Honeywell 5820XL manual Calculating Current Draw and Standby Battery

IntelliKnight 5820XL Installation Manual

3.6Calculating Current Draw and Standby Battery

This section is for helping you determine the current draw and standby battery needs for your installation.

3.6.1Current Draw Worksheet Requirements

The following steps must be taken when determining 5820XL current draw and standby battery requirements.

1.You will use the Current Draw Worksheet to determine current draw and standby battery requirements. Use Table 3-1if installing SK SLC Devices and Table 3-2if installing Hochiki SLC Devices. For the 5820XL, the worst case current draw is listed for the panel, addressable devices, and all SBUS 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 the Current Draw Worksheet on 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 for the 5820XL control panel.

If the current is above 6.0 A you will need to use a notification power expander(s) such as the Silent Knight 5495 or the 5895XL intelligent power expander, to distribute the power loads so that the 5820XL or the power expanders do not exceed their power rating. Refer to the current draw worksheets provided with the 5495 or the 5895XL manuals so you do not exceed their power requirements.

6.Complete the remaining instructions in the appropriate Current Draw Worksheet for deter- mining battery size requirements.

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