Fire-Lite M302 User manual

INSTALLATION INSTRUCTIONS FOR M302(A)
TWO-WIRE CONVENTIONAL DETECTOR MONITOR MODULE
This information is included with the modules as a quick reference installation guide. Refer to the appropriate Fire-Lite product
manual for detailed system information. If the modules will be installed in an existing operational system, inform the operator
and local authority that the system will be temporarily out of service. Disconnect power to the control panel before installing the
modules.
GENERAL DESCRIPTION
The M302(A) monitor module allows addressable panels to interface and moni-
tor two-wire conventional smoke detectors. All two-wire detectors being moni-
tored must be UL compatible with the module.
The module is addressed through the communication line (SLC) of address-
able systems. When the module is interrogated, it transmits the status of one
zone of two-wire detectors to an addressable control panel. Status conditions
are reported as NORMAL, OPEN, or ALARM. The monitor module supervises
the zone of detectors and the connection of a power source.
Two rotary decade switches allow setting module addresses from 00–99. A
status LED indicator is provided and is controlled by code command from the
control panel. The module provides a magnetically activated test switch for
testing the module’s electronics and connections to the control panel (see Fig-
STATUS LED
ROTARY DECADE
ADDRESS SWITCHES
MAGNET TEST
POSITION
27
0
1
3
4
5
6
8
9
27
0
1
3
4
5
6
8
9
A78-2318-00
FIGURE 1.
MODULE CONTROLS AND INDICATORS
ure 1).
COMPATIBILITY REQUIREMENTS
To insure proper operation, this module shall be connected to compatible Fire-Lite addressable control panels only.
Conventional two-wire smoke detectors must be UL compatible with the UL
listed monitor module. For the ULC listed monitor module, the conventional 2-
wire smoke detectors must be ULC compatible with the monitor module. A list
of compatible two-wire conventional detectors is available from Fire-Lite (P/N
15384).
PACKAGE CONTENTS
(1) Two-wire monitor module, P/N M302
(1) 3.9K ohm end-of-line resistor (A2143-10)
(1) Off-white cover plate
(1) Screw pack for cover plate
MOUNTING
The M302(A) monitor module mounts directly to a 4 inch square electrical box
as shown in Figure 2. The box must have a minimum depth of 2-1/8 inches.
WIRING
NOTE: All wiring must conform to applicable local codes, ordinances and reg-
ulations.
1. Install module wiring in accordance with the job drawings and appropriate
wiring diagrams (Figures 3 – 5).
2. Set the address on the module per job drawings.
3. Secure the module to the electrical box (supplied by installer), as shown in
Figure 2.
4. Perform steps one, two, and three for all modules.
F400-09-00 1 I56-631-06
Fire-Lite, 12 Clintonville Rd., Northford , CT 06472 [phone]
A78-1327-00
FIGURE 2.
EXPLODED VIEW OF TYPICAL MODULE
DETAILING MOUNTING ARRANGEMENT

TESTING
The M302(A) monitor module can be tested with a test magnet available from Fire-Lite (M02-04-00, see Figure 1). The magnet
test checks the module’s electronics and connections to the control panel. Interfaced two-wire detectors must be tested inde-
pendently. Test two-wire detectors per manufacturer’s installation instructions.
M302(A) MONITOR MODULE WIRING DIAGRAMS
Figure 3. INTERFACE TWO-WIRE CONVENTIONAL DETECTORS, NFPA STYLE B
Figure 4. INTERFACE TWO-WIRE CONVENTIONAL DETECTORS, NFPA STYLE D
F400-09-00 2 I56-631-06
1 (–)
2 (+)
MODULE
(+)
(–)
(–) 9
(+) 8
(+) 7
(–) 6
M302(A)
MONITOR
FROM PANEL OR
(+)
(–)
CONNECT MODULES TO LISTED
COMPATIBLE ADDRESSABLE FIRE-LITE 
CONTROL PANELS ONLY.
32 VDC MAX.
TO NEXT
(+)
(–)
DEVICE
LISTED BATTERY BACK-UP, SWITCHED
DC POWER SUPPLY.
SEE REQUIREMENTS ON PAGE 4.
DO NOT LOOP WIRE UNDER TERMINALS. BREAK WIRE
RUN TO ENSURE SUPERVISION OF CONNECTIONS.
INSTALL MODULE PER MANUFACTURER'S
INSTALLATION INSTRUCTIONS.
IDC INSTALLATION WIRING MUST NOT EXCEED
DO NOT MIX FIRE ALARM INITIATING, SUPERVISORY,
OR SECURITY DEVICES ON THE SAME MODULE.
POWER TO THE MONITOR MODULE
MUST BE EXTERNALLY SWITCHED TO
CONTROL MODULE CAN BE USED TO
SWITCH POWER FROM A STANDARD
OPTIONAL BRANCH CIRCUIT
2-WIRE CONVENTIONAL DETECTOR
DETECTORS MUST BE UL LISTED COMPATIBLE WITH MODULE.
+
–
+
–
RESISTOR
(INCLUDED)
INITIATING DEVICE CIRCUIT (IDC) - NFPA STYLE B
3 (–)
4 (+)
(–)
(+) 5
UL LISTED POWER SUPPLY - SEE FIGURE 5.
PREVIOUS DEVICE
RESET THE DETECTORS. A C300
TO NEXT INTERFACE MODULE.
MODULE SUPERVISES SUPPLY
VOLTAGE AND DETECTOR LOOP.
COMMUNICATION LINE
POWER LIMITED: 90ma MAX; 28 VDC MAX
25 OHMS, 12 - 18 AWG.
3.9K EOL
REFER TO FIRE-LITE PRODUCT MANUAL
FOR WIRE SPECIFICATIONS.
ALL WIRING SHOWN IS SUPERVISED. A78-2394-631
(SHIELD) (SHIELD)
TERMINAL WIRING MUST BE POWER LIMITED.
1 (-)
2 (+)
MODULE
(+)
(-)
(-) 9
(+) 8
(+) 7
(-) 6
M302(A)
MONITOR
FROM PANEL OR
(+)
(-)
CONNECT MODULES TO LISTED
COMPATIBLE ADDRESSABLE FIRE-LITE
CONTROL PANELS ONLY.
32 VDC MAX.
REFER TO FIRE-LITE PRODUCT
MANUAL FOR WIRE SPECIFICATIONS
TO NEXT
(+)
(-)
DEVICE
LISTED BATTERY BACK-UP,
SWITCHED DC POWER SUPPLY.
SEE REQUIREMENTS ON PAGE 4.
DO NOT LOOP WIRE UNDER TERMINALS. BREAK WIRE
RUN TO ENSURE SUPERVISION OF CONNECTIONS.
INSTALL DETECTORS PER MANUFACTURER'S
INSTALLATION INSTRUCTIONS.
POWER TO THE MONITOR MODULE
MUST BE EXTERNALLY SWITCHED TO
CONTROL MODULE CAN BE USED TO
SWITCH POWER FROM A STANDARD
DETECTORS MUST BE UL LISTED COMPATIBLE WITH MODULE.
+
-
+
-
OPTIONAL BRANCH CIRCUIT
(-)
(+)
3 (-)
4 (+) 5
UL-LISTED POWER SUPPLY - SEE FIGURE 5.
PREVIOUS DEVICE
RESET THE DETECTORS. A C300
TO NEXT MONITOR MODULE.
MODULE SUPERVISES SUPPLY
VOLTAGE AND DETECTOR LOOP.
COMMUNICATION LINE
IDC INSTALLATION WIRING MUST NOT EXCEED
DO NOT MIX FIRE ALARM INITIATING, SUPERVISORY,
OR SECURITY DEVICES ON THE SAME MODULE.
2-WIRE CONVENTIONAL DETECTOR
INITIATING DEVICE CIRCUIT (IDC) - NFPA STYLE D
POWER LIMITED: 90ma MAX; 28 VDC MAX
25 OHMS, 12 - 18 AWG.
3.9K EOL RESISTOR
REQUIRED AT TERMINALS
8 & 9 (INCLUDED)
ALL WIRING SHOWN IS SUPERVISED. A78-2395-631
(SHIELD) (SHIELD)
TERMINAL WIRING MUST BE POWER LIMITED.

Figure 5.
RISER POWER SUPPLY AND WIRE RESISTANCE CALCULATIONS
The power source must be capable of supplying a minimum amount of current to a riser circuit of monitor modules. It is accept-
able in some jurisdictions to supply the minimum current required to allow a percentage of monitor modules to be in the alarm
state while the remaining monitor modules are in the standby state. The formulas below are provided for calculating the maxi-
mum current required from a power supply (Imax) to support a riser circuit of monitor modules with a percentage of monitor
modules in the alarm state.
Imax = Vmax/Rmin
Rmin = 2060/( 2.68
*
Na) + (N )
Where:
(Na) is the number of monitor modules required to be supported in the alarm state; and
(N) is the total number of monitor modules on a given riser circuit.
Example:
Na = 5, N = 15 Rmin = 72.5 = 2060/( 2.68
*
5) + (15 )
The constants were derived by reducing equations that utilize the internal resistances of the module under worst case conditions.
Designing a system where it is permitted to support a percentage of modules in the alarm state allows a longer wire run for the
riser circuit. The following formula is provided for calculating the maximum resistance (Rlmax) of the wire run for the riser circuit.
Rlmax = .085(Rmin)
The constant was derived by reducing equations that were written from a low battery supply voltage of 20.4 VDC and the min-
imum supply voltage of 18.8 VDC required for proper operation of the module.
The following table is provided for calculating the maximum cable length allowed for a given riser circuit if Belden cable is used.
Resistance of a pair of conductors in 1000 feet of Belden cable:
Belden 9571 (18 AWG solid copper, twisted pair) 12.6 Ω
Belden 9574 (18 AWG solid copper, twisted-shielded pair) 12.4 Ω
Belden 9572 (16 AWG solid copper, twisted pair) 8.2 Ω
Belden 9575 (16 AWG solid copper, twisted-shielded pair) 8.2 Ω
Belden 9580 (14 AWG solid copper, twisted pair) 5.0 Ω
Belden 9581 (14 AWG solid copper, twisted-shielded pair) 5.0 Ω
Belden 9582 (12 AWG solid copper, twisted pair) 3.2 Ω
Belden 9583 (12 AWG solid copper, twisted-shielded pair) 4.0 Ω
C300 SERIES CONTROL MODULE SWITCHING POWER SUPPLY
F400-09-00 3 I56-631-06
1 (-)
2 (+)
MODULE
(+)
(-)
CONTROL
9
8
7
6
5
3
4
J1 & J2 
FORM C RELAY OPERATION
WHEN BOTH TABS
J1 & J2 ARE BROKEN
RELAY CONTACT RATINGS:
RESISTIVE:
INDUCTIVE:
PILOT DUTY:
2 A @ 30 VDC
1 A @ 30 VDC (.6 PF)
.6 A @ 30 VDC (.35 PF)
.3 A @ 110 VDC (.35 PF)
.3 A @ 120 VAC (.35 PF)
FROM PANEL OR
(+)
(-)
SEE REQUIREMENTS ON PAGE 4.
POWER SUPPLY, LISTED FOR FIRE
PROTECTION WITH BATTERY BACKUP
(+)
(-)
(MONITOR LOSS OF PRIMARY POWER)
CONTACTS SHOWN IN STANDBY.
CONTACTS MAY HAVE SHIFTED TO THE 
ACTIVATED STATE DURING SHIPPING.
CONTROL MODULE MUST BE MADE TO
COMMUNICATE WITH THE PANEL PRIOR
TO CONNECTING CIRCUITS CONTROLLED
BY THE MODULE.
TO NEXT
(+)
(-)
DEVICE
CONNECT MODULES TO LISTED COMPATIBLE
ADDRESSABLE FIRE-LITE CONTROL
PANELS ONLY.
32 VDC MAX.
SEE FIRE-LITE PRODUCT MANUAL
FOR WIRE SPECIFICATIONS
(+)
(-)
PREVIOUS DEVICE
SWITCHED RISER
CIRCUIT FOR
INTERFACE MODULES
C300 CONTROL MODULE
IS NOT REQUIRED IF
SWITCHABLE POWER 
IS AVAILABLE.
COMMUNICATION LINE
C304(A)
A2396-631
NORMALLY OPEN
NORMALLY CLOSED
RELAY COMMON
(SHIELD) (SHIELD)

SPECIFICATIONS
Temperature: 32° to 120° F (0° to 49° C)
Humidity: 10% to 93% Noncondensing
Weight: .5 lbs (232 gm)
Dimensions: 4-1/2
" H, 4 " W, 1-1/4 " D
(Mounts to 4
" square by 2-1/8 " deep electrical boxes.)
Test Features: Magnetically activated reed switch.
Accessories: SMB500 Surface Mount Box for 300 series modules
M02-04-00 Test Magnet for testing devices
Communication Line – Terminals 1 & 2
Voltage: 15 – 32 VDC
Current: 200 µA Max (Standby)
1.3 mA Max (Style D enabled)
5.1 mA Max @ 24V (LED latched on)
Communication Line
Loop Impedance: 40 ΩMax
External Power Supply Requirements – Terminals 3 & 4
Voltage: 22.2 – 25.5 VDC (Filtered, Regulated, and Power-Limited)
Ripple: 100mV RMS Max
Current: 90 mA per module
Power must be interrupted to reset detectors. The monitor module must have a minimum of 18.8 VDC at termi-
nals 3 and 4 to function properly. Minimum supply current and maximum wire resistance formulas are provided for a
riser circuit on page 3. Ground fault detection must be accomplished by the control panel.
Initiating Device Circuit (IDC) – Terminals 6, 7, 8, & 9
Voltage: 16 – 28 VDC (Ripple: 100mV RMS Max)
Current: 90 mA Max
IDC Loop Impedance: 25 ΩMax
Standby Current: 10.0 mA Max
Detector Current in Standby: Up to 2.4 ma
Alarm Current: 20 mA minimum
Style: Style B (class B) / Style D (class A)
EOL Resistance: 3.9K ohm nominal
Detector loop current is sufficient to ensure operation of one alarmed detector per zone. For compatible detec-
tors refer to the Fire-Lite detector compatibility chart.
F400-09-00 4 I56-631-06
©Fire-Lite 1994