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OPERATING AT HIGH TEMPERATURE

CAUTION:

Risk of scald injury. Before changing temperature setting make sure that the water heater is not
being used by any of your family at any place in the house.

NOTE:

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Seasonal change of water temperature from the main water source results in different hot

water temperature supplied. Use hot water supply faucet to control hot water temperature,
or readjust temperature setting.

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The hot-cold mixing faucet is recommended to ensure safe and comfortable use of the water

heater. Choose a mixing faucet which can provide a comfortable water temperature with less
temperature fluctuation.

¡

After installing the mixing faucet, set the temperature selector knob at the position of "VERY

HOT" and then gradually adjust the water temperature by adding cold water to your prefer-
able level. Sufficient care must be taken not to misoperate this  adjustment, which may result
in scalding your hands.

FLOW RATE AND WATER TEMPERATURE

NOTE:

Whenever high temperature water is required for continuous 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 usage so
that they will vary according to installation, usage and temperature.

TURNING UNIT OFF

1.

Press "POWER SWITCH" to ''OFF'' position.  All lamps will go out.

2.

Close the fuel tank valve.

PREVENTING FREEZE UP

In order to prevent any kind of damage or leaks caused by freezing, keep the pipes heated at all times, as
specified below.

CAUTION:

In order to prevent the water heater from freezing or develop a leak, regardless of being used in
a cold region or in a warm or hot region, the water supply piping, hot water supply piping,
drain pipe, valves, expansion tank, and temperature & pressure relief valve are to be protected
with sufficient insulation materials (by wrapping with heat insulation or by equipping an freeze
prevention heater).

10

SUMMER

SPRING & FALL

WINTER

SEASON

INCOMING

WATER TEMP

HOT WATER

TEMP

FLOW RATE

80°F
60°F
40°F

120°F (40°F RISE)
120°F (60°F RISE)
120°F (80°F RISE)

6.1 GPM
4.0 GPM
3.0 GPM

ON/OFF

POWER

THERMOSTAT

B

HOT

A

COLD

VERY HOT

130

°

   F

WARNING

BURNER

OPERATION

OM-122DW_Op_US  14.3.6 15:52  ページ 10

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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