Unit installation

26
5.0 Appendix A: Power Supply and Battery Calculations
Ò See 6.0 Appendix B: ULC Listed Compatible Smoke Detectors on page 28 and 7.0 Appendix C: UL Listed Compatible Devices on page 31 for other compatible
devices.
Total Current Requirement: ALARM (B)______ Amps. (Value obtained from column B)
Battery Capacity Requirement:
Battery (AH) = ([STANDBY (A) ______ ] x [(24,60 or 90 Hours) ___ ]) +
([ALARM (B) ______ ] x [Alarm in Hr.] _____) = (C) ______AH
Battery Selection: Multiply (C) by 1.20 to derate battery.
IMPORTANT NOTICE
The main AC branch circuit connection for Fire Alarm Control Panel must provide a dedicated continuous power without provision of any disconnect
devices. Use #12 AWG wire with 600-volt insulation and proper over-current circuit protection that complies with the local codes. Refer to 3.0 Technical
Specifications on page 23 for specifications.
POWER REQUIREMENTS (ALL CURRENTS ARE IN AMPERES)
Model Number Description Qty Standby
Total
Standby
Alarm
Total
Alarm
MR-2900
Fire Alarm Control Unit (includes
MR-2931, MR-2905, MR-2902
X0.092 = 0.107 =
MR-2900
Unique LED’s
X0.005
= n/a =
MR-2910 Network Communication Module X 0.005
= 0.005 =
MR-2938 Conventional Input Circuit Module X 0.018
= 0.101 =
MR-2929 Addressable Input Circuit Module X 0.050
= 0.050 =
MR-2909 Addressable Input Circuit Module X 0.001
= 0.001 =
MR-2928 Conventional Input Circuit Module X 0.014
= 0.094 =
MR-2919 Addressable Input Circuit Module X 0.005
= 0.005 =
MR-2614 LED Annunciator X 0.020
= 0.155 =
MR-2622
Annunciator Strip
X0.005
= 0.125 =
MR-2644 LCD Annunciator X 0.030
= 0.070 =
MR-2900-CITY City Card X 0.020
=
0.315
(reverse polarity mode)
0.035
(in alarm (+ load - 65mA for
3 circuits)
=
MR-2900-DACT Digital Communication Module X 0.040
= 0.060 =
MR-2109-3 Digiquad Module X 0.008
= 0.0008 =
MR-2944 Annunciator X 0.075
= 0.075 =
MR-2915 LED Driver Card X 0.001
= 0.010 =
MR-2920 Strip Printer X 0.125
= 0.800 when printing =
MR-D1010-R1 Fibre Optic Modem X 0.075
= =
MR-D1010-R2 Fibre Optic Modem X 0.150
= =
MR-2690 Isolation Module X 0.010
= =
Two-Wire Smoke Detectors X š
= =
Four-Wire Smoke Detectors X š
= =
Signal Load (bells, horns, strobes, and etc.) X š
= =
Auxiliary Power Supply for Annunciators, etc.
= =
Total currents (Add above currents) STANDBY
(A)
ALARM
(B)