Theory Of Operation; Fuels; Ventilation - Desa R40 Manual Del Propietário

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THEORY OF OPERATION

4

FUELS

VENTILATION

THEORY OF OPERATION
The air pump forces air through the air line. The air
The Fuel System:
is then pushed through the nozzle. This air causes fuel to be lifted from
the tank. A fine mist of fuel is sprayed into the combustion chamber.
The Air System:
The motor turns the fan. The fan pushes air into
and around the combustion chamber. This air is heated and provides
a stream of clean, hot air.
Combustion Chamber
Clean
Heated
Air Out
Nozzle
Fuel
Tank
Air For Fuel System
Figure 4 - Cross Section Operational View
FUELS
WARNING: Use only kerosene, #1/#2 diesel/fuel
oil, JET A or JP-8 fuels to avoid risk of fire or explo-
sion. Never use gasoline, oil drained from crank-
cases, naphtha, paint thinners, alcohol or other highly
flammable fuels.
Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels.
Heavier fuels such as No. 2 fuel oil or No. 2 diesel fuel may also be
used but will result in:
• noticeable odor
• additional fuel filter maintenance
• the need for nontoxic, anti-icer additives in very cold weather
Do not use fuels heavier than No. 2 grade or heavy oils such as oil
drained from crankcases. These heavy oils will not ignite properly
and will contaminate the heater.
IMPORTANT: Use a KEROSENE ONLY (blue) or DIESEL ONLY
(yellow) storage container. Be sure storage container is clean. For-
eign matter such as rust, dirt, or water will cause the ignition control
assembly to shut down heater. Foreign matter may also require
heater's fuel system to be frequently cleaned.
Ignitor
Fuel
Air Line
Filter
To Burner
Air For Combustion
And Heating
For more information, visit www.desatech.com
For more information, visit www.desatech.com
The Ignition System:
power to the ignitor. This ignites the fuel/air mixture in the combus-
tion chamber.
The Flame-Out Control System:
shut down if the flame goes out.
Air Pump
Motor
Air Intake
Filter
Fan
Cool
Air
In
Air
Output
Filter
Ignition Control
Assembly
Fuel
VENTILATION
WARNING: Provide a fresh air opening of at least
three square feet (2,800 square cm) for each 100,000
Btu/hr rating. Provide extra fresh air if more heaters
are being used. The minimum ventilation require-
ments must be followed to avoid risks associated
with carbon monoxide poisoning. Make certain these
requirements are met prior to operating heater.
Example: A 58.6kw (200,000 Btu/Hr) heater requires one of the
following:
• a two-car garage door [4.88 meter (16 feet) opening] raised
12.7 cm (5 inches)
• a single-car garage door [2.74 meter (9 feet) opening] raised
20.3 cm (8 inches)
• two, 76.2 cm (30 inch) windows raised 38.1 cm (15 inches)
The ignition control assembly provides
This system causes the heater to
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