Honeywell 19546GM1, GM-1 installation manual System Description

1 System Description

The Manning GM-1 is designed to accept a single 4/20 mA current input signal, plus provide a regulated 24 VDC supply to operate all sensors manufactured by Honeywell Analytics.

The Manning GM-1 is housed in a rugged 14 gauge gasketed steel enclosure. Behind the clear plexiglass window is a 20-segment vertical LED bargraph display which gives a visual indication of the gas concentration.

The unit has warning and alarm level indications on the front panel, and warning and alarm relays allowing the user to incorporate functions such as ventilation control, remote horns, security system monitoring, and automatic shutdown.

Designed to be highly reliable when properly installed, all relays are energized during normal operation, and a sensor fault monitoring circuit will indicate a fault and trip a dedicated fault relay if the signal falls below

1.4 mA.

The unit has an audible horn which will sound if an alarm or fault condition is detected. The silence switch will silence the horn until the next event. If an alarm condition initiates the horn, the horn will clear automatically when the alarm relay clears.

The unit has a power-up delay feature that places all outputs in normal conditions for one minute to allow for sensor stabilization.

The Manning GM-1 will support all of Manning sensors, including oxygen, which requires a down- scale alarm.

All components that are in contact with voltages above 40 volts are UL listed, including the enclosure.

Note: The Manning GM-1 is for use in non-classified areas only.

Manning GM-1 Gas Monitoring Alarm System 19546 GM1 07/09 REVD Copyright © 2009 Honeywell Analytics. All Rights Reserved. 5