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DFS8MS – Installation instructions

Wireless smoke detector

English

Introduction

The DFS8MS is an optical wireless smoke

detector. It is equipped with a siren and LED

light for local notification of alarms, and

services acting as an early warning device.

When several DFS8MS are placed in the

same facility, they are automatically

connected.The number of interconnected

DFS8MS detectors must not exceed 12.

When one interconnected device detects

smoke, all detectors on the system are

triggered. It is not necessary for smoke to

reach each detector for them to be triggered.

A DFS8MS system is a genuine early detection and warning system

Location of the smoke detector

A single smoke detector will guarantee a certain amount of protection if correctly

installed but most homes will require two or more to ensure reliable and timely

warning. To obtain the recommended level of protection, install a smoke detector in

every room where there is a potential fire risk (except for the kitchen or bathroom).

If a single smoke detector is installed, it must be located between the sleeping area

and the sources most exposed to risk of fire (living room, hallway near to the kitchen,

for example) but not more than 7.5 metres from a room where there is risk of fire

occurring and blocking your evacuation. Check that the sound emitted is loud enough

to wake the occupants of the bedroom.

If your home has more than one floor, you should install at least one smoke detector

per floor.

If your home occupies just one floor, it is preferable to place the detector in a corridor

or hallway located between sleeping areas and living rooms. Place it as close as

possible to living rooms but check that it is loud enough to wake anyone in the

bedroom.

Positioning of smoke detectors

Smoke generally rises to the ceiling and then spreads horizontally. The best place to

install the detector is therefore in the centre of the room. Install smoke detectors over

30 cm away from the walls and corners. Also, install the device at least 30 cm away

from light fittings or decorations that could prevent the smoke from reaching the smoke

detector. If the ceiling is sloped or cone shaped, install the smoke detector less than

60 cm from the summit (measured vertically). If this height is less than 60 cm, the

ceiling shall be considered flat for the purposes of smoke alarms.

Places to avoid

• Bathrooms, kitchens, showers, garages or other rooms where there is a risk of a

smoke detector being triggered by steam, condensation, smoke emissions or

normal emissions. Make sure you install the device over 6m away from sources of

smoke emissions/ normal emissions.

• Keep the detector away from very dusty or dirty areas, because a deposit of dust in

the room may reduce performance. It may also obstruct the anti-insect screen and

prevent smoke from entering the smoke detector chamber.

• Do not install the device in areas infested with insects. If small insects enter the

smoke detector chamber, they may trigger intermittent alarms.

•

• Places where the normal temperature can exceed 40°C or fall below 0°C (that is to

say lofts, boiler rooms, above ovens or kettles, etc.) as this can cause the untimely

triggering of alarms.

• Near decorations, doors, light fightings, window frames, etc., which can prevent

smoke from reaching the detector.

• Surfaces that are generally colder or hotter than the rest of the room (e.g. attic

hatches). Temperature differences may prevent smoke from reaching the device.

• Near to or above heaters or air conditioning vents windows wall mounted

ventilation grills, etc. that can cause changes in the direction of air flows.

• In very high or hard to access areas (e.g. staircase roofs) where you may find it

difficult to reach the detector (to test it, turn it off or replace the battery).

• Place the device over 1m away from dimmer lights and their wiring, due to the risk

of interference.

• Place the device over 1.5m away from fluorescent light fittings because "parasites"

of electrical origin and their flickering may affect the functioning of the device.

Installation procedure

1. Choose a location in accordance with the advice given in the paragraph "Location

of the smoke alarm" and "Positioning of the smoke alarm"

2. Place the mounting plate on the ceiling at the precise location where you want to

install the detector. With a pencil, mark the location of the two screw holes.

3. Making sure you avoid any electrical wiring present in the ceiling, pierce a hole with

a drill bit in the centre of the locations marked. Insert the plastic dowels into the

holes made. Screw the mounting plate to the ceiling (screws provided). Make sure

you protect the detection chamber against dust during operation. You may also use

the double sided adhesive (specified by Honeywell) and fix the base to the surface.

Note: do not use the adhesive unless the surface is smooth and clean.

4. Carefully align the device to the base with the help of marks, and turn it as shown in

figure 3; then turn it again clockwise (see figure 1b).

(Note: to remove the alarm from the ceiling, turn it anti-clockwise; see figure 1a).

5. Press the test button to check the alarm is working, as shown in figure 4.

6. With a 10 year battery, the radio button is no longer necessary. The registration

period is automatically triggered upon activation of the DSF8M (see figure 2).

Securing the alarms

The head of the smoke detector may be secured to prevent any unauthorised removal.

Break the little spur located on the base of the detector, as indicted in figure 5. To

remove the detector head, it will now be necessary to use a small screwdriver to

release the ratchet (pushing it upwards), then unscrew the box (see figure 6).

It is possible, when required, to secure the detector head further by using a self-

tapping screw (from 2 to 3 mm in diameter by 6 to 8 mm long, not supplied) to fix the

head firmly to the mounting plate (see figure 7).

Fix the head of the smoke detector to the mounting plate. Align the screw (not

supplied) to the hollow U-shaped zone illustrated in figure 7 and screw it tight.

To remove the smoke detector head from the ceiling, start by removing the screw.

Then, using a small screwdriver, release the ratchet (pushing it upwards), then release

the head of the detector by turning it anti-clockwise.

DFS8MS

Figure 1a

Figure 2

Test button

Figure 1b

The antenna

Align the marks on the base of

the hood and turn to run the

device

Mounting plate

Smoke detector

hood

Figure 3

Figure 4

Figure 6

Figure 7

Figure 5

Breakage of the locking stud

Push the ratchet upwards and turn the

alarm anti-clockwise to remove it

Honeywell DFS8MS Anleitung

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