Operation & Installation Manual RFS1 V2
MA365 Rev 3
9 of 46
2.2.4
Connection to RFS1 V2
Field wiring as shown in Figure 2 below is same as the standard RFS1 wiring. The
bi-metallic switch contact is connected between Interconnect and positive terminals
(with protection diode and series resistor) on SUB1034 (60
⁰
) / 1035 (80
⁰
) board.
When the ambient temperature rises to the fixed temperature value, the bi-metallic
N/O contact closes, Interconnect voltage goes high and activates all the smoke or
heat alarms interconnected to HS60V2 or HS80V2. The red LED will turn on only
when the heat switch closes. The roof space heat detector provides 12V output for
Remote Indicator Light (RIL), with selectable “Latching” and “Non-Latching” mode.
The RIL will be reset when key-switch on the panel is switched to “OFF” or “FIRE”
position.
Figure 2 Connection of roof space detectors
2.3
Limitation of Smoke / Heat Alarms
Smoke/Heat Alarms have significantly helped to reduce the number of fire fatalities
in countries where they are widely installed.
However independent authorities have stated that they may be ineffective in some
circumstances. There are a number of reasons for this:
•
The Alarms will not work if the mains power supplied by RFS1 V2 control
panel is off and the back-up battery is depleted.
•
Smoke/Heat Alarms will not detect fire if sufficient smoke/heat does not
reach or prevented to reach the Alarm. Smoke/Heat may be prevented from
reaching the Alarm if the fire is too far away, for example, if the fire is on
another floor, behind a closed door, in a chimney, in a wall cavity, or if the
prevailing air draughts carry the smoke/heat away. Installing Smoke/Heat
Alarms on both sides of closed doors and installing more than one
Smoke/Heat Alarm as recommended in this manual very significantly
improves the probability of early detection.
•
The Alarm may not be heard due to background noise, distance from the
bedroom or closed doors.
•
A Smoke/Heat Alarm may not wake a person who has taken drugs or
alcohol.
•
Smoke/Heat Alarms may not detect every type of fire to give sufficient early
warning. They are particularly ineffective with fires caused by escaping gas,
violent explosions, poor storage of flammable rags and/or liquids, (for
example petrol, paint, spirits etc). Overloaded electrical circuits, arson and
children playing with matches.
•
Smoke/Heat Alarms don’t last indefinitely. For example, if there is a build-up
of contamination, performance will be impaired. The manufacturer
recommends replacement of the Smoke/Heat Alarms after 10 years as a
precaution.
