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Board Assembly Diagram
3.5 Board Assembly Diagram
AC Power
Input
120 VAC,
60 Hz, 1.5A
Battery
Connector
Phone Lines
Figure 3.2 shows the circuit boards, and annunciator. To remove the control board for repair, remove the three mounting screws which
hold the control board in the cabinet. Then, lift the control board out of the cabinet.
3.6 Calculating Current Draw and Standby Battery
This section is for helping you determine the current draw and standby battery needs if you are using Velociti addressable devices
(Table 3.3).
3.6.1 Current Draw Worksheet Requirements
The following steps must be taken when determining GWF-7075 current draw and standby battery requirements.
1.
For the GWF-7075, the worst case current draw is listed for the panel, addressable devices, and all SBUS expanders. Fill in the
number of addressable devices that will be used in the system and compute the current draw requirements for alarm and standby.
Record this information in the Current Calculation Worksheet 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 appliance circuits 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 2.5 A. This is the
maximum alarm current for the GWF-7075 control panel.
If the current is above 2.5 A you will need to use a notification power expander(s) such as the GFPS-6S NAC Expander, to
distribute the power loads so that the GWF-7075 or the power expanders do not exceed their power rating. Refer to the current draw
worksheets provided with the GFPS-6S manual so you do not exceed their power requirements.
6.
Complete the remaining instructions in the Current Calculation Worksheet for determining battery size requirements.
GWF-7075 Addressable Fire Alarm Control Panel Manual — P/N LS10147-002GF-E:E 06/11/2019
Form C
Trouble Relay
Figure 3.2 Model GWF-7075 Assembly
SLC In/Out,
SLC Programming
SBUS
Connections
Installation Instructions Criteria
On-board
Annunciator
Program
Port
NAC/Aux
Power Circuits
15
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