Ei Electronics Ei161RC Ionisation User manual

1.1 Installation Guide

B16008-R0-160RC SERIES-U&C 17/1/07 11:13 AM Page 1

2. ALARM REMOVAL

SLIDE ALARM OFF BASE

WITH THE SCREWDRIVER STILL INSERTED, PUSH THE LOWER

HALF OF THE ALARM AWAY FROM THE SCREWDRIVER, IN THE

DIRECTION OF THE ARROW ON THE COVER

HOLD THE LOWER HALF OF THE ALARM AND REMOVE FROM

THE BASE PLATE BY MOVING IT VERTICALLY DOWNWARDS,

WARDS THE FL

REMOVE ALARM

LOCATE REMOVAL SLOT

LOCATE THE ARROW ON THE FRONT FACE OF THE ALARM.

THE SLOT IS LOCATED DIRECTLY ABOVE THE ARROW.

INSERT SCREWDRIVER

INSERT A FLAT-BLADED SCREWDRIVER HORIZONTALLY

APPROX. 1cm INTO THE CENTRE OF THE REMOVAL SLOT

B16008-R0-160RC SERIES-U&C 17/1/07 11:13 AM Page 2

2. HOW MANY ALARMS TO INSTALL

- CATEGORIES & GRADES -

The advice here follows the guidance in British Standard

BS 5839-Part 6: 2004 in general (for further information see

the BS standard itself).

The main reason for fitting Smoke & Heat Alarms in dwellings

is to ensure that when there is a fire, sufficient early warning

is given so that everybody can escape safely.

This means that the fire alarms should ideally be located near

all potential sources of fires and that the alarm should be

heard throughout the house – particularly in the bedrooms.

It is also important that nuisance/false alarms are minimised

to ensure the units are not disabled or ignored.

The BS standard gives guidance on:

- how many alarms to install

- what type of alarm to use

- where to position alarms

The above points will depend on the type of dwelling to be

protected and the level of fire risk.

Fire Risk Assessment

The ‘Grade’ and ‘Category’ of system that should be installed

depends on the fire risk. The risk assessment is based on a

combination of probabilities:

- fire occurring

- injury or death to occupant

- system operating correctly with a fire

- early detection and warning to occupants in the event of a fire.

The greater the risks, the more comprehensive and reliable

systems are needed.

2.1 Categories of System

There are three Categories of LD systems for Life protection

in Dwellings that can be installed, depending on the fire risk

and regulations.

Please see following pages for detailed information.

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for existing dwellings

MINIMUM PROTECTION

LD3

Minimum Protection LD3:

Smoke Alarms in all

hallways, stairways and circulation areas that form

part of the escape routes from the dwelling.

Multi Storey Dwelling LD3

Living

Room

Bedroom Bathroom

Kitchen

Bedroom Shower

Garage

Smoke Alarms located:

on each storey

every 7.5 m of hallways and escape routes

within 3m of all bedroom doors

(apart from toilets & bathrooms )

Bedroom

Bedroom Bedroom

Kitchen / Dining Room

Living Room

Bathroom

Single Storey Dwelling LD3

do not fit alarm

Ionisation or Optical

Smoke Alarm Optical Smoke Alarm

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Additional Protection LD2: As LD3, but in addition

Smoke or Heat Alarms in all rooms or areas that

present a high fire risk to occupants.

Heat Alarms located in:

(Heat Alarms must be within 5.3m of potential fire

sources)

each Kitchen

Smoke or Heat Alarms located in:

each Living room (i.e. most frequently used

daytime room)

Smoke Alarms located:

on each storey

every 7.5 m of hallways and escape routes

within 3m of all bedroom doors

(apart from toilets & bathrooms )

for new or materially altered dwellings or existing dwellings

with poor structural fire precautions

ADDITIONAL PROTECTION

LD2

Multi Storey Dwelling LD2

Living

Room

Bedroom Bathroom

Kitchen

Bedroom Shower

Garage

Bedroom

Bedroom Bedroom

Kitchen / Dining Room

Living Room

Bathroom

Single Storey Dwelling LD2

Heat Alarm do not fit alarm

Ionisation or Optical

Smoke Alarm Optical Smoke Alarm

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for dwellings where occupants may be at high risk (e.g. elderly)

OPTIMUM PROTECTION

LD1

Optimum Protection LD1: As LD2, but in addition

Smoke or Heat Alarms should be located in all rooms

and other areas of the dwelling.

(apart from toilets or bathroom)

Multi Storey Dwelling LD1

Heat Alarms located in:

(Heat Alarms must be within 5.3m of potential fire

sources)

each Kitchen

garages

Living

Room

Bedroom Bathroom

Kitchen

Bedroom Shower

Garage

Smoke or Heat Alarms located in:

each Living room (i.e. most frequently used

daytime room)

Smoke Alarms located:

on each storey

every 7.5 m of hallways and escape routes

within 3m of all bedroom doors

in all other rooms & areas other than listed below

(apart from toilets & bathrooms )

Bedroom

Bedroom Bedroom

Kitchen / Dining Room

Living Room

Bathroom

Single Storey Dwelling LD1

Heat Alarm do not fit alarm

Ionisation or Optical

Smoke Alarm Optical Smoke Alarm

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2.2 Selecting Alarm Type

1Optical Smoke Alarms are recommended due to their excellent response

to smouldering fires. If there is likely to be problems with steam,

contamination or dust build-up, or if there is significant risk of a fast burning

clean fire an Ionisation Smoke Alarm should be fitted.

2Some Fire Authorities recommend that both Ionisation and Optical

Smoke Alarms should be fitted for the fastest response to all types of fires.

3Some Fire authorities (concerned with the slow response of Heat Alarms)

advise that Smoke Alarms should be fitted. This is acceptable according to

BS 5839-6 provided there are clearly not going to be problems with

nuisance alarms. Fit Heat Alarms only if nuisance alarms are very likely

and it is acceptable that a warning will only be given by the Heat Alarm

when there is a very significant flaming fire in the room. If the door(s) and

windows are not closed to contain the fire and heat, it is extremely unlikely

that the Heat Alarm would respond before a Smoke Alarm sited outside in

the corridor.

4In enclosed kitchens with doors closed.

5Greatly depends on ventilation and distance from source of fumes.

Locations

Hall, Corridors, Escape Routes

Alarm Type

Optical Ionisation Heat

Bedrooms

Shower / Bathroom

Kitchens

Living Rooms

Fire Response

Slow Smouldering Fires

(polyurethane foam, ignited bedding etc.)

Nuisance Alarm Immunity

Cooking Fumes

Steam, Condensation &

Dust Build-up

Fast Flaming Fires

(chip pans, flaming wood/plastic, oil,

solvents etc.)

- Best - Good - Acceptable - Not Suitable

Temperature >580C

(only in areas with cooking fumes, steam,

very dirty/dusty)

Optical/Ionisation/Heat Alarm Selection

Locations & Performance

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Improved Audibility

The effectiveness of Category LD2 and LD3 systems can be

significantly enhanced if an additional Smoke Alarm (interconnected)

is installed in the master bedroom. This will help ensure that a

responsible person will quickly be alerted to a fire and can arrange for

an orderly evacuation of children and other vulnerable occupants.

2.3 Grade D, E & F Systems

The mains powered Smoke and Heat Alarms with battery back-up

covered by these instructions are suitable for Grade D, E & F Systems.

A Grade D system is needed for:

- new or materially altered dwellings, up to three-storeys, with no floor

over 200m2

- existing dwellings with poor structural fire precautions, up to three

storeys, with no floor over 200m2

- Houses in Multiple Occupation (HMOs) of one or two-storeys, with

no floor over 200m2

- Individual dwellings units of two or more rooms in HMOs

Check that a Grade D system is adequate for the dwelling into which

the system is being installed.

3. POSITIONING ALARMS

The locations must comply with applicable building

regulations.

Hot smoke rises and spreads out, so a central ceiling position

is the preferred location. The air is “dead” and does not move in

corners, therefore Smoke & Heat Alarms must be mounted

away from corners. Place the unit:

- At least 0.3m away from walls. See Figure 1.

- At least 0.3m from any light fitting or decorative object which

might obstruct smoke / heat entering the Alarm.

(Smoke Alarms should be located directly on the ceiling or, if not

possible, up to 575mm below it. Heat Alarms should be located directly

on the ceiling or, if not possible, up to 125mm below it).

Sloping Ceiling

In areas with sloping or peaked ceilings install the

Smoke/Heat Alarm 90cm from the highest point measured

horizontally (see Figure 2), because “dead air” at the apex

may prevent smoke from reaching the unit.

0.9m

0.3m

Figure 1 Figure 2

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3.1 Locations To Avoid

DON’T place Smoke Alarms in any of the following areas:

• Bathrooms, kitchens, shower rooms, garages or other rooms where the

smoke alarm may be triggered by steam, condensation, normal smoke or

fumes. Keep at least 6 metres away from sources of normal smoke/fumes.

DON’T place Heat Alarms in any of the following areas:

• Bathrooms, shower rooms or other rooms where the unit may be

triggered by steam or condensation.

DON’T place Smoke or Heat Alarms in any of the

following areas:

• Places where the normal temperature can exceed 40°C or be below

4°C (e.g. attics, furnace rooms, directly above ovens or kettles etc.)

as the heat/steam could cause nuisance alarms.

• Near a decorative object, door, light fitting, window moulding etc.,

that may prevent smoke or heat from entering the Alarm.

• Surfaces that are normally warmer or colder than the rest of the room

(e.g. attic hatches). Temperature differences might stop smoke or heat

from reaching the unit.

• Next to or directly above heaters or air conditioning vents, windows,

wall vents etc. that can change the direction of airflow.

• In very high or awkward areas (e.g. over stairwells) where it may be

difficult to reach the alarm (for testing, hushing or battery

replacement).

• Locate away from very dusty or dirty areas as dust build-up in the

chamber can impair performance. It can also block the insect screen

mesh and prevent smoke from entering the smoke detector

chamber.

• Locate the unit at least 1m from dimmer controlled lights and wiring

as some dimmers can cause interference.

• Locate unit at least 1.5m and route wiring at least 1m away from

fluorescent light fittings as electrical “noise” and/or flickering may

affect the unit. Do not wire into the same circuit as fluorescent lights

or dimmers.

• Do not locate in insect infested areas. Small insects getting into the

smoke detector chamber can cause intermittent alarms. Insects and

contamination on the Heat Alarm sensor can increase its response

time.

4. INSTALLATION

The Alarm is designed to be permanently mounted , using it’s

own built-in terminal block to connect it to the mains. The

mounting plate can be screwed directly to the ceiling.

Alternatively it can be screwed to a standard junction box. It

requires a current of 40mA. The Alarm must not be exposed

to dripping or splashing. There are important markings on the

underside of the alarm.

IMPORTANT PRECAUTION: Do not install the Alarms in

new or renovated buildings until all work is completed

(including floor coverings) and the building has been

fully cleaned. The wiring can be installed when

B16008-R0-160RC SERIES-U&C 17/1/07 11:13 AM Page 9

appropriate. (Excessive dust and debris from building

work can contaminate the smoke chamber or heat sensor

and cause problems, it will also invalidate the guarantee).

If it must be installed, first cover it completely, particularly

around the edges, with a dust cover (eg. with the

elasticated cover supplied or a plastic bag), until all

cleaning is finished.

The Alarm must not be connected when the house wiring

insulation is being checked with high voltages.

i.e. Do not use a high voltage insulation tester on the alarm.

WARNING: Mains operated Alarms should be installed and

interconnected by a qualified electrician in accordance with

the Regulations for Electrical Installations published by the

Institution of Electrical Engineers (BS7671). Failure to install

this Alarm correctly may expose the user to shock or fire hazards.

WARNING: The Alarm must be continuously powered 24

hours a day so it is important that it is not on a circuit that can

be turned off by a switch.

Note: BS 5839-6 2004 gives the folowing recommendations regarding the

mains supply to be used in a Grade D system (The Ei141/146

/161RC/166RC Smoke Alarms and Ei144/164RC Heat Alarms can be used

in a Grade D system). The power supply for the Alarms should be derived

from the public electricity supply to the dwelling. The mains supply to the

Alarms should take the form of either:

(a) an independent circuit at the dwelling’s main distribution board, in which

case no other electrical equipment should be connected to this circuit

(other than a dedicated monitoring device installed to indicate failure of the

mains supply to the Alarms); or

(b) a separately electrically protected, regularly used local lighting circuit.

Alarms should be connected on a single final circuit, unless the means of

interconnection is by radio signals (e.g. RadioLINK).

(See BS 5839-6: 2004 for further information)

Note: The Ei Electronics RadioLINK Base Ei168RC (for use with

Ei161RC/164RC/166RC models only) can be used to eliminate

interconnect wiring, make system extensions and provide simple and cost

effective compliance with BS 5839-6: 2004.

4.1 Mounting & Wiring Alarms

1. Select a location complying with the advice in previous

sections (see pages 4-10).

2. Disconnect the AC mains supply from the circuit that is

going to be used.

3. Lift off the wiring cover as shown in Figure 3.

The house wiring must be connected to the terminal block on

the mounting plate as follows:

L: Live - connect to the house wires coloured brown or

marked L.

N: Neutral - connect to the house wires coloured blue or

marked N.

B16008-R0-160RC SERIES-U&C 17/1/07 11:13 AM Page 10

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