Ampac Extinguishant Hold Off/Abort Button Installation guide

Brand: Ampac

Model: Extinguishant Hold Off/Abort Button

Type: Installation guide

Page 1 of 1

MAN1811 Website: www.ampac.net Revision: 29 July 2009

“ Our aim is to provide ‘ Consistently Excellent Service ’ in the eyes of our customers ”

GasRelease

System Hold Off and Abort

Button Installation Guide Item Number: 2980-0006

Introduction

The System Hold Off / Abort buttons connect to the 3 Zone

GasRelease Panel and is used to either delay, or cancel the

extinguishant release sequence.

Installation

Location and Fixing

Depending on the function of the button, attach either the yellow

Extinguishant Hold Off, or Extinguishant Abort label to the front

of the button enclosure (see images right). The Hold Off and

Abort buttons are single gang, surface-mounted units and must

be mounted indoors on a dry, flat surface. Fix the button’s back

box securely using the four mounting holes provided. During the

fixing process, care must be taken not to damage internal

wiring, or components.

Wiring

All wiring should be installed in accordance with the current

edition of the IEE Wiring Regulations (BS7671), or relevant

national standards. Cables should be fed into the buttons via

the knockouts provided on the back box.

The first button connects to the relevant connector block at the GasRelease panel (either HOLD or ABORT

terminals), via a 2-wire connection (see Figure 1 below). The remaining buttons are then connected in series.

A 470R resistor (supplied) must be fitted in every button and a 6k8 end-of-line resistor (supplied with the

GasRelease Panel accessories) must be fitted in the last button in the chain to allow the wiring to be line

monitored for open and short-circuit faults.

470R (Supplied with

Hold off & Abort buttons)

Gas Release Panel Hold or Abort Button 1

(first button) Hold or Abort Button n

(last button)

6K8 EOL (Supplied with

Gas Release Panel)

Hold or Abort

Terminals

Technical Specification

System Hold Off / Abort Button

Monitored Input Thresholds: 8K to 2K ohms (normal); 1.8K to 200 ohms (active);

150 to 0 ohms (short-circuit)

Ingress Protection (IP) Rating: IP66

Dimensions/Weight: 93mm(w) x 93mm(h) x 78mm(d) approx. / 250g (plastic)

Accessory Pack

1 x Button Enclosure; 1 x Installation Instructions; 1 x yellow 2-part label; 1 x 470R 2W MF resistor.

Figure 1 – Typical Wiring

Ampac Extinguishant Hold Off/Abort Button Installation guide

Ampac Extinguishant Hold Off/Abort Button Installation guide

Ampac Extinguishant Hold Off/Abort Button Installation guide

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