Page 440 - Installation Training Binder FIT1-3

Frequently Asked Questions
11/24/15

HYD-2C Q&A
Q: What level are the alarms set at?
A: Level 1 = 0.4% H2 by Volume (10% LEL), Level 2 = 1.2% by Volume (30% LEL).
Q: How many alarm levels are there?
A: There are 2 alarm levels.
Q: Is start up service available?
A: Yes.
Q: What is the warranty period on the HYD-2C?
A: 1 year.
Q: How many sensors are needed with the HYD-2C?
A: See “Hydrogen Gas Monitor Product and Features Selector Guide”.
Q: How many sensors can be used with the HYD-2C?
A: 1 or 2 can be used.
Q: What is the Calibration Kit model number?
A: HYD-2C-Cal.
Q: Can the HYD-2C be used for anything other than hydrogen?
A: Yes. Please specify what type of gas you are looking to use it for.

HYD-4C Q&A
Q: What level are the alarms set at?
A: Level 1 = 0.4% H2 by Volume (10% LEL), Level 2 = 1.2% by Volume (30% LEL).
Q: How many alarm levels are there?
A: There are 2 alarm levels.
Q: Is start up service available?
A: Yes.
Q: What is the warranty period on the HYD-4C?
A: 1 year.
Q: How many sensors are needed with the HYD-4C?
A: 1 to 4 sensors. System is expandable as needed.
Q: What is the Calibration Kit model number?
A: HYD-4C-Cal.
Q: Can the HYD-4C be used for anything other than hydrogen?
A: Yes. Please specify what type of gas you are looking to use it for.
Q: What Codes & Regulations are required for proper Ventilation to prevent hydrogen gas buildup?
A: The following codes and regulations require ventilation:
- UFC 1999 Article 64
- IFC 2006 Article 608
- IFC 2003 Article 608
- IFC 2003 Article 609
- NFPA 1Article 52
- OSHA 1910.268
- OSHA 1926.441
Q: Do the monitors have a built in audible alarm?
A: Yes
Q: Can the gas monitors be connected to a Building Monitoring System (BMS)?
A: Yes
Q: Can the monitors be used to sense other gases than hydrogen?
A: Yes. Use a sensor specified for the specific gas to monitor.
Q: How often do the systems require calibration?
A: The recommended calibration interval is quarterly.
Q: Is the calibration kit required during a start-up service?
A: Yes.
Q: When Start-up Service required?
A: Start-up service is recommended for Mission Critical installations where operation assurance must be verified. This is
typically the case when a client performs commissioning.