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Page 19

OMNI by EconoHeat

Symptom 

Cause 

Remedy 

8.  Proper draft setting 

cannot be achieved 

  Negative dr

 

t in building 

or exhaust

ans present 

  Excessive ash buildup 

  May need to install power vent/dr

 

t inducers in stack

see 

igure 2 

or wiring) 

  Clean ash and soot

rom combustion chamber and heat 

exchangers 

9.  Poor or reduced heat 

production 

  Flame too small 

 

  Entir

uel supply may be 

plugged 

 

Excessive ash buildup 
exchangers 

 

Through vision port, check 

lame to see i

 

lame is 

smaller than usual or too 
large and uncontrolled 

  Nozzle or preheater block may be plugged with carbon 

debris 

  Clean

  

r, both oil strainer and check oil pump screen 

 

 

Clean ash 

rom combustion chamber and exchangers 

 

OWH-75 Ten (10) Year Limited Warranty

EconoHeat (manufacturer) warrants to the purchaser of Unit Heaters listed above will be free 
from defects in materials and workmanship for the durations speciied below, which duration 
begins on the date of delivery to the customer. Customer is responsible for maintaining proof 
of date of delivery. 

If return is deemed necessary for warranty evaluation and determination of repair or 
replacement, unit heater is to be sent to the factory with freight prepaid. EconoHeat reserves 
the right to determine appropriate action for repair or replacement. 

No parts will be accepted by EconoHeat without RA# (return authorization number) clearly marked 
on outside of shipping package. Obtaining RA# requires model and serial numbers, description 
of part being replaced and nature of defect. Call factory to receive RA#.

Warranty Covers:
•  Combustion chamber and heat exchanger ten (10) years limited, full repair or replacement 

(parts only), irst three (3) fullly covered / last seven (7) 50% coverage

•  Oil heater block, twenty (20) years (parts only)
•  Oil heater block controller PCB, three (3) years (parts only)
•  All other components, one (1) year (parts only)

Troubleshooting Continued

Summary of Contents for OMNI OWH-75

Page 1: ...nd service instructions OWH 75 120v Manual EconoHeat 5714 E First Avenue Spokane Valley WA 99212 800 255 1363 www econoheat com Rev 01 2017 240 V Omni Heat NZ P O Box 112 Cromwell 9342 32 Ree Crescent...

Page 2: ...tallation Procedures Page 6 Stack Installation Page 7 Oil Supply Tubing Page 7 Wiring Page 8 Oil Burner Page 9 Oil Burner Technology Page 10 Initial Start Procedure Page 12 Maintenance Schedule Page 1...

Page 3: ...ation and service of OMNI Waste oil ired heaters The following instructions should be carefully followed for obtaining the best possible installation operation and service conditions Speciications are...

Page 4: ...aintenance Requirements Identical to any gas or oil furnace without adequate draft over the ire the combustion gases cannot escape the furnaces The lame will lengthen resulting in an overheated combus...

Page 5: ...without notice in materials speciications and models or to discontinue models 2 These appliances are designed for commercial or industrial use only Installation and use of this waste oil burning appli...

Page 6: ...Page 6 OMNI by EconoHeat Installation Procedures Figure 1 Installation Diagram...

Page 7: ...ieved Oil Supply Tubing 1 Use ONLY 1 2 or 3 4 nominal ID copper tubing with lare ittings only on the fuel suction from the tank to the heater Do NOT use ferrule ittings or Telon tape on any pipe it ti...

Page 8: ...cuit 20 amp protection using 12 gauge wire Connect power line to black wire and all whites NEUTRAL or COMMON together IMPORTANT Connect ground wire to ground mounting point in main junction box green...

Page 9: ...990 and the requirements of the inspection authorities having jurisdiction WARNING Igniter Transformer Air Band combustion air supply adjustment Power Indicator Run Indicator Figure 3 Oil Burner Back...

Page 10: ...Motor Compressor Flame Cone Nozzle Electrodes Figure 5 Oil Burner Front View Figure 6 Oil Pump Diagram Oil Inlet Oil Outlet Mounting Flange 3 or 4 bolt universal pattern Vanes Carbon Plate Remove Cov...

Page 11: ...ss electrode to electrode igniting the ine oil mist as it sprays out of the nozzle Once ignited the lame is forced into a swirl caused by the burners blower and specially designed lame cone providing...

Page 12: ...e electrodes when door is closed Pre Heater Control Circuit Board igure 9 Precisely controls temperature of the Oil Pre Heater Block and controls safety feature of not allowing burner to energize unti...

Page 13: ...tat terminals on the Oil Primary Control igure 3 Once the burner is running temporarily jump the F terminals on the Oil Primary not before burner tries to run or operate This will allow the burner to...

Page 14: ...embly requires the removal of the access panel allowing simple entry to the combustion chamber and heat exchanger s to vacuum out the accumulated ash soot hepa ilter recommended igure 10 below Check S...

Page 15: ...TO ENDCONE BURNER TUBE Tip of nozzle must be ahead of inside radius of end cone If nozzle is behind inside radius of end cone coking will occur and end cone can become clogged igure 8 below IMPORTANT...

Page 16: ...odes Nozzle Thermocouple Figure 11 Pre Heater Block Detail Removed From Burner for Clarity Figure 10 Electrode Adjustment Detail When cleaning inspect all three pieces thoroughly When disassembling an...

Page 17: ...I by EconoHeat Figure 13 Oil Filter Pancake Style Filter Remove 4 bolts for access to strainer ilter CAUTION must be careful not to destroy the inner gasket during removal of the housing Figure 12 Pum...

Page 18: ...and replace either i needed Figure 1 Back dra t in combustion chamber may be present Check dra t lue pipe over ire at vision port Air band open too ar Close air band while viewing lame open air band...

Page 19: ...ials and workmanship for the durations speciied below which duration begins on the date of delivery to the customer Customer is responsible for maintaining proof of date of delivery If return is deeme...

Page 20: ...g cost unless prior authorization in writing has been obtained NOTE Combustion Chamber Warranty is speciic to material and workmanship Workmanship means EconoHeat warranties the welds are good and wil...

Page 21: ...out tear off and return to manufacturer within sixty 60 days of purchase or warranty will not be valid Please print or type Date of Purchase Serial Model Customer Company Name Address City State Zip C...

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