Bosch D1255RB Manual de usuario descargar pdf (Pagina 27)

| Approved Applications Compliance Guide | 8.0 NFPA 72 Fire Alarm Applications

Bosch Security Systems, Inc. | 3/12 | F01U266055-01 27

8.4 Central Station or Local Systems

Central Station or Local Systems require 24 h of standby plus 5 min of alarm operation at the end of

the 24-hour period. A single battery is sometimes adequate for central station systems, but two

batteries must be installed to meet the basic standby requirements for a local system installation. Use

the battery ampere-hour (Ah) calculations to confirm compliance. The formula in Table 10 includes the

calculation for 5 min of alarm operation at the end of the 24-hour period, as well as a 10%

contingency factor that allows for depletion of battery capacity with age.

Because of changing regulations, verify the necessary time with your local AHJ (authority

having jurisdiction).

Table 10: Central Stations or Local Systems Ah Calculation Formula

Total B

Hours Total C

Alarm Operation

Contingency Total Ah

( ________ x 24) + ( ________ x 0.083) + 10% = _________

1 Refer to Table 7 on page 24.

2 Value = Minutes of alarm operation

3 Total Ah requirements must not exceed the Ah capacity of batteries:

One D126 Battery = 7 Ah

Two D126 Batteries = 14 Ah

One D1218 Battery = 17.2 or 18 Ah

Two D1218 Batteries = 34.4 or 36 Ah

8.5 Remote Station or Auxiliary Systems

Remote Station or Auxiliary Systems require 60 h of standby plus 5 min of alarm operation at the end

of the

60-hour period. A D8132 Battery Charger Module with additional batteries installed in a separate

D8109 or D8108A Enclosure might be required in the system to meet the basic standby requirements

for a remote station or auxiliary system installation. Use battery Ah calculations to confirm

compliance. The formula in Table 11 includes the calculation for 5 min of alarm operation at the end of

the 60-hr period, as well as a 10% contingency factor that allows for depletion of battery capacity with

age.

Because of changing regulations, verify the necessary time with your local AHJ (authority

having jurisdiction).

Table 11: Remote Station or Auxiliary Systems Ah Calculation Formula

Total B

Hours Total C

Alarm Operation

Contingency Total Ah

( ________ x 60) + ( ________ x 0.083) + 10% = _________

1 Refer to Table 7 on page 24.

2 Value = Minutes of alarm operation

3 Total Ah requirements must not exceed the Ah capacity of batteries:

One D126 Battery = 7 Ah

Two D126 Batteries = 14 Ah

One D1218 Battery = 17.2 or 18 Ah

Two D1218 Batteries = 34.4 or 36 Ah

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Bosch D1255RB Manual de usuario Pagina 27

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