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1. Introduction
Thank you for purchasing a NV-100H single-point combustible gas detection /alarm system.
This system is used to prevent leakage of combustible gas. This equipment continuously monitors for leakage of
combustible gas, and indicates when a preset level has been exceeded by a lamp and sound.
Thoroughly read this instruction manual before using the equipment so it can be used correctly. Read the instruction
manual of the gas detector as well.
Symbols
The following symbols are used for safety purposes:
: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury
: Indicates a potentially hazardous situation which, if not avoided, will result in death or serious
injury
: Indicates a potentially hazardous situation which, if not avoided, may result in minor injury or
moderate injury. It may also be used to alert against unsafe practices.
:
Operational advice and or instruction.
2. Safe
Operation
Carefully read the following so you can use the equipment correctly.
Read and understand all applicable laws and regulations and ensure that you are in complete compliance with
the said laws and regulation before installing or operating the equipment.
Installing, wiring, and other works concerning the equipment should be carried out by qualified persons, following all
applicable federal, state, and local health and safety laws and regulations including OSHA.
WARNING
MEMO
CAUTION
DANGER
Operation checks using actual gas are very dangerous because combustible gas may explode and toxic gas is
harmful. An inspection must be carried out beforehand by persons with sufficient expertise or our service staff.
DANGER
Ground the equipment in order to prevent electric shocks.
In case of an alarm, carry out your predetermined measures for gas leakage.
This equipment is not explosion-proof. Install it in a non-hazardous location.
WARNING
Do not dissemble, alter the equipment, or change its structure and electric circuit. It may affect the
performance of the equipment.
If you control the interlock of external equipment etc. with equipment’s output signal, we are not responsible
for any injuries or damages caused by it.
The equipment is not waterproof. Install it in a place where it will not get wet.
Follow all related laws and regulations when using the equipment.
Do not use any equipment that generates electrical noises such as cellular phones or radio-communications
within 30 cm of the alarm panel.
CAUTION