Specifications

MR-2320 Series Installation and Operation Manual
79
Appendix D: Specifications
MR-2320 series pre-action/deluge, releasing control
panel
MR-2306-R6 Relay adder module
Digital Signal Processor (DSP) based design. Fully configurable
using front panel LCD display with Password Access.
Electrical Ratings
AC line voltage
120 VAC 60Hz 1.7A /240 VAC 50 Hz 0.85 A, 10A slow blow fuse
on secondary of transformer
Power Supply Rating
6.5A AC maximim @ secondary of transformer
Battery
Type:
24VDC Gel-Cell/Sealed lead acid - 10AH to 26AH
Charging capability: 10AH to 26AH
Protection: 10A on board (F1) slow blow micro fuse
Indicating circuits
2 supervised style Y (Class B) indicating circuits, configured as
strobes or audibles. Terminals are labeled “SIG 1,2”
Power limited / Regulated 24VDC FWR / 1.7A @ 49C per circuit
Releasing Circuit
Power Limited/Special application 18.18-26.08VRMS/1.7A Max
Terminals are labelled “SIG 3,4”
Max power allowed = 5A
- 1.7A (aux power unfiltered if used)
- 0.5A (aux power filtered if used)
- 0.3A (4-wire smoke power if used)
If no auxiliaries are used the max power is 5A for the indicating
and the releasing circuits
Current consumption Standby 183mA/Alarm 318mA
Aux supply (non resettable)
Power limited / 21.1Vdc regulated / 500mA max
4-wire smoke supply (resettable)
Power limited/21.1VDC regulated / 300mA max
Unfiltered supply (full wave rectified)
Power limited / Regulated 24VDC FWR / 1.7A max at 49C
Minimum Load 5mA
Auxiliary Relays (Common alarm/supv/trb/ and
auxiliary second alarm)
Must be connected to a listed power-limited source of supply
FormC / 28VDC / 1A max
Initiating circuit
6 supervised style B (Class B) initiating circuits, configurable.
Terminals are labeled “DET”. Compatibility ID “A”
Power limited / 19VDC reg. / 3mA for detectors /110MVpp AC
ripple / 45mA max (alarm short)
1 RS-485 Connection
For remote annunciators. Terminals are labeled “RS-485”. Line
impedence is 120 ohms.
MR-2300-PRPolarity reversal city tie module (optional)
MR-2306-R6 Relay Module (optional)
Ground Fault Circuit
Less the 3K will generate a ground fault.
Must be connected to a listed power-limited source of supply
Contact rating FormC/ 28VDC per contact / 1A resistive load
max, zoned
Current consumption standby 0mA, alarm 80mA
MR-2300-A Input Class A Converter module
Standby 0mA / alarm 0mA
MR-2300-NC2 Output Class A Converter module
Standby 0mA / alarm 0mA
MR-2312-S12 Smart Relay Module
Must be connected to a listed power-limited source of supply
Contact rating FormC/ 28VDC per contact / 1A resistive load
max, zoned
Current consumption standby 30mA / alarm 140mA
MR-2306-ATW 8 Zone Remote Annunciator
Standby 35mA / alarm 90mA
Remote Trouble Indicator
Standby 35mA / alarm 35mA
Polarity reversal and city tie module
City tie
power limited / 24VDC unfiltered / 250mA max / 14ohms
trip coil
Polarity reversal power limited / 24VDC open / 12VDC at 3.5mA /
8.5mA max (shorted)
Polarity reversal supv terminal
24VDC (normal) / -24VDC (supervisory) / 0V (trouble)
Polarity reversal alarm terminal
24VDC (normal) / -24VDC (alarm) / 0V (trouble)
Current consumption standby 50mA / alarm 300mA (city tie in
use) / alarm 70mA (city tie not in use
System Model: MR-2320 Series Control Unit - Fire
Alarm, for Releasing services
System Type: Local Auxiliary (using MR-2300-PR),
Remote Protected Premises Station (using MR-2300-
PR or MR-2320-DR/R). Central Station Protected
Premises (using MR-2320-DR/R) For ULC
application also use MR-2300-PR for alternate
communication path.
Type of Service: A, M, WF, SS
Type of Signalling: Non-Coded
Applicable Standards: NFPA 12, 12A, 12B, 12, 15,
16,70,72,2001, UL-864 Rev. 9, ULC S-524, ULC S-
527-99