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SBS-H2
Hydrogen Gas Detector Kit
For battery charging rooms and other areas where hydrogen gas may be present
INSTALLATION, OPERATION & MAINTENANCE
INSTRUCTIONS
Protects Life, Property and Profits
Electrical Safety – UL 61010-1
®
Compliant with MFPA 70E
and IEEE Recommendations
Pollution Degree 2
1-800-554-2243
www.sbsbattery.com
Test@sbsbattery.com
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Summary of Contents for SBS H2
- Page 1 SBS-H2 Hydrogen Gas Detector Kit For battery charging rooms and other areas where hydrogen gas may be present INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS Protects Life, Property and Profits Electrical Safety – UL 61010-1 ® Compliant with MFPA 70E and IEEE Recommendations...
- Page 2 This detector is added protection, not a substitute for prudent safety measures, for where hydrogen gas may be present. For large or highly-sensitive areas, SBS recommends installing additional sensors for increased coverage area. The hydrogen sensor does not provide protection from fires or hydrogen explosions.
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Page 3: Table Of Contents
Table of Contents Description Page Section Overview Benefits How It Works Specifications Sensor Main Control Installation 8 - 11 Operation Electrical Testing Testing the Sensor 10.0 Troubleshooting/Maintenance 14 - 15 11.0 SBS-H2 Users Manual, Rev. 07-17-TNEMH2 Page 3 July 2017... -
Page 4: Description
Main Unit and Accessories Part No. Description Hydrogen Gas Detector SBS-H2 Includes: one (1) main control, one (1) H2-SENSOR and one (1) 25 ft. cable Junction Box with Knockouts, 4 11/16" X 4 11/16", Metal H2-JB H2-SENSOR Hydrogen Gas Sensor Only (No Cable) H2-SENSOR-25FT Additional/Replacement Hydrogen Gas Sensor with 25 ft. -
Page 5: Overview
Sparks or hot surfaces can ignite hydrogen gas. The SBS-H2 hydrogen detector acts as a monitor and provides a visual and audible alarm when hydrogen is detected. The unit also has a 1% concentration relay that can trigger exhaust fan operation and a 2% concentration relay that can trigger a building management/alarm system (via SCADA/Modbus) before the gas reaches the lower explosive limit (LEL) of 4.1%. -
Page 6: Specifications
Mounting Wall: two 3/16" screws (not included) H2-JB Junction box: 4 11/16" x 4 11/16" 2-gang junction box Power Requirements/Options Warning: Power requirements for the unit and relays should not exceed min/max specifications 120 Vac, 50/60 Hz Nominal (Terminal J8) -
Page 7: Sensor
5.0 Sensor The H2-SENSOR consists of an electronic sensing element whose electrical conductivity increases when hydrogen is detected at its surface. Conductivity of the sensor is proportional to the gas concentration, which is continuously monitored by the electronic alarm circuits. -
Page 8: Installation
Power and alarm wires can run through the sides of the unit. Alarm Wiring Input Power H2-JB Junction Box Mountable (optional) Mounts to a standard, 4 11/16" x 4 11/16" 2-gang junction box Hardwire Option Run AC and/or DC power and alarm wires through back of the unit, into the gang box and out through conduit. - Page 9 For 120 Vac power, an 18-3 gauge insulated line cord is required. For 9 - 58 Vdc power, use 18-2 conductor insulated cable from the DC supply. For relay wires, use stranded wire. Maximum wire size for connector terminations is 14 AWG. SBS-H2 Users Manual, Rev. 07-17-TNEMH2 Page 9 July 2017...
- Page 10 SBS supplies a tie-wrap to secure the AC mains’ wiring. The tie wrap can rotate up to 270 degrees to accommodate your installation. Disconnection of Supplying Power When the unit is hard wired, an external 10 Amp (minimum) circuit-breaker or switch should be installed to act as a disconnecting device.
- Page 11 Use the 1% relay (Terminal J6) for the warning condition and the 2% relay (Terminal J3) for the alarm condition. 3. Replace the front cover on the alarm box. SBS-H2 Users Manual, Rev. 07-17-TNEMH2 Page 11 July 2017...
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Page 12: Operation
(blinking green) Warning and Warning (2% H Alarm Relay Energized (same flash rate as strobe) Sensor/Cable Fault None None None Communication None None None with Sensor Lost (plugged in, but not lit) SBS-H2 Users Manual, Rev. 07-17-TNEMH2 Page 12 July 2017... -
Page 13: Electrical Testing
5. Turn off gas and remove from sensor. 6. Repeat Steps 1-5 above using the 2% H2 air gas cylinder to activate the 2% alarm and relay. The 2% alarm threshold is connected to the red LED, the audible alarm and the strobe light up, which will activate during testing. - Page 14 Verify the AC and/or DC power cables are installed per the connection diagram on page 11. Relays The SBS-H2 system was designed for the relays to operate in a failsafe condition when the power supply is interrupted. If the fan connected to a relay runs as soon as the unit is powered on, the unit has been wired for the use of the Normally Open contact instead of a Normally Closed contact.
- Page 15 The SBS-H2 Hydrogen Alarm System is not a standalone safety device and does not provide protection from hydrogen explosions. The relay contacts are intended to be connected to a safety system, enabling audible alarms, system shutdown, ventilation, or other measures to ensure monitoring of hydrogen gas occurs before concentrations reach dangerous levels.
- Page 16 SBS-H2 Users Manual, Rev. 07-17-TNEMH2 Page 16 July 2017...