Table of Contents
Advertisement
ECC-50DA Remote Amplifier
3.
Connect the red wire from the battery harness to the positive (+) side of battery #1.
Figure 1.11 Battery Connections to the ECC-50DA
1.1.9 Calculating Current Draw and Standby Battery
This section helps determine the current draw and standby battery needs for your installation (18
Ampere Hours max. will fit in cabinet). Complete the remaining instructions in Table 1.3.
For batteries larger than 18 AH, use the BB-26 or BB-55F Battery Box. A maximum of 33 Ampere
Hours is allowed per system.
Device
ECC-50DA (25V system)
ECC-50DA (70.7V system)
ECC-CE4
A
Notification Devices
B
C Total current rating of all devices in system (Line B) X .001
D Number of standby hours (24 or 60 for NFPA 72)
E Multiply line C (standby current) and D:
F Alarm sounding period in hours (For example, 5 minutes = .0833 hours):
G Multiply line C (alarm current) and F:
H Add lines E and G (AH = Ampere Hours):
14
CIRCUIT 4
CIRCUIT 3
CIRCUIT 2
+
IN
–
+
OUT
–
+
IN
–
+
OUT
–
+
IN
–
+
OUT
Note: Batteries have been
rotated to show the top sides
for illustration purposes only.
Battery 1
No. of
Devices
Standby:
1
Alarm:
Standby:
1
Alarm:
Standby:
0 or 1
Alarm (All Channels):
Refer to device manual for number of devices and current ratings.
Table 1.3 Current Draw Calculations
ECC-50/125DA Instruction Manual — P/N LS10027-000FL-E:D 5/21/2015
firealarmresources.com
BATTERY
CIRCUIT 1
+ –
–
+
IN
–
+
OUT
–
Battery 2
Standby
Current Per Device
85 mA
525 mA
100 mA
580 mA
20 mA
180 mA
Current Subtotals:
Current Subtotals:
Total standby AH
Total alarm AH
Total AH required
Installation
Alarm
Current
Current
85 mA
525 mA
100 mA
580 mA
mA
mA
mA
mA
mA
A
A
H
AH
H
AH
AH
Advertisement
Table of Contents
