Honeywell ZyAIR G-3000 Determining the Size of the Standby Battery, 3-26, Total Current, Device

VISTA-40 Installation and Setup Guide

3.In Table 3, enter devices connected to the Alarm Output. Calculate alarm currents, then add to get the Alarm Output current subtotal.

Table 3: Alarm Output Current Load

		Total Current
Device	Device Current X	Standby	Alarm
Model #	# of Units

4.In Table 4, enter the total calculated subtotals of all listed outputs from Tables 1 through 3, then add to get the combined current.

Table 4: Total VISTA-40 Current Load

Total Current

Standby Alarm

XXXXXX

XXXXXX

XXXXXX

XXXXXX

XXXXXX

XXXXXX

Polling Loop Subtotal (see Table 1)

Aux. Power Subtotal (see Table 2)

Alarm Output Subtotal (see Table 3)

VISTA-40 PCB Current (Includes 2- wire smoke detector loading on zone 1)

250mA

330mA

XXXXXX

Alarm Output Subtotal

(terminals 4 & 5 – 1.7A max.)

Total Current Load

Determining the Size of the Standby Battery

The cabinet supplied with the control panel can house batteries of up to 12V, 14AH (two 12V, 7AH batteries wired in parallel). The VISTA-ULKT kit provides a cabinet that can house batteries of up to 12V, 17.2AH and that may be used with this panel. The total standby current drawn from the auxiliary power and polling loop outputs combined must be limited to 270mA when 14AH batteries are used; and to 390mA

Use Table 5 to determine the required backup battery capacity and use Table 6 to determine the battery model number. A dual battery harness is supplied that allows two batteries to be wired in parallel for increased capacity.

5.Using the total calculated from Table 4, calculate the battery capacity required for the installation.

when 17.2AH batteries are used.

	DO NOT use Gates batteries (sealed lead-acid
	type). These batteries require a different
	charging voltage than is supplied by the panel.
UL	Household Fire or Combination
	Household/Fire/Burglary installations require
	the use of a backup battery that is capable of
	providing 24 hours of standby time followed by
	4 minutes of alarm time. UL1023 Household
	Burglary-only installations require the use of a
	backup battery that is capable of providing 4
	hours of standby time followed by 4 minutes of
	alarm time.

Table 5: Battery Capacity Calculation Table

Capacity	Formula
Standby	For 4-hour standby time:
Capacity	Total standby current X 4 hours
	X 1.4 contingency factor.
	For 24-hour standby time:
	Total standby current X 24
	hours X 1.1 contingency factor.
Alarm	For 4-, 5-, or 15-minute alarm
Capacity	time:
	Total alarm curr.
	X	0.067 (4 min)
	X	0.250 (15 min)

Calculated

Value

Total	Add standby and alarm
Capacity	capacities

3-26