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Table of Contents
KDB-203/253/353 STC
Read the instructions fully before installing or using the appliance.
CONSUMER, retain this manual for future reference purposes.
illustrations, functional steps and technical data without prior notice.
All product images are provided by the manufacturer and are for reference purposes only.
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Table of Contents
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Summary of Contents for Navien KDB-203 STC
- Page 1 KDB-203/253/353 STC Read the instructions fully before installing or using the appliance. CONSUMER, retain this manual for future reference purposes. illustrations, functional steps and technical data without prior notice. All product images are provided by the manufacturer and are for reference purposes only.
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Page 3: Table Of Contents
The structure and its description How to install Before operating the boiler How to use Safety device Routine checks and maintenance How to replace the parts Electric wiring diagram Trouble shooting Specifications... -
Page 4: The Structure And Its Description
The structure and its description The Structure of the boiler Model : KDB-203STC Operation and display panel POWER : displays the status of power on /off KDC-104CE COMBUSTION : displays the status of the burner combustion. PUMP : displays the operating status of the circulation pump. HOT WATER : displays the operating status of heating water. - Page 5 The Structure of the boiler Model : KDB-253STC Operation and display panel POWER : displays the status of power on /off KDC-104CE COMBUSTION : displays the status of the burner combustion. PUMP : displays the operating status of the circulation pump. HOT WATER : displays the operating status of heating water.
- Page 6 The Structure of the boiler Model : KDB-353STC Operation and display panel POWER : displays the status of power on /off KDC-104CE COMBUSTION : displays the status of the burner combustion. PUMP : displays the operating status of the circulation pump. HOT WATER : displays the operating status of heating water.
- Page 7 The Structure of the boiler Model : KDB-203/253/353 STC The descriptions of the name RESET BUTTON : a switch for the restart when the “MISFIRE ”, “OVERHEAT” lamp is on POWER BUTTON : a device for the boiler’s power on/off ROOM THERMOSTAT : a device for controlling the temperature of the heating water.
- Page 8 User’s Manual for Room Thermostat(DR-2ND, DR-2NDP) Before Usage Thank you very much for purchase this room thermostat(tele-room controller) You had better fully read this user's manual. It can give you more convenient and warm life. Contents Check point for safety Check point for fixing.
- Page 9 Fixing & Wiring On the wall To the socket on wall 1. Connect firmly the room controller wire (2 Line) from the boiler, to the room controller port in the back of the room controller. 2. Connect firmly the telephone wire to the telephone port in the back side of the room controller. 3.
- Page 10 Room Controller Model : KDB-203/253/353 STC 1. Continuous : Press this button to heat the room quickly. Press the continuous button( ), lamp( ) will on. 2. Outgoing : Boiler will stop and the frozen-up preventer will operate. Press the outgoing button( ), outgoing lamp( ) will on. 3.
- Page 11 8. Usage of telephone If you run the boiler with telephone, the boiler will run for 30min. then remain in outgoing function and out of run lamp automatically. You can control the working & stopping of boiler and timing of bell when you use interphone(inside) and telephone(telephone and cellular phone).
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Page 12: How To Install
How to install Choosing of the installation place For the place to install the boiler, choose the place possible to do the accompanying works, such as water supply works or electric works. For the place to install, choose the place conformed to the installation standards of the boiler and the construction act or the code of each city or municipality. - Page 13 The example of a standard installation Front View Ground View Inflammable material side Inflammable material Wall nonflammable Exhaust inhale pipe Exhaust / inhale pipe insulation Over 20cm Ground When extending the aluminum flue duct When the length of the flue duct is less than 2m, use the flue duct of φ75mm in diameter. When the length of the flue duct is between 2m and 5m, use the flue duct of φ100mm in diameter.
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Page 14: Before Operating The Boiler
Before operating the boiler Fuel It is essential to use only kerosen or light oil. (Don’t use gasoline, alchohol) Store in the place where there is no effect of oil, fire, rain, and keep out of the sun. It is better to use kerosene when the temperature goes down below –5˚C In winter, don’t use the light-oil for summer. - Page 15 Checking points before starting up Check out if or not oil leaks in the connecting part of the oil pipe. Checking points before starting up Put the surroundings of the boiler in order and don’t put the flammables near the boiler. Check out whether the ignition and the combustion is normal.
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Page 16: How To Use
How to use How to exhaust Be careful that the oil tank may not run out of oil completely. In that case, even though oil is supplied, air may get in. As a result, ignition failure or operation failure may occurs. Untighten the screw for exhaust in the oil filter by a screwdriver, the air goes out. - Page 17 Now press the reset button on the panel repeatedly, and the oil flows out. Lock the valve and press the reset button again, and the boiler gets ignited. In case that after removing air completely, the ignition has failed repeatedly about five times, contact the sales agency or the commercial agency.
- Page 18 How to use Now press the reset button on the panel repeatedly, and the oil flows out. Lock the valve and press the reset button again, and the boiler gets ignited. In case that after removing air completely, the ignition has failed repeatedly about five times, contact the sales agency or the commercial agency.
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Page 19: Safety Device
Safety device Combustion safety device When it doesn't ignite even with the power button “ON” or it gets extinguished due to running out of oil, the FLAME Detector(Cds) gets to work and stops the operation. Low water level blocking device If water is insufficient in the boiler, it interrupts the operation of the boiler with the power cut off. -
Page 20: Routine Checks And Maintenance
Routine checks and maintenance. Points to be checked once or more year Check out whether the flammables are near. Keep cleaning all the time and don’t let the dust accumulated. Check out whether oil leaks from, is stacked on, or soaks into the oil tank, oil pipes, the body of the boiler, etc. -
Page 21: Cleaning The Boiler
Cleaning the boiler Much soot accumulated inside the boiler will reduce the life and efficiency. At least once a year, clean the boiler inside. Cleaning the oil filter In case that the oil filter gets dirty, stop operating, lock the oil valve, and remove dust or rust accumulated below the oil cup. - Page 22 Cleaning the flame detector If the light-receiving surface(sensing surface) gets darkened with soot, the bad sensitivity cause the wrong automatic operation. You can pull out the flame detector(black) which is attached in the lower part of the burner. Wipe the glassy surface of the flame detector with a scrap and fix it in its opposition.
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Page 23: How To Replace The Parts
How to replace the parts There is no parts which gets wear in a short period, but when the replacement of the parts is needed, consult to out sales agency or commercial agency. There is no parts which gets wear in a short period, but when the replacement of the parts is needed, consult to out sales agency or commercial agency. -
Page 24: Electric Wiring Diagram
Electric wiring diagram Model : KDB-203/253/353 STC... - Page 25 Electric wiring diagram Model: KDB-203/253/353 STC (DHW Priority Model)
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Page 26: Trouble Shooting
Trouble Shooting Happening Cause Solution methods Please contact your local shop and distributor for other unclean matters. -
Page 27: Specifications
Specifications HEATING OIL (LIGHT OIL, KEROSENE OIL) 220,50/60 The specification in this operating manual can be changed for improvement without prior notice. - Page 28 memo...
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