Bosch Appliances Smoke Alarm D2071A User Manual
Bosch | 09/04 | 74-06200-000-F
12
D2071A | Operations & Installation Guide |
2.3.3
Mode 3
Mode 3 (Figure 6) uses a 1.8 k
Ω
EOL resistor at the end
of the loops. Trouble Reports are sent on an open
circuit. This mode is required for sprinkler supervision
in NFPA 72 central station and remote station slave
applications or for Trouble Reports from the FACP. Use
Mode 3 for 72 central station slave applications.
circuit. This mode is required for sprinkler supervision
in NFPA 72 central station and remote station slave
applications or for Trouble Reports from the FACP. Use
Mode 3 for 72 central station slave applications.
The Mode 3 status conditions are:
Alarm (Closed): 0.0 VDC to 1.7 VDC
Normal: 1.9 VDC to 5.8 VDC
Trouble (Open): 6.0 VDC to 10.2 VDC
D2071A transmits an Alarm Report for a trouble
condition using a Mode 1 or Mode 2 circuit to monitor
FACP trouble output or sprinkler valve tamper.
condition using a Mode 1 or Mode 2 circuit to monitor
FACP trouble output or sprinkler valve tamper.
2.3.4
Mode 1 and Mode 2 Restrictions
Use Mode 3,
not Mode 1, for sprinkler supervision
(stand-alone) in NFPA 72 remote station installations.
Only use Mode 2 when a NC valve tamper device must
be used, and only on AHJ approval.
Only use Mode 2 when a NC valve tamper device must
be used, and only on AHJ approval.
Refer to
Section 1.5 Listings and Approvals on page 4
for
more information about modes and the NFPA
requirements.
requirements.
2.3.5
Wiring
Stand-alone Applications
1.
Connect the supervision devices such as valve
tamper switches (up to 20 for each circuit) to
Terminals 10 and 11 (Zone 2) or Terminals 11 and
12 (Zone 3) as shown in Figures 4 through 6 on pages
11 and 12.
tamper switches (up to 20 for each circuit) to
Terminals 10 and 11 (Zone 2) or Terminals 11 and
12 (Zone 3) as shown in Figures 4 through 6 on pages
11 and 12.
2. Program Class “B” Mode for the wiring
configuration you use. Use no more than 100
Ω
resistance on the sensor loops for the Class “B”
circuits.
circuits.
10
11
10
11
NC
C
NO
1
Figure 6:
Mode 3 Class “B” Wiring
1 - 1.8 k
Ω
EOL resistor
Slave Communicator Applications
1.
When connecting the D2071A to an FACP, use the
Mode 3 configuration for the slave communicator
applications (Figures 4 through 6).
Mode 3 configuration for the slave communicator
applications (Figures 4 through 6).
2. Connect Terminals 10 and 11 (Zone 2) or Terminals
11 and 12 (Zone 3) to the trouble outputs (dry
closure) on the FACP.
closure) on the FACP.
3. Connect Terminal 10 or 12 to the NO contact and
connect Terminal 11 to the C contact.
4. Install a 1.8 k
Ω
resistor between the NO and NC
contacts.
5. Program Class “B” Mode for Mode 3.
2.3.6
Class “B” Circuit Parameters
1.
Using a voltmeter measure the voltage across the
terminal connections to determine the electrical
condition of the Class “B” supervisory circuits (refer
to Figures 4 through 6 for loop voltages).
terminal connections to determine the electrical
condition of the Class “B” supervisory circuits (refer
to Figures 4 through 6 for loop voltages).
2. Connect the loop and power the D2071A.
2.4
Initiating Circuit Alarm Relay
Use Terminals 16, 17, and 18 for initiating
circuit alarm relay connections.
circuit alarm relay connections.
When using the optional Initiating Circuit Alarm Relay,
install a D136 Relay in Socket K6. The D136 provides a
Form “C” dry contact, rated at 2 A maximum current at
30 VDC (power from an independent supply). The relay
activates (reverse state) when the Class “A” Alarm
Initiating Circuit (Zone 1) goes into an alarm condition.
It deactivates when the circuit restores to normal.
install a D136 Relay in Socket K6. The D136 provides a
Form “C” dry contact, rated at 2 A maximum current at
30 VDC (power from an independent supply). The relay
activates (reverse state) when the Class “A” Alarm
Initiating Circuit (Zone 1) goes into an alarm condition.
It deactivates when the circuit restores to normal.
•
Terminal 17 is the common (C) terminal.
•
Terminal 16 is the normally closed (NC) terminal.
•
Terminal 18 is the normally open (NO) terminal.
In a normal state Terminals 16 and 17 have continuity.
When activated, Terminals 17 and 18 have continuity.
When activated, Terminals 17 and 18 have continuity.
2.4.1
Installation
To install a D136 Relay into socket K6 (labeled ALARM
RELAY):
RELAY):
1.
Slide back the D2071A cover to expose the socket
(Figure 7 on page 13).
(Figure 7 on page 13).
The D136 Relay has two pins on one side and three
pins on the other side.
pins on the other side.
2. Place the relay into the socket with the pins oriented
as shown in Figure 7.
3. Attach the relay flush left or flush right.
2.0 Installation