Table Of Contents
1.0 Description......................................................................1
2.0 Specifications.................................................................1
3.0 Installation.......................................................................1
4.0 Operation.........................................................................2
5.0 FCC Compliance Notice.................................................3
6.0 FCC Phone Connection Notice to Users......................3
7.0 Canadian Department of Communications..................3
8.0 Wiring Diagram...............................................................4
1.0 Description
The DS7420i is an accessory board designed for use with the
DS7400Xi control/communicator. It allows the control to be used
in NFPA 72 installations. The DS7420i provides two supervised
12 VDC signaling outputs, one Class A (Style D) input zone, and
dual phone line transmission and supervision.
• System is Power Limited except for battery terminals. All
wiring entering this enclosure must be power limited.
• FCC registration number: ESVUSA-20294-KX-N
• DOC number: 1249 5895 A
2.0 Specifications
• Auxiliary Power Requirements: Supervisory: 12 VDC,
nominal, 20 mA. Alarm: 140 mA.
• Indicating Appliance Circuit (Bell Output): 12 VDC, special
application supervised output supplies up to 1.75 A for
vibrating bells.
• Auxiliary Output Circuit: 12 VDC, special application
supervised output latches on alarm and resets upon system
reset. It is intended for strobes/indicating appliances and
supplies up to 1.0 A.
• Initiating Device Circuit (terminals 13-16): The Class “A”
loop is intended for connection of Normally Open (closed on
alarm) dry contact initiating devices such as waterflow
switches.
The Class “A” loop will not support loop powered devices
such as two-wire smoke detectors.
• Maximum Loop Resistance: Class “A” loop tolerates a
maximum loop resistance of 150 ohms total.
• Operating Temperature: +32° to +120°F (0° to +49°C)
• Ringer Equivalence Number (REN) = 0.1B
3.0 Installation
The DS7420i should be mounted within a DS7400Xi enclosure.
For programming information, refer to the
DS7400Xi Reference
Guide
(P/N: 40816 for Ver. 4+, P/N: 28995 for Ver. 3+) .
NOTE: The DS7400Xi control must be installed in accordance
with NFPA 72 guidelines.
3.1 Hardware Installation
• Disconnect power from the control panel. Unplug the
transformer and remove the red battery lead.
NOTE: For Commercial Fire applications, the TR1850 trans-
former (Basler Electric BE116250CAA) must be
enclosed in the AE-TR16 Transformer Enclosure. The
wiring from the AE-TR16 to the control and the wiring to
the outlet box in conduit must also be enclosed in the
AE-TR16.
• Mount the DS7420i Module in the enclosure as shown on
page 4. Use the supplied mounting clips and screws.
3.2 Internal Wiring
• Connect internal wiring as shown on page 4.
- Connect the options bus of the DS7420i (terminals 1-4) to
the options bus of the control panel.
- Connect the battery input (terminals 5 and 6) to the control
panel battery using the dual battery clips provided.
- Connect the control line phone input (terminals 21-24) to
the phone line output (13-16) of the DS7400Xi.
- If using the Class “A” zone, connect the zone input
terminals (11 and 12) to the zone 1 input (19 and 20) of the
control panel.
Note: The DS7420i is fixed as address 15 on the control
options bus. If you are using a DS7400Xi Rev. 3
control/communicator, keypad 15 will not be available
for system use. See your DS7400Xi Reference Guide.
Installation Instructions
for the
DS7420i Dual Phone Line/Bell Supervision
Module
(53 pages)
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