Elitex DH-20 User manual

DIESEL/KEROSENE
FORCED AIR HEATER
Instruction for use

YOU SHOULD READ THE MANUAL CAREFULLY BEFORE USING, AND KEEP
THE MANUAL WELL
Contents
Precautions-safety guide…………………………………………… Page1
Overview of heater design and Installation……………………… Page2
Dimension technical parameters…………………………………… Page3
Technical parameters ……………………………………………… Page4
Prepare before using………………………………………………… Page5
Operation……………………………………………………………… Page6
Working principles…………………………………………………… Page7
Maintenance……………………………………………………………Page8
Introduction of the construction…………………………………Page9、10
Trouble shooting guide and the solution…………………………Page11

【Precautions-safety guide】page1
For your own and other’s safety please read this USER’S MANUAL and follow its
instructions carefully.
▲Danger
1、The use of gasoline is strictly prohibited, it is high volatile fuel that can cause an
explosion or uncontrolled flames.
2、Never use the heater where flammable vapors may be present, there is danger of
explosion, fire and burning。
3、Always provide adequate ventilation during the use. Only use the appliance in well
ventilated area, the air must be regular exchanged during the use (two times/one
hour），inadequate burning caused by oxygen shortage can cause carbon monoxide
poisoning。
▲Warning
1、Don’t use spay products at the location where the heater is used，the gas from the
spay tin can cause danger of fire and explosion.
2、Don’t use the appliance in place with combustible powder（wastepaper, wood crumbs,
fibre scraps），if these powder are sucked in the heater and heated up, flake and
spark may be ejected out and cause fire and burning danger.
3、Never block air inlet or heating part，it can cause abnormal burning and fire.
4、Never modify the heater, alteration may cause malfunction and fire, is very
dangerous.
5、Don’t expose the appliance to rain or snow, never use it in humidity places either.
Pull out the plug before the routine maintenance and examination.
▲Pay Attention
1、In order to prevent fire while in operation, please don’t place articles neat the
heater. Keep all combustible materials away from heater. Minimum clearances:
Outlet(front) 3M，air inlet(rear)2M，top 2M，side 2M.
2、While in operation，make sure that the ground surface does not overheat，

overheating may cause fire.
3、Do not fill fuel tank while heater is in operation, make sure the heater stops and the
flame is out. Filling while in operation may result causing fire。
4、Before use the appliance, make sure that the voltage and frequency on site is in
accordance with the ones shown on rating plate.
【Overview of heater design】page2
A．Hot air outlet B. Upper shell C. Rear handle D. Front handle E. Cord wrap F.
Lower shell G. Fuel gauge H. Fuel cap I．Wheel J. Side cover K. Digital
temperature display L. Thermostat knob M. Power switch N. Lower tube frame
O. Fuel tank P.power cord Q. Rear grill
【Assembling wheels and tube frame】
1、insert the wheel axle to the corresponding hole of lower tube frame，set bushing G at
the two ends，slide the wheel F over the wheel axle H，put on wheel cap E。
2、Put the heater body on the lower tube frame B, make sure the 4 holes of handle
frame point towards the corresponding 4 holes on the lower tube frame respectively.
3、Insert screws J in the holes，place flat washers D under the lower frame B and tighten
the hexangular screw C。
4、Insert other screws in the holes respectively and use a screw driver to tighten them
by the same way.

【Dimensions】Page3
No.
DH-20
DH-30
DH-50
A
740mm
940mm
1020mm
B
650mm
820mm
940mm
C
210mm
230mm
230mm
D
380mm
420mm
400mm
E
120mm
160mm
160mm
F
740mm
810mm
980mm
G
540mm
640mm
620mm
H
550mm
640mm
630mm
I
270mm
320mm
360mm

J
400mm
460mm
500mm
【Technical parameters】page4
OUTPUT KW
Btu/h
Kcal/h
20
69000
17200
MOTOR POWE W
230
PRESS PSI
4
Continous using time hr
12
OUTPUT AIR m3/h
595
N.W KGS
18
TANK CONTENT L
19
Voltage,frequency,currency,
AC230V 50Hz 1.2A
FUEL
Diesel oil,
kerosene
BURNING OIL L/hr
2
SIZE mm
740x400x540mm
OUTPUT KW
Btu/h
Kcal/h
30
102500
25800
MOTOR POWE W
230
PRESS PSI
5
Continoususing time hr
14
OUTPUT AIR m3/h
720
N.W KGS
21.5
TANK CONTENT L
38
Voltage,frequency,currency,
AC230V 50Hz 1.2A
FUEL
Diesel,oil,
kerosee
BURNING OIL L/hr
3
SIZE mm
940x460x640mm
OUTPUT KW
Btu/h
Kcal/h
50
170600
43000
MOTOR POWE W
340
PRESS PSI
6
Continous using time h
14
OUTPUT AIR m3/h
1100
N.W KGS
27
TANK CONTENT L
56
Voltage,frequency,currency,
AC230V 50Hz 1.5A
FUEL
Diesel,oil,
kerosee
BURNING OIL L/hr
4.5
SIZE mm
1020x500x620mm

【preparation before the operation】page5
1、Never use high volatile fuel such as gasoline etc；
2、Only fill the fuel tank when the heater stops running and the flame goes out；
3、Please use No JIS1 kerosene or frostbite-prevent light diesel，never use
degenerative, impure kerosene or diesel；
4、When you fill the fuel tank, the tank filter must be installed；
5、When kerosene or diesel touches human body please wash with soap immediately,
to prevent potential skin inflammation；
6、The burner surface is very hot just after flameout, so never touch it with hand or let
oil pump come in touch with the burner, to prevent scalding or some other injure.
◆When there is no fuel (kerosene or diesel) in the tank:
How to fill the tank：
1、Make sure the power plug is removed from the power source and the power switch is
in OFF position“0”；
2、Place the appliance on a stable and level ground, remove the fuel cap and fill the fuel
tank with fuel filter installed. Do not overfill your heater, see the full level position as
shown in under figure；
3、Check if there is water or waste in the fuel tank, clean the tank if it is dirty；
4、Fill kerosene or diesel in fuel tank with oil pump only when the fuel filter is proper
installed, after the filling turn the cap clockwise and tighten it.
Figure (fill the fuel tank)
A. Fuel tank cap B. Fuel gauge
◆When there is some fuel (kerosene or diesel) in the tank

Attention
1、Only check the appliance after flameout and removal of the power plug from power
source；
2、Before the ignition make sure there is no oil leakage, when oil leaks please don’t
use the appliance and contact your dealer；
3、please check the fuel tank interior, clean the tank if there is water and waste in the
tank.
【Operation】page6
Warning by ignition：
1、check the fuel tank and make sure there is enough fuel in it；
2、do not close your face near the heating part after the ignition, keep the safe
distance, min. 3 meter front from hot air outlet，top 2 meter, left and right side more
than 2 meter.（see under figure）
3、stop using the appliance when there is smoke or strange odor omitted；
4、make sure the heater is ignited before you leave it.
Safety clearances
Ignition：insert the plug in the socket，put the power switch to position“1”, the indicator
lights up, It would ignite automatically when the setting temperature is higher than
ambient temperature in LED digital temperature display.
If heater does not start, turn power switch to “0” and then to “1” position. if the heater
still does not start after three times please contact your dealer.
Attention：while the heater is operating, never let the floor ground overheats to prevent
causing fire.

◆Flameout
Pay attention 1、when you shut off the heater, make sure the flame is out before you
left the appliance.
2、Put the power switch to position“0” waitting fan stop working and
the indicator extinguishes, then remove the plug from the socket
3, DH-50 , has time-delay function , when heater off, fan will keep
running 90s to make heater cold , then stop .
◆safety device page7
Flame-out protection：Utilizes a photocell to monitor the flame in burn chamber during
normal operation.The photosensitive resistor will become infinite big , cut off
Electrovalve Assy ,will stop offer oil automatic.
Electrical power breakdown protection：when the power breaks down the heater
stops working without the plug being removed from the socket . When the power is
recovered, the indicator will light but the heater will not work. Please press the power
switch to start up the heater.
【working principles】
A．Combustion chamber B. Spark plug C. Fan blade D. Motor E. Pump
F. Air intake filter G. Air output filter H. Fuel tank I. Controller J. Air inlet pipe
K. Flame steady plate L. Oil nozzle M. Oil sucking pipe
Description of working principles：

Open the fuel cap to add kerosene/diesel in the tank. put on the fuel cap and plug the
power cord in the socket. Turn the power switch on to position “1”, motor start working
and the digital temperature display light up at this time. The left display window is
setting temperature and right one is room temperature. It would ignite automatically
when the setting temperature is higher than room. It begins to work, the spark plug
ignites. This heater is equipped with an electric air pump that forces air through the air
line connected to the fuel intake and then through a nozzle in the burner head. When
the air passes in front of the fuel intake it causes fuel to rise from the tank and into the
burner nozzle. This fuel and air mixture is then sprayed into the combustion chamber in
a fine mist. The air blew by the fast turning fan blades 1.enters the flame steady plate
and the burner, supplies additional oxygen to the burning and makes the burning more
sufficient and takes away the heat from the burner interior to outside2. enters the heat
insulation layer of A, takes away the heat from the insulation layer，so that the burner
surface will not overheats.The spark plug stops working after 12s of sparkling.
【Maintenance】
Notice 1、Before the maintenance shut off the heater and pull out the plug；
2、Never maintain the heater with fuel in tank.
◆check the fuel tank
When there is waste and water in the tank, clean and drain the fuel tank.
How to drain the fuel tank（see below figure）
1、put the heater on the working table and place an oil container under the fuel tank；
2、use a spanner to loose the drain screw und release the water and waste inside the
tank；
3、after draining tighten the drain screw again and wipe clean the left water and oil.
drain the fuel tank

【Introduction of the construction】page8
◆burner head
A. Burner assembly
B．Air inlet pipe
C．oil inlet pipe
D．flame steady plate
E．high voltage line
F．spark plug
◆spark plug the distance between the electrode should be in scope of 4-5 mm, to
get the best ignition result.
Gap between the electrode：4-5mm
◆assembling the oil nozzle
A．Oil nozzle
B．Nozzle core
C．Seal ring
D．Flame steady plate
E．Air pipe fitting
F．Oil pipe fitting
◆Pressure adjustment
A. Minus screw driver

B．Pressure adjustment screw

◆Air pump page9
By maintenance the air pump must be proper assembled, to prevent low air pressure or
air leakage.
A. Pump blade
B. Pump cover
C. Air intake filter
D. Pressure cover
E. Air inlet guard
F. Air outlet filter
G. Pump core
H. Connecting part
I. Pressure gauge
◆the match between the pump body and pump core
The four pump blades were set in the four grooves of the pump core，which move
centrifugally clockwise in the pump，the cooperation gap between the pump enclosure
and the pump core should be kept in 06~0.08mm，to ensure that the air pump can
produce sufficient pressure.
A．pump body
B . gap 0.06~0.08mm
C．pump core
D．screw
E．pump blade
◆fixation of the fan blades
Install fan blade on motor shaft und use set screw to tighten them firmly
A．fan blade
B．motor shaft
C．set screw

【Trouble analysis】page10
Before you send out the heater for repair please check the following points first, they
are not faults：
Problem
reason
Odor, smoke or spark omitted by the
first use
It is normal. Because at the beginning
there are air and dust mixed in the
burning. Wait for some time they will
disappear.
Ignite when he first use or when the
fuel was used out, strange sounds,
odor, white smoke
Air is mixed in the pipe, the phenomenon
will disappear when the air in the pipe
was pressed out.
Strange sound while igniting or
flameout
The metal parts of the heater expand and
contract cause the noises. normal
Fire appears out of the outlet while
igniting. Sparkle
Fuel and air of last time were left in the oil
pipe of the nozzle, so the air and fuel are
not proper mixed, the burning isn’t
continuous. Sparkle is caused by the left
carbon powder, is also normal
【trouble shooting guide--reason and solution】
Problem
Possible reason
Solution
Heater stop
working after
running for a
short time ,
E1 displayed
on the screen
1. Pressure not correct
2. Inlet, outlet or the cotton of
the air filter is dirty
3. Diesel filter is dirty
4. Fuel oil nozzle is dirty
5. Photocell lens is dirty
6. Incorrect installation of the
photocell
7. Damage of the photocell
8. The abnormal connection
between main PCB and the
photocell .
1. Adjust the pump pressure
2. Clean or exchange a new air
filter
3. Clean or exchange a new fuel
filter
4. Clean or exchange a nozzle
5. Clean or exchange a new
photocell
6. Adjust the position of the
photocell
7. Exchange the photocell
8. Check the all electrical
connection

The heater do
not work, or
motor stop
working after
a short time,
E1 displayed
on the
screen .
1. Fuel exhausted
2. Pressure not correct
3. Spark plug or the air lock is
corroded
4. Fuel filter is dirty
5. Fuel nozzle is dirty
6. Fuel and fuel tank is wet
7. The connection between
PCB circuit and transformer
is abnormal
8. The ignition pin and ignition
transformer is not connected
9. Defective igniter
1. Fill the fuel tank
2. Adjust the pump pressure
3. Clean or exchange the spark
plug
4. Clean and exchange fuel filter
5. Clean or exchange the nozzle
6. Rinse the fuel tank with fresh
kerosene
7. Inspect all the electrical
connection
8. Connect the ignition pin and
the spark plug
9. exchange the igniter
LED display
shows “E2”
Damage or fall off of the
temperature probe
Exchange the temperature probe
Poor
combustion /
Too much
smoke
1. outlet or the inlet cotton of
the air filter is dirty
2. Fuel filter is dirty
3. Poor quality of fuel
4. Air pressure too high or too
low
1. Clean or exchange Air inlet
2. Clean or exchange Fuel filter
3. Be sure fuel is not contaminated
and old
4. Adjust air pressure
Heater can
not turn on
and LED
display show
“- -”
1. The temperature sensor has
overheated
2. PCB fuse is burnout
3. Temperature sensor is not
well connected with the PCB
panel
1．Turn off power switch and turn
on The power 10 minutes later after
the heater is cooled down .
2．check and replace the fuse
3．Check the all electrical
connection .

一、 产品概述：
本产品是我公司广泛吸取国内外多种暖风机产品的成功经验，精心研
制而成。便携式空气暖风机可根据适用场所不同进行划分，适用于大型结构
工程、建筑工地、道路维修、停车场、养殖场、蔬菜大棚和公共设施。
二、 性能特点：
1、配有光电保护装置；
2、配有过热保护装置，过热停机。
3、可与外携温控器连接使用。
4、结构紧凑，使用方便，操作简单。
5、良好的通风隔热装置，长时间使用外壳不会过热；
6、全自动电子点火。
7、原料为柴油和煤油。
8、气体雾化燃烧，燃烧效果好，强制热风型加热，加温迅速，效率高。
9、大容量油箱，可以保证连续运行 12 个小时。
10、 油箱带有放油口和油位显示。
三、 技术参数：
型 号
DH-20
DH-30
DH-50
额定电压
220V ~
220V ~
220V ~
额定频率
50Hz
50Hz
50Hz
输出热量
20000W
30000W
50000W
净 重 KG
17
20.8
27.4
毛 重 KG
19
22.8
33
包装尺寸（mm）
810*350*420
880*415*470
1080x500x580
点火方式
自动
自动
自动

燃料类型
煤油或柴油
煤油或柴油
煤油或柴油
用电功率
250W
250W
350W
耗油量
1.65kg
2.2kg
4.2 kg
输出热空气
595 m³/h
720 m³/h
1100 m³/h
四、 使用说明：
1. 此取暖气必须与相应电压、功率的插座相连接。（220-240V~50Hz ）
2. 确保此取暖气与地面的适度接触。
3.当室内温度达到后,停止加热.当温度下降后,发热体会自动开始工作.现在
产品的发热体会自动的停止或开始工作,来保持室内的温度
4.不使用时，请将开关旋止关位置，并拔下电源线插头。
五、 清洁保养：
气候转暖，暖风机停用后，应拔去电源线。作清洁保养，可用软布或软
毛刷擦净箱体，见有污渍，可用湿布沾少许洗洁精擦除，不可用酒精、甲笨、
汽油等化学溶剂擦洗，以防损伤箱体表面涂层。
注意：待完全晾干后，装入原包装箱，置于干燥通风处保存。
六、 电气原理图：

七、 注意事项：
1、务必确保遵守此暖风机相关使用说明以及警告事项，否则将会造成一氧化
碳中毒，窒息，烧伤，爆炸，火灾的危险 进而导致财产损失，严重人身
伤害，甚至死亡等后果。
2、 暖风机应放置在平整的地面上，以免使用中跌倒。
3、 严禁在暖风机上烘烤衣物，严禁将物体覆盖机体。
4、 使用过程中，严禁将手指或导电物伸入机体内，以防触电。
5、暖风机使用中如出现异常情况，应立即关机切断电源，待机体冷却后查明
原因，排除故障后才能开机使用。
6、暖风机在无人看护时，应关断开关，并拔下电源线。
7、禁止将器具直接安装在电源插座下面。
8、如果电源软线损坏，为避免危险，必须由制造厂或其维修部或类似的专职
人员来更换。
9、因为加热器的覆盖或不正确的放置会引起火灾，故不得利用带有可自动接
通电源的程序器、定时器或任何其他装置来使用本加热器。
10、进出口风道严禁覆盖，保养时必须切断电源。
本产品使用必须注意将此暖风机暴露在喷泉，雨水，滴水环境或风中。
11、此手册中提到的这款取暖气只能在通风良好的环境中使用.
12、每个功率状态下工作的时候持续的通风量都要达到 25 平方厘米。这样从
地板到高空的整个使用空间的平均的最小输出将达到 250 平方厘米。
13、安全信息
危险：此处所指的将是非常危险的情况，若不避免将会造成严重伤害或是死
亡。
警告：此处所指为潜在危险的情况，若不可避免将会导致严重伤害或死亡。

谨慎：此处指潜在的危险情况，若不避免将会导致轻微或局部伤害。
这是一种燃油，喷火以迫使空气加热的暖风机。它的设计主要用于对建设中
或维修中的建筑进行临时加热。直接加热的意思是暖风机氧化仓产品直接进
入加热空间，氧化效能达到 98%，但是氧化产品中也会包含少量的对人体有害
的一氧化碳。
危险：一氧化碳中毒将会导致死亡。
在通风良好的情况下，人类能够忍受少量一氧化碳。如果不根据此使用手册
要求选择通风良好的环境使用此暖风机，将会导致死亡事故的发生。少量一
氧化碳的不良影响类似于患流感的症状。通风效果不良会给人带来以下征兆：
头疼，头晕，眼睛鼻子有灼热感，嘴干，喉咙疼以及恶心等症状。
强烈建议此暖风机使用煤油，然而当无煤油时，也可使用 1#或 0#的柴油。但
是强烈建议使用柴油时不可以像使用煤油时燃烧那么干净，必须留少量剩余
柴油以防止有新鲜空气进入加热空间而是的油箱膨胀。
禁止在居民区或是通风不良好的封闭空间使用此暖风机。
警告：火灾，烧伤，中毒及爆炸等危险。务必保持 建筑材质，纸张，纸板箱
等可燃物与此暖风机之间有此说明书上建议安全的距离。禁止在包含有汽油，
有溶解能力的产品，涂料稀释剂，微尘，挥发性物质或是风媒的可燃物或者
任何不知名的化学物质 的空间环境使用此暖风机。这是一种不会释放气体的
手提式暖风机，它使用的是所在环境的空气（氧气），这就要求燃料的氧化
充分以及环境通风效果良好。
注意使用柴油的暖风机将需要更加频繁的维护保养工作。
---禁止在此暖风机运行期间或油箱未冷却时进行添加油的行为。
---保持所有易燃物远离此暖风机。

---禁止堵塞此暖风机的出气口（后）或入气口（前）。
---禁止使用管道在此暖风机前后工作。
---禁止在暖风机未冷却时进行移动或提起工作。
---禁止油箱中有油的时候运输此暖风机。
---如果配备有自动调温器，此暖风机随时可能进入工作状态。
---应该始终将此暖风机放在稳定的水平面上。
---保证使儿童或动物远离此暖风机。
---大量储油箱与此暖风机，点火器，手提式发电机，或其他火源的距离至少
保持 25 英尺远。
---禁止在有易燃蒸汽的环境使用此暖风机。
14、使用此暖风机必须有良好的通风环境---每 100000 英热值的热效率至少
保证 2800 平方厘米的户外新鲜空气。
15、禁止在此暖风机中使用汽油，苯化学物，燃料稀释剂或其他混合油燃料，
这些将会引起火灾或爆炸的危险。
使用安全距离