Kiturami KRPB-20A Installation instructions

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Installation & Operation Instructions
KRPB-20A
Wood Pellet Burner

The actual product may differ from
the images in the manual.
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Table of Contents
Major Safety Instructions ........ 3
Construction of the Product .... 4
Product Characteristics and
Specifications ..................... 5
Names of Components .......... 6
Installation ............................. 8
Applicable Boilers
Requirements for the Boiler Room
How to Assemble the Burner
Fuel Storage Device
Connection of Electric Apparatus
How to Install the Feeder
How to Install the Chimney
Aux. Controller(HOT-4000N)..... 10
Names and Description of Parts
How to Set Fuel Feeding
How to Set Initial Fuel Feeding
How to Set Operation/Stop time during Fuel
Feeding
How to Operate the DC Fan
Main Controller(PW-140) ........ 15
Electronic Diagram
Room Controller(CTR-5700PLUS)..... 16
Names and Description of Parts
Indoor Function
Reservation Function
Outing Function
Bath Function
Trial Run ............................. 21
Sequence of Trial Run
Precautions for Operation........ 22
General Precautions
Precautions for Maintenance
Precautions for Use of Pellet Fuel
Maintenance ........................... 24
How to Clean the Burner
How to Replace the Ignition Heater
ERROR CODE & METHOD........ 26
Trouble Shooting for Errors
Warranty ................................ 31

The actual product may differ from
the images in the manual.
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Major Safety Instructions
1. Read and fully understand and comply with
the instructions on installation before installing
and operating the product to prevent accident
or damage to the product.
2. If you are not capable of fully
understanding and handling parts or products
specifically designated in the user's manual,
do not attempt repair of the products or
replacement of parts.
3. The user of this product shall fully
understand how to operate the product and
exercise care for the safety of the product.
4. C arefully read the installation manual for
correct assembly, installation, and
maintenance of the pellet burner.
5. Failure to comply strictly with these
guidelines may cause fire, explosion, serious
injury, or damage to property.
This product
shall be installed and repaired by a qualified
engineer only.
5. Installation/Operation using incorrect
methods or installation by a non-qualified
engineer will void the warranty.
6. Using fuel other than the specified fuel
may not guarantee the correct operation of
the pellet boiler described in the technical
datasheet and wield adverse effects on the
operation of the boiler, shortening the lifecycle
of the boiler.
7. The manufacturer shall not be responsible
for the consequences of misuse of the pellet
burner by feeding fuels other than the
specified fuels.
Read the manual carefully,
and then store it in a safe
place.
SYMBOLS USED IN THE MANUAL
ATTENTION
This warning sign indicates that the message to which it refers should be carefully read and
understood, because failure to comply with what these notices say can cause serious damage
to the burner and put the user's safety at risk.
INFORMATION
This symbol is used to highlight information which is important for proper burner operation.
Failure to comply with these provisions will compromise use of the burner and its operation
will not be satisfactory.

The actual product may differ from
the images in the manual.
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Configuration of the Product
Burner box: 1 set■
Feeder box: 1 set■
P art name Quantity
KRPB-20A pellet burner assembly 1
User Manual 1
Indoor temperature controller (C TR-5700 P LUS ) 1
Stainless steel band (for fuel feeding hose, ø75 mm) 2
Fuel hose ø75 mm x 1,000 mm 1
Wiring for connection to the temperature sensor and low
level sensor 1 set
Wiring for connection to the feeder 1 set
Gasket (306 mm x 263 mm) 1
P ower cable 1
Burner ash tray 1 set
P art name Quantity
KRPB-20A feeder 1 set
S crew for fastening the limit switch (M3) 4
Limit switch 1
Limit switch bracket 1
Limit switch gasket (red silicone) 1

The actual product may differ from
the images in the manual.
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Product Characteristics and Specifications
■ Product C haracteristics
The product is a burner boiler designed to use firewood as well as wooden pellet. An automatic
ash recycling unit is applied (when using pellets) for easy cleaning, which is the biggest
shortcoming of the boiler consuming solid fuel. The product operates for a prolonged period of time
without the need to empty and clean the ash tray at the burner. The most advanced control
system is mounted on the product, triggering the shutdown function whenever trouble is detected
on the system to ensure the safe operation of the product.
■ Specifications and Dimensions of the P roduct
Model KRPB-20A
Fuel
ø6mm Compressed Wood pellet
Calorific power : 4.9Kw/kg(4,214Kcal/kg)※
Water content : max 10% of weight
Percentage of ashes : max 1% of weight
Maximum length of pellet 32mm
Heat Output range 23.2 29Kw(20,000 25,000kcal/h)∼ ∼
Max. electric input 450W
Voltage / Frequency 230V / 50 Hz
Range of water temperature setting 60 80∼ ℃
Stand by power 4W

The actual product may differ from
the images in the manual.
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Names of Components
345
6
2
8
7
1
14
15
11
10
9
16 13
12

The actual product may differ from
the images in the manual.
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Names of Components
1. Aux. controller (HOT-4000P) 11. Burner tube
2. Function conversion switch (pellet <->
firewood)
12. C onnections of low level sensor and
temperature sensor
3. Flame window 13. Burner ash tray
4. Main controller (PW-140) 14. Terminal block (circulation pump, feeder
connection-AC )
5. Operation detector 15. Connection of power cable (AC )
6. Controller lid 16. B reaker for ignition heater (AC )
7. +C ontroller lid 17. Ignition heater (AC )
8. DC actuator
- For the automatic re-cleaning of the fire
grate
18. Flame sensor (DC)
9. Fuel feeding port 19. B lower (DC)
10. Overheat bimetal

The actual product may differ from
the images in the manual.
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Installation
■ Applicable Boilers
The following requirements of the boiler shall
be satisfied:
1. The static pressure inside the burning
chamber shall be kept at 5 mmAq during the
rated burning of the boiler.
2. The minimum space of the combustion
chamber for mounting the burner shall be as
follows:
3. Though the burner may be mounted on the
body of the boiler for oil burning, the boiler
must have an hole for cleaning the combustion
chamber without disassembling the burner.
4. E very door installed for the maintenance of
boiler shall be airtight.
Requirements for the Boiler R oom■
The boiler room
has an opening for supplying
outdoor air into the room to
feed sufficient air to the burner.
The size of the opening shall be equal to
or larger than the cross section of
the chimney.
■ How to Assemble the Burner
1. The surface for mounting the burner shall
accommodate a hole with the following
dimensions for connecting the burner (M8 x
40 mm bolts shall be welded on the hole of
ø9 facing forward):
2. Assemble the flange gasket and the burner
on the burner hatch as shown in the figure
below.
Fasten the burner with M8 nuts and adjust
the burner to the left and right to keep the
burner horizontal.

The actual product may differ from
the images in the manual.
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Installation
■ Fuel S torage Device
The user shall provide a hopper-type storage
tank for storing wooden pellets to use the
product. The recommended minimum capacity
of the fuel storage tank is 300 liters (180 kg
of fuel).
■
Connection of electric apparatus
(See page 6)
1. Connecting the power cable
Connect the power cable supplied together
with the product to the power supply cable
connection of Item 15.
Turn the s witch to "ON (-)" position under the
cord after connecting the power cable to
supply power to the product.
2. Connection of feeder and circulation pump
Remove the terminal block cover on the
lower right of the burner, and then connect
the wires of the feeder and circulation pump
to the portion under the terminal block (4-pin)
as shown in the figure.
Finish the ends of the wires with Y-type
terminals.
Wiring shall be performed only
after shutting down power supply.
3. C onnection of low level sensor and
temperature sensor
Connect the wires supplied together with the
product to the connections of the low level
sensor and the temperature sensor.
■ How to Install the Feeder
The exclusive feeder shall be used to obtain
correct output from the KRPB-20A pellet
burner.
The installation angle is critical when installing
the feeder.
1. Connect the fuel hoses supplied together
with the product to the fuel feed port and the
discharge port at point A.
2. Make use of the stainless steel bands to
fasten the hoses securely to prevent leak of
air or fuel.
40±
A
60
Be sure to comply
with the dimensions and
instructions below.

The actual product may differ from
the images in the manual.
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Aux. Controller (HOT-4000P)
■ Electric Properties
■ Names and Description of P arts
Rated power 230 Vrms±15%
Input frequency 50 Hz ± 5%
Max. power consumption 1 kW
Max. humidity limit 90%＠40℃
Operating temperature scope -10 ~60℃ ℃
Storage temperature scope -20 ~80℃ ℃

The actual product may differ from
the images in the manual.
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Aux. Controller (HOT-4000P) - for pellet function
Name Symbol Function
Power/Restart
* Controller power button
(Turning the button off stops fuel feeding; the fan operates for 10 minutes and
stops.)
S etting * Used for every setup
Manual fuel feeding
button
Power on No function operating
Power OFF P ress the button for 5 seconds to switch to manual mode.
* Manual ON/OFF of fuel feeding in manual mode
* Turn O N for 3 min. only in manual mode; the duration is displayed in minutes.
* Turn the power button ON and then OFF to release the manual mode.
Manual fan operation
button
Power on No function operating
Power OFF P ress the button for 5 seconds to switch to manual mode.
* Manual ON/OFF of fan in manual mode
* Turn the power button ON and then OF F to release the manual mode (FND ON/OFF
displayed in manual mode).
UP /DOW N(-/+)UP /DO
WN (-/+)
* Sets the fuel feeding duration
- S ets the initial stop duration in s econds and operation duration in one-tenth second
Fuel feeding LE D * Lights up upon sensing the fuel feed load
FAN LED * Lights up upon sensing the fan load
Fuel
feeding
Initial time * LED lights up when checking the initial fuel feeding time and setting.
(S et from 1 to 99 sec.)
Operation
hours
* LED lights up when checking the fuel feeding time and s etting.
(S et from 0.1 to 9.9 sec.)
Stop Time * LE D lights up when checking the fuel feeding stop time and setting.
(S et from 1 to 99 sec.)
Operation/Alarm LED * Blinks upon alarm triggering (0.5 sec. ON, 0.5 sec. OF F)
LED DISP LAY
* Displays the water temperature, initial s tartup, operation and stop time, and safe
s hutdown
* Displays increment by 1°C (0°C ~ 99°C ) (Time displayed in manual mode)

The actual product may differ from
the images in the manual.
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Aux. Controller (HOT-4000P) - for pellet function
■
How to S et Initial F uel Feeding, Operation during F uel F eeding, and Fuel
Feeding S top Time
(default settings: 30 for initial fuel feeding; 11 for operation; and 07 for stop)
- P ressing the UP /DOWN button each time lights up the Initial, Operation, and Stop LE Ds in
sequence and displays the settings on the LE D Display.
- Keep pressing the setting button for five seconds or more; the LED for the desired time
setting is turned ON, and the numeric values blink on the display.
- Keep pressing the UP /DOWN button until the desired setting is displayed. (If there is no input
signal for ten seconds, the setting is automatically returned to the default configuration and
stored.)
- Initial fuel feeding (set from 1 to 99 sec)
- Operation during fuel feeding (set from 0.1 to 9.9 sec)
- Fuel feeding stop (set from 1 to 99 sec)
■How to S et the Operation of the DC F an (default: 70)
- P ressing the UP/DOWN button lights up all of the Initial, Operation, and Stop LE Ds and
displays the settings of the fan operation on the LE D Display.
- P ressing the S etting button for 5 seconds or more with the value displayed causes numeric
values to blink on the display.
- Keep pressing the UP /DOWN button until the desired time is displayed. (If there is no input
signal for ten seconds, the setting is automatically returned to the default configuration and
stored.)
- Fan operation setting (set from 10 to 99 seconds)

The actual product may differ from
the images in the manual.
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Aux. Controller (HOT-4000P) - for firewood function
Name S ymbol Function
P ower/Restart * P ower off, restarting
S etting * Used for every setup
Fuel feeding ON/OFF
Power ON No function operating
Power OFF Press the button for 5 seconds to switch to manual mode.
* Manual ON /OF F of fuel feeding in manual mode
* Turn ON for 3 min. only in manual mode; the duration is displayed in minutes.
* Turn the power button ON and then OFF to release the manual mode.
FAN ON/OFF
Power ON No function operating
Power OFF Press the button for 5 seconds to switch to manual mode.
* Manual ON /OF F of fan in manual mode
* Turn the power button ON and then OFF to release the manual mode (FND ON/OF F
displayed in manual mode).
UP/DOWN (-/+)
Fuel feeding LED * Not lighting
FAN LE D * Lights up upon sensing fan load
LED
Initial
time
* S etting the fan to strong or weak operation lights up all of the LE Ds.
Operation
hours
Stop
Time
Operation/Alarm LED * B links upo n alarm triggering (0.5 sec. ON, 0.5 sec. OFF )
LE D DISPLAY * Displays the water temperature and strong/weak operation of the fan
* Displays increment by 1°C (0°C ~ 99°C) (Time displayed in manual mode)

The actual product may differ from
the images in the manual.
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Aux. Controller (HOT-4000P) - Firewood function
■ How to Set the Fan Operation (Default value is 30)
- HOT 4000P LED displays the water temperature by default.
- Pressing the UP /DOWN button lights up all of the LEDs and displays the
settings of the fan operation on the LED Display.
- Pressing the S etting button for 5 seconds or more causes numeric values to
blink on the display.
- When the values blink on the display, keep pressing the UP/DOWN button until
the des ired time is displayed.
(If there is no input signal for ten seconds, the setting is automatically returned to
the default configuration and stored.)
-Fan operation setting is available from 15 to 99 seconds

The actual product may differ from
the images in the manual.
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Main Controller (PW-140)
Electronic Diagram■

The actual product may differ from
the images in the manual.
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Room Controller - Indication and Name
Function display window①
- It displays operation ready, current temperature, temperature setting, reserved
operation and stoppage time, combustion, season selection, and fault diagnosis
number.
Button for room, reservation, and outing②
- It is used for selecting among room, reservation, and outing functions.
Bath button③
- It is used for selecting the bath function.
Operation display④
- It turns on the lamp when the boiler runs for each function.
Up/Down button⑤
- It is used to adjust the settings for each function.
Season (temperature) selection button⑥
- It is used for setting the hot water temperature.
Reservation button⑦
- It is used for adjusting the reserved operation and stoppage time.
Power button⑧
- Used to turn power on or off, it is used to turn on the boiler after fixing the fault.
(The boiler can be restarted three consecutive times, and then started
again after five minutes.)

The actual product may differ from
the images in the manual.
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Room Controller - Indoor Function
How to use the room function■
1) Select Room from [Room, Reservation,
Outing]. Each time the button is pressed,
Room, Reservation, and Outing will be
displayed in order.
2) Set the desired room temperature.
by pressing the up( ) / down ( ) button.▲ ▼
3) Set the water temperature by
pressing the season button.
What is the season selection function?☞
It is a function of setting the water temperature when the Room or
Reservation function is selected. The water temperature is set
to 45°C in summer, 55°C in fall, 65°C in spring, 75°C in early winter, and 80°C in
winter.

The actual product may differ from
the images in the manual.
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Room Controller - Reservation Function
To use the reservation function■
1) Select Reservation from
[Room, Reservation, Outing]
(It will turn on and start reservation
operation for the already set duration).
For example, it will run for☞
20 minutes, stop for 2 hours,
and then run for 20 minutes again.
Changing the reserved operation time►
1) Select Reservation and adjust the time
by pressing the up( ) / down( ) button.▲ ▼
- If the setup is ended at this stage, the
reserved stoppage time will be applied first.
2) If you want to adjust the reserved
stoppage time, press the reservation
button one more time.
Method of adjusting the reserved•
stoppage time •
Once it returns to the reservation function,
and the stoppage time blinks, adjust it
by pressing the up( ) / down( ) button.▲ ▼
If the setup ends at this stage, the reserved stoppage time will ☞
be applied first.
3) If you want to adjust the reserved operation time, press the reservation
button one more time.
Using the reservation function☞
By using the reservation function, you can arrange the operation and stoppage time in ▶
the optimal range to save on operation cost. (Set the operation and
stoppage time depending on the season and insulation level of your house.)

The actual product may differ from
the images in the manual.
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Room Controller for Outing Function
How to use the outing function■
1) Select the Outing form [Room, Reservation, Outing].
(The outing function maintains the minimum room temperature to
prevent freezing of the boiler and rooms.)
What is the freezing prevention function?☞
The freezing prevention function prevents the boiler itself and pipes▶
from freezing by maintaining circulation at a certain temperature. During
outing, the boiler should be plugged into the wall, and the gas valve should be
open (supplying gas).
During severely cold weather, you can prevent the boiler from freezing by※
setting the room temperature in the range of about 10~15 .℃
The freezing prevention function does not work in the following circumstances;▶
When there is power outage, or the boiler is unplugged •
When the insulation of the incoming water pipe or exposed pipes is •
in poor condition

The actual product may differ from
the images in the manual.
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Room Control - Bath Function
For the boiler for both hot water and heating※
Using the bath function■
1) To use lots of hot water, select bath by
using the bath button.
2) 2 1/2 hours after selecting the bath
function, it returns to the previous function.
3) If the line water pressure is above
196Kpa (2kgf/ ), install a pressure-reducing valve.㎠
What is the temperature setting function?■
1) It sets the output water temperature
in the Room, Reservation, and Outing
functions; configure the desired temperature
in the bath function as the set temperature.
Setting the hot water temperature■
1) Select the Bath function by using the bath function button.
2) Select the temperature by pressing the up( ) / down( ) button.▲ ▼
3) In the temperature setting function, the range of temperature is 35~60 .℃
Cautions while using the Bath function.☞
Take care against burns caused by the hot water.•
Take care when opening the water tap after setting the bath •
function, since hot water may come out suddenly.
Extra caution is required so that the sick and aged and children are •
not burned by the hot water.
The water from the boiler is not potable.•
During heating (indoor operation), after hot water is used for a long time, •
lukewarm water may come out.
During the bath function, if power is turned off and on, it will return to •
the pre-bath function.