Omni OWR-150 Operation manual

By
WASTE OIL FIRED MOBILE RADIANT HEATER
Operation and Service Instructions
Manual
MODEL OWR-150
Thank you and congratulations on your purchase of an Omni Waste Oil Fired Mobile
Radiant Heater. You have selected a high quality, precision-engineered piece of
equipment, designed to give you many benefits as well as years of outstanding
performance.
Econo Heat ♦ 5714 1st Avenue ♦ Spokane Washington 99212. ♦ [phone] ♦ www.econoheat.com
100267 Rev A2

2 Operation, and Service Instructions
PRECAUTIONS
Waste oil may contain many foreign materials. Waste oil may also contain
gasoline. Therefore, specific precautions on the handling and storage of waste
oils are to be observed when using, cleaning and maintaining this heater. Use a
screen in a funnel when pouring oil into storage tank to catch foreign
material, i.e., gasket material and sealant fibers, etc. WARNING: This
appliance is not designated for use in hazardous atmospheres containing
flammable vapors or combustible dust, or atmospheres containing
chlorinated or halogenated hydrocarbons. Do not expose this unit to rain
or moisture. If installed in high moisture atmosphere, a special cover for
the integrated air compressor must be obtained from factory to avoid
rusting of internal raw metals. If this occurs, see trouble-shooting guide for
remedy. Uses only crank case oil, gear oil, hydraulic oils, auto trans. Fluid or #1
and #2 furnace oil. Do not use old, contaminated oils that have been stored in
underground tanks or outside barrels for long periods. Excessive water and
sludge may be present, causing quick filter plugging.
NOTES: The instructions contained in this manual apply to the operation and
service of Omni Waste oil fired mobile radiant heaters. The following instructions
should be carefully followed for obtaining the best possible installation, operation
and service conditions. Specifications are subject to change without notice. This
heater was designed to be an auxiliary heat source and provide economical
disposal of waste oil. Proper operation depends on the consistency of the oil. Any
water or foreign material in the oil may cause the unit to shut down. If a
continuous stream of oil cannot be guaranteed at the heater, the main heating
system should be set above freezing which will prevent any building damage if
the waste oil heater were to overcome inoperative during subfreezing weather,
i.e. supply tank empty, filter plugged, etc.
UNCRATING: Immediately upon uncrating units, check the unit for any damage
that may have been incurred in shipment, if any damage is found, file a claim
with the transporting agency. The unit has been tested and inspected at the
factory prior to crating and was in perfect condition at that time. If anything is
missing check packing slip for indications of possible backorder of those parts or
components. Otherwise a claim must be for those missing parts.

IMPORTANT
NOTICE TO OWNER
AND INSTALLER
To enjoy the long term benefits of burning your used oil in an Omni Waste Oil Burning appliance,
it is necessary to become familiar with the correct operation and maintenance of your new heater.
Before operating this appliance, make sure you read and understand this manual.
IMPROPER OR LACK OF MAINTENANCE
WILL VOID THE WARRANTY
The most critical sections of this manual are in order of importance as
follows:
•Basic Operation Knowledge
•Oil Suction Line
•Correct Draft Over Fire
•General 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 overheated
combustion chamber. Burning used oil is similar to burning wood. A fine gray ash accumulates
in the combustion chamber. This accumulation of ash will eventually affect the performance of the
heater and must be removed.
These topics are discussed in detail on the following pages. Please familiarize yourself with these
sections of your manual. Spending a few minutes to review this material will assure that you
receive the return on investment that you expect from your Omni Radiant heater.
Operation and Service Instructions 3

SPECIFICATIONS
BTU’S/HR OUTPUT 150,000
GALLONS PER HOUR 1.0
VOLTAGE
REQUIREMENTS 120V 60Hz Single Phase
AMPS FULL LOAD 8.4 A
WEIGHT 180 LBS
TANK CAPACITY 10.6 Gallons
DIMENSIONS L/W/H 50”x28”x34”
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. Output depends on BTU content of oil used.
3. Atomizing Air Pressure for all fuels 10 P.S.I.
Figure 1 – Temperature Diagram
4 Operation, and Service Instructions

Figure 2 – Inclination
50”
34”
Figure 3 – Dimension
Operation and Service Instructions 5

WIRING DIAGRAM
WHT
BLU
WHT
RED
BLK
ORN
OIL
PREHEATER BLOCK
CONTROLLER
WHT
RED
HTR
PRI
L2
L1
BLOWER MOTOR
WHT
HIGH
VOLTAGE
TRANS-
FORMER
BLK
PHOTO EYE
FLAME SENSOR
OIL PRIMARY CONTROL
(IE, Honeywell, etc.)
BLK
ORN
WHT
THERMOSTAT
CONNECTION
500W
HEAT
ROD
Bi
METAL
HIGH
LIMIT
SWITCH
THERMO-
COUPLE
OIL
PREHEATER
BLOCK
Fuse
Power Switch
BLK
BLK
WHT WHT
RED
WHT
WHT
WHT
RED
BLU
RADIANT HEATER
2
3
5
8
9
RED
BLOWER TIMER
WHT
RED
Power Plug
BLK
Oil Valve
Delay Timer
6 Operation, and Service Instructions

OIL BURNER
Oil Primary
Control
Igniter
Transformer
Air Pressure
Adjuster
Power
Indicator
Run
Indicator
Air Band
(Combustion Air
Supply
A
djustment)
Air
Compressor
Air Pressure
Gauge
Oil Pressure
Gauge
Figure 4 – Oil Burner (Back View Closed)
Operation and Service Instructions 7

Pre-Heater Control
Circuit Board
Oil Pre-Heater
Block Air
Muffler/Filter
Electrical
Terminal Block
Photo Eye
Flame Sensor
Transformer
Igniter Springs Heater
Electrical
Schematic
Figure 5 – Oil Burner (Back View Opened)
Electrodes
Oil Valve
Nozzle
Burner
Motor Flame Cone
Figure 6 – Oil Burner (Front View)
8 Operation, and Service Instructions

Fuel Pump
Fuel Regulator
Fuel Filter
Figure 7 – Radiant Heater (Back View)
OIL BURNER TECHNOLOGY
Omni’s patented burner technology improves the efficiency of the oil burn process by continuous
stabilization of the oil viscosity. Optimum atomization (spray) is accomplished by precisely pre-
heating the oil and air prior to introduction to the combustion chamber. The waste oil enters into
the Oil Pre-Heater Block (figure 5) and is pre-heated to operating thermo setpoint, then
compressed air from the air compressor (figure 4) 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 above the nozzle (figure 6) provides continuous electrical
arc across electrode to electrode igniting the fine oil mist as it sprays out of the nozzle. Once
ignited the flame is forced into a swirl caused by the burners blower and specially designed flame
cone (figure 6) providing a very efficient and thorough burn of the waste oil.
Burner Components
•Igniter Transformer: (figure 4) Supplies high voltage to the electrodes generating
electrical arc igniting the oil.
•Oil Valve: (figure 6) energizes when burner is running and de-energizes when burner is
not running eliminating bleed back of oil out of the Pre-heater block.
•Air Band: (figure 4) Adjusts amount of air introduced into the combustion chamber. Air
band is adjusted at the factory for optimum performance ½ to ¾ inch. NO FIELD
Operation and Service Instructions 9

ADJUSTMENT REQUIRED unless in high altitudes application where minor adjustment
may be required.
•Oil Primary Control: (figure 4) Controls the oil burner ignition. Checks for flame in the
combustion chamber, if no flame is detected within 45 seconds, the oil primary will
shutdown the oil burner. To restart the unit, reset the red button on the oil primary.
•Oil Pre-Heater Block: (figure 5) Pre-heats the oil and air before entering combustion
chamber.
•Photo Eye: (figure 5) Senses flame in combustion chamber and signals oil primary when
no flame is present.
•Igniter Springs: (figure 5) Transfers the high voltage from the igniter transformer to the
electrodes (when door is closed)
•Air Pressure Gauge: (figure 4) Displays air pressure supplied by onboard air
compressor.
•Air Compressor: (figure 4) Supplies air used within pre-heater block to aid in
atomization of the oil.
•Air Muffler/Filter: (figure 5) Filters air and muffles the sound generated by the
compressor.
•Pre-Heater Control Circuit Board: (figure 5) 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 setpoint or shutdown burner if Pre-Heater Block
temperature falls below shutdown thermo setpoint.
•Electrodes: (figure 6) Provides continuous high voltage electrical arc from electrode to
electrode igniting the waste oil as it is being sprayed out of the nozzle.
•Nozzle: (figure 6) Low pressure nozzle for oil spray pattern.
•Flame Cone: (figure 6) Specially engineered flame cone forces the flame into a swirl
pattern improving the burn thoroughness.
•Burner Motor: (figure 6) Multitask motor turns the burner blower and integrated air
compressor.
•Air Pressure Adjuster: (figure 4) Adjusts the air pressure going to the pre-heater block.
Should be adjusted between 12 PSI and 13PSI as indicated on the Air Pressure Gauge
on the burner for thorough burn of the waste oil.
Note: In order to insure proper air adjustment, air gauge must read 0 when burner
is cycled off or powered down.
•Oil Pressure Gauge: (figure 4) Displays oil pressure at the burner. Adjust flame to 3/4
length of combustion chamber (figure 8) by increasing CW or decreasing CCW the
adjuster located on the left side of burner (figure 9). The fuel regulator increases or
decreases delivery of fuel to the burner. When you increase or decrease the fuel to the
burner you will notice the flame length will increase or decrease.
IMPORTANT:
Once adjusted for correct flame length, take note of oil gauge setting for bench mark
pressure reading needed when burning the specific fuel mixture generated by the owner.
PLEASE NOTE- Once flame is set the oil pressure gauge can read various pressures
when different viscosities of oils are used. The oil pressure gauge is an indicator of
where the PSI reading will be when that oil viscosity is being burned. The oil gauge is
used for servicing diagnostics assistance.
10 Operation, and Service Instructions