AT 300 series
40.020.933 - rev. 04 - 2011
19
English
1.2
Pictograms on the stationary used
oil fired heater (fig. 2)
A Information about the used oil.
B Positions of the burner: low and high.
C Warning for overheating and switch off.
D Instruction for use.
E Instruction for re-ignition.
1.3
Use this product for its intended
use
The stationary used oil fired hot air heater
has been designed for heating of workshops
at mechanization companies, heating and
frost protection of halls, transit sheds and
warehouses and heating of garage
workshops.
1.4
General instructions
2
INTRODUCTION
2.1
Goal
These stationary used oil heaters are direct
fired heaters with thermal protection and
connections for a flue with rain cap and
optional room thermostat.
The AT 307 is equipped with a hot air fan.
The hot air heaters have been tested at sea
level at a temperature of 20
°
C.
2.2
Working principle AT 306
The stationary used oil fired heater is
equipped with an electric motor for driving the
fuel pump.
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.
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 fuel supply has an overflow that ensures
that the used oil flows back into the fuel tank
when the fuel pipe is blocked.
The overflow protection switches off the fuel
pump when the burner dish overflows.
2.3
Working principle AT 307
The stationary used oil fired heater is
equipped with three electric motors.
The first electric motor drives a fuel pump,
which pumps up the fuel from the fuel tank.
The second electric motor drives the
combustion air fan, which blows the
combustion air into the combustion chamber.
The third electric motor drives the hot air fan,
which extracts the hot air around the
combustion chamber. The hot air is blown
into the space to be heated.
Suggestions and tips to simplify the
carrying out of the specified tasks or
actions.
Warning
•
Read this manual carefully
before using the hot air heater.
•
Keep this document with the hot
air heater.
•
Follow the described procedures.
•
Never lean against the hot air
heater.
•
Keep highly inflammable
materials at adequate distance
from the hot air heater:
-
top side 150 mm for the AT
307
-
top side 1200 mm for the AT
306
-
front and sides 900 mm
-
back 450 mm
•
Make sure there is enough air for
good combustion.
•
Only perform repair and
maintenance work when the hot
air heater has sufficiently cooled
down and after removing the plug
from the socket.
