Aico Ei128R, Ei128RBU, Ei128COV User Instruction
RELAY BASES & COVERS
FOR SMOKE, HEAT & CARBON MONOXIDE ALARMS
Common Instruction Manual
Contains vital information on the product’s operation and
installation. Read and retain carefully. If you are just installing
this product the manual MUST be given to the householder.
1. Description of Models & Usage
Ei128R - Relay Base with remote terminal. Relay Output
250VAC / 5 Amps. Normally used directly
underneath Easi-fit Smoke & Heat Alarms. When
used with accessory cover Ei128COV the
combination may be sited at the fuse box or
other suitable locations. The combination can
also be used with other Ei Smoke, Heat &
Carbon Monoxide Alarms - see section 3.
Ei128RBU - Same as the Ei128R above but with the addition
of a rechargeable cell backup.
Ei128COV - Plastic cover for use with Ei128R & Ei128RBU
Relay Bases when they are not sited underneath
the actual alarms they are serving.
2. Ei128R & Ei128RBU Instructions
2.1 Introduction
The Ei128R & Ei128RBU Relay Bases switch a relay upon
receipt of an alarm signal from a suitable Ei Smoke, Heat or
Carbon Monoxide Alarm. The electrically isolated contacts
can be used for many applications such as signalling, turning
on lights, etc. The Relay Bases are powered by 230VAC
mains - with the Ei128RBU model having recharbeagle backup cells.
As supplied the relay operates continuously (e.g. it switches
when one of the Smoke / Heat Alarms detects fire and
switches back when the smoke clears).When the slide switch
is moved to the pulse ‘P’ position (see figures 1 & 2) the relay
will switch when fire is detected but will automatically switch
back after 5 seconds. This is commonly used with warden call
systems where only momentary short circuit signalling is
required.
2.2 Installation under Easifit Smoke / Heat Alarms
WARNING: Mains powered Relay Bases should be installed
by a qualified electrician in accordance with the Regulations
for Electrical Installations published by the Institution of
Electrical Engineers (UK) (i.e. BS7671). Failure to install the
1
Ei128R
Ei128RBU
Ei128COV
Models:
A15420-R1-Ei128RBU-UC-ENG 9/1/08 10:56 AM Page 1
unit correctly may expose the user to shock or fire hazards.
This unit is not waterproof and must not be exposed to
dripping or splashing.
WARNING: First disconnect the mains from the circuit to be used.
1. Choose a mounting position following the siting instructions
in the Smoke/Heat Alarm leaflet. Where the incoming wiring
is on the surface of the ceiling, the appropriately sized
ducting/conduit must be chosen to mate with the unit. Use a
sharp knife to remove material from the selected knockout,
making sure that there is no gap when mated with ducting /
conduit. There are three knockouts – two on the sidewall and
one on the rear.
2. Screw the Relay Base to the ceiling after first removing the
required knockout and bringing the house wires through it
(see figure 1a for Ei128R & figure 1b for Ei128RBU). If the
central knockout is being used, seal around the wires with
silicone or similar to prevent air draughts affecting the smoke
entering the alarm.
Figure 1b - E128RBU Model
Figure 1a - E128R Model
2
A15420-R1-Ei128RBU-UC-ENG 9/1/08 10:56 AM Page 2
CONNECT RELAY
WIRES TO THE
TERMINAL BLOCK
NO - NORMALLY OPEN
NC - NORMALLY CLOSED
C - COMMON
(DOUBLE INSULATE ALL WIRES)
MOUNTING PLATE TERMINALS
KNOCKOUT
CONNECT TO EASI-FIT
SMOKE / HEAT ALARM
IC - INTERCONNECT
N - NEUTRAL
EARTH - (IF PRESENT)
RELAY CHANGES
FOR 5 SECONDS
L - LIVE
REMOVE IF NOT FITTING
AN EASI-FIT ALARM ON
TOP OF BASE
SLIDE SWITCH
OFF ON
NCC
NO
R
CONTINUOUS RELAY
ICICLLN
KNOCKOUT
SURFACE
CONDUIT
CABLE
ENTRY
N
FOR Ei161R/164R/166R
REMOTE CONTROL ONLY
REAR ENTRY
KNOCKOUT
SURFACE
CONDUIT
CABLE
ENTRY
CONNECT RELAY
WIRES TO THE
TERMINAL BLOCK
NO - NORMALLY OPEN
NC - NORMALLY CLOSED
C - COMMON
(DOUBLE INSULATE ALL WIRES)
FOR Ei161R/164R/166R
REMOTE CONTROL ONLY
P - PULSE
RELAY CHANGES
FOR 5 SECONDS
SCREW
MOUNTING
HOLES
NO
NC
C
R
P
C - CONTINUOUS RELAY
C
ON
OFF
N
IC
L
L
CONNECT MAINS
IC
TO TERMINAL BLOCK
L - LIVE
N
N - NEUTRAL
IC - INTERCONNECT
SURFACE
CONDUIT
CABLE
ENTRY
RECHARGEABLE
CELLS
ON/OFF
SLIDE SWITCH
CONNECT TO EASI-FIT SMOKE / HEAT ALARM
MOUNTING PLATE TERMINALS
N - NEUTRAL
IC - INTERCONNECT
L - LIVE
EARTH IF PRESENT
REMOVE IF NOT FITTING
AN EASI-FIT ALARM ON
TOP OF BASE
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