The D2112/D2112E Control/Communicator and D202 keypad come packaged together in a metal housing. Mount the enclosure so you have easy access to both units.
Auxiliary Power Terminal 9 supplies 350mA at 10.2 to 13.9 VDC for keypads and other powered devices. Please refer to Radionics Technogram: Smoke Detectors Compatible with D2112 (73-07115-000).
Programming
The D2112 is a self-contained control/communicator featuring 8 hardwire on-board zones, expandable up to 24 points through point expansion, and supporting up to 16 users with arm/disarm codes. It uses standard phone dialing but can also be programmed for pulse or DTMF dialing; Underwriters Laboratories has listed it as suitable signal system control unit for use with NFPA 72 Household Fire Warning Equipment installations.
This panel comes equipped with a D202 keypad. A D5200 Programmer or another keypad may be used to program the D2112. Please refer to the POINT CODES Group in the D2112/D2112E Program Entry Guide for details regarding programming options and instructions.
Connecting a Keyswitch
You may connect up to one momentary contact keyswitch as an arming station on the D2112. For best results, this should be connected to one of the point sensor loops (points 2-6 only; do not connect terminals 7 and 8). External relay outputs or D133 Relay Modules may be used as appropriate to activate arming status lights on the keypad for this purpose – for more information see RELAYS section of D2112/D2112E Program Guide.
Auxiliary Power
The D2112 provides positive (+) voltage to detection devices through terminals 10 and 13. For alarm output, connect a D8132 Relay Module whose common has been connected to both keypads’ commons as well as D2112’s common. This ensures all devices share power equally.
Note: Terminal 6 always provides power. You can use this terminal for compatible alarm horns, siren drivers and piezo fire sounders that work with the D2112. Point 1 on the D2112 is a powered and monitored point, where its panel keeps tabs on normal, shorted and open conditions and responds accordingly.
Lock the Standby Switch before beginning programming, and unlock it when finished to send a RE-BOOT report over to your phone line and disarm the panel.
Communication Failure
Assuming you don’t use wireless keypads, the D2112 Control/Communicator connects to the telephone network through either RJ38X or RJ31X jacks and can connect multiple devices – keypads and remote programmer included – via an RJ38X/RJ31X plug. Should your usage exceed your maximum Ringer Equivalence Number (REN), its panel may not ring when calls arrive – contact your phone provider to find out what limit applies in your area.
Communication Failure
If the D2112 cannot connect to its phone receiver after five attempts, it enters communication failure mode and deletes any stored reports and flashes the OK light intermittently until communication resumes; pressing the Clear key silences any tones that have been generated during that period; when communication resumes normally again, its steady state OK light returns. For instructions on programming points used with keyswitches please see the POINT CODES group of the D2112/D2112E Program Entry Guide.
Terminal 9 To maintain reliable operation of D2112 systems and keypads connected to its auxiliary power outputs, including keypads, the current draw must not exceed 350mA at 10.2 to 13.9 VDC. A short on Terminal 9 within five feet from the panel prevents proper functioning; for additional auxiliary power outputs use external relay outputs or D133 Relay Modules.
Alarm Power Terminal 7
The D2112/D2112E program’s alarm power output, configured as desired, supplies a fixed 1.5A at 10.2 to 13.9 VDC and can support two-wire smoke and glass break detectors, bell or siren drivers, keypads and other devices as desired.
Auxiliary Power and Bell Circuit Protection
The D2112/D2112E offers circuit protection for its auxiliary and alarm power outputs. If either output circuit shorts to ground, then either timeout expires or you perform a panel reset; similarly if an alarm output shorts to ground while an auxiliary output is active, a trouble alarm is generated; to reduce these problems using larger batteries as your standby source can help significantly.
Ground Start
Auxiliary Power Positive provides 350mA at 10.2 to 13.9 VDC to keypads and relay outputs, as well as approved two wire smoke/glass break detectors connected to Point 1. For programming instructions please see POINT CODES in the D2112/D2112E Program Entry Guide.
Keyswitch Arming Station
Connect a momentary contact keyswitch (points 2-6 only; do not use points 7 and 8 for this application) to the point sensor loop and operate it to short and restore circuit, toggle On/Off panel status lights accordingly and arm points at random using this momentary contact keyswitch. Points which were armd will activate arming status lights on the D2112/D2112E Programmed Manual).
Ground Start
Connect the 0V reference to terminal 9 on the D2112/D2112E to prevent excessive current flow on the point battery and heavy discharge. Use a polarized plug or connector when making this connection.
Installation Sheets Each keypad comes equipped with installation sheets containing mounting instructions. Follow them carefully when setting up and wiring all detectors, keypads, indicating devices (bells, sirens and strobes), detection devices and keypads at their desired locations across your premises; do not connect anything else until this step has been completed successfully.
Keypads
The D2112/D2112E supports up to four radionics D202 keypads. Wire each keypad parallel according to its installation sheet. Connect it directly to its location on the panel but wait to connect any additional or alarm power outputs until all related wiring has been completed and locked off by using the Standby Switch.
Panel
The D2112/D2112E requires a 7.0Ah, 12 VDC standby battery for fire and combined fire/burglary systems. We suggest you test this regularly by running the User System Test provided in the D2112/D2112E Programming Manual.
Battery Replacement
As it’s common to have an alarm system installed when purchasing a home, find out what model keypad(s) connect to its control panel. One method would be removing one from the wall and looking at its back for information regarding which control panel model corresponds with it; or alternatively search Google images with “keypad” and your panel model to bring up photos that you can compare against your keypads to help identify their model number(s).
Before installing any detectors or indicating devices (bells, sirens or strobes), first ensure the Standby Switch is secured – this is to prevent accidental disconnection from the system and will allow you to move forward with installation. After making this connection, installation can continue as usual.
Start by installing the D202 Keypad, detectors and indicating devices in that order. Wire each of the D202 keypads together as instructed on their diagrams before connecting all wires to five feet of 22 AWG copper wire for connectivity with the panel. For more details on connecting keypads to panels please refer to their installation sheets included with each product.
Note: The D2112 is intended to operate with two auxiliary and one alarm power outputs, with terminals 6 and 7 providing maximum 1.5A output current. To increase backup battery capacity for your D2112, larger batteries of 7 Ah or more should be used.
To minimize damage from electrical overload, the D2112 includes circuit protection for both its auxiliary and alarm outputs. Two self-resetting protection devices protect these outputs against short circuits while a fuse provides bell circuit protection for D2112 alarm power outputs. When used with its alarm output terminals 6 and 7, or when an alarm output fuse opens while its bell rings out. A trouble Point 99 report will be generated if there is an incident such as shorting at terminal 6 or 7.
