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Installation, Operation, And Service Instructions 

 

 

 

MODEL 

OWH-150 

OWH-250 

OWH-350 

OWH-500 

BTU’S/HR INPUT 

150,000 

250,000 

350,000 

500,000 

BTU’S/HR OUTPUT 

120,000 

215,000 

300,000 

410,000 

GALLONS PER HOUR 

1.0 

1.75 

2.4 

3.4 

VOLTAGE REQUIREMENTS 

115 

115 

115 

115 

AMPS FULL LOAD with 
Pump 

14.6 

17.0 

18.7 

23.5 

FAN MOTOR HP 

1/4 

1/3 

2 @ 1/4 each 

2 @ 1/3 each 

FAN MOTOR RPM 

1075 

1075 

1075 

1075 

FAN DIA/PITCH 

18/36 

24/18 

18/36 

24/18 

CFM (FREE AIR) 

3762 

4466 

6275 

9001 

CFM W/ DUCTWORK at 100 
FT 

1380 

2000 

1600 

3701 

EFFECTIVE AIR FLOW 

50 FT 

60 FT 

70 FT 

100 FT 

FLUE SIZE 

8” 

8” 

8” 

10” 

WEIGHT W/ BURNER 

240 LBS 

365 LBS 

400 LBS 

660 LBS 

SHIPPING WEIGHT 

375 LBS 

535 LBS 

575 LBS 

725 LBS 

DIMENSIONS L/W/H 

42-22-25 ½ 

44-30-28 ½ 

54-29 ½-28 ½ 

72-38-34 ½ 

SHIPPING DIMENSIONS 
L/W/H 

64 ½-30-49 

64 ½-39-49 

76-38-49 

92-44-50 

 

Notes: 

1. 

All illustrations and specifications contained herein are based on the latest information 
available at the time of publication approval.  Econo Heat reserves the right to make 
changes at any time without notice, in materials, specifications, 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 appliance shall be in accordance with the Standard for the 
Installation of Oil Burning Equipment-ANS/NFPA 31-1987, and National Electric Code - 
ANSI/NFPA 70-1990 and the requirements of the inspection authorities having jurisdiction. 

 

3. 

Output depends on BTU content of oil used.

 

4. 

Atomizing Air Pressure for all fuels 10 P.S.I.

 

5. 

Furnace not to be used with air filters.

 

6. 

Intended maximum outlet air temp. 200 degrees F. (93 degrees C) or less.

 

7. 

Clearance from combustible materials on all models not to be less than: 

 

 

 

 

 

TOP- 

6” 

BOTTOM- 

18” 

SIDES- 

18” 

 

REAR- 

18” 

FRONT- 

48” 

FLUE PIPE- 

18”

 

 

Mounting Dimensions: 

 

         

 

 

 

 

 

 

 

SPECIFICATIONS 

Heater 

(Top) 

MODEL              A                  B 

 

OWH-150        

35 ½”            20” 

 

OWH-250        

35 ½”            22 ¼” 

 

OWH-350        

47 ¾”            22 ¼” 

 

OWH-500        

63 ¼”            28 ¾” 

Summary of Contents for OWH-150

Page 1: ...tructions Manual 240v Thank you and congratulations on your purchase of an Omni Waste Oil Fired Heater You have selected a high quality precision engineered piece of equipment designed to give you man...

Page 2: ...n this manual apply to the installation operation and service of Omni Waste oil fired heaters The following instructions should be carefully followed for obtaining the best possible installation opera...

Page 3: ...eneral Maintenance Requirements Identical to any gas or oil furnace without adequate draft over the fire the combustion gases cannot escape the furnaces The flame will lengthen resulting in an overhea...

Page 4: ...herein are based on the latest information available at the time of publication approval Econo Heat reserves the right to make changes at any time without notice in materials specifications and models...

Page 5: ...ack if the draft up the stack exceeds 08 Draft up the stack must be 04 to 06 inches of water column Check with draft meter between the top of the heater and damper The over fire draft should be a mini...

Page 6: ...to the inside supply tank is acceptable and available from Econo Heat 4 The fuel supply pump included with heater is to be mounted at tank level or below figure 1 This pump turns slowly requiring a nu...

Page 7: ...al common white to white 3 Wire low voltage thermostat into T marked terminals on oil primary control on burner Box on burner gun assembly with red reset button figure 3 All unit heaters are designed...

Page 8: ...lock 240v Photo Eye Flame Sensor Transformer Igniter Springs 240v Pre Heater Control Circuit Board Electrical Terminal Block Igniter Transformer 240v Air Band combustion air supply adjustment Oil Prim...

Page 9: ...on And Service Instructions 9 Figure 5 Oil Burner Front View Figure 6 Oil Pump Diagram Oil Valve 240v Flame Cone Nozzle Electrodes Burner Motor 240v Oil Inlet Oil Outlet Igniter Transformer 240v Oil P...

Page 10: ...air compressor figure 3 is mixed with the oil prior to spraying out the nozzle similar to fuel injection by breaking up the oil droplets into a finer mist or spray atomization Electrodes mounted just...

Page 11: ...trol Circuit Board figure 4 Precisely controls temperature of the Oil Pre Heater Block and controls safety feature of not allowing burner to energize until oil has established operating thermo setpoin...

Page 12: ...re the thermostat is turned off apply power to the burner Switch burner main power switch to ON position After allowing the oil pre heater time to establish temperature setpoint approximately 5 minute...

Page 13: ...insure all air is removed IMPORTANT When fully purged and flame is established remove temporarily jumpers on F terminals of the Oil Primary to allow safety features of the unit to operate properly 13...

Page 14: ...hould be check periodically and at time of installation to be sure they are set as noted in the following dimensional drawing Swing burner clean out door back for inspection figure 5 10 and 11 CAUTION...

Page 15: ...10 Electrode Adjustment Detail Figure 11 Pre Heater Block Detail Removed From Burner for Clarity Figure 12 Combustion Chamber and Heat Exchanger Cleanout Door Models OWH 250 350 500 Nozzle Electrodes...

Page 16: ...in On Filter above Pancake Style Filter below Remove 4 bolts for access to strainer filter CAUTION must be careful not to destroy the inner gasket during removal of the housing Filter Housing Spin On...

Page 17: ...replace Check filter clean if needed 4 Reduced air pressure Gauge may be bad Replace gauge cannot increase Intake filter muffler is plugged Remove Clean with carburetor cleaner with dust or dirt dry t...

Page 18: ...aft Flame end Swing open burner door and clean ash build up from flame Need to reset primary cone may have ash end cone See Figure 5 8 Flame too small Increase pump motor speed See Figure 7 9 Proper d...

Page 19: ...rated or has been misused 5 Wiring not in accordance with diagram furnished with unit heater 6 Unit heater is operated in the presence of chlorinated vapors 7 Air through unit heater is not in accorda...

Page 20: ...20 Installation Operation And Service Instructions...

Page 21: ...___ Customer Name_____________________________________________________________________ Address____________________________________________________________________________ City ________________________...

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