Toyotomi OM-180 User Manual

4.5 (2)

Instantaneous Oil-Fired Water Heater

Operation and Maintenance Instructions

MODEL OM-180

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.

CONTENTS

SECTION A:

 

Inspection Before Operation

9

Safety Tips

1

Operation

10

Safety Features

3

Adjusting Water Temperature

10

 

 

Flow Rate and Water Temperature

11

SECTION B:

 

Turning Unit Off

11

Specifications

4

Preventing Freeze Up

11

Dimensional Outline

5

Long Term Inactivity

12

Control Panel

6

 

 

Construction

6

SECTION E:

 

Wiring Diagram ---------------------------------------------7

Routine Maintenance

 

SECTION C:

 

Inspection and Maintenance

13

Fuel Guide

8

Inspection and Maintenance Items

13

SECTION D:

 

SECTION F:

 

Operation

 

Troubleshooting

14

Fueling

9

 

 

 

 

 

 

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.

"WARNING" indicates the possibility of causing the user a fatal accident or serious injury if the water heater is incorrectly operated.

"CAUTION" indicates the possibility of causing the user injuries or material damages if the water heater is incorrectly operated.

WARNING

1.Never use any fuel other than ASTM D3699 1-K Kerosene, ASTM D396 No.1 or No.2 Fuel Oil. NEVER USE GASOLINE. Use of such fuels can result in an explosion and/or fire and cause injury.

2.Never store flammable liquids or materials such as gasoline near the unit.

3.This unit should be installed by a licensed, authorized person(s) due to the necessity of making electrical, water and fuel connections.

4.RISK OF BACKFIRE AND INDOOR AIR POLLUTION. Before operation make sure flue pipe is free of snow, icing, leaves, bird's nest or strong drafts.

5.RISK OF INDOOR AIR POLLUTION AND FIRE. Be sure the exhaust pipe is properly installed and connected. Aluminum tape may be used for sealing exhaust pipe connections.

6.RISK OF INJURY FROM MOVING PARTS AND ELECTRICAL SHOCK. Disconnect power cord before servicing unit.

7.This water heater is designed to be used no more than 4‚922 FT. (1‚500 m) above sea level. When the water heater is installed the flue pipe at altitude of higher than 1,640FT. (500m) ~ 4.922 FT. (1.500 m) above sea level or is installed the chimney at altitude of higher than 3,280FT. (1,000m) ~ 4‚922 FT. (1,500m), adjustments are needed.

Ask your local dealer.

The water heater may have a failure of combustion at a high altitude.

CAUTION

1.HOTTER WATER INCREASES THE RISK OF SCALD INJURY. Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. Before changing temperature setting make sure nobody is using a shower. High temperature setting increases the risk of scald injury. Temperature has been set at factory to about 130°F.

2.RISK OF SCALD INJURY. When using a shower, feel the temperature of the water with your hand before getting under the water.

3.RISK OF SCALD INJURY. Do not touch hot water flowing from temperature and pressure relief valve.

4.RISK OF BURN INJURY. Do not touch flue pipe top and exhaust pipe. The insulated material provided should be installed around the exhaust pipe. Due to high surface temperature, keep children away from the unit.

1

OTHER PRECAUTIONS

1.This unit is only for indoor use. Avoid its exposure to rain or moisture.

2.Do not use for drinking or cooking until the water supply has been approved by local authorities.

3.Hot water (or cold water) left in heat exchanger or piping must not used for cooking or drinking.

4.When using a large amount of hot water the temperature may change, even though the temperature setting has not been changed. Special caution must be taken if two faucets are open at the same time.

5.If the unit appears to be operating abnormally or in an emergency, turn off the unit and call an authorized service person.

6.Avoid the use of hard water. In regions where hard water is the only source, take advantage of a water softener.

7.Do not use a damaged unit. If repairs are needed, contact your dealer.

8.Keep the area around the unit, the fuel tank and the flue pipe clean and free of flammable materials.

9.If you plan to be away from your home for a long period of time, shut-off the fuel valve on the fuel tank. Press "POWER SWITCH" to "OFF" position and disconnect the power supply cord.

10.If the unit is not used for a long period of time, the fuel tank may contain water cause by condensation. Be sure to check all filters and strainers for this condition, clean or replace filter elements before using the unit.

11.The use of the water heater with the temperature selector knob at "B", "HOT", or "COLD" may propagate bacteria growth in the water. In order avoid this, turn the temperature selector knob to "VERY HOT" once a week to heat the water heater and water to a high temperature for approximately one hour.

12.Before changing the temperature setting, make sure that the water heater is not being used by any of your family at any place in the house. All family members should be aware of this "Caution."

13.Fusible Link Valve (#10005597)

¡It is most important that the valve, depending on its use, be fully opened or fully closed.

¡The top nut on the valve (below the turn handle) is sealed and should never be tightened or removed.

¡When installing fuel lines to the valve, be sure to check for fuel leakage. ¡A LEAKING VALVE SHOULD ALWAYS BE REPLACED.

14.Since the fluidity of No.2 fuel oil becomes worse at the temperature of -6°C and below, do not use in the environment that causes this condition.

Poor fluidity causes the ignition failure, going-out of flame and incomplete combustion.

2

SAFETY FEATURES

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 over heat protector automatically stops all operations if the water in the heat exchanger reaches abnormally high temperatures due to temperature thermistor malfunction. The ''WARNING'' lamp will light.

3.Heat Exchanger Bii-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 outdoos.

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 external 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

If the heat exchanger temperature becomes abnormally hot because of a malfunctioning thermostat, the burner is automatically extinguished and 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.

3

SECTION B:

SPECIFICATIONS

 

 

SPECIFICATIONS

Model:

 

OM-180

Type:

Combustion Type

Pressure Vapor

 

Flue Pipe

Forced Flue

 

Heating Supply System

Instantaneous

 

Purpose

Hot Water Supply, Heating

Ignition:

 

High Voltage Discharge Spark

Fuel

 

ASTM D3699 1-K Kerosene, ASTM D396 No.1 or No.2 Fuel Oil

Efficiency:

 

90% (1)

Hot Water Input:

148‚000 BTU/h

Fuel Consumption:

1.05 gal/h

Capacity of Heat Exchanger:

5.10 gal

Fuel system:

 

External tank (2)

Dimensions (W x H x D):

12-5/8'' x 27-3/4'' x 22-1/2''

Weight:

 

81 lbs. Empty

Vent Pipe Hole:

4-3/4 diameter

Maximum Length of Vent Pipe System:

10 ft., 3 bents or less

Electrical Rating:

120 Volts AC, 60 Hz

 

 

Ignition - 120W

 

 

Burning - 98W

Required Accessories:

Fuel filter, Temp & pressure relief valve

Safety Device:

Ignition safety device,

 

 

High Limit Thermistor,

 

 

Heat exchanger bi-metal switch,

 

 

Temperature fuse, Fusible link valve

Exhaust Air Temperature:

less than 500°F

Nozzle:

Quantity of Vapor

0.85 GPH

 

Spraying Angle

60°

 

Spray Pattern

Delavan Type XA

Temperature Fuse:

282°F

Electric Current Fuse:

5 A, 7 A

(1)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.

(2)External tank to be purchased from local suppliers.

4

Toyotomi OM-180 User Manual

Exhaust Outlet φ2-3/4"(φ70mm)

DIMENSIONAL OUTLINE

 

6-1/4”

160

22-1/2”570

8-1/2”

215

 

 

3/16"

 

 

(5mm)

 

 

12-5/8"

 

 

(320mm)

Air Intake Inlet

φ2-3/4”(φ70

 

 

Access Cover

 

 

 

 

Hot Water Outlet or

 

 

 

T&P Relief Valve

 

 

 

(NPT 1-1/4"Male)

 

1/4"(488mm)-19

3/4"(705mm)-27

Front Panel

 

 

 

 

 

 

Cold Water Inlet or

 

 

 

Drain Outlet

 

 

 

(NPT 1-1/4"Male)

4"

01mm)(1

 

 

 

 

Fuel Line

 

 

 

Junction Box

 

5

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