KyungDong KDB-181 KCA User manual

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1. General Warnings -------------------------------- 1
2. Safety Warnings---------------------------------- 2
3. Names of Components--------------------------- 8
4. Proper Operation-------------------------------- 10
5. Advantages of the Product----------------------- 27
6. Checkpoints before Making Repair Work Order----- 29
※ This User’s Manual can be modified without prior notification for product
quality improvement purposes.
Contents

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General Warnings
This instruction booklet is considered an integral part of the product and must
be delivered to the user together with the appliance.
It must follows the appliance also in every passage of property.
Store the booklet in a safe place and read it carefully before using the appliance
as it contains important information to ensure safe installation, operation and
maintenance.
This appliance must be installed following the National and the Local law and
standard in force.
Installation and maintenance must be performed according to National and
Local standard in force and according to the manufacturer’s instruction and by
qualified personnel skilled in the specific sector as foreseen by the law.
Incorrect installation can cause damage or physical injury and the manufacturer
declines all liability for failure to observe instruction and standards.
In particular maintenance must be performed by qualified personnel.
In this case, an Authorized Manufacturer Service Centre represent a guarantee
of professional and qualified services.
The appliance must be used according to the applications as specified in the
design.
Any other use has to be considered improper and therefore hazardous.
The manufacturer declines all contractual or not-contractual responsibility for
damages caused by incorrect installation and incorrect operation and failure to
observe the relative instructions.
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Safety Warnings
The cautions issued by this user’s manual include critical information for the
safety while using the product. When the user fails to adhere to the following
requirements can cause death, serious damages, and a great property loss.
For safety, according to the level of danger, we have indicated by ‘Danger’,
‘Warning’, ‘Caution’ and the definitions for these terms are as follows :
1) The definitions of the symbols indicated on the product and user’s manual are as
follows :
This symbol indicates “Caution” for bodily injury under particular conditions.
This symbol indicates “Stop” for possible bodily injury or property damage.
This symbol indicates a “Must” follow sign.
2) Since the specified warnings and cautions in the user’s manual are not all inclusive
cautions when using the product, more care is necessary for safety when using the
product.
Please read and understand this user’s manual completely for safe use of this product.
When disposing of the product, it must be done through the installer.
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Please check for gas leaks often.
 In case of gas leakage leading to an explosion that
can cause serious bodily injury or property damages.
Do not place any flammable items or materials
near the boiler.
 If there are any flammable materials such as
gasoline, they may cause an explosion or fire.
Do not leave any combustibles near the boiler.
 If there are any combustible materials such as
plastic near the boiler, they may cause a fire.
When the boiler is operating, open at least
one valve of the distributor.
 When operating the boiler with the distributor valve
closed, there is a possibility for fire and damages to
the boiler due to overheating.

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Please use after checking the type of gas
used.
 When gas other than the gas type specified on the
lower portion of the right side of the boiler, a fire or
explosion may occur due to improper combustion.
Please do not touch the flue or pipe while the
boiler is turned on and operating.
 While operating, the flue or pipe are extremely hot
and can cause burns.
Please do not use the boiler for any other
purpose than for heating and hot water.
 If used for drying laundry, a fire may occur.
 If used for cooking, some harm to the person may
occur.
Please request for any gas pipe repair at the
Gas pipe professional installers.
 Any such repair by non-accredited gas pipes
installer can cause gas leakage and accidents.

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Please inquire about product installation,
transfer, and additional Repair to the
dealerships where you purchased the product.
 Improper installation of gas boiler may cause an
accident.
Please use caution when utilizing the hot
water.
 When using the hot water, water at a high
temperature may flow suddenly depending on the
opening of the valve. Thus, use care not to burn
yourself when utilizing hot water.
When the boiler takes air from the place
where it is installed, be sure that the opening
ventilation are open.
 Any malfunction in the ventilation may cause
improper combustion that may lead to Carbon
Monoxide (CO) gas poisoning, a fire, or shorten
product use life.
Please do not use water or wet cloth to clean
the boiler.
 This may cause an electric shock.

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Please do not operate the boiler with wet
hands.
 This may cause an electric shock.
When the fuse is broken, do not replace the
fuse on your own.
 This may cause an electric shock.
 Please request a service repair.
Please leave open distributor valve and gas
shut-off valve when not at home for two to
three days during the winter.
 For freeze guard, boiler must be left on. If the boiler
distributor valve and gas shut-off valve are closed
then the boiler will not operate properly to cause
freezing leading to damages to boiler and pipes.

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Please completely drain the water from the
pipes when not in use for a prolonged period.
 Pipes may freeze when not in use for a prolonged
period(Draining Method Refer to Page 15).
Please submit a request for inspection of your
unit at least once a year.
 Please receive A/S regular inspection at least once
a year from the dealer where you purchased the unit
for safe and lengthened use of your boiler.
 Please place the unit in a location where there is sufficient space for regular inspection
and repair.
 For repair and inspection, there should be at least 600mm of space in front of the unit.
Please should be prepare water discharge hole(Device) at
boiler installation.
Recommended items

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Names of Components
Pressure Gauge : Indicates the pressure inside the heating pipes. In case the pressure
falls below 0.5bar open the water replenishing valve to automatically refill the water to
0.5~1.5bar.
Water Drain : For a vacation or not at home for a prolonged period of time, to guard
against freezing, the water is excreted through this part.
Pressure Relief Valve : When there is excessive pressure inside the heating pipes, it
automatically excretes the water inside the boiler to maintain optimal pressure level. In
case of long absence from home, to guard against freezing, the water inside the boiler
should be drained.
Heating Water Filter (Strainer) : Improve the heating function by removing the
contaminants inside the heating pipes using an inside filter. When heating is not done
properly, remove the clip and clean the filter(see page 21).
3
KDB-131/161/201 GOM

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 Pressure Gauge : Indicates the pressure inside the heating pipes. In case the pressure
falls below 49kPa (0.5kgf/cm2), open the water replenishing valve to automatically refill the
water to 49~147kPa (0.5~1.5kgf/cm2).
 Water Drain : For a vacation or not at home for a prolonged period of time, to guard against
freezing, the water is excreted through this part.
 Pressure Relief Valve : When there is excessive pressure inside the heating pipes, it
automatically excretes the water inside the boiler to maintain optimal pressure level. In
case of long absence from home, to guard against freezing, the water inside the boiler
should be drained.
 Heating Water Filter (Strainer) : Improve the heating function by removing the contaminants
inside the heating pipes using an inside filter. When heating is not done properly, remove the clip
and clean the filter. (see page 21)
KDB-251 GOM

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Proper Operation
1
Check the gas type
When using the unit for the first time
or moved, check whether the type
of gas specified in the product and
the supplied gas match(LPG/Natural
Gas).
The type of gas is indicated on the
data plate located on the lower right
portion of the boiler.
2
Check for power supply
Please check whether the boiler is electrically
filled properly.
3
Check the water supply valve
Please leave the boiler water supply valve in
the open position all times of functioning ;
for water replenishing (up to the boiler will
reach around 1.0 bar in the pressure gauge)
and for domestic hot water production.
4
Before operation

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4
Check the gas valve
Please check to make sure the Gas
shut-off valve connected to the boiler
is open.
5
Check each room valve connection
Please check to make sure each room
valve connected to the boiler is open.
Warning
1
Caution for Gas Leaks
Please check for gas leak on the gas
connection portion frequently with soapy
water(if any bubbles form then there is a
gas leak contact the nearest gas supplier
immediately).
Please inspect the unit after completing a
repair or exchange of the gas pipes and
gas controller before operating the unit.
When in Use

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Exposed pipes must be insulated.
Please insulate the exposed pipes. It is safer
to protect the pipes exposed to outside
elements with insulation material. Particularly,
water supply pipe and hot water pipes must
be insulated.
Please leave open the distributor valve and Gas shut-off valve
even when not using the unit for 2~3 days during the winter.
Please leave switched-on the boiler and open
the shut-off gas valve when you leave home
for 2~3 days of outing to facilitate freezing
guard device for effective and convenient
operation.
At that time, do not switch off the boiler from
the power supply by the main switch upstream
the unit.
Also, to prevent any damages to the boiler and
the pipes, leave at least one distributor valve
opened.
Check each room valve connection.
Please check whether each room valve
connected to the boiler is open.
Cautions to Prevent Freezing during the Winter Months
When not using the unit for short-term
(
2~3 days)

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1
Switch-off the main switch upstream
the boiler.
Please switch-off the master switch upstream
the boiler.
2
Shut-off the Gas Supply.
Please close the Gas shut-off valve
3
Shut-off the Water Supply.
Please close the water supply valve.
4
Exhaust of heating water and hot
water.
 Open the pressure relief valve (close air
type) and drain valve on the bottom of
the boiler with a screwdriver to drain the
heating water from the boiler.
 Open all the distributor valves in the room
to drain all the water.
 Please open the hot water valve to drain
the hot water from hot water pipes.
Long-Term Non-Use
(Water Draining Method)

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1
Switch-off the power supply.
Please switch-off the master switch
upstream the boiler.
2
Shut-off the gas supply.
Please close the gas shut-off valve.
3
Please keep the outside of the
boiler unit clean.
About 1 hour after the switching-off of
the unit, please clean the unit with dry
cloth.
4
When there are contaminants on
the unit.
If the rooms are not as hot as the other
times, this indicates there are contaminants
present inside the pipes. Please clean the
heating filter(cleaning method : heating filter
cleaning method see page ahead).
How to maintain the Unit

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1. There are two methods of heating.
First is the setting of the heating water temperature in the boiler.
After the adjusting of the heating water temperature in to the boiler, it detects
automatically that the temperature in the installation stay ad the set value.
It is necessary to set the temperature at 60~70℃ during Spring and Fall and
70~80℃ during winter.
Be careful ; because some Country doesn’t permit to use this method, but impose
to use the room thermostat.
Please follows the National and the Local law and standard in force.
2. By monitoring the indoor temperature to heat the house.
Install a room thermostat and set it to the desired temperature.
The temperature in the house will stay at the value set in the room thermostat.
The temperature in the installation will stay at the value set in the boiler.
It is necessary to set the temperature at 60~70℃ during Spring and Fall and
70~80℃ during winter.
3. By monitoring the indoor temperature and the outdoor temperature.
Install the external sensor to the house and the room thermostat.
The temperature in the house will stay at the value set in the room thermostat.
The temperature in the installation will stay at the value automatically adjusted by the
boiler.
This value will be high with a low external temperature; will be low with a high
external temperature.
If it’s necessary, this relation between the temperature of the installation and the
external temperature may be adjusted in relationship to the particular kind of heating
system and of the insulation of the house.
This adjustment may be done by the authorised service man.
Please look at the paragraph in the “installation manual”.
Proper use of the room thermostat
How to set the room temperature

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Control Panel –Symbols and Functions
s burner is
switched on.

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1Switch-on the main switch upstream
the boiler
Please switch-on the master switch
upstream the boiler.
On the display it appears “Off”
2Switch-on the boiler.
Pressing for more than 1 second it’s
possible to change the working mode of
the boiler from OFF to ON and vice versa.
When the working mode is OFF the
display shows OFF.
3Choice of the working mode : “Summer”or “Winter”
When the boiler is in ON position, pressing
for less than 0.5 second, it is possible
to set the boiler in the “Summer” or in the
“Winter” working mode.
It is possible to check the existing
working mode looking to the display.
In Summer position it appears the symbol
In Winter position it appears the symbol
Start –Switching-on of the boiler