Safety Features - Toyotomi Oil Miser OM-180 Operation & Maintenance Instructions Manual

1. Ignition Safety Device (Flame Sensor)
The unit will automatically stop all operations if ignition fails or if the flame fails during combustion.
''WARNING'' lamp will light.
2. High Limit Thermistor
In order to prevent burns, the high limit thermistor automatically stops all operations if the water in the
heat exchanger reaches abnormally high temperatures due to temperature controller malfunction. The
''WARNING'' lamp will light.
3. Heat Exchanger Bi-Metal Switch
If the heat exchanger temperature becomes abnormally hot because of a malfunctioning thermostat, the
burner is automatically extinguished and the ''WARNING'' lamp will light.
4. Power Failure Recovery System
If power fails during water heater operation the unit will turn off. When power resumes the unit will
automatically reignite.
5. Fully Vented System
Flue pipe system provides outside air for combustion and vents all combustion products to the out-
doors.
6. Fusible Link Valve
If a household fire should occur, causing the fuel line or water heater to become extremely hot, the
fusible link valve will stop the fuel supply to the burner. This will prevent the fuel supply from the exter-
nal tank from continuing to flow into the house.
7. Fuel Strainer
Special strainer catches any dirt or impurities present in the fuel before it is sent to the burner.
8. Temperature Fuse
When the air around the heat exchanger rises to an abnormal level, the temperature fuse will turn the
unit off. The "WARNING" lamp will light.
9. Air Pressure Switch
When the air flow volume reduces or the flue pipe is clogged, the burner is automatically extinguished
and the "WARNING" lamp will light up.
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SAFETY FEATURES