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Instantaneous Oil-Fired Water Heater

Operation and Maintenance Instructions

MODEL

OM-122DW

CONTENTS

IMPORTANT

READ AND UNDERSTAND INSTRUCTIONS BEFORE INSTALLING OR USING THIS WATER HEATER.

RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.  CHECK LOCAL CODES AND ORDINANCES FOR

PERMITTED USE.

CAUTION

THIS WATER HEATER SHALL NOT BE USED FOR COMMERCIAL USE OR FOR ANY PURPOSES OTHER

THAN HOT WATER SUPPLY USES. OTHER USAGE MAY CAUSE A MALFUNCTION OR SHORTEN ITS

SERVICE LIFE. DO NOT REMOVE THE RATING PLATE AND LABELS FROM THE WATER HEATER UNIT.

SECTION A:

Safety Tips

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1

Safety Features

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SECTION B:

Specifications

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Dimensional Outline

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Control Panel

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Construction

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SECTION C:

Fuel Guide

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SECTION D:

Operation

Fueling

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Inspection Before Operation

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Operation

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Adjusting Water Temperature

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Flow Rate and Water Temperature

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Turning Unit Off

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Preventing Freeze Up

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Long Term Inactivity

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SECTION E:

Routine Maintenance

Inspection and Maintenance

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Inspection and Maintenance Items

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SECTION F:

Troubleshooting

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OM-122DW_Op_US  14.3.6 15:52  ページ b

Summary of Contents for Oil Miser OM-122DW

Page 1: ...A MALFUNCTION OR SHORTEN ITS SERVICE LIFE DO NOT REMOVE THE RATING PLATE AND LABELS FROM THE WATER HEATER UNIT SECTION A Safety Tips 1 Safety Features 3 SECTION B Specifications 4 Dimensional Outline...

Page 2: ...ns 6 RISK OF INJURY FROM MOVING PARTS AND ELECTRICAL SHOCK Disconnect power cord before ser vicing unit 7 This water heater is designed to be used no more than 4 922 FT 1 500 m above sea level Burner...

Page 3: ...all filters and strainers for this condition clean or replace filter elements before using the unit 12 The use of the water heater with the temperature selector knob at B HOT or COLD may propagate ba...

Page 4: ...er This will prevent the fuel supply from the exter nal tank from continuing to flow into the house 5 Fuel Strainer Special strainer catches any dirt or impurities present in the fuel before it is sen...

Page 5: ...ipe System 10 ft 3 bends or less Electrical Rating 120 Volts AC 60 Hz Ignition 120W Burning 98W Required Accessories Fuel filter Flue pipe installation kit Part 20476440 or Chimney installation adapte...

Page 6: ...7 1 2 191mm 4 3 4 119mm 8 1 2 215mm 27 3 4 705mm 3 9 16 91mm 23 585mm 12 5 8 320mm Drain Outlet NPT 1 2 Male Fuel Line Front Panel Water Supply Inlet NPT 3 4 Male Hot water Supply Outlet NPT 3 4 Male...

Page 7: ...ump Ignition Transformer Fusible Link Valve Air Pressure Switch Inteke Air Duct Burner Heat Exchanger Bi Metal Switch Flame Sensor Strainer Heat Exchanger Thermistor CONSTRUCTION WIRING DIAGRAM 6 OM 1...

Page 8: ...ALWAYS Fuel free of contaminants water or cloudiness NEVER Gasoline alcohol white gas camp stove fuel or additives NEVER Yellow or sour smelling fuel How to Store It ALWAYS Store in a clean container...

Page 9: ...strainer Immediately wipe off any spilled fuel 5 Remove the trapped air thoroughly Failure to remove all the air will cause improper ignition and may extinguish the unit 6 Tighten the screw after remo...

Page 10: ...factory to about 130 F Risk of scald injury When using a shower feel the temperature of the water with your hand before getting under the water Risk of scald injury Before changing the temperature se...

Page 11: ...tinuous demand lessen the flow rate Whenever low temperature water is required the flow rate may be increased The flow rates are calculated under the conditions of standard installation and normal usa...

Page 12: ...he farthest posi tion and gradually increase the flow rate as water starts flowing continuously NOTE Since the water heater and piping system still have much air left after they are drained a flash fl...

Page 13: ...ted 3 FUEL FEED LINE INSPECTION REGULARLY Check for fuel leaks from the fuel feed line Replace it if any cracks or leaks are found 4 WATER LEAKS REGULARLY Check the heat exchanger for water leaks Alwa...

Page 14: ...ty or cont aminated the unit will not operate properly The beam receiving sur face should be wiped with a soft cloth every 6 months d To install make the protruding section at the side of the flame se...

Page 15: ...mp Fuel flow too much Fuel flow too little Fuel nozzle malfunction Improper installation of flue pipe Thermistor malfunction Hot water supply beyond capacity Dusty blower motor fan Improper installati...

Page 16: ...ntenance Instructions are furnished with each new unit unreasonable use accidents freezing alteration use of unauthorized or non standardized Toyotomi parts and accessories electrical malfunction i e...

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