A Fire Alarm Battery is required to maintain the Rafiki Twinflex System in operation in the event of a mains supply failure. The following batteries are suitable:-
- 2 or 4 Zone Twinflex Fire Alarm Panels – 2 x 12V 2.2Ah Battery
- 8 Zone Twinflex Fire Alarm Panel – 2 x 12V 7.2 Ah Battery
Generally, these battery sizes provide up to 72 hours standby operation followed by 30 minutes alarm operation, but the standby period will be reduced if there are auxiliary standing loads such as may be imposed by devices powered from the auxiliary output.
Separate power supply units used in conjunction with output units may or may not require standby batteries depending on the application. For example, it may be acceptable for retained fire doors to close in the event of mains failure, in which case a battery is not necessary.
Alternatively, if a ventilation fire damper for instance is being held open via a maintained supply, it may have an undesirable affect on the building operation if it closes under mains fail condition, in which case a battery is required to maintain the supply.
The Rafiki Twinflex Fire Alarm Panels & Rafiki Twinflex Fire Alarm System are available now from Discount Fire Supplies.
This information has been referenced from an official Rafiki publication.