D2412 Installation Manual
Page 17
© 1997 Radionics
8/11/97 P/N 35115B
NFPA Standard
72
72
D2412 not listed for these applications
Minimum Hours of
Standby Battery
4
24 +
4 mins
alarm
24 +
4 mins
alarm
4
4
4
4
D2203 Enclosure
Included with panel
No
No
No
D8103 Enclosure
Optional
No
No
No
D8108A Enclosure
Optional
Choose
One
Req.
Req.
Req.
D8109 Enclosure
Optional
No
No
No
D126 Battery
1
1
1
1
1
1.
1
D127 Reversing Relay
Opt.
No
Opt.
Opt.
Opt.
Opt.
Opt.
D164 Telephone Cord
Required to connect panel to RJ31X Telco Block
D202A, D220A, D222,
D223 Command Center
1+
1+
1+
1+
1+
1+
1+
D262 Smoke Detector
Head
D261 Base
1•
1•
D431, D435, D438,
D440, D442, D448
Indicating Device
1+
1+
1+
Opt.
u
u
u
D1640 Transformer
Required for all applications
D8004 Transformer
Enclosure
Opt.
Opt.
Opt.
Opt.
Opt.
Opt.
D8122 Derived
Channel S.T.U.
Optional, contact TelCo for availability of derived channel service
D8130 Release
Module
Optional
System Chart
Standby Battery Requirements
Household Burglary and Commercial Burglary
Four hours of standby battery capacity required.
Standby Battery Calculation for Fire Alarm
Applications
NFPA 72 (Chapter 2) Household Fire Warning
Equipment
The NFPA (Chapter 2) Household Fire Warning Equip-
ment Standard requires 24 hours of standby plus four
minutes (.067 hrs) of alarm operation at the end of the 24
hour period.
You must use battery ampere hour (Ah) calculations to
verify compliance. The formula in the next column
includes a 10% contingency factor for depletion of battery
capacity with age.
NFPA 72 (Chapter 2) Ampere-Hour Calculation
Formula
(Total B ___ x 24 Hrs) + (Total C ___ x .067 Hrs) + (10%
Contingency) = Total Ah required.
Total Ah requirements must not exceed Ah capacity of
batteries.
Note: For Battery Calculations:
When system is idle, running on battery only, the current
draw from the battery is 125mA.
When the system is in communication, running on battery
only, and set for pulse dialing, the current draw from the
battery is 190mA.
Key
No
Req.
Opt.
1+
2+
1
u
*
= Not acceptable for this application.
= Require for this application.
= Optional for this application.
= One or more required for this application.
Consult the appropriate standard.
= Two or more required for this application.
Consult the appropriate standard.
= At least one detector required. You can
substitute other 2-wire detectors listed for
use with the D2412. You could use the
D262 with the D270 four-wire base or
other manufacturer’s four-wire detectors.
You must use a listed power supervision
relay with four-wire detectors.
= Listed bell (siren) housing required for
burglary alarm bell or siren.
= (Empty box) Not used for this application.
= D101 required for D8103 enclosure
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