THERMOBILE AT 400 Serie Manuel De L'utilisateur page 18

English
Suggestions and tips to simplify the
carrying out of the specified tasks or
actions.
1.2 Pictograms on the stationary used
oil fired heater (fig. 2)
A Warning for quantity of oil to be used
Instruction not to put the burner dish on a
cold surface
B Overheating thermostat
C Instruction for re-ignition.
D Positions of the burner: low and high.
1.3 Use this product for its intended
use
The stationary used oil fired hot air heater
has been designed for heating of workshops
of mechanization companies, heating and
frost protection of halls, transit sheds and
warehouses and heating of garage
workshops and warehouses.
1.4 General instructions
Warning
• Read this manual carefully
before using the heater.
• Keep this document with the
heater.
• Follow the described procedures.
• Never lean against the heater.
• Keep highly inflammable
materials at adequate distance
from the heater:
- top and sides 150 mm
- front 900 mm
- back and flue 450 mm
• Do not put the heater on an
inflammable floor.
• Make sure there is enough air for
good combustion.
• Only perform repair and
maintance work when the heater
has sufficiently cooled down, and
after removing the plug from the
socket.
18
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40.020.942 - rev. 04 - 2011
2 INTRODUCTION
2.1 Goal
These stationary used oil fired heaters are
direct fired heaters with thermal protection,
heat exchanger, combustion air fan, flue
stack connection with T-piece and draught
regulator and hot air fan.
The AT 500 is equipped with a connection for
a room thermostat
The hot air heaters have been tested at sea
level at a temperature of 20 °C.
2.2 Working principle
The stationary used oil fired heater is
equipped with three electric motors.
The first electric motor drives a fuel pump,
which extracts fuel from the fuel tank.
The second electric motor drives the
combustion air ventilator, which blows the
combustion air into the combustion chamber.
The third electic motor drives the hot air fan,
which draws the surrounding air around the
combustion chamber and heat exchanger.
The hot air is blown into the space to be
heated.
Diesel oil is poured manually on a burner
dish, which is ignited with a burning paper
pellet. As soon as the burner dish is at the
right temperature, the pump thermostat
activates the fuel pump; the control light
flashes on. The fuel pump pumps the used oil
onto the burner dish. The used oil evaporates
due to the temperature of the burner dish.
The gas vapour burns. A thermostat switches
on the hot air fan motor to blow hot air into
the space to be heated.
The pump thermostat switches off the fuel
pump when a failure causes the heater to
overheat.
The fuel pump is switched off when the
heater is switched off.
The hot air ventilator runs until the
combustion air thermostat switches off the
ventilator: this allows the heater to cool down.
The maximum thermostat switches off the
heater when the temperature gets too high.
AT 400 - 500 series