ECS Device Installation 151455
4-29
4.5.4 Setting the Device Address
Use the on-board DIP switches to select an ID number for the ECS-INT50W. Refer to Figure 4-88 to
set the DIP switches for the desired ID number.
Once the ID number is set, you must add the ECS-INT50W to the system through programming.
Note: ECS-INT50W is powered by a NAC. It will not be found using JumpStart AutoProgramming.
4.6 Speaker Wiring
Each ECS-INT50W supplies one circuit for speaker connection. The speaker circuit can be supervised
and wired Class B or Class A. The speaker circuit is capable of 50 watts of power at 25 Vrms or 70.7
Vrms. See Section 4.4.4.1 for wire lengths.
4.6.1 Calculating Current Draw and Standby Battery
This section helps you determine the current draw and standby battery needs for your installation.
Complete the remaining instructions in Table 4-4.
Batteries larger than 18 AH will not fit in the main control cabinet, and must be housed in the RBB
Accessory Battery Cabinet. Maximum of 33 Amp Hours per system.
Table 4-4: Current Draw Calculations
Device
No. of
Devices
Current Per Device
Standby
Current
Alarm
Current
ECS-INT50W 25V 1 Standby: 52 mA 52 mA
Alarm: 275 mA 275 mA
ECS-INT50W 70V 1 Standby: 52 mA 52 mA
Alarm: 310 mA 310 mA
A Current Subtotals: mA mA
Notification Devices Refer to device manual for number of devices and current ratings.
B Current Subtotals: mA mA
C Total current rating of all devices in system (Line B) X 0.001 A A
D Number of standby hours (24 or 60 for NFPA 72) H
E Multiply line C (standby current) and D:Total standby AH AH
F Alarm sounding period in hours (For example, 5 minutes = 0.0833 hours): H
G Multiply line C (alarm current) and F:Total alarm AH
AH
H Add lines E and G (AH = Ampere Hours):Total AH required AH
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