Control Panel Dimensional Outline Construction Wiring Diagram SECTION C: Fuel Guide SECTION D: Operation Fueling OM-180 MODEL CONTENTS Inspection Before Operation Operation Adjusting Water Temperature Flow Rate and Water Temperature Turning Unit Off Operation Control by Timer (Option) Preventing Freeze Up...
SECTION A: SAFETY TIPS BE SURE TO FOLLOW THE FOLLOWING INSTRUCTIONS. The instructions which are contained in this manual are classified into the following two types, which are "WARNING" and "CAUTION". These instructions are intended to provide important information for safe operation.
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OTHER PRECAUTIONS This unit is only for indoor use. Avoid its exposure to rain or moisture. Do not use for drinking or cooking until the water supply has been approved by local authorities. Hot water (or cold water) left in heat exchanger or piping must not used for cooking or drinking. When using a large amount of hot water the temperature may change, even though the temperature setting has not been changed.
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. 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.
Heat and vaporized water are produced by the combustion process of this water heater. This rating does not take into account heat loss due to condensation of water vapor. External tank to be purchased from local suppliers. SPECIFICATIONS OM-180 Pressure Vapor Forced Flue On Demand...
SECTION C: FUEL GUIDE The OM-180 is designed for use with ASTM D3699 1-K Kerosene, ASTM D396 No.1 or No.2 Fuel Oil only. Use of low-quality oil will cause burner performance to drop, leading to abnormal combustion and reduced the unit life.
SECTION D: OPERATION WARNING: Use ASTM D3699 1-K Kerosene, ASTM D396 No.1 or No.2 Fuel Oil only. Never use gasoline, thinner, benzene, light oil or waste oil, or any other high volatile liquids. CAUTION: Make sure that the fuel is clean and free from dirt and water. Water and dirt may cause com- bustion failure and shorten the life of components such as the fuel pump.
RISK OF SCALD INJURY. BEFORE CHANGING TEMPERATURE SETTING SEE INSTRUCTION MANUAL. COLD THERMOSTAT ADJUSTING WATER TEMPERATURE Hot Water Temperature VERY HOT around 176°F around 158°F around 122°F around 95°F COLD around 68°F POWER OPERATION BURNER WARNING VERY HOT OM-180 ON/OFF...
TURNING UNIT OFF 130° F CAUTION POWER HOTTER WATER INCREASES THE RISK OF SCALD INJURY. BEFORE CHANGING TEMPERATURE VERY HOT SETTING SEE INSTRUCTION MANUAL. COLD ON/OFF THERMOSTAT PREVENTING FREEZE UP FLOW RATE 6.2 GPM 4.1 GPM 3.1 GPM OPERATION BURNER WARNING OM-180...
DRAINING WATER When you do not plan to use the unit for an extended period, the following procedures are recommend- 1. Turn the unit off. 2. Disconnect the power supply cord. 3. Close the fuel tank valve securely. 4. After closing the main water supply valve, open up all the faucets. 5.
SECTION E: ROUTINE MAINTENANCE INSPECTION AND MAINTENANCE WARNING: RISK OF INJURY FROM MOVING PARTS AND ELECTRICAL SHOCK. RISK OF INJURY FROM MOVING PARTS AND ELECTRICAL SHOCK. Disconnect the power sup ply cord before inspecting and servicing unit.All repairs should be left to professionals. RISK OF BACKFIRE AND INDOOR POLLUTION.
10. TEMPERATURE AND PRESSURE RELIEF VALVE (ONCE A MONTH) The temperature and pressure relief valve may become immovable at times due to corrosion of pipes or mineral deposits In the pipes. Pull up the lever of the temperature and pressure relief valve every month and make sure the valve is movable.
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PROBLEM POWER LAMP FAILS Disconnected power supply cord TO TURN ON Flame sensor malfunction WARNING LAMP Light on Flame Sensor LIGHTS AFTER Thermistor malfunction TURNING ON. BLOWER MOTOR Abnormal location and adjust- ment of electrode OPERATES, NO IGNITION Igniter malfunction. Abnormal lowering of electrical voltage Out of fuel...
WHO IS COVERED : The original purchaser at retail. WHAT WE WILL DO : TOYOTOMI will either repair or replace, at its option, all defective parts free of charge that are covered by this limited warranty on a carry-in basis, to your nearest authorized dealer or distributor of TOYOTOMI.