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European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)208 743 8880
Document No. D211-00-401-IS-SC-UL Issue A 22-07-2022 Sheet 1 of 4
FIRE INSTRUCTION MANUAL
D2xB1LD2 LED Beacons
For use in Hazardous Locations
1) Fire Alarm Ratings
1.1 Public Mode Fire Alarm Ratings
The D2xB1LD2DC024 is certified for use a as public mode visual alarm device in accordance with UL1971 Third Edition and
UL1638 Fifth Edition / CAN/ULC-S526 Fourth Edition.
For use in public-mode fire alarm systems the beacon must be installed without the wire guard or plastic lens cover.
The beacon must be set to one of the certified flash patterns of 1Hz, 1.33Hz or 2Hz (for DIP switch settings see section 10). For light
output ratings see section 2.
Up to 6-off units can be connected to the same wire run without a separate synchronization module and meet the synchronization
requirements of UL1971 & UL1638 / CAN/ULC-S526.
1.2 Private Mode Fire Alarm Ratings
All models are approved for use as Visual Appliance for use in Fire Alarm Systems – Private Mode.
For private mode fire alarm use the beacons must only be fitted with clear or red plastic lens covers and must be set to one of the
certified flash patterns of 1Hz, 1.33Hz or 2Hz (for DIP switch settings see section 10).
For light output ratings see section 12.
2) Light output for Fire alarm use
In order to meet the requirements for UL 1971, (D2xB1LD2DC024 when used with 1Hz, 1.33Hz or 2Hz Flash rates and without
plastic lens cover and wire guard only), the installation must be carried out to the correct NFPA standards and guidelines.
2.1
Horizontal Light Output Dispersion for wall mounting – public mode
0°
15°
15°
30°
45°
60°
75°
90°
90°
30°
45°
60°
75°
Fig. 1 – Horizontal dispersion angles for wall mounting
