Macurco™ HD-11 Hydrogen Gas Detector
Contents
1. other areas Accommodation spaces should be well ventilated when household cleaning supplies or similar contaminants are used Do not cover or obstruct visual alarm LED Doing so may adversely affect product performance and result in sickness or death Do not disassemble unit or attempt to repair or modify any component of this detector This detector contains no user serviceable parts and substitution of components may adversely affect product performance and result in sickness or death CAUTION e Avoid the use of harsh cleaning materials abrasives and other organic solvents Such materials may permanently scratch the surfaces damage the sensor labels or instrument housing e f you have any doubts about the applicability of the equipment to your job situation consult an industrial hygienist or call Macurco Technical Service USE INSTRUCTIONS AND LIMITATIONS WARNING Each person using this equipment must read and understand the information in these User Instructions before use Use of this equipment by untrained or unqualified persons or use that is not in accordance with these User Instructions may adversely affect product performance and result in sickness or death USE FOR The Macurco Hydrogen Gas Detector HD 11 is a low voltage 12 24VAC or VDC dual relay hydrogen detector The unit is designed to work with control panel or other building management equipment to help monitor levels of hydrogen gas in a room or2. For proper use see supervisor or User Instructions or call Macurco Technical Service HD 11 may not function effectively below 32 F or above 120 F Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death This detector helps monitor for the presence and concentration level of certain specified airborne gases Misuse may produce an inaccurate reading which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death For proper use see supervisor or User Instructions or call Macurco Technical Service The HD 11 is not designed to measure compliance with Occupational Safety and Health Administration OSHA commercial or industrial standards When the unit is powered up it performs a self test during which the green LED light will blink for a period of one and one half to two minutes Afterward the green LED light will turn on continuously to indicate the unit is in normal operation ARMED If the self test fails or the green LED light does not turn on continuously do not use Failure to do so may adversely affect product performance and result in sickness or death Immediately exit the environment if there is an alarm condition on the detector Failure to do so may result in sickness or death This detector will only indicate the presence of combustible gas at the sensor Combustible gas may be present in
3. WARRANTY The Macurco HD 11 Combustible Gas Detector is warranted to be free from defective material and workmanship for a period of two 2 years from the date of manufacture stamped on the unit If any component becomes defective during the warranty period it will be replaced or repaired free of charge if the unit is returned in accordance with the instructions below This warranty does not apply to units that have been altered or had repair attempted or that have been subjected to abuse accidental or otherwise The above warranty is in lieu of all other express warranties obligations or liabilities THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED TO A PERIOD OF TWO 2 YEARS Macurco shall not be liable for any incidental or consequential damages for breach of this or any other warranty express or implied arising out of or related to the use of said equipment Manufacturer or its agents liability shall be limited to replacement or repair as set forth above Buyer s sole and exclusive remedies are return of the goods and repayment of the price or repair and replacement of non conforming goods or parts Manufactured by Aerionics Inc Round Rock Texas Email info aerionicsinc com i i i Phone 1 877 367 7891 M Rev 5 14 2012 Gas Detection Experts Aerionics 2012 All rights reserved Macurco is a trademark of Aerionics Inc
4. intended for use in industrial applications such as refineries chemical plants etc The unit can cover approximately 900 sq ft The coverage depends on air movement in the room or facility Locate the unit high in the room where storage batteries are being charged or where there may be other hydrogen sources Extra detectors may be needed near any areas were people work or the air is stagnant A N WARNING This product is intended for use in ordinary indoor locations of family living units and office workspaces The HD 11 is not designed to measure compliance with Occupational Safety and Health Administration OSHA commercial or industrial standards INSTALLATION 1 Mount the HD 11 high on a wall about one foot down from the ceiling Use the same spacing as for smoke detectors 30 foot centers 900 square feet per detector N The three part plastic case allows the HD 11 to be either surface mounted or installed over a four inch square or double gang electrical box providing a near flush mount The HD 11 snap on front cover will need to be removed before installation To remove it lightly pry the front cover off of the mounting plate middle section with a coin or flat screwdriver inserted into the vent at the bottom The cover will snap off exposing the electronics and mounting plate oo For flush mount remove the 2 screws and rear cover from the mounting plate and use the appropriate hole pattern for installation The four holes t
5. of line resistors E O L R which are provided with the panel The HD 11 does not have an internal audible sounder and must be connected to an audible device that provides at least 85 DB sound output POWER UP N WARNING When the unit is powered up it performs a self test during which the green LED light blinks for a period of one and one half to two minutes Afterwards the green LED light will turn on continuously to indicate the unit is in normal operation ARMED If the self test fails or the green LED light does not turn on continuously do not use Failure to do so may adversely affect product performance and result in sickness or death When power is first applied to the detector it will go through a warm up period of one and one half to two minutes during which alarms are inhibited The green LED light will turn on and off during the delay period The green light will turn on continuously ARMED afterwards to indicate the unit is in normal operation OPERATION 1 Once the HD 11 is operational ARMED the green light will be on continuously If gas is detected the red LED ALARM turns on and the SPDT alarm relay activates to indicate the alarm condition 2 Inthe configuration as shipped from the factory the HD 11 is self restoring When the air clears of gas the red light turns off and the relay switches to its normal state A jumper wire on the circuit board can be clipped to allow the unit to latch in upon alarm Once latch
6. or carbon monoxide FEATURES Detects Hydrogen Gas SPDT Alarm and N C Trouble Relays Can Be Self Restoring or Latching Electronic Sensors No Maintenance or Recalibration Temperature Compensated Simple Installation and Operation Supervised Sensor SPECIFICATIONS SIZE 4 2 X 5 X 1 5 8 inches SHIPPING WEIGHT 0 54 pound VOLTAGE 12 to 24 VAC or VDC CURRENT non alarm 45 ma 12 VDC 22 ma 24 VDC 65 ma 12 VAC 45 ma 24 VAC CURRENT in alarm 70 ma 12 VDC 35 ma 24 VDC 100 ma 12 VAC 65 ma 24 VAC 4 COLOR White SENSOR MAINTENANCE Not required ALARM RELAY RATING 0 125 AMPS 40V 3VA TROUBLE RELAY 0 250 AMPS 40V 10VA OPERATING TEMPERATURE RANGE 32 to 120 F ALARM SET POINT 10 LEL HYDROGEN INSTALLATION AND OPERATING INSTRUCTIONS The following instructions are intended to serve as a guideline for the use of the Macurco HD 11 Hydrogen Gas Detector It is not to be considered all inclusive nor is it intended to replace the policy and procedures for each facility A N WARNING This detector helps monitor for the presence and concentration level of certain specified airborne gases Misuse may produce an inaccurate reading which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death For proper use see supervisor or User Instructions or call Macurco Technical Service LOCATION The Macurco Hydrogen Gas Detector HD 11 is NOT
7. GAS DETECTION 0 amp Macurco HD 11 Hydrogen Gas Detector User Instructions Important Keep these User Instructions for reference TABLE OF CONTENTS GENERAL SAFETY INFORMATION Intended Use List of Warnings and Cautions USE INSTRUCTIONS AND LIMITATIONS Use For Do Not Use For General Description Features Specifications INSTALLATION AND OPERATION INSTRUCTIONS Location Installation Power Up Operation Alarms Trouble Indicator MAINTENANCE Testing Cleaning Sensor Poisons WARRANTY QO OWNNNNNODOJOMOOUOOASLBALASBRBKRBROQDOD ODO GENERAL SAFETY INFORMATION INTENDED USE The Macurco Hydrogen Gas Detector HD 11 is a low voltage 12 24VAC or VDC electronic detector of hydrogen gas The HD 11 is designed for connection to alarm control panels Alarm control panels that work on 12 or 24 VDC can provide battery backup to the HD 11 This gas detector is NOT designed to detect smoke fire or carbon monoxide LIST OF WARNINGS AND CAUTIONS Each person using this equipment must read and understand the information in these User Instructions before use Use of this equipment by untrained or unqualified persons or use that is not in accordance with these User Instructions may adversely affect product performance and result in sickness or death Use only for monitoring the gas which the sensor and detector are designed to monitor Failure to do so may result in exposures to gases not detectable and cause sickness or death
8. a facility where hydrogen gas may be present for example where forklifts backup power supplies or golf carts battery charging stations are present AN Use only for monitoring the gas which the sensor and detector are designed to monitor Failure to do so may result in exposures to gases not detectable and cause sickness or death For proper use see supervisor or User Instructions or call Macurco Technical Service DO NOT USE FOR The Macurco Hydrogen Gas Detector HD 11 is NOT intended for use in industrial applications such as refineries chemical plants etc Do NOT mount the HD 11 where the normal ambient temperature is below 40 F 4 4 C or above 120 F 49 C The HD 11 mounts on a 4x4 or 2 gang electrical box supplied by the contractor DO NOT install the HD 11 inside another enclosure or protective cover unless it has good air flow through it The HD 11 is NOT designed to detect smoke fire or carbon monoxide Do NOT mount the HD 11 in a corner VAN WARNING HD 11 may not function effectively below 32 F or above 120 F Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death GENERAL DESCRIPTION The Macurco Hydrogen Gas Detector HD 11 is a low voltage 12 24VAC or VDC electronic detector of hydrogen gas The HD 11 is designed for connection to alarm control panels to help monitor levels of hydrogen gas This gas detector is NOT designed to detect smoke fire
9. ed in power will need to be interrupted to un latch the alarm condition e The HD 11 can be modified either before or after installation to have a latching output Pull off the cover and locate the jumper wire labeled CLIP FOR LATCH IN on the printed circuit board in the upper right hand side Clip or cut this jumper wire and separate the wire ends Now the unit will stay in alarm once gas has exceeded the pre set threshold until the power is interrupted When replacing the cover make sure the lights line up with their access holes 3 The HD 11 has a supervisory circuit of critical functions A trouble condition due to failure of a non reliable component results in both lights switching on and off and the normally closed trouble relay opening A power failure also causes the trouble relay to open ALARMS Immediately exit any environment if there is an alarm condition on the detector Failure to do so may result in sickness or death The final alarm is determined by the configuration of the control panel with the HD 11 only switching its relay to actuate the panel Do not connect the HD 11 to Fire Alarm Circuits or Burglar Alarm or other signals The illumination of the red ALARM light on the HD 11 indicates the alarm condition When an alarm occurs immediately evacuate the premises and seek assistance This detector will only indicate the presence of combustible gas at the sensor Combustible gas may be present in othe
10. oward the center of the mounting plate match the hole pattern of a double gang electrical box The four holes near the corners match the pattern of a four inch square box Mount the HD 11 so the TOP marked side of the mounting plate is at the highest side Snap the front cover back on when finished making sure that the lights line up with the access holes gt When using the HD 11 with normally closed initiating circuits use the Com and N C alarm relay connections or See wiring diagram and information below for connections of the HD 11 TYPICAL CONNECTION OF TWO HD 11 TO AN ALARM CONTROL PANEL Alarm Control Panel N O initiating circuit Battery back up 12 or 24 VDC Power supply Trouble Fuse or current limit at 1 0VA for each HD 11 relay N C V D 0 O red f 12 24V Alarm Control panels that operate on 12VDC or 24VDC are available with many features including battery back up automatic phone dialers auxiliary relays 6 The HD 11 uses a full wave bridge rectifier at its power input so that it is independent of the polarity of the input power It can operate on DC or AC voltages between 12 and 24 volts 7 A switching regulator is used to efficiently match the wide input voltage range to the fixed internal power system As a result the power consumption is fairly constant at about 0 75 watts in normal operation and 1 0 watt in alarm 8 The alarm control panel zone inputs must be terminated with end
11. r areas Accommodation spaces should be well ventilated when household cleaning supplies or similar contaminants are used In addition to the hydrogen gas that it is designed to detect the HD 11 can also be affected by a broad range of combustible gases Some of these that may cause an alarm are alcohol ammonia cleaning solvents paint thinner gasoline vapors and aerosol propellants Aerosol cans such as hair spray usually contain a combustible gas Always make sure that there is adequate ventilation when you use these products Proper location will minimize alarms due to normal use of household products TROUBLE INDICATOR The trouble signal is determined mostly by the configuration of the alarm panel with the HD 11 trouble relay only providing an open circuit for actuation A failure of the gas sensing element will result in both lights turning on and off and the trouble relay opening Failure of power supplies in the HD 11 or a lack of power to the detector will result in the trouble relay opening The most common expected trouble would be a break in the wiring between the panel and the HD 11 When a trouble signal occurs call the alarm panel installer for assistance Do not cover or obstruct visual alarm LED Doing so may adversely affect product performance and result in sickness or death MAINTENANCE The HD 11 does not require regular maintenance The unit uses a self purging semi conductor sensor that has a long life expectanc
12. y All service and repair of the HD 11 are to be performed by Macurco Macurco does not sanction any third party repair facilities Do not disassemble unit or attempt to repair or modify any component of this instrument This instrument contains no user serviceable parts and substitution of components may impair intrinsic safety which may adversely affect product performance and result in sickness or death TESTING Once the unit is fully operational the green light is on steady test the unit by directing gas from an unlit butane cigarette lighter into the sensor near the green light on the left hand side It will be necessary to hold the lighter valve open for 2 to 3 seconds The red light ALARM will turn on the alarm relay switches and any devices connected should activate The detector should be tested regularly by using gas from an unlit cigarette lighter as detailed above CLEANING The HD 11 should be cleaned using the soft brush attachment of your vacuum cleaner The HD 11 should be tested after cleaning to ensure the unit is operating normally 7 SENSOR POISONS The gas sensing tip in the detector is designed with extreme sensitivity to the environment As a result the sensing function of the tip may deteriorate if it is exposed to a direct spray from aerosols such as paints silicone vapors etc or to a high density of corrosive gases such as hydrogen sulfide sulfur dioxide for an extended period of time LIMITED
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