Toyotomi OM-22 Service Manual
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Toyotomi OM-22 Service Manual

Vented heater
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VENTED HEATER SERVICE MANUAL
OM-22 (Type B, C, D)
Oil Miser 23 (Type E)

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Summary of Contents for Toyotomi OM-22

  • Page 1 VENTED HEATER SERVICE MANUAL OM-22 (Type B, C, D) Oil Miser 23 (Type E)

  • Page 2: Table Of Contents

    L A S E R H E A T I N G S Y S T E M S Table of Contents Section 1 Description Page 1-6 1- 1 Introduction 1-16 Fuel Delivery System 1- 2 Physical Specifications 1-17 External Fuel Tank 1- 3 Description of Functions 1-18 Fusible Link Valve 1- 4 Description...
  • Page 3 L A S E R H E A T I N G S Y S T E M S Table of Contents Section 4 Maintenance Page 22-25 4- 1 Introduction 4- 5 Clean Fuel Inlet Strainer 4- 2 Routine Maintenance 4- 6 Replacement of Fuses 4- 3 Inspect Intake/Exhaust Air Lines 4- 7 Fuel Contamination...

  • Page 4: Introduction

    Turn the ON/OFF switch to "ON" again to restart. OM-22/23 is equipped with a programmable timer which allows for fully automatic operation 24 hours a day. The heater will rum at four stages "HIGH", "MEDIUM", "LOW"...

  • Page 5: Combustion Chamber

    The exhaust gas is expelled through the flue pipe. 1-10 FLAME ROD SENSOR The OM-22 blower motor has a 3-speed. A magnetic The flame rod sensor checks the condition of the flame sensor insures proper fan speeds for each burning mode.

  • Page 6: Air Circulation Fan

    The OM-22 circulation an open inlet valve and enters the tank. See Fig. 1-2. fan motor has three speeds. The circulation fan will keep running for 180 seconds after the heater shuts down.
  • Page 7 L A S E R H E A T I N G S Y S T E M S Section 1 Description 1-22 CONTROL CIRCUIT BOARD 1-23 ROOM TEMPERATURE SENSOR The control circuit board provides safety timings, The room temperature sensor, which is capable of controls relays and provides clock and thermostat sensing room temperature within range of 50°F (10°C) functions for the Laser Heater.
  • Page 8 L A S E R H E A T I N G S Y S T E M S Section 1 Description 1-24 SAFETY MECHANISMS 1-28 OVERHEAT PROTECTOR SWITCH Several safety mechanisms have been built into the Overheat protector switch is rated at 195°F (90°C). Laser Heating System.
  • Page 9 L A S E R H E A T I N G S Y S T E M S Section 1 Description Model OM-22/23 Figure 1-3 CONSTRUCTION S E R V I C E M A N U A L...

  • Page 10: Introduction

    Remove all combustibles from the heating area. OM-22 model is strictly an externally fueled system, is fully vented and will need the installation of an external Unless building or fire codes dictate otherwise, the Laser fuel storage tank.

  • Page 11: Power Requirements

    55 gallon (200R) drums to 275 gallon (1000R) tanks. to TOYOTOMI U.S.A., INC. as soon as When using large tanks a pressure regulator with a max. possible.
  • Page 12 L A S E R H E A T I N G S Y S T E M S Section 2 Installation HEATER CLEARANCE More than 2 ft. More than 4 inches More than 1 ft. More than 1 ft. More than 5 ft.
  • Page 13 L A S E R H E A T I N G S Y S T E M S Section 2 Installation IMPORTANT: In open areas with strong wind, a wind break may be necessary. Strong wind Not less than 1.5 ft.
  • Page 14 L A S E R H E A T I N G S Y S T E M S Section 2 Installation 2-9 HEATER INSTALLATION In choosing a location for your Laser Vented Heater, the following safety tips must be considered. •...
  • Page 15 L A S E R H E A T I N G S Y S T E M S Section 2 Installation 2-10 TYPICAL FUEL LIFTER PUMP For more detailed information, see a fuel lifter pump manual. NOTE: Pressure reducing valve required if lifter is more than 8 ft.
  • Page 16 L A S E R H E A T I N G S Y S T E M S Section 2 Installation • The horizontal length of piping should not 2-11 FUEL TANK INSTALLATION exceed 100 feel (30 m) and should be free of sharp bends or obstructions.
  • Page 17 L A S E R H E A T I N G S Y S T E M S Section 2 Installation Outdoor fuel tank Tank vent Fuel filter 81/2ft.maximum 16in.minimum Fusible link valve Shut-off valve Loop 3/8in.OD copper tubing Figure 2-5 FUEL LINE CONNECTION 2-12 FOR HIGH ALTITUDE USE The heater is designed to be used no more than 3000...

  • Page 18: Introduction

    The energy from the combustion process is 3-1 INTRODUCTION released in the form of heat and vaporized water. The OM-22/23 is an easy-to-operate vented heater. Normally, heating systems discharge water from Routine operation features high BTU output, automatic combustion to the atmosphere without condensing adjustment of room temperature, low fuel and power it.

  • Page 19: Operation

    TEMP TEMP 1st TIMER POWER SAVER 1st TIMER POWER SAVER CLOCK 2nd TIMER 2nd TIMER TIMER OM-22 OM-22 ROOM ROOM 10. Temperature lamp 9. Digital indicator 6. Power saver lamp 10. Temperature lamp 9. Digital indicator 6. Power saver lamp 11.
  • Page 20 L A S E R H E A T I N G S Y S T E M S Section 3 Operation 3-4 PRE-OPERATION CHECK LIST 3-5 BERORE OPERATION After heater installation, but prior to the Laser Heater STEP1: Open the Valve(s) start-up, inspect the system for operational readiness.
  • Page 21 L A S E R H E A T I N G S Y S T E M S Section 3 Operation NOTE: 3-6 OPERATION Desired temperature setting will be displayed on the digital indicator when you set the room Operation of the heater is under the direct control of the temperature.

  • Page 22: Timer Operation

    It is not automatic. There are two timer buttons on 3. After ten seconds the display will change to Temp. The the OM-22/23, 1st timer and 2nd timer. This allows for Temp side of the display will show the default 60 two different temperature drop backs per 24 hour period.

  • Page 23: Room Temperature Sensor

    FOR TESTING PURPOSES 3-13 RECOVERY FROM OVERHEAT CONDITION The OM-22/23 can also be kept burning at designated burning mode (HIGH, MEDIUM or LOW) manually, regardless of room temperature. This feature will be The OM-22/23 is protected against damage resulting from used mainly floor the purpose of testing the heater.
  • Page 24 L A S E R H E A T I N G S Y S T E M S Section 3 Operation STEP 3: Unplug Heater Disconnect heater plug from outlet. STEP 4: Over heating is usually caused by objects that impede free air circulation.

  • Page 25: Routine Maintenance

    L A S E R H E A T I N G S Y S T E M S Section 4 Maintenance At the time of the demonstration or installation, heater 4-1 INTRODUCTlON maintenance should be discussed with the user; Heater maintenance is divided into two classifications;...

  • Page 26: Inspect Intake/Exhaust Air Lines

    L A S E R H E A T I N G S Y S T E M S Section 4 Maintenance ACTIVITY MATERIAL REMARKS Inspect the burner ring, and the Clean all carbon deposits. Replace if flame sensor. excessively warped or cracked. (at least every year) If any gaskets are torn when NOTE:...

  • Page 27: Verify Igniter Operation

    L A S E R H E A T I N G S Y S T E M S Section 4 Maintenance NOTE: 4-4 VERIFY IGNITER OPERATION Power should be “OFF” during the performance of this procedure. Visually inspect igniter operation. STEP 1: Disassembly WARNING: Heater is operational during this...

  • Page 28: Replacement Of Fuses

    L A S E R H E A T I N G S Y S T E M S Section 4 Maintenance STEP 3: Reassembly 4-7 FUEL CONTAMINATION A. Push the new cleaned fuel strainer back into the Fuel contamination is often difficult to diagnose, even though it will adversely affect the heater operation and bottom of the fuel sump.

  • Page 29: Servicing

    5-1 INTRODUCTION 5. Remove heat shield. 6. Remove flame rod sensor. Servicing is required when the OM-22/23 is running at 7. Turn burner ring counter-clockwise to remove. Burner proper efficiency. This section covers the possible ring is secured on three burner side pins. If burner...

  • Page 30: Cleaning The Fuel Filter Or Water

    5-3 REMOVAL OF WATER DEPOSITS AND CONTAMINANTS FROM FUEL SUMP AND FUEL LINES Unplug the OM-22/23 from the power supply before proceeding. 1. If using an external tank on the heater, shut off the fusible link valve and the shut-off safety valve. Also, shut off the valve of the external tank.

  • Page 31: Error Message

    L A S E R H E A T I N G S Y S T E M S Section 5 Servicing 5-5 ERROR MESSAGE ERROR PROBLEM CAUSE SOLUTION CODE POWER LAMP Disconnected power plug. Plug into 120V AC outlet. FAILS TO LIGHT Circuit board, fuse or transformer Refer to 6-5 Trouble Shooting Guide.
  • Page 32 6-1 ELECTRICAL SYSTEM POWER 1st TIMER 2nd TIMER POWER SAVER UP/HOUR DOWN/MIN TEMP 1st TIMER POWER SAVER CLOCK 2nd TIMER TIMER OM-22 ROOM OM22 (Type B) POWER 1st TIMER 2nd TIMER POWER SAVER UP/HOUR DOWN/MIN TEMP 1st TIMER POWER SAVER 2nd TIMER...
  • Page 33 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-2 SCHMATIC WIRING DIAGRAM S E R V I C E M A N U A L...

  • Page 34: Trouble Shooting

    H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-3 RESISTOR/CAPACITOR VALUE Resistor Values COMPONENT OM-22/23 Igniter (connector G) at cold condition(73°F (23°C)) Primary Side (connector K) Transformer YL & YL Secondary Side BL & BL...
  • Page 35 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-3 RESISTOR/CAPACITOR VALUE Resistor Value (Ω) Capacitor Value (µF) SYMBOL VALUE/UL No. SYMBOL VALUE/UL No. SYMBOL VALUE/UL No. 47KΩ...

  • Page 36: Control Circuit Board Time Chart

    L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-4 CONTROL CIRCUIT BOARD TIME CHART TIME CHART Fig. 1 NORMAL OPERATION POWER SW PWR. SAVE SW HOUR/UP SW MIN/DOWN SW TIMER 1 SW...
  • Page 37 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-4 CONTROL CIRCUIT BOARD TIME CHART TIME CHART Fig. 2 POWER SAVER OPERATION POWER SW PWR. SAVE SW HOUR/UP SW MIN/DOWN SW TIMER 1 SW...
  • Page 38 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-4 CONTROL CIRCUIT BOARD TIME CHART TIME CHART Fig. 3 IGNITION FAILURE MISS FLAME POWER SW PWR. SAVE SW HOUR/UP SW MIN/DOWN SW TIMER 1 SW...
  • Page 39 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-4 CONTROL CIRCUIT BOARD TIME CHART TIME CHART Fig. 4 MOTOR LOCK DUMMY FLAME POWER SW PWR. SAVE SW HOUR/UP SW MIN/DOWN SW TIMER 1 SW...
  • Page 40 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-4 CONTROL CIRCUIT BOARD TIME CHART TIME CHART Fig. 5 LIMIT CONTROL BURNER THERMISTOR POWER SW PWR. SAVE SW HOUR/UP SW MIN/DOWN SW TIMER 1 SW...
  • Page 41 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-4 CONTROL CIRCUIT BOARD TIME CHART BLOWER MOTOR START TIMING 5 sec PRE-HEAT TIMING (RT>59°F) 90 sec (32°F<RT<59°F) 120 sec (RT<32°F)

  • Page 42: Trouble Shooting Guide

    L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting GENERAL CHECKS Is power available in wall outlet? Is ON/OFF switch on? Is power plug inserted in wall outlet? Is operation mode on “MANUAL”? Has there been a power interruption? Is set temperature in “HIGH”...
  • Page 43 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-5 TROUBLE SHOOTING GUIDE FAILURE CHECK1 RESULT CHECK2 RESULT CHECK3 RESULT CHECK4 RESULT CHECK5 RESULT CAUSE SOLUTION Flame rod sensor touches burner Correct or change flame rod sensor Stops...
  • Page 44 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-5 TROUBLE SHOOTING GUIDE FAILURE CHECK1 RESULT CHECK2 RESULT CHECK3 RESULT CHECK4 RESULT CHECK5 RESULT CAUSE SOLUTION Flame rod sensor touches burner Stops Does flame...
  • Page 45 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-5 TROUBLE SHOOTING GUIDE FAILURE CHECK1 RESULT CHECK2 RESULT CHECK3 RESULT CHECK4 RESULT CHECK5 RESULT CAUSE SOLUTION Clean fan cover Ia window Yes.
  • Page 46 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-5 TROUBLE SHOOTING GUIDE FAILURE CHECK1 RESULT CHECK2 RESULT CHECK3 RESULT CHECK4 RESULT CHECK5 RESULT CAUSE SOLUTION Is a unit Does blower Yellow high...

  • Page 47: Parts Description

    L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-6 PARTS DESCRIPTION 3, 4, 5 38, 39 65, 66 S E R V I C E M A N U A L...
  • Page 48 L A S E R H E A T I N G S Y S T E M S Section 6 Trouble Shooting 6-6 PARTS DESCRIPTION REF # PART # PART NAME REF # PART # PART NAME 20479828 Front panel 20478306 High limit switch 20479860...
  • Page 49 TOYOTOMI U.S.A., INC. P.O. BOX176, Brookfield, CT 06804-0176 www.toyotomiusa.com Rev. 07/12 Part #B0100031 Printed in Japan...

This manual is also suitable for:

Om-23Om-22dOil miser 23Oil miser 23eOm-22bOm-22c

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