Cang Zhou New High Auto Radiator Manufacturing FJH Series User manual

Cang Zhou New High Auto Radiator Manufacturing Co.,Ltd
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FJH series Air Diesel Parking Heater
(2KW, 3KW and 5KW)
Cang Zhou New High auto radiator manufacturing Co.,Ltd
Cang Zhou New High Auto Radiator Manufacturing Co.,Ltd

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1.Working Principle
FJH series air diesel parking heaters (hereinafter referred to as the heater) are
independent to the original engine system. It makes use of 12V or 24V direct current
to drive. There are two kinds of control mode of the heater: Automatic control mode
and Manual control mode. The heater adopts light diesel which corresponds to the
environmental temperature as fuel, and it can be started and operated normally at the
temperature of above -40℃. The inhaled fresh air is heated to hot air through heat
exchanger by the energy which comes from fuel burning, then blown to where it is
needed. This type of heater owns the advantage of compact structure, light weight,
high thermal efficiency, economization of electricity and fuel, easy installation.
2. Principal Technical Parameters
Heater
Model
Air heater 2KW
Air heater 3KW
Air heater 5KW
heating
medium
air
air
air
Heating
power(W)
1000-2000
1000-3000
1000-5000
Hot air
outflow(M
/H)
83
160
176
Fuel
consumpti
on(L/H)
0.2-0.24
0.22-0.36
0.22-0.49
Working
electric
consumpti
on power
19-39
19-43
19-48

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Low-volta
ge
protection
limits
10/21.5V
10/21.5V
10/21.5V
High-volta
ge
protection
limits
15/32V
15/32V
15/32V
Environm
ental
temperatur
e
Working
temperat
ure
Storage
temperat
ure
Working
temperat
ure
Storage
temperatur
e
Worki
ng
tempe
rature
Storage
temperature
Heater
-40℃-40
℃
-40℃-85
℃
-40℃-40
℃
-40℃-85℃
-40℃
-85℃
-40℃-85℃
Dosage
fuel
pumps
-40℃-50
℃
-40℃-10
5℃
-40℃-50
℃
-40℃-105
℃
-40℃
-105
℃
-40℃-105℃
Hot air
inlet
temperatur
e
Maximu
m 40℃
Maximu
m 40℃
Maximu
m 40℃
Maximum
40℃
Maxi
mum
40℃
Maximum
40℃
The main
body’s
weight
About 2.63kg
About 3.67kg
About 4.4kg

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3.Structure and working principle
After the heater starts, the glow plug comes into operation, the magnetic pump
begins to supply fuel, combustion-supporting fan inhales combustion-supporting air
from outside of car. The fuel generates the heat by burning in combustion chamber,
which is taken by aluminum heat exchanger. The inner air pushed by the heat
exchange fan brings heat to where it is needed through the surface of heat exchanger.
And the combustion emission is discharged through exhaust pipe.
3.1. The structure of hood-shape case
1-Main engine; 2-Suction hood; 3-Upper hood; 4-Bottom-hood; 5-Air outlet ; 6-Rear
hood ;
1.Exhaust tube 2.Combustion pipe 3.Combustion chamber 4.Fuel tube 5.Air inlet
distributor 6.Gasket 7.Combustion supporting fan blades 8.Bracket of fan motor
9.Gasket 10.Combustion supporting air inlet 11.Fan motor 12. Blade wheel of
heating fan 13.Main control panel 14.Fixing screw 15.Fixing screw 16.Fixing
screw 17. Glow plug 18.heat sensor
19. Sensor Fixed bracket

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3.3 The controlling unit
The controlling unit is located at the forefront of the heater and the rear part of
the heat supply fan wheel. It includes the single microprocessor, the driving electrical
circuit, the signal acquisition electrical circuit of the frequency, the rotational speed,
the voltage, temperature monitoring electrical circuit. It retains the characteristics of
automatic heating process, automatic systematic monitoring and automatic fault
processing.
3.3.1 The control of the working process
During the heating process(on-working-off), the heater controls and modulates
the rotational speed, the frequency of the fuel pump and the driving of the electric
plug by chronically corresponding to these parameters: the expected figure and real
figure of the open temperature, the responsive signal of the motor’s rotational speed,
the fuel pump’s frequency, the surface temperature of the heat exchanger.
3.3.2 Malfunction management
When there are phenomena that the heater fails to ignite normally or there is
abnormal combustion or there are the open circuit or short circuit with the electric
plug, the motor, the fuel pump and the sensor, the heater will automatically lurch to
the locking state to protect the heater, which ushers in the imminent conditions that
the electric plug stops working, the motor stops rotating and the indicative lights of
the controlling switch shines).
3.3.3 Fault display
When there is something wrong with the heater, the indicative light(the green
light) will show where the problem is so as to help repair the heater.
During the fault state, the light pipe will shine at different frequencies. The times
of the shining will imply different fault codes. Details are seen as follows:
Code number
Fault type
Reasons and dealings
Code 1
Fuel pump problem
Check whether the fuel
pump has been connected
with the heater or there
is the open circuit
phenomena or the line
circles have been burned
Code 2
Glow plug problem
Check whether the glow
plug has been firmly
inserted in the heater or the
there is the open or short
circuit concerning the
glow plug or whether there
is lots of accumulated
carbon

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Code 3
Motor problem
Check whether the motor
has been connected with
the heater or there is the
open or short circuit or the
motor is stuck with
obstacles
Code 4
Sensor problem
Check whether the sensor
has been connected with
the heater or whether there
is the open or short circuit
or whether the sensor has
fallen off the heater
Code 5
Over-high voltage
Check whether the heater’s
voltage is in conformity
with the vehicle’s voltage
whether the generator of
the vehicles produces
voltage over 28V
Code 6
Over-low voltage
Check whether the
automotive storage has
been lack of electricity,
leading to the phenomenon
that the voltage has been
below 22V
Code 7
Controller problem
Check whether the
controller has been
connected with the heater
or whether there is short or
open circuit with the
heater
Code 8
The combustion
suspension
Check whether there is
enough fuel through the
fuel route or whether the
air inlet has been blocked
or whether there is lots of
bubble in the fuel pipes(if
there is lots of bubble
which cannot be emitted,
please just change another
fuel pump)
Code 9
Motor with fan stopping
Check whether the radiator
fan and the combustion
impelling fan has been
stuck

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Code 10
Three times of ignition
failure
Check whether there is
something wrong with the
fuel pump or whether the
diesel has been connected
with the heater or whether
there is blocking
phenomena with the fuel
route
Code 11
Chip body damage
Check whether radiator fan
has been damaged or
whether the air inlet has
been blocked or whether
the air outlet has been
blocked
Code 12
The over-high air inlet
temperature
The inner cabin
temperature has been
warm enough and there is
no need to use the heater.
Check whether the air
outlet has been linked to
the outside or whether the
hot wind has been sucked
in by the air inlet
Code 13
Controller failure
Check whether there is
unsteady voltage or the
controller has been
damaged from moisture or
whether the positive and
negative sides have been
linked the other way or the
supply voltage does not
match with the heater’s
voltage. If there is this
kind of phenomenon,
please just change another
new one
Code 14
The short circuit of the
fuel pump
Check whether there is the
short circuit with the pump
route and the short circuit
of the pump route for a
long time shall cause
damage to the controller
Code 15
The short circuit of the
glow plug
Check whether there is too
much accumulated carbon

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on the glow plug. The
long-time short circuit
shall result in damage
Code 16
The short circuit of motor
Check whether there is
damaged line between the
motor line and aluminum
bracket. The long time
short circuit will result in
the damage of the
controller
3.4 Sensor equipment
3.4.1 carbon monoxide sensor(some low equipped heaters
haven’t got this function)
The equipment carbon monoxide sensor is installed on the controller to check the
concentration of carbon monoxide in the cabin. When the concentration is bigger than
the normal figure, the alarm happens.
3.4.2 Temperature sensor
The temperature sensor is located in the hot air intake to monitor its air
temperature. The controller can change the working state of the burner and modulate
the heat output according to the monitored figure.
3.4.3 Outer equipped inner cabin temperature sensor
This kind of sensor is customer-oriented. Some kinds of heaters have not got this
function.
3.4.4 Power supply
The heater’s power supply must use 12V/24V storage battery and have one
independent safety control. When the power supply voltage is smaller than the limit or
bigger than the limit, the heater will come automatically into the locking state and

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there are the fault codes on the screen.
3.4.5 Fuel supply
The heater can get the fuel supply from the fuel tank of the vehicle or the
independent fuel tank. The transmission and dosage of the fuel supply can be
modulated through the special fuel tank.
4. The installation of the heater
The heater installation must be done with special equipment. The installation
details can be seen as follows the view 7. The precise position of various equipment,
fixing ways may vary
according
to different kinds of vehicles or it will influence the heater’s workings or even bring
harm to the person’s safety.
4.1 The requirement of the heater installation and using places.
4.1.1 There is no allowing of using the heater close to the combustible gas or flour.
4.1.2 There is no allowing of using the heater in the closed space(such as the garage,
repairing garage with no ventilation equipment) in case there should be phenomena of

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poison.
Attention: Under the above circumstances, even though the heater stays at the locking
state no operating like that
4.1.3 There is no allowing of using the heater in the bedroom.
4.1.4 Heaters installed in the special used vehicles should obey specific rules.
4.1.5 There should be avoidance of gas container. Compressor pipes, extinguishers,
clothing, paper and so on must not be closed to the heater or the heater’s hot air outlet.
4.2 The main body’s installation
The main body of the heater can be installed within or outside the vehicle. When
the heater is installed outside the vehicle, there should be strengthened installations of
protection cap(offered by dealers). The heater cannot be dipping into water or for a
long time. If the heater is soaked in water for a long time, only when the heater is dry
can it be checked and connect electricity.
In order to keep the air flow and give easier installations and maintenance, the
installation positions should have enough space. The various installation sizes of the
heater can be viewed as picture 8 the referred range of the double wires two-dot chain
line.
Good sealing is necessary between the main heater and the installation surface on
the vehicle.The special gasket supplied by the manufacturer must inserted in.And the
installation surface must be even.Its parts at the installation bases of the main heater
should have unevenness less than1mm.After drilling installation holes, evenness must
be improved according to this requirement.At installation, please rotate the four M6
nuts tight, which are provided by the manufacturer.

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For re-installation of the main heater, a new gasket must be used to replace the
old one.
Attention must be paid to that the inclination angle shall not exceed the limit, or
normal operation will be affected. Direction for installation of the main heater is
shown in the following picture.
After installation of the main heater,please check and make sure that there is no
contact or friction between the blade wheel of fan and other nearby parts to avoid
non-smooth operation.
4.3 Installation of Air Heating System
The air heating system of the heater should not be connected with the air channel
of the vehicle.Either independent outer circulation or inner circulation mode can be
adopted.
When an external heating air tube is attached to the heater, the tube diameter
should not be smaller than 85mm.Its material should be capable to resist temperature

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of 130℃。
The maximum pressure drop between the air inlet side and outlet side of the air
heating system should not be higher than 0.15kPa.
The hot air from the heating system should not erupt onto such parts which are
unable to resist heat.In passenger vehicles,the hot air vent should not be blocked by
passengers.A self-provided protective net can be installed if necessary.
For heater working in external circulation mode,the position of air inlet port should be
proper to guaranteed that under normal operation no splash of water can be sucked
into the heater the no exhaust from the engine can be sucked in.
For heater working in internal circulation,measures should be taken to avoid
re-entering of the supplied hot air into the air inlet port.If no air inlet tube is attached
in this mode,an air inlet hood with grids must be installed at the air inlet port of the
main heater.The inlet air should be drawn from the cold area of the compartment,such
as under the seats or berths.
4.4Installation of Fuel Supply System
Fuel for the heater can be supplied from the fuel tank of the vehicle or an
additional independent fuel tank. It is not allowed to install the fuel tank in the cab or
passenger compartment or any region that is possibly to cause fire if an independent
fuel tank is used.

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The elevation difference between the heater and fuel pump, and between the fuel
pump and the fuel pump produces pressure from fuel to the fuel pump.The inner
diameter and length of the fuel tube is related to the resistance of the fuel route.Please
consider such factors for installation.
4.4.1 Fuel pump installation
The fuel pump should be installed in places that can avoid heat radiant from the
vehicle parts that can emit heat and in places with cool air.Its ambient temperature
should not exceed 20℃. Directions of installation of the fuel pump are shown in the
following picture. When installing the fuel pump, please use the fuel pump holder
supplied with the heater to hold the pump tight. The pump is fixed with the
shock-reducing tightening piece.
4.4.2 Fuel Filter installation
The fuel filter device should be installed before the fuel inlet port.Please make

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sure that the fuel flow is correctly followed. Its position shall be in conformity with
the above picture.
4.4.3 Installation of Fuel Tube
Only the flexible nylon tube, which has good light-resistance and thermal
stability ,supplied with the heater can be used as the fuel tube. The inner diameter of
the tube is Ø2mm.
The position of fuel tube should be against flying stones and be away from any
heat emitting parts of the vehicle. Protective device can b installed if necessary.
The fuel tube from the fuel pump to the main heater should be in any directions other
than downward direction. The fuel tube shall be tied in some proper location to make
it fixed. The distance between two ties shall be less than 50cm.
The fuel tube fittings supplied with the heater should be used for connections
between fuel tube and fuel pump,fuel tube and heater,fuel tube and sucking tube of
fuel tank and fuel tube and reducing T.The fuel tube should tie with fuel tube
clamps.Bubbles should be eliminated from the connecting places.
a) √ b）×
4.5 Installation of Fuel Taking Device
The openings on the fuel tank (or tank cover)for installation should be
appropriate in size,with trimmed brim and with good eveness around the
opening.Good sealing is necessary for the base of the fuel taking tube.The bottom end
of the fuel taking tube should be 30mm-40mm from the bottom of fuel tank to suck
enough fuel and at the same time to avoid sucking in impurities sediment on the
bottom of fuel tank.

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If fuel is taken from the fuel pipe to the engine,the fuel pipe from the fuel tank to
the fuel filter should be disconnected and re-connected with the thicker pipes of the
reducing T.And the thinner pipe of the reducing T should connect the fuel pump of the
heater via fuel tube fitting and tube. The angle of installation must in conformity with
following picture, or normal work of the heater will be affected.
After installation, the vehicle engine shall be started and then turned off after one
minute’s work to eliminate air trapped in the fuel sucking pipe.
4.6 Installation of Combustion Supporting Air Sucking Tube and
Exhaust Discharge Tube
The combustion supporting air must be sucked in from external fresh air outside
the vehicle.The exhaust from combustion must be discharged into the air through
exhaust tube. Measures must be taken to avoid the exhaust from re-entering he
vehicle.
The tubes go through the outer wall or holes on the bottom of vehicle.Measures

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must be taken to prevent entering of splash water. The tubes must be protected and
can resist shock permanently.
Only the air inlet tube and exhaust tube provided with the heater can be used.
The air inlet tube is a corrugated pipe made of a aluminum tube that it’s surface is
covered by plastic and paper: The exhaust tube is corrugated stainless steel tube.
Please identify them and do not make mistake st installation. To connect them with
heater, please use the supplied clamps to fix them tightly on the combustion
supporting air inlet and exhaust tube vent respectively. The protective hood on the
vents of the air inlet tube and exhaust tube must be kept in good condition. Do not
damage them or remove them.
Both the air inlet tube the exhaust tube should come outwards and downwards
from the heater, otherwise a Ø4mm hole shall be prepared at the bottom of the tube
for discharge of condensation water. If the tube need curve, the radius cannot be
smaller than 50mm.Also, the sum of all curve angles for each tube shall not exceed
270℃.
The opening of the tubes should not be opposite to the direction of the running
vehicle.
The tube openings should not be blocked by slurry,rain and snow or other dirt.
The exhaust tube should be installed in far distance from the plastic parts or other
objects with poor thermal resistance of the vehicle body.The exhaust tube should be
properly fixed.The exhaust vent should be downwards,perpendicular to road surface
with angle of 90°±10°.To ensure such an angle,the fixing clip for the exhaust tube
should be within 150mm from the tube end.

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4.7 The installation of electrical equipment
4.7.1 The linking harness can be seen below picture 20.

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5 How to use the controller
To operate by using this controller
5.1 Turn the knob clockwise and connect the power supply of the controller and then
the signal light is on. At this time, the heater starts working. The controller will carry
out the working procedures according to the set target by the knob position. During
the starting stage, it takes 45S to link the controller with the fuel pump.
5.2 When the heater starts working, if you want to modulate the temperature and
power of the heater, just turn the controller
5.2.1 If the mode switch stays at the releasing state(air conditioning pattern) the
pattern signal light turns red. If you want to modulate the heating temperature, please
just turn the knob. Press the pattern transfer switch and the pattern signal light will
turn red, which indicates the transference into the ventilation pattern.
5.2.2 If the mode switch stays at the ventilation pattern, the indicative light will turn
green. If you want to modulate the power, just turn the controller. Release the mode
switch and the indicative light will turn red, which shows that the heater will switch
into the air conditioning pattern.
5.2.3 If there is need to turn off the heater manually, turn the knob to “0”
anti-clockwise. After 3 seconds, the working signal light will become dark. If the fuel
pump stays at the working state before the , the heater will stop working immediately
and the fan will continue to run for 180 seconds and then just stop.
6.General maintenance
Circuit troubles of heater may be caused by following reasons, such as corrosion
of connectors, poor contact of connectors, wrong connection of wires,corrosion of
wires or fuse, corrosion of battery poles,etc. Users need to check the prevent above