VENTED HEATER SERVICE MANUAL
OM-22 (Type B, C, D)
Oil Miser 23 (Type E)
OM-22/23 ( Oil Miser)_S.M 12.8.30 11:39 AM ページ b
Page 1: ...VENTED HEATER SERVICE MANUAL OM 22 Type B C D Oil Miser 23 Type E ...
Page 2: ...rheat Protector Switch 1 29 Pressure Relief Plate 1 30 Igniter Cleaning System 2 1 Introduction 2 2 Physical Placement of Heater 2 3 Drilling Requirements 2 4 Power Requirements 2 5 Fuel Tank Requirements 2 6 Room Temperature Sensor Wiring Requirements 2 7 Building Codes 2 8 Unpacking 2 9 Heater Installation 2 10 Typical Fuel Lifter Pump Installations 2 11 Fuel Tank Installation 2 12 For High Alti...
Page 3: ...n 5 2 Cleaning the Heat Exchanger and Burner 5 3 Removal of Water Deposits and Contaminants from Fuel Sump and Fuel Lines 5 4 Cleaning the Fuel Filter or Water Block Filter 5 5 Error Message 6 1 Electrical System 6 2 Schematic Wiring Diagram 6 3 Resistor Capacitor Value 6 4 Control Circuit Board Time Chart 6 5 Trouble Shooting Guide 6 6 Parts Description Page 22 25 Page 26 28 Page 29 45 Maintenanc...
Page 4: ...ter shuts down and goes through a post purge mode for approx 3 minutes 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 and OFF cycle to maintain the desired temperature setting The OM 22 23 is composed of the following A drip tray A cabinet A forced flue venting system A combustion system An...
Page 5: ...ir fuel mixture to start the combustion process The forced flue venting system channels air to and from the heater Outside air is drawn into the heater by the combustion blower through the flue pipe and is blown into the burner It then combines with the vaporized fuel and ignites As the heated air passes through the heat exchanger a room air circulation fan blows air past the heat exchanger and ou...
Page 6: ...nstant level valve through an inlet at the bottom As the level of fuel rises it passes through a fuel inlet strainer which removes most particles and foreign matter from the fuel and then it flows up through an open inlet valve and enters the tank See Fig 1 2 The fuel pump is mounted on top of the fuel sump The pump assembly consists of the pump solenoid and the control circuit All electronic diag...
Page 7: ... sensor which is capable of sensing room temperature within range of 50 F 10 C to 90 F 32 C can be wall mounted Approx 8 feet 2 5 m of wire is supplied with the sensor to facilitate wall mounting is a favorable location You can also use radio wire of speaker wire to extend the mounting location up to 20 feet 6m Figure 1 2 FUEL SUMP FUEL CONSTANT LEVEL VALVE Part 20478534 1 22 CONTROL CIRCUIT BOARD...
Page 8: ...nd 195 F 90 C the overheat protector switch also called a high limit switch will open to shut off the heater Error code EE12 will be displayed on the digital indicator at this time The overheat protector switch will automatically reset after the heater has cooled down Once the heater has cooled to 150 F 65 C the system can be restarted manually as follows 1 Press ON OFF switch to OFF 2 Allow heate...
Page 9: ...SERVICE MANUAL 6 L A S E R H E A T I N G S Y S T E M S Description Section 1 Model OM 22 23 Figure 1 3 CONSTRUCTION ...
Page 10: ...welling wall interior or exterior The hole must be pitched downward toward the outside at an approx angle of 3 degrees The appropriate wall area in which hole will be drilled must contain no internal obstacles such as piping wiring air ducts or studs RECOMMENDED TOOL KIT FOR SERVICE TECHNICIANS 1 2 Phillips Head Screwdriver 2 Steel Tape Measure 3 Felt Tip Pen or Pencil 4 Caulking Material exterior...
Page 11: ...rly A Remove or cut the two plastic straps that hold the shipping carton together B Lift off the carton top C Remove the template and the Owner s Manual from the shipping carton NOTE The dealer should complete the registration card at time of customer purchase and return it to TOYOTOMI U S A INC as soon as possible D Remove the flue pipe kit from shipping carton E Remove the shipping carton F Remo...
Page 12: ... 1 5 ft Not less than 8 in Not less than 2 ft Combustible object 45 Flue pipe Be sure this clearance will be maintained after snowfalls etc More than 1 ft More than 1 ft More than 5 ft More than 2 ft More than 4 inches OVERHEAD CLEARANCE FOR FLUE PIPE FRONTAL AND SIDE CLEARANCES FOR FLUE PIPE HEATER CLEARANCE Noncombustible object Figure 2 1 HEATER FLUE PIPE CLEARANCE ...
Page 13: ...AL 10 L A S E R H E A T I N G S Y S T E M S Installation Section 2 Wind break Strong wind Not less than 1 5 ft 45 cm Not less than 1 5 ft 45 cm IMPORTANT In open areas with strong wind a wind break may be necessary ...
Page 14: ...t install flue pipe where it will be exposed to heavy snow collected leaves or strong drafts See Figure 2 2 Do not install the flue pipe down from the heater Do not install the flue pipe into a chimney NOTE After using the installation template as a guide for drilling the flue pipe hole the Laser flue pipe can be normally installed according to the illustration procedure in the Owner s Manual If t...
Page 15: ... is more than 8 ft 2 5 m higher than fuel inlet to heater Limit 2 5 LBS SQ in MAX Fuel lifter pump location example Fuel tank FUEL LIFTER PUMP FUEL LIFTER PUMP FUEL LIFTER PUMP GRAVITY FUEL LIFTER PUMP Can be located behind the heater Figure 2 4 Fuel tank Fuel lifter pump location example NOTE Pressure reducing valve required if lifter is more than 8 ft 2 5 m higher than fuel inlet to heater Limit...
Page 16: ... floor under the heater This insures that inlet fuel pressure will not be excessive The horizontal length of piping should not exceed 100 feel 30 m and should be free of sharp bends or obstructions Piping should include no inverse U type bends to avoid air locks which could block the fuel supply A water block filter recommended for use on the fuel line near tank and a shutoff valve should installe...
Page 17: ...in minimum Figure 2 5 FUEL LINE CONNECTION The heater is designed to be used no more than 3000 FT 900 m above sea level For between 3000 FT to 5000 FT 900 m to 1500 m use the following proedure should be used Pull jumper connector out of terminal board CN1 and insert the jumper connector into terminal board CN2 See Fig 2 6 2 12 FOR HIGH ALTITUDE USE Figure 2 6 MAIN CIRCUIT BOARD HIGH ALTITUDE USE ...
Page 18: ...F The energy from the combustion process is released in the form of heat and vaporized water Normally heating systems discharge water from combustion to the atmosphere without condensing it The 90 efficiency rating means that assuming the water cannot be condensed 90 of the heat produced by the combustion process is recovered Assuming the water can be condensed the efficiency is 83 NOTE Actual eff...
Page 19: ...changed 13 AM lamp 14 PM lamp Lit Digtal indicator shows current time Flashing Current time can be changed Figure 3 1 CONTROL PANEL 3 3 OPERATING CONTROLS AND INDICATORS The following operating controls are used to run the heater and you monitor its preformance by indicator lamps 1st TIMER 2nd TIMER POWER SAVER UP HOUR DOWN MIN ON POWER OFF POWER SAVER 2nd TIMER 1st TIMER TEMP SET ROOM CLOCK TIMER...
Page 20: ...tion reveals any system deficiencies correct the problems before operating the heater STEP1 Open the Valve s Open the valve s for the external fuel tank and fusible link valve of the heater STEP2 Start the Fuel Flow Gently press the red reset button one time for a period of one second in order to release the float of the fuel sump NOTE Resetting the fuel sump is necessary only if the heater is bei...
Page 21: ...on temperature selector is just for your reference The figures on the digital indicator and on the scale may not match exactly this is normal A Press UP or DOWN button Temperature lamp will start to flash NOTE UP or DOWN button will change the tem perature every 2 F B Press UP or DOWN button as required Room temperature can be set from 50 F to 90 F Initial setting 70 F NOTE Desired temperature set...
Page 22: ...ect time is indicated Clock indication is in 24 hour military time Example 19 10 7 10 PM 2 Press 1st Timer button Use the up and down arrows to set the time at which you want the room to return to normal temperature This would be 16 00 to have the room start heating up at 4 pm You have ten seconds from the time you push the button to enter this setting 3 After ten seconds the display will change t...
Page 23: ...2 Medium burning mode P3 High burning mode Then change the desired burning mode manually pressing either UP HOUR or DOWN MIN button UP HOUR button changes burning mode to higher DOWN MIN button changes burning mode to lower STEP 3 To clear the manual function press both the UP HOUR and DOWN MIN buttons at the same time for more than three 3 seconds until setting and room temperature display will b...
Page 24: ...STEP 7 Replace Front Panel Assembly STEP 8 Reconnect Laser Heater Power Plug to the Electrical Outlet STEP 9 Switch ON Heater STEP 10 Reprogram STEP 11 Re set the Timer Section 3 WARNING Before proceeding to clean heater be sure that the heater interior is cool enough to touch With a clean lint free damp rag or other appropriate cleaning material wipe all dust dirt and debris from exterior of cabi...
Page 25: ...heck the flue pipe joint to make sure connection is firm Use a va cuum cleaner to remove any dust or pet hair Also make sure that the top flue pipe will not be covered by any obstacles Vacuum filter Wipe off fan blades Refer to paragraph 4 5 Fuel filter or water block filter on the fuel line is recommended If fuel contaminated see corrective maintenance procedure paragraph 4 7 3 8 OD copper tubing...
Page 26: ...ng D Replace insulating cloth covers 4 3 INSPECT INTAKE EXHAUST AIR LINES ACTIVITY MATERIAL REMARKS Inspect the burner ring and the flame sensor at least every year Clean the combustion chamber and the burner assembly at least every year Clean the igniter Check air line and blower motor assembly at least every year Check for carbon build up on or inside fuel nozzle every year Clean all carbon depo...
Page 27: ...strainer cover and remove NOTE To catch the fuel which will drain set the oil catch or the pasteboard below the cover with a small container under it B Carefully remove the strainer gasket which is located behind the strainer cover STEP 2 Inspection and Cleaning A Pull the fuel strainer out of the fuel sump B If the strainer is dirty but undamaged rinse the fuel strainer in fresh clean kerosene to...
Page 28: ...If a fuel lifter pump is part of the fueling system examine and clean the unit s filter as well as the strainer located in the fuel sump When it has been determined that water or some other contaminant has infiltrated the fuel the following procedure should be used STEP 1 Remove Contamination A Close the fuel valve of the tank and the fusible link valve on the heater B Drain the contaminants from ...
Page 29: ... remove the gaskets because they are easy to break 1 Remove front panel assembly 2 Remove top plate 3 Remove top heat shield 4 Remove heat exchanger 5 Remove heat shield 6 Remove flame rod sensor 7 Turn burner ring counter clockwise to remove Burner ring is secured on three burner side pins If burner ring does not turn pull it up slightly to loosen spring clips 8 Use wire brush to clean inside of ...
Page 30: ... are clear reconnect the fuel pipe open all valves and turn the ON OFF switch to ON Proceed with a test run NOTE A water block fuel filter is recommended on the fuel line from the tank A water block filter is recommended for installation in the fuel line to trap condensation The water block filter should be checked for condensation every 2 to 3 weeks This is especially important in the autumn and ...
Page 31: ...ner Refer to 6 5 Trouble Shooting Guide Refer to 6 5 Trouble Shooting Guide Refer to 6 5 Trouble Shooting Guide Push reset button on the fuel sump located on right inside once Check fuel gauge on fuel tank refuel Clean circulation fan cover remove any obstructions Refer to 6 5 Trouble Shooting Guide Refer to 6 5 Trouble Shooting Guide Refer to 6 5 Trouble Shooting Guide Refer to 6 5 Trouble Shooti...
Page 32: ...ER SAVER 2nd TIMER 1st TIMER TEMP SET ROOM CLOCK TIMER OM 22 1st TIMER 2nd TIMER POWER SAVER UP HOUR DOWN MIN ON POWER OFF POWER SAVER 2nd TIMER 1st TIMER TEMP SET ROOM AM PM OM 22 1st TIMER 2nd TIMER POWER SAVER UP HOUR DOWN MIN ON POWER OFF POWER SAVER 2nd TIMER 1st TIMER TEMP SET ROOM AM PM Oil Miser 23 Type E OM22 Type C D OM22 Type B A3 Page 12 8 30 11 40 AM ページ 29 ...
Page 33: ...L A S E R H E A T I N G S Y S T E M S Trouble Shooting Section 6 SERVICE MANUAL 30 6 2 SCHMATIC WIRING DIAGRAM A3 Page 12 8 30 11 40 AM ページ 30 ...
Page 34: ...ary Side connector K Secondary Side YL YL BL BL DC 161V AC 120V AC 120V AC 140V AC 14V AC 118V AC 101V AC 83V AC 102V AC 93V AC 80V DC 5V DC 2 5V OM 22 23 Fuel Pump Igniter Trans former Circulation Fan Motor Combustion Blower Motor Combustion Blower Motor Revolution Sensor CN 12 OR to BL A on PCB G on PCB K on PCB YL to YL BL to BL C on PCB Motor connected E on PCB Motor connected RD to BL WH S to...
Page 35: ...µF 250V 10µF 25V 0 022µF 50V 0 015µF 400V 3300µF 25V 0 1µF 50V 100µF 10V 0 1µF 50V 1µF 50V 0 68µF 5 5V 0 1µF 50V 4 7µF 50V 0 1µF 50V 0 01µF 50V 0 022µF 50V 0 022µF 50V 0 022µF 50V 0 015µF 250V 0 047µF 50V 0 022µF 50V 100µF 10V 0 022µF 50V 0 022µF 50V 0 022µF 50V 0 1µF 50V 0 001µF 50V 0 001µF 50V 22PF 50V 22PF 50V 100µF 10V 0 1µF 50V 0 022µF 50V 0 022µF 50V 0 022µF 50V 0 022µF 50V 0 022µF 50V 0 022...
Page 36: ...IMER LAMP PWR SAVER LAMP TIMER 1 LAMP TEMP LAMP CLOCK LAMP TIMER LAMP DIGITAL DISP COLON ON 5 1 2 3 4 T7 T1 L1 H M M1 M1 M2 H1 H M L M1 H M H M L M M2 H M L T5 C A ON B C A ON T6 T22 T10 T10 M L1 H M1 T2 T3 T4 T8 T8 T8 T11 T1 T2 T3 T12 T4 C A A CLOCK ROOM TEMP SET TEMP 1 RT ST 2 RT ST 2 F 3 RT ST 4 F 4 RT ST 5 RT ST 2 F BLINKING FREQUENCY A 2Hz B 0 5Hz C 1Hz SET TEMP ROOM TEMP Fig 1 NORMAL OPERATI...
Page 37: ...PWR SAVER LAMP TIMER 1 LAMP TEMP LAMP CLOCK LAMP TIMER LAMP DIGITAL DISP COLON ON 5 1 23 6 4 T7 T1 L1 H M M1 M1 M2 H1 H M L M1 H M H M L M M2 H M L T5 C A ON B C A ON T6 T22 T10 T10 M L1 H M1 T2 T3 T4 T8 T8 T8 T11 T1 T2 T3 T12 T4 C A A CLOCK ROOM TEMP SET TEMP 1 RT ST 2 RT ST 2 F 3 RT ST 4 F 4 RT ST 5 RT ST 2 F 6 RT ST 10 F BLINKING FREQUENCY A 2Hz B 0 5Hz C 1Hz SET TEMP ROOM TEMP Fig 2 POWER SAVE...
Page 38: ...OWER LAMP TIMER LAMP PWR SAVER LAMP TIMER 1 LAMP TEMP LAMP CLOCK LAMP TIMER LAMP DIGITAL DISP COLON ON 5 5 T1 T2 T3 T12 T11 L1 H M M1 M H M H M C A ON B T11 T13 C C A C CLOCK CLOCK CLOCK ROOM TEMP SET TEMP 1 RT ST 2 RT ST 2 F 3 RT ST 4 F 4 RT ST 5 RT ST 2 F BLINKING FREQUENCY A 2Hz B 0 5Hz C 1Hz SET TEMP ROOM TEMP SET TEMP ROOM TEMP E E 2 E E 6 Fig 3 IGNITION FAILURE MISS FLAME OFF ON OFF TIME CHA...
Page 39: ...IMER LAMP PWR SAVER LAMP TIMER 1 LAMP TEMP LAMP CLOCK LAMP TIMER LAMP DIGITAL DISP COLON ON 5 5 T1 T2 T14 L1 H H H M H H L1 H M M1 H M2 M1 H1 H C ON A C T1 T2 T3 T4 T8 T7 C C C ON C C A C A CLOCK CLOCK CLOCK ROOM TEMP SET TEMP 1 RT ST 2 RT ST 2 F 3 RT ST 4 F 4 RT ST 5 RT ST 2 F BLINKING FREQUENCY A 2Hz B 0 5Hz C 1Hz TEMP SET TEMP ROOM TEMP E E 8 Fig 4 TIME CHART OFF ON ON OFF MOTOR LOCK DUMMY FLAM...
Page 40: ... FAN MOTOR BUZZER POWER LAMP TIMER LAMP PWR SAVER LAMP TIMER 1 LAMP TEMP LAMP CLOCK LAMP TIMER LAMP DIGITAL DISP COLON 5 T11 H M H M B ON C TEMP CLOCK ROOM TEMP SET TEMP 1 RT ST 2 RT ST 2 F 3 RT ST 4 F 4 RT ST 5 RT ST 2 F BLINKING FREQUENCY A 2Hz B 0 5Hz C 1Hz E E 12 Fig 5 TIME CHART ON ON OFF OFF 5 T11 H M H M B ON C TEMP CLOCK E E 13 ON ON OFF OFF LIMIT CONTROL BURNER THERMISTOR 6 4 CONTROL CIRC...
Page 41: ...7 T 8 T 9 T 10 T 11 T 12 T 13 T 14 BLOWER MOTOR START TIMING PRE HEAT TIMING RT 59 F 32 F RT 59 F RT 32 F FUEL PUMP START TIMING BLOWER MOTOR DELAY TIMING 1 FAN MOTOR START TIMING FAN MOTOR HIGH SPEED TIMING PRE COMBUSTION TIMING BLOWER MOTOR DELAY TIMING 2 FUEL PUMP DELAY TIMING FAN MOTOR DELAY TIMING POST PURGE TIMING MISS IGNITION TIMING MISS FLAME TIMING BLOWER MOTOR LOCK TIMING 6 4 CONTROL CI...
Page 42: ...rrect wiring Incorrect wiring for room thermistor Heater does not work at room temp over 95 F 35 C Room temp is too high Yes No Disconnect or incorrect wiring for transformer Yes No Yes No Check transformer Nomal Change fuse and plug in power cord Melted Check fuse Room temp exceeds set temp No Yes No Room temp is over 95 F Yes Yes Room temp indicates HI Yes Yes Digital indicator lamp lit Does not...
Page 43: ...nd correct wiring Disconnected or incorrect wiring Check and clean fuel nozzle Clogged fuel nozzle Clean fuel nozle Fuel nozzle is clogged Check or replace fuel pump Fuel pump malfunction Correct or replace wires Wiring failure Check or replace main circuit board Main circuit board malfunction Check or replace main circuit board Main circuit board malfunction Water gathering in fuel tank Check or ...
Page 44: ...fed because of surface tension of water Check and correct wiring Disconnected or incorrect wiring Check and clean fuel nozzle Clogged fuel nozzle Clean fuel nozle Fuel nozzle is clogged Check or replace fuel pump Fuel pump malfunction Correct or replace wires Wiring failure Check or replace main circuit board Main circuit board malfunction Water gathering in fuel tank Check or replace fuel pump Fu...
Page 45: ...ve fuel in the burner Heater won t re start by the power switch Unplug the heater and wait for approx 30 minutes or short the circuit between JX11 and OV to reset the CPU Ignition failure occured three times consecutively with EE 2 error code Fuel may accumulate in the bumer Correct or replace wires Wiring failure Yes No Yes No Yes No Ia window curtain too close to the rear of unit The overheat pr...
Page 46: ...laced hori zontally Room temp is below 14 F 10 C Room temp indicates LO Yellow high flame whistling noise or smoke produced when set HIGH Does blower motor work properly Check out side end of flue pipe for flow of air and exhaust Normal Abnormal Yes No Burner ring sit properly in the burner Check for obstructions such as wasps nests in exhaust or air supply piping All Temp Clock Timer lamps flashi...
Page 47: ... 6 6 PARTS DESCRIPTION 62 10 58 58 62 9 50 3 4 5 15 62 37 6 46 49 68 62 47 49 63 48 62 8 62 11 27 34 60 26 28 62 12 61 7 55 53 52 69 51 52 56 54 54 45 13 14 43 44 40 38 39 42 41 57 72 71 70 65 66 19 32 60 33 62 62 22 23 59 25 31 30 62 29 62 62 24 67 20 21 1 36 35 64 62 16 17 18 2 62 ...
Page 48: ...binet assembly Rear guard Rear guard top Circulation air filter Drip tray Leveler fuel pipe Fusible link valve Air joint gasket Relief spring Pressure relief plate Relief gasket Heat exchanger Burner ring Heat exchanger gasket Burner assembly Burner gasket Primary flame rod Burner thermistor Igniter Igniter gasket 17185580 Igniter cover Fuel nozzle Outside nozzle gasket Fuel nozzle gasket Window g...
Page 49: ...Printed in Japan TOYOTOMI U S A INC P O BOX176 Brookfield CT 06804 0176 www toyotomiusa com Rev 07 12 Part B0100031 ...
