earthed. It is recommended that the mains supply to the unit is fed from an independent fused supply at the main electrical distribution panel.
Operation of main unit
With mains 240vAC connected, the unit will charge batteries where fitted via the Power Supply PCB and will give an output of 26v DC +/-10% to the actuators when activated.
The standard system is designed to operate in automatic mode and would normally be controlled by a Fire Alarm Control Panel or other control system to operate. The design of the Fire Alarm System will generally control each input to the unit and determine when each actuator output is operated or reset. Full reset is effected at the Fire Alarm Control Panel at which time the unit will reverse the polarity of the outputs and care must be taken that any equipment connected will not be damaged by this operation.
Note: When reset is effected there will be timed reverse polarity output irrespective of whether a trigger input from a Fire Panel or other device is present or not.
(The purpose of the timed reset is to prevent instances or repeat opening and closing when trying to reset the Fire Control Panel. This happens when smoke is still present in an activated smoke detector)
This unit also has a fault-monitoring relay on the battery charger PCB. The relay is energised when the unit is operating under normal (fault free) conditions and gives a set of voltage free contacts at the ‘Fault Relay Output’.
The relay will operate in tandem with any fault on the power supply unit (see section 6. for PSU fault information). These contacts can be used to signal faults to a remote monitoring system, control a remote indicator or audible unit if required or be interconnected to a Fire Alarm Control Panel to report a fault.
2) i Standard Auto System
2) ii Auto system with break glass units
2) iii Auto system with detectors
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