User guide

Model MS-25 Installation and Operation Manual
3-6 53688
3.6.1.1 Current Draw Worksheet for MS-25 UL 864
Use Table 3-2 to determine amp-hour requirements during alarm/battery standby operation.
(Copy the page if additional space is required.) You can install up to 25 SLC devices and two
ANN-80 Remote Annunciator.
Table 3-2: Current Calculation Worksheet for 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.
Fire Panel (Current draw from
battery)
1
Standby: 135 mA 135 mA
Alarm: 220 mA 220 mA
Accessory Modules
ANN-80 Remote Annunicator
2
Standby: 37 mA mA
Alarm: 40 mA mA
Addressable SLC Detectors
HFS-P
(25 max.
detectors or
modules in any
combination)
Standby: 0.27 mA
Alarm: 6.5 mA
mA mA
HFS-PT mA mA
HFS-D mA mA
HFS-T mA mA
SD355 mA mA
SD355T mA mA
D355PL mA mA
H355 mA mA
Addressable SLC Modules
HFS-MM
(25 max.
detectors or
modules in any
combination)
Standby/Alarm: 0.375 mA mA mA
BG-12LX Standby/Alarm: 0.375 mA mA mA
HFS-MR Standby/Alarm: 0.255mA mA mA
MMF-301 Standby/Alarm: 0.375 mA mA mA
CRF-300 Standby/Alarm: 0.375 mA mA mA
I300 10 max. Standby/Alarm: 0.45 mA mA mA
A Total System Current
Auxiliary Devices Refer to devices manual for current rating.
Alarm/Standby: mA mA mA
Alarm/Standby: mA mA mA
Alarm/Standby: mA mA mA
B Auxiliary Devices Current
Notification Appliance Circuits Refer to device manual for current rating.
Alarm: mA mA
Alarm: mA
mA
Alarm: mA
mA
Alarm: mA
mA
C Notification Appliances Current
mA
D Total current ratings of all devices in system (line A + line B + C) mA mA
E Total current ratings converted to amperes (line D x .001): A A
F Number of standby hours (24 or 60 for NFPA 72, chapter 1, 1-5.2.5): H
G Multiply lines E and F. Total standby AH AH