Detector Parameter Settings Summary, Prealarm

MX4428 MXP Engineering / Technical Manual	Document: LT0273
Device Information and Programming

3.4 DETECTOR PARAMETER SETTINGS SUMMARY

The following table gives a summary of the MX4428 default and alternate settings, and approved range, for each detector type.

Detector	Default	Alternate	Range	Comments
814PH	12%	8%	8% - 12%	Enhancement is optional,
Smoke	(80 det units)	(37 det units)		default off.
814PH	Medium	N/A	Low, Medium,	Enhancement is optional,
Smoke			High (all	default off.
FastLogic			approved with
			nominal
			sensitivity =
			8%)
814PH Heat	63	N/A	60 - 65	Type B default.
component				Type A is option
				Off is option.
814CH	38ppm	66ppm(1)	23 - 66ppm(1)	Enhancement is optional,
CO	(0.3 MIC X)	(0.6 MIC X)		default off.
	(93 det units)	(160 det units)		(23ppm = 0.15 MIC X
				= 60 det units)
814CH Heat	63	N/A	60 - 65	Type A default.
component				Type B is option
				Off is option.
814I	0.39 MIC X	0.22 MIC X	0.2 - 0.4 (Aus)	0.59 MIC X =130 det
	(66 det units)	(23 det units)	0.2 - 0.6 (NZ)	units
814H	63	N/A	60 - 93 (Aus)	Type A default. Type B
			50 - 80 (NZ)	option.
				Types C/D by changing
				temperature to 93.
VLC800	Fixed at 100		0.005% / m to	Note that actual
			20% / m	sensitivity is adjusted by
				PC connected to the
				VLC800.

(1)66ppm is outside the approved range of the 814CH as an ionisation detector. However it is an accepted value as a CO detector.

Prealarm

The Prealarm default and alternate sensitivities will generally be about 70% - 80% of the corresponding alarm level. Note that Prealarm will also be more sensitive to rapidly changing conditions as it does not go through the step limiting filter.

Conversion

Det Units = Detector Units.

Temperatures are already converted by the MXP to degrees C and do not require conversion.

Page 3-12

24 March 2006

Issue 1.5

MX4428 specifications

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Tyco MX4428 Detector Parameter Settings Summary, Detector Default Alternate Range Comments

Models: MX4428

3.4 DETECTOR PARAMETER SETTINGS SUMMARY

Detector

Default

Alternate

Range

Comments

Prealarm

Conversion

MX4428 specifications