JCB-SH140D
Instruction & User Manual
21
Operation - Theory
Fuel System
This heater is equipped with an air pump that operates off of the electric motor. The pump forces air through
the air line connected to the fuel tank, drawing fuel to the nozzle in the burner head. Air also passes through the
nozzle where it mixes with the fuel and is sprayed into the combustion chamber in a fine mist.
Quick-Fire Ignition
A transformer sends high voltage to a two pronged spark plug. The spark ignition the fuel/air mixture as it is
sprayed into the combustion chamber.
Air System
A fan is turned by the heavy duty motor, which forces air around and into the combustion chamber, where it is
super-heated and forced out the front of the chamber.
Temperature Limit Control
This heater is equipped with a temperature limit control designed to turn the heater off should the internal
temperature rise to an unsafe level, if this device activates and turns your heater off, it may require service. Once
the temperature falls below the reset temperature, you will be able to start your heater.
Electrical System Protection
The heater’s electrical system is protected by a circuit breaker that protects the system components from
damage. If the heater fails, check the fuse first, and replace if necessary.
Flame Sensor
The heater uses a photocell to see the flame in the combustion chamber. Should the flame extinguish, the
sensor will stop electrical current and the heater will shut off.
Fuelling The Heater
CAUTION!
NEVER FILL FUEL TANK INDOORS. ALWAYS FILL FUEL TANK OUTDOORS. BE SURE
THAT THE HEATER IS ON LEVEL GROUND WHEN FUELLING, AND NEVER OVERFILL FUEL
TANK.
WARNING!
NEVER REFUEL THIS HEATER WHILE IT IS HOT OR OPERATING, FIRE OR
EXPLOSION COULD RESULT.
It is always a good idea to fire the heater outdoors for the first time. This will allow any oils used in the
manufacturing process to be burned off in a safe environment. This initial burn should last at least 10 minutes.
Ventilation
Risk of indoor air pollution. Use heater only in well ventilated areas.
Always provide a fresh air opening in the heated space of at least three square feet (2800sq.cm) for each
29kW/hr of heater output. The following are some examples..
-A two-car garage door raised 15.24cm (6 inches)
-A single-car garage door raised 15.24cm (9 inches)