Honeywell Silent knight 5895XL - Current Draw and Battery Calculation

5895XL Manual - P/N 151142-L8:L 08/09/2017 9
Calculating Current Draw and Standby Battery Before You Begin Installing
2.6 Calculating Current Draw and Standby Battery
This section is for helping you determine the current draw and standby battery needs for your installation.
2.6.1 Worksheet Requirements
The following steps must be taken when determining 5895XL current draw and standby battery requirements.
 Filling in the Current Draw Worksheet, Table 2.4 (Section 2.6.2)
1. For the 5895XL, the worst case current draw is listed for the panel, addressable devices, and SLC expanders. Fill in the number of
addressable devices and expanders that will be used in the system and compute the current draw requirements for alarm and
standby. Record this information in Table 2.4 at Line A.
2. Add up the current draw for all auxiliary devices and record in the table at Line B.
3. Add up all notification appliance loads and record in the table at Line C.
4. For notification appliances and auxiliary devices not mentioned in the manual, refer to the device manual for the current ratings.
5. Make sure that the total alarm current you calculated, including current for the panel itself, does not exceed 6.0 A. This is the
maximum alarm current allowable.
6. Complete the remaining instructions in Table 2.4 for determining battery size requirements.
Maximum Battery Standby Load
Table 2.3 shows the maximum battery standby load for the 5895XL based on 24 and 60 hours of standby. The standby load calculations
of line G in the Current Draw Calculation Worksheet (Table 2.4) must be less than the number shown in Table 2.3 for the battery size
used and standby hours required.
2.6.2 Current Draw Worksheet
For *each 5895XL in the installation, use Table 2.4 to determine current requirements during alarm battery standby operation when SK
SLC devices are installed.
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Table 2.3 : Maximum Battery Standby Load
Rechargeable
Battery Size
Max. Load for 24 hrs. Standby,
5 mins. Alarm
*Max. Load for 60 hrs. Standby,
5 mins. Alarm
7 AH 270 mA 105 mA
12 AH 475 mA 190 mA
17 AH 685 mA 270 mA
33 AH 1370 mA 540 mA
* Required for NFPA 72 Auxiliary Protected Fire Alarm systems for Fire Alarm Service (City Box) and Remote
Station Protected Fire Alarm systems (Polarity Reversal) and Digital Alarm Communicator/Transmitter (DACT).
NOTE: 33AH max battery size for FM (Factory Mutual) installations
Table 2.4 Current Draw Worksheet for SK SLC Devices
Device # of Devices Current per Device
Standby
Current
Alarm
Current
For each device use this formula: This column X This column = Current per number of devices.
5895XL Intelligent Power Module
(Current draw from battery)
1* Standby 40 mA 40 mA
Alarm:
160 mA 160 mA
Additional 5895XL
(Daisy-chained to this module)
(7 max.) Standby 10 mA mA
Alarm: 10 mA mA
Addressable SLC Detectors
SK-PHOTO Standby/Alarm: .30 mA
1
mA mA
SK-PHOTO-T mA mA
SK-HEAT mA mA
SK-HEAT-HT mA mA
SK-ACCLIMATE mA mA
SK-HEAT-ROR mA mA
SK-DUCT
2
(includes PhotoR) mA mA
SK-BEAM (without integral test) SLC Standby/Alarm:
2 mA
Aux. Pwr Standby:
2 mA mA
Alarm: 8.5 mA mA