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M157495U 

 
 
 
 
 

 

 

 

Owner’s Manual 

Industrial Water Heater 

Instructions for Set-up, Operation, Maintenance & Storage 

 

 

Thank you for purchasing a NorthStar water heater.  Your machine is designed for long life, dependability, and the 
top performance you demand!  Take time now to read through this manual so you better understand the machine’s 
operation, maintenance and safety precautions.  Everyone who operates this machine must read and understand this 
manual.  The time you take now will prolong your machine’s life and prepare you for its safe operation.  Enjoy the 

exceptional performance of your NorthStar water heater, the industry leader! The manufacturer reserves the right to 
make improvements in design and/or changes in specifications at any time without incurring any obligation to install 
them on units previously sold. 
 

 

WARNING: SPECIAL HAZARDS 

 

Burns

: Hot spray can scald and burn skin. Hot surfaces of wand and burner, as well as hot exhaust from the burner can 

cause burns. 

 

Fire/Explosion

: Burner sparking can ignite fuel or other flammable liquids or vapors in the vicinity. Hot exhaust from burner 

can ignite combustible materials. Keep a fire extinguisher rated “ABC” nearby during operation. 

 

Electrocution

:  Improper connection of the equipment or grounding conductor can result in a risk of electrocution.   

 

CO Poisoning

: Exhaust from burner contains carbon monoxide, a poisonous gas that can cause carbon monoxide poisoning 

and possible death if inhaled. 

 

 

 

Equipment Protection Quick Facts 

Inspect Upon Delivery:

 STOP! Closely inspect to make sure no components are missing or damaged. Contact 

NorthStar Product Support to report missing or damaged parts. 

 

 

Maintenance Schedule:

 Burner fuel filter, burner coil and electrodes require periodic checking and servicing to keep 

pressure washer functioning efficiently. See “

Maintenance & Repair

” for frequency of servicing.  

 

 

 

 

 

 

 

 

 

 

 

 

 

Any Questions, Comments, Problems or Parts Orders 

Call NorthStar Product Support 1-800-270-0810 

 

ITEM NUMBER:  157495 
SERIAL NUMBER: _____________ 

Summary of Contents for 157495

Page 1: ... wand and burner as well as hot exhaust from the burner can cause burns Fire Explosion Burner sparking can ignite fuel or other flammable liquids or vapors in the vicinity Hot exhaust from burner can ignite combustible materials Keep a fire extinguisher rated ABC nearby during operation Electrocution Improper connection of the equipment or grounding conductor can result in a risk of electrocution ...

Page 2: ...Step 1 Inspect Equipment 15 Electrical 15 Burner Fuel System 15 Periodic Maintenance 15 Step 2 Check and Fill Burner Fuel Tank 15 Filling Burner Fuel Tank 15 Step 3 Select Suitable Worksite Guidelines 15 For Indoor and Outdoor Uses 16 Step 4 Oil Burner Adjustment 16 Step 5 Verify Electrical Connection 16 Grounding 16 Ground Fault Circuit Interrupter Protection 16 Extension Cord and Usage 17 Electr...

Page 3: ...0 7 Coil Descaling 21 8 Coil Desooting 21 9 Electrodes 22 10 Flow Switch 22 MOVING AND HANDLING INSTRUCTIONS 25 1 Maneuvering Your Water Heater 25 2 Lifting Your Water Heater 25 MAINTENANCE INSTRUCTIONS 25 TROUBLESHOOTING GUIDE 26 PARTS EXPLOSION 157495 REV U 27 PARTS LIST 157495 REV U 28 WIRING DIAGRAMS 29 LIMITED WARRANTY 31 CALIFORNIA PROPOSITION 65 INFORMATION 32 ...

Page 4: ...ic exhausting guidelines are met Read additional details in the Before Each Use section of this manual Personal Protection Wear safety apparel during operation including waterproof insulated gloves safety glasses with side and top protection and non slip protective footwear Some cleaning chemicals may require the use of a respirator mask as instructed on chemical label Adult control only Only trai...

Page 5: ... Rise 190 F 2GPM 190 F 3GPM 140 F 4GPM Maximum Temperature 250 F Approved Fuels 1 or 2 Diesel Kerosene Fuel Oil Fuel Capacity 4 gal Power Requirements NEMA Receptacle 5 15R Volts 115V Amps 5A Hertz 60Hz Phase single Dimensions Length 38 25 Width 27 Height 38 75 Weight dry 286 lbs Weight fueled 334 lbs Ship Weight 310 lbs ...

Page 6: ...ry The Burner may need initial adjustment for peak performance See Oil Burner Adjustment section for instructions on initial adjustment of the oil burner Tip pressure washer using handle to access burner from underneath unit 8 Fuel Filter Filter in fuel line that removes water and screens out dirt and debris from fuel 9 Exhaust Vent Provides an exit for burner exhaust gases 10 Flow Switch Water ac...

Page 7: ...sure exceeds its limits the rupture disc will open and relieve system pressure WARNING If the rupture disc ever discharges water turn the unit off and do not use the machine See a dealer or call Customer Service at 1 800 270 0810 2 Thermostat The thermostat is another safety feature that keeps the outlet water temperature below 250 F Thermostat Rupture Disc ...

Page 8: ...ever alter the manufacturer s original design or deactivate any safety device on the machine 12 Risk of exposure to dangerous chemicals Wear protective gloves when handling and cleaning with chemicals Follow the chemical manufacturer s directions Understand all safety hazards and first aid for all chemicals being used Do not pump highly abrasive fluids or use with incompatible chemicals or solvent...

Page 9: ...heater is provided with a ground fault circuit interrupter GFCI built into the plug of the power supply cord This device provides additional protection from the risk of electric shock Should replacement of the plug or cord become necessary use only identical replacement parts that include GFCI protection Extension Cords Use only 3 wire extension cords that have 3 prong grounding type plugs and 3 p...

Page 10: ...tuation which if not avoided will result in death or serious injury WARNING orange indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION yellow used with the safety alert symbol indicates a hazardous situation which if not avoided could result in minor or moderate injury CAUTION yellow without the safety alert symbol is used to address practices not r...

Page 11: ... or torch is permitted Do not add fuel when the product is operating or is still hot Do not spray flammable liquids 4 Breathing hazard Poisonous fumes from water heater can kill you Do not operate in enclosed areas unless vented by a local heating contractor 5 Read owner s manual completely Serious injury or death can result if safety instructions are not followed You must be 16 or older to operat...

Page 12: ...water heater immediately after delivery for missing parts or damage For missing or damaged components contact Product Support at 1 800 270 0810 Handle Grip Qty 2 Hardware Bag Qty 1 Wheel Qty 2 Water Heater Qty 1 Remove 2 retaining blocks ...

Page 13: ...13 Hardware Bag Owner s Manual 4X 5 16 X 75 Flange Bolt 4X 5 16 Flange Nut 2X 5 8 X 3 5 Hex Bolt 2X 5 8 Hex Nut 2X 5 8 Jam Nut ...

Page 14: ...ing and Handling section on page 16 Do not try to lift the unit by the hook on the heating coil inside the heat exchanger The heating coil is not secured to the frame To attach handles use 5 16 X 75 Flange Bolts 4x 5 16 Flange Nuts 4x 5 8 Hex Nut 5 8 Jam Nut 5 8 X 3 5 Hex Bolt To attach wheels 1 Slide 5 8 X 3 5 bolt through hub of wheel 2 Spin 5 8 Jam Nut onto bolt Do not tighten against wheel 3 S...

Page 15: ...or at least 2 minutes before removing fuel cap as a running or still hot burner is hot enough to ignite fuel After Machine Has Cooled 1 Remove burner fuel cap 2 Add fuel through the fill opening Do not overfill Allow at least 1 2 of empty space below fill neck to allow for fuel expansion 3 Replace fuel cap securely before starting burner 4 Clean up fuel spills splashes immediately If possible move...

Page 16: ...ay gun so the burner fires 2 Loosen the locking screw and close the air band until black smoke appears from the burner exhaust vent Note the position of the white arrow on the air band 3 Slowly open the air band until white smoke just starts to appear 4 Turn the air band half way back to the black smoke position previously noted Tighten the locking screw 5 Fine tune the burner air by loosening the...

Page 17: ...y type adapter with this product Extension Cord and Usage Use only 3 wire extension cords that Have 3 prong grounding type plugs and 3 pole cord connectors that accept the plug from the product Are intended for outdoor use identified by the marking Acceptable for use with outdoor appliances store indoors while not in use Have an electrical amperage rating not less than the rating of the product Us...

Page 18: ...1 Connect electrical cord to NEMA receptacle 5 15R 2 Connect outlet of your pressure washer to inlet of the water heater Your NorthStar Water Heater is equip ped with quick connect fittings as are all NorthStar pressure washers Slide the collar back on the inlet hose and push it over the outlet nipple of the pressure washer Pull on hose to assure a good connection 2a If your pressure washer does n...

Page 19: ...e high pressure water outlet Then snap the high pressure hose to the injector and submerge the suction strainer into the chemical solution 2 If your chemical injector cannot be moved to the water heater s outlet it is acceptable to run chemicals through the heating coil Only use NorthStar pressure washer chemicals or chemicals specifically formulated for pressure washers and make sure that the coi...

Page 20: ...king Description Part Number Flow Switch 797121 Inlet Hose 780127 Electrode Kit RWB5780U Fuel Pump RWB21844U Igniter RWB51771U Fuel Filter Element RCR12T Pressure Gauge MV32154 2 Maintenance Mode Before performing any maintenance on the water heater it must be placed in maintenance mode A Turn off water supply B Bleed water from system C Turn off and unplug power cord 3 Maintenance Schedule What t...

Page 21: ...t strainer when finished 8 Coil Desooting Poor grades of fuel oil or inadequate combustion air will cause heavy soot build up on the outside surface of the heating coil These deposits will insulate the coil This will restrict the air flow through the coil further aggravating the soot build up Most coils will never require desooting However to desoot a coil 1 Wear protective clothing goggles and gl...

Page 22: ...you until you can see the electrodes and fuel nozzle 4 Clean off carbon deposits that may have accumulated on the tips of the electrodes 5 Reset the spacing as shown below 10 Flow Switch Inspect and clean the flow switch as needed Mineral build up and or debris within the flow switch can occur and may affect burner operation if not periodically cleaned Mineral build up and or debris can stop the m...

Page 23: ...ow switch assembly call Northstar Product Support at 1 800 270 0810 4 Observe the Shuttle Assembly and internal portion of Body for obstructions hard water deposits and any other foreign debris Remove the foreign debris with light scraping or compressed air If no additional cleaning is required continue to Step 7 If additional cleaning is required continue to step 5 Swivel Fitting Cap Fitting Shut...

Page 24: ...e O ring on the Cap if it is damaged replace the entire flow switch assembly To order a replacement flow switch assembly call Northstar Product Support at 1 800 270 0810 If the O ring is not damaged re install the Cap onto the Body Torque the cap to 100lb in 10 On the elbow on the inlet of the coil remove any remaining thread tape sealant Re apply new thread tape sealant on the elbow Re connect th...

Page 25: ...d lifted Maintenance Instructions Winter Storage Items needed 12 piece of garden hose or equivalent funnel and RV antifreeze approximately 2 gallons 1 Attach the water heater s inlet hose to the high pressure outlet of your pressure washer 2 Attach the garden hose with funnel to your pressure washer s pump inlet see illustration 3 Pour RV antifreeze into the funnel 4 Turn your pressure washer on D...

Page 26: ...rent elevation Adjust the air band until the burner burns cleanly See Oil Burner under Installation Instructions Poor quality fuel Use Kerosene for the cleanest burn Water Not Heating Sufficiently Causes Solutions Scale build up in coil See Coil Descaling under Maintenance Instructions Coil is full of soot See Coil Desooting under Maintenance Instructions Rupture Disc Sprays Water Causes Solutions...

Page 27: ...27 Parts Explosion 157495 Rev U ...

Page 28: ...7 Fuel Tank 4 Gallon 1 27 777119 Hose Clamp 1 2 1 28 777340 1 4 NPT x 1 4 Hose Barb 3 29 17141 Hose Clamp 1 4 4 30 801490 Fuel Line 1 4 Hose Inlet 8 5 31 31976 1 4 Fuel Tank Fitting 1 32 306401 Rubber Seal Fuel Tank 1 33 777111 Large Grommet 1 34 82125 5 8 11 Hex Nut 2 35 82126 5 8 11 Hex Jam Nut 2 36 789074 Pneumatic Wheel 10 2 37 82123 5 8 11 X 3 5 Hex Bolt 2 38 305239 1 4 NPT Nipple 3 Long 1 39...

Page 29: ...29 Wiring Diagrams ...

Page 30: ...30 ...

Page 31: ...Star will not provide for replacement of complete products due to defective parts Any costs incurred due to replacement or repair of items outside of a NorthStar approved facility is the responsibility of the buyer and not covered under warranty Transportation costs to and from service center is the responsibility of the customer In addition to the normal warranty NorthStar shall warrant any norma...

Page 32: ...ernTool com WARNING This product can expose you to chemicals including gasoline engine exhaust which is known to the State of California to cause cancer and carbon monoxide which is known to the State of California to cause birth defects or other reproductive harm For more information go to www P65Warnings ca gov ...

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