Aico EI127 Installation Instructions

Pattress Models Ei127 & Ei127R

For use only with Ei140, 141, 144, 145, 146, 161, 161R,

164, 164R, 166, 166R Easi-Fit Smoke/Heat Alarms

The Smoke/Heat Alarm is mounted on the Ei127 & Ei127R.

The Ei127 pattress facilitates installation of bulky wiring and con­duits.

The Ei127R has an additional socket for connecting to the R
spade terminal on the Ei161R, Ei164R or Ei166R. This can be
used for remote test & hush or manual call points.

WARNING: This pattress must only be used with one of the
above smoke alarms as per these instructions - otherwise the unit
will not comply with the mandatory safety regulations.

Installation

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 four
knockouts – three on the sidewall and one on the rear.

SURFACE
CONDUIT
CABLE

Ei161R/164R/166R
REMOTE CONTROL ONLY

ENTRY

KNOCKOUT

L

IC

N

REAR

R

Figure 1

CONNECT TO SMOKE / HEAT ALARM

MOUNTING PLATE TERMINALS

EARTH - (IF PRESENT)
N - NEUTRAL
IC - INTERCONNECT
L - LIVE

KNOCKOUT

FOR MOUNTING PLATE

2. Screw the pattress to the ceiling after first removing the
required knockout and bringing the house wires through it (see
figure 1). Use the longer screws and plasterboard anchors from
the Smoke Alarm pack for this task. If the central knockout is

1

being used, seal around the wires (and the openings at the rear
of the pattress) with silicone or similar to prevent air draughts
affecting the smoke entering the alarm.

3. Connect the house wires (L - Live, N - Neutral and IC ­Interconnect, if it is being used) to the terminal block on the pat­tress. If an Ei161R, Ei164R or Ei166R (with remote TEST/HUSH)
is being installed, attach the “R” wire from the Ei152 (see the
Ei152 instructions) to the terminal marked “R” in the pattress (see
figure 1). If the Ei161R, Ei164R or Ei166R is being used with a
manual call point then connect the R terminal to the call point (see
figures 1& 2). Otherwise do not connect anything to the ”R” termi­nal.

4. Connect the three wires (L, N and IC) from the pattress con­nector block to the connectors on the Smoke/Heat Alarms mount­ing plate. Connect the earth wire (if present) from the house wir­ing directly to the terminal on the mounting plate. Replace the
cover over the terminal wires.

Note: that the house wiring can be connected directly to the
mounting plate if the pattress terminals are not being used for
looping.

Figure 2

5. Screw the mounting plate to the pattress pillars using the two
screws supplied with this kit.

6. Slide the alarm on to the mounting plate.

7. Connect the mains power – the green LED light on the alarm
should be on. When the test button is pressed the horn should
sound.

If an Ei128R or Ei128RBU pattress with relay is being used,
replace the Ei127R with the Ei128R or Ei128RBU and follow the
instructions supplied with it.

Aico Ltd

Mile End Business Park,

Maesbury Road, Oswestry, Shropshire SY10 8NN, U.K.

Telephone: [phone] www.aico.co.uk

Ei Electronics

Shannon Industrial Estate,

Shannon, Co. Clare, Ireland

www.eielectronics.com

© Ei Electronics 2005P/N A13894 Rev3

2