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WARNING
When the pilot turndown test is complete, turn OFF the power switch to shut down the power.
Restore all test jumpers and limit interlock/regulator settings to their previous states. If
operation begins without the above steps, damage to the equipment, gas leak or explosion
may result.
If lockout occurs, be sure to do a prepurge before restarting the system. If the combustion
chamber and gas flue are not ventilated to remove any unburned gas, the ignition process
may cause an explosion.
If a check is performed using a flame simulator without dismounting this device, be sure
to close the fuel valve. When a flame simulator is used during normal operation, the flame
detector reports that a flame is present even if the pilot burner and main burner are not
ignited, with the result that fuel is supplied continuously. This could cause an explosion.
This device has a limited product life. Beyond the product life, the risk of device failure
becomes higher. Replace this device within its product life.
If the system is locked out, do not reset it until the cause of the problem has been eliminated.
If lockout occurs, reset it only after removing the cause. Also, do not enter reset input
repeatedly.
Operating this product improperly could result in a serious combustion equipment accident.
Do not use the alarm output as safety output.
CAUTION
Be sure to use this device correctly, within the ranges specified in this user's manual.
Otherwise device failure or malfunction could result.
Do not install where exposed to any of the following:
•
Certain chemicals or corrosive gases (ammonia, sulfur, chlorine, ethylene compounds, acid,
etc.).
•
Splashing water or excessive humidity.
•
High temperatures.
•
Prolonged vibration.
This device has a protective structure equivalent to IP20. Take measures to protect it from
dust. In particular, if the equipment is designed to comply with CE/UL standards, be sure to
mount this device in an instrument panel with IP54 or equivalent protection.
Installation, wiring, inspection, adjustment, etc. should be carried out by a trained and
experienced technician who has knowledge and technical skills related to combustion
equipment and flame safeguard control devices.
Do not start regular operation of the equipment without first completing the trial-run
adjustments for this device, as well as the tests specified by the equipment manufacturer.
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