Duomo BX444 Skrócona instrukcja obsługi - Strona 3

Przeglądaj online lub pobierz pdf Skrócona instrukcja obsługi dla Detektory gazu Duomo BX444. Duomo BX444 8 stron.

Drukuj stronę

Installation

Mounting the detector

Fig.1

The BX444 can be wall mounted or panel

mounted. See fig.(2) for panel cutout dimen-

sions . When panel mounted the support

bracket supplied loose should be fitted as shown

in fig.(3)

Cable gland entries are provided in the form of 2

pre-moulded 20mm 'knockouts' in the back of

the BX444 box. Alternatively it is possible to

carefully drill into the sides of the box. Note: See

fig.(4) for suitable drill positions. Always ensure

that the printed circuit board will clear the cable

gland when closed. It is recommended that the

Fig.2

PCB facia assembly is removed prior to drilling

for gland entry.

Positioning Sensors

The SG590 (Methane) and CO100 (Carbon

Monoxide) Sensors should be mounted in

accordance with the following considerations.

Do not position next to burners, heaters or

ovens where temperatures above the room

ambient may be experienced. It is, if possible,

better to mount the sensors on the opposite

wall. This is, of course, dependant on the size of

Fig.3

the protected area.

Natural Gas is lighter than air and therefore will

obviously rise, therefore the SG590 (methane)

sensor should be mounted 300mm from the

ceiling of the protected area.

For LPG (Propane and butane) the SG590 LPG

must be connected. LPG is heavier than air so

the sensor must be located 300mm from floor

level.

Carbon Monoxide has specific gravity of 0.97

and is therefore slightly lighter than air. However

for positioning purposes at the concentrations of

CO relating to the detector alarm thresholds the

resultant combination of CO and air will neither

rise or fall. The best position to mount the

C0100 is 1.6m above ground level.

If you require assistance regarding locating sen-

sors please call our Droitwich Factory on (01905)

797989 alternatively fax a drawing of your appli-

cation to (01905) 774296 and we will advise ac-

cordingly.