Specifications

There are a number of options available for using a relay with Ei Smoke and Heat Alarms. All the
relays have volt-free output contacts rated at up to 240V and have both Normally Open and
Normally Closed connections. There are relay options available for use with mains operated devices
such as bells, sounders and door closers. In addition, there are relays available with a battery back-
up for use with devices that will operate even in the event of a mains failure, such as Warden Call
Systems. The relays can be mounted under an alarm, or can be remotely sited using the optional
cover for electrical safety.
Technically they can be used but if the system has to comply to BS 5839: Pt.1 it may not meet all the
requirements. For example, it is not possible to silence the sounder in the smoke alarm from the
control panel. Many regulatory bodies now recognise that a dual system (smoke/heat alarms in the
individual occupancies and a Pt.1 system in the communal areas) in HMOs can be an extremely
effective means of reducing the incidence of false alarms. In this instance, subject to approval, it
could be an advantage to have this link.
MAINTENANCE
We recommend weekly testing by pressing the test button for between 5 - 10 seconds, or until all
interconnected alarms sound.
BS 5839: Pt.6: 2004 recommends that a smoke/heat test is performed when the system is
commissioned. Pressing the test button on the alarms checks that the electronics, interconnect and
the horn are operational, so it is our view that it is not necessary to test with smoke or heat and a
'variation' can be invoked in order to to comply with the standard. However, if it is considered that
testing of smoke alarms is a necessity, we would only recommend the use of special purpose built
equipment such as the SAT332 Smoke Alarm Tester with the SAA300 Synthetic Smoke Aerosol. This
device ensures that sufficient synthetic “smoke” enters the sensor chamber and remains long enough
for the Smoke Alarm to respond. Other methods of smoke testing, eg a lighted taper or smoke
pellets, can give misleading results. Testers for Heat Alarms are also available. Do not test with a
flame as this can be a hazard in itself.
The Ei range of Smoke and Heat Alarms are suitable for use in Grades D, E and F systems as defined
in the British Standard which covers alarm systems in domestic dwellings,
BS 5839: Pt.6. It states
that these alarms “should be cleaned periodically in accordance with the manufacturers instructions”.
Our recommendations are as follows:
- Regularly check to see that the green mains power light is on.
- Press the test button weekly to check all alarms in the system.
- Regularly check that the red light under the test button or on the cover flashes approx
every 40 seconds.
- Clean the cover of the alarm regularly using a barely damp, lint free cloth.
- On a monthly basis (at least) check the alarm for signs of contamination from dust,
cobwebs or insects. Use a vacuum cleaner around the cover of the alarm to remove
contamination.
- Check (at least annually) that the alarm will operate on back-up battery power only by
switching off the mains supply and pressing the test button.
16. Can I use a
relay to signal
other devices?
17. Can I use the
relay to connect
to a 24 Volt Fire
Alarm System
18. How often should
the alarms be
tested?
19. Should the
alarms be
tested with
smoke/heat?
5
20. What
maintenance
schedule is
recommended?