
1
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
Gasifying boilers
MANUAL FOR INSTALLATION, ASSEMBLY,
MAINTENANCE AND USE
Warranty Certificate
VIMAR 201
VIGAS 18 DPA, VIGAS 26 DPA
with AK4000 control

2
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
Declaration of conformity......................................................................................................
1. Technical description......................................................................................................
2. Technical data.................................................................................................................
3. AK4000 control description.............................................................................................
4. Boiler VIGAS DPA fuel PELLETS ............................................................................
5. Boiler VIGAS DPA fuel WOOD.................................................................................
6. Water outlet temperature setting....................................................................................
7. Time setting....................................................................................................................
8. Hardware and software information................................................................................
9. Error notification..............................................................................................................
10. Configuration set up using PIN 0000..............................................................................
11. Operating instruction.......................................................................................................
12. Boiler maintenance and repairs......................................................................................
13. Boiler accessories and assembly...................................................................................
14. List of servise centers.....................................................................................................
15. Problems, causes and solutions.....................................................................................
16. Installation instructions....................................................................................................
17. Wiring diagram................................................................................................................
Warranty Certificate........................................................................................................
Commissioning Certificate VIGAS DPA ...................................................................
3
4
5
7
9
12
17
18
18
18
19
24
27
29
30
31
33
35
37
37

3
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
EC DECLARATION OF CONFORMITY
Issued according to § 12 sec. 3 let. a) Act No. 264/1999 Statute
and 97 / 23 EC
WE, Pavel Vigaš - VIMAR,
hereby declare on our full responsibility, that reffered products comply with technical requirements,
products are safe if terms of use are followed. We secured all actions, which continuously establish
complaince, provide conformity of referred products with technical documentation within specifications and
legal requirements. If any changes occur on the device without permission of producer, this statement
loses its validdity.
Product:
Warm water boiler VIGAS 18 DPA with AK 4000 control
Type:
VIGAS 18 DPA, VIGAS 26 DPA
Producer:
Pavel Vigaš - VIMAR
M. Čulena 25, 974 11 Banská Bystrica,
SLOVAKIA
Competent statutory codes (CSC)
CSC no. 576/2002 Statute – Pressure equipment Directive (97/23/EC)
CSC no. 308/2004 Statute – Low voltage electric devices (2006/95/ES)
CSC no. 194/2005 Statute – Electromagnetic Compatibility Directive EMC (2004/108/EC)
Used harmonized standards for CE marking
EN 303-5: 2012; EN 60335-1: 2012; EN 60335-2-102/A1 : 2010
EN 61000-6-3/A1/AC; EN 55014-1/A2 : 2012; EN 61000-3-2/A2: 2010
EN 61000-3-3: 2014; EN 61000-6-2
Additional date:
Certificates
Certificate 0023/104/2015 VIGAS 18 DPA
Certificate 0063/104/2016 VIGAS 26 DPA
CE was proceeded according to § 13, sec. 3a) Act no. 264/1999 Statute per amendments.
Issued in: Banská Bystrica Statutory name: VIGAŠ Pavel
Date of issue: 24.4.2017 Title: owner
Signature:
M. Čulena 25
974 11 Banská Bystrica
SLOVAKIA
VAT no.: SK 1020548001

4
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
1. TECHNICAL DESCRIPTION
Combined warm water boiler VIGAS 18DPA and VIGAS 26 DPA offers two different systems of fuel
combustion. Wood fuel combustion provides effective way applied with all Vigas boilers. Pellet fuel heating
is provided by classic burning process on fire grate, made of heat resistant steel, where pellets are
delivered by screw feeder. Boiler VIGAS 18 DPA and VIGAS 26 DPA is designed to burn pellets with
diameter of 6 mm and lenght up to 40mm, as well as dry wood materials from sawdust to wood logs of 52
cm long, with max. diameter 20 cm. Sawdust, woodchips and cuttings are recommended to burn together
with wood logs.
Boilers are welded from 4 and 6 mm steel sheets. Inner boiler sheets, which are in contact with boiler
gases are 6 mm thick, others are made of 4 mm steel. The heat exchanger is welded from 57 x 4,5 mm
steel pipes. External casing of is made of 0,8 mm steel sheets. Heat insulation of the boiler is formed by
20-50 mm mineral wool. The combustion gas is discharged through steel flue gas into the chimney.The
pellet container is designed from 1,5 mm steel sheet and its volume is 250 l.The integral components of the
boiler include: front gear unit, electric ignition unit, security tourniquet, air distributor with servo and fan,
chimney temperature sensor, ultrasound sensor to detect level of pellets. Internal space consists of
combustion chamber, where fuel is dried and combusted. Produced wood gas is carried through nozzle
into combustion chamber, where it burns with support od secondary air.
Pellets are led directly to combustion chamber by accurate dosing from container during combustion with
assistance or regulated air supply. Furthermore, the flue gases are led to double-row heat exchanger,
where intensively cooling down untill reaching the flue gas. Unburned ashes and waste is seated in the
combustion chamber, which is advised to be clean approximately once a week. Boiler offers simple
maintenance due to AK4000 control, located on the top of the boiler.
Control AK4000 offers and permits following actions:
to control heating temperature reached by changing of fan speed using by PID regulator
to control and manage operation of pellet feeeding device
to read water boiler temperature
to read volume of pellets in the container
to read temperature of flue gases
to read motor temperature of pellet feeding device
to connect and control the discharge fan
to connect and control circulation pump
to connect and control room thermostat
to connect extended regulation (Expander AK 4000) via BH BUS
to connect modul AK 4000M for data back-up and possible evaluation via PC
option for graphic view of hydraulic schemas with connection per requirements
SAFETY FEATURES
Boiler is supplied with STB safety, which disconnects the boiler fan to avoid boiler overheating above
100 °C and it is equipped with safety cooling exchanger according to EN 303/5: 2012. Manufacturer
recommends to purchase Honeywell TS131 3/4“ safety valve - to be assembled to the safety cooling
exchanger. The boiler is equipped with a safety cell feeder (tourniquett) driven by chain transmission to
avoid pellet re-ignition inside container. In case of power failure or device error, there is always security air
gap between the container and pellet combustion chamber which prevents ignition of the pellets in the
container. To avoid engine gear damage by possible feeding screw blockage or tourniquet blockage, the
boiler is equipped with a safety thermometer that detects the temperature of the engine and if temperature
is 80 °C, engine will shut down.

5
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
Chart 1
Warm water boiler
Combined boiler VIGAS
26 DPA
Energy efficiency class
A++
Nominal boiler output WOOD/PELLETS
Boiler class acc. EN 303-5:2012
Max. operating pressure
bar
Max. wood moisture 20% of heating value. 15 MJ/kg
Fuel PELLETS
Pellets diameter 6 mm, lenght 40 mm (16,5 – 19 MJ/kg)
Standard: ÖNORM M 7135, DIN 51731, EN plus A1
Power range WOOD
kW
8 - 24 15 - 38
Power range PELLETS
kW
1,8 - 18
Fuel consumption with nominal output
WOOD/PELLETS
6,3 / 4,5 9,5 / 5,5
Chimney draught
mBar
0,15 - 0,20 0,15 – 0,25
Minimum height /chimney diameter
m/mm
8 / Ø160 8 / Ø200
Temperature setting option
Fuel WOOD
Fuel PELLET
70 - 85
70 - 85
Weight
kg
75 105
Average gases temperature
Nominal power (Wood)/(Pellets)
Minimum power (Wood)/(Pellets)
210/160
105/90
260/165
105/100
Wood chamber capacity
l
105 160
Door dimension (w-h)
mm
435 -255
Wood chamber dimension
Depth
380
Max. weight of wood fuel
kg
35 50
Pellet container capacity
l
250 340
Max. weight of pellet fuel
kg
45,5
Max. el. power during ignition
W
1600
Max. el. input during burning
(Wood)/(Pellets)
W
29,9 / 84,9 37,6 / 130,5
Voltage/ frequency
V/Hz
230ACV/50
Pressure water loss :
∆t 10 °C
∆t 20 °C
9,97
1,15
10,48
2,55
Burning time at nominal power
Wood
Pellets
6,0
35
4,2
40
Cooling heat exchanger
- water temperature inlet
- water pressure inlet
4 – 15
min. 1 – max. 4
SAFETY
Drain valve HONEYWELL
TS 131 ¾” Release temperature 95 °C
STB fuse, release temperature 100 °C
(tolerance: -6 °C – 0°C )
Flue gas mass flow
0,034 – 0,047

6
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
2.1 DIMENSION CHART AND THE POSITION OF SAFETY PLATE TO ENSURE PROTECTION
OF INFLAMMABLE FLOORING
2.2 BOILER SCHEMATICS
1. Control AK 4000
2. Upper door
3. Chimney flap opening rod
4. Wood chamber
5. Primary air supply
6. Shutter
7. Fan
8. Cover panel
9. Nozzle
10. Secondary air shutter
11. Handle
12. Fire clay bricks
13. Bottom door
14. Chimney flue
15. Firing shutter
16. Heat exchanger cover
17. Upper back cover panel
18. Water outlet
19. Fuse STB
20. Temperature sensor
21. Upper front cover panel
22. Gas temperature sensor
23. Heat exchanger pipes
24. Pellet burner
25. Fire proof lining
26. Secondary air
27. Combustion chamber
28. Flue gas direction
29. Return water mounting
30. Water inlet
31. Pellet container
32. Pellet screw feeder
33. Chamber feeder (tourniquet)
34. Driving gear
35. Ignition coil
36. Connection device
37. Safety cooling exchanger
38. Ultrasound pellet sensor
39. Servo-drive
40. Safety temperature sensor
Schema VIGAS DPA
Pic.3
Input insert for valve TS131 ¾“
Opening for immersion pocket ½“
Outlet for cooling water ¾“
Water outlet 2“
Water inlet 2“
Water filling valve ½“

7
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
3. DESCRIPTION OF AK 4000 CONTROL
3.1 Safety instructions
3.2 Connection to power supply
3.3 Operating conditions
3.4 Maintenance of AK 4000 control
3.5 Control panel
Electronic control panel is equipped with buttons, display including symbols. Further information is
available in the following chapters of the manual. The button options have combined functions,
it depends on provided text and individual boiler configuration setting.
Pic
1. Graphic display 128 x 64 pixels
2. Button ◄ with functions, ENTER
3. Button ▲ with functions,
4. Button ► with functions, EXIT menu (ESC) ,
5. Button (ENTER) with functions,
6. LED light (green OK, red ERROR),
7. Button with functions.
1. Real time image.
2. Information line - current boiler figures shown
Change ▲ or .
3. Information about discharge fan and gas
sensor .
4. Information about nominal power, when boiler
is off.
Pic
5. Graphic information about hydraulic schema
6. Boiler status information.
7. Pellet feeder information.
8. Symbols
9. Set figures
10. Currrent figures
Control AK 4000 presents integral part of VIGAS boilers.
connected when power cord is plugged into a
220/230V power supply.The
display is active when power cord is plugged-in (Pic.4).
Before you plug-in the power cord, please check all protective cover panels.
Avoid any contact of power cord with hot parts of the boiler (e.g. gas flue)
Make sure that upper insulation under the cover panel remains dry (risk of short circuit if damp)
Do not use any violent tow on the power cord.
Always disconnect the power cord, when new electrical devices are being installed to the boiler
(e.g. room thermostat, discharge fan, circulation pump).
Do not remove protective cover panels, in particular the fan cover, when boiler in servise.
Check, whether voltage on the label is the same as your distribution network.
Always follow safety operation manual.
Control AK 4000 is designed for operation with area temperature between +5 and +45 °C.
cannot be used in moist environment or in direct sunlight.
Keep in clean and dust free environment. Anti-
static cloth or wet wipes are recommended to remove dust
or impurities from metal cover or control panel.
Pic.4

8
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
3.6 LIST OF SYMBOLS
Boiler
External boiler
Boiler
switched on
ON DUOMIX
Heating circuit
Boiler
switched off
OFF
Valve with
servodrive
Room
thermostat
Start fire
ON
Pump
3-way thermo
valve
Burning
73 °C
Discharge fan
LADOMAT
Burn out
52 °C
Lambda sonda
λ
Floor heating
End of burning
END
Thermometer
T
Fan perform.
modification
Boiler power
PELLETS
External
thermometer
Boiler power
WOOD
45%
Ignition mode
Screw feeder
Pellet volume
indicator
Room
thermostat
decay
Indication
figure error
x
Temperature of
feeder device
Ultrasound
pellet sensor
Fuel change
Wood Pellets
Boiler power
change
Fuel WOOD
Minimum gas
value
end
Maximum gas
value
max
Fuel PELLETS
Servo position
fuel WOOD
Servo position
fuel PELLET
Temperature
setting
Service
settings
Memory modul
Motion control
Schema
options
Installation
data

9
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
Boiler VIGAS 18 DPA offeres possibility, that during fuel change from pellets to wood or wood to pellets, it is
not necessary to perform any technical modif
ications on the boiler body. It is only required to choose type of
fuel on the display of AK 4000 control. After selecting the fuel type, servomotor driven shutter will
automatically move to desired position (pic.3/6). Boiler design and air control enables
fuel from „WOOD“ to „PELLETS“, after „WOOD“ fuel has burned out.
4. Boiler VIGAS 18 DPA fuel PELLET
Quick choice selection of fuel type using round button
4.1 VIGAS boiler control using fuel - PELLETS
4.1.1 Switch on the boiler
4.1.2 Boiler switched on – pellet ignition mode
Symbol „OFF“ will appear, as shown on the picture, if boiler is switched
off, by pressing middle button „ENTER“, round button pictogram
Ignition mode shows symbol „ON“.
It is automatic process supported by
chimney temperature monitoring.
Discription of ignition:
1. Pump on, monitoring of current chimney gas temperature.
2. Ignition coil on ,fan will blow onto grate.
3. Screw feeder on .
4. Finishing ignition mode and switch to burning mode will start,
current gas temperature exceeds sensored gas temperature over 2 °C
The boiler will switch off, if this condition is not realized, indicated by
symbol „END“ and pellets ignition error.
Ingniton pellets error:
- Clean the burner (pic.3/24) too much ash on the burner,
- Check pellet volume in the container,
- Check igniton coil function (pic.3/35).
Using button select fuel pellets „ “ or fuel wood „ “.
discharge fan is used, see (chap.10.1.3) shown as this button +60
switch on discharge fan for 60 seconds.
It is used, for example during
boiler clean up, it will minimize dust infiltration in the boiler room area.
By pressing middle button „ENTER“
boiler gets into automatic pellet

10
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
4.1.3 Boiler switched on – burning mode
4.1.4 Boiler shutdown (automatic)
4.1.5 Boiler shutdown (manually)
4.2 Parametres setting for fuel - PELLETS
Mode of combustion, the boiler will get after successful ignition of the
pellets. Status is displayed by changing the "ON" → "520C". The burning
mode, the boiler is controlled by a "PID controller based on the
temperature of the boiler and flue temperatures. If the boiler temperature
exceeds the desired temperature by 1°C, output is 0% if the temperature
drops below 3°C desired temperature, the boiler is re-ignited. Current
output is displayed in percentage as a symbol. "20%".
Inside boiler container is p
laced ultrasound sensor, which detects pellet
level. If pellets are above sensor level (container is full), this condition is
displayed by symbol „ “.
If pellets are below sensor level (container is half-
empty), this condition is
Simultaneously, information line shows
remaining time period for boiler to shutdown. This condition is displayed
by empty container symbol “ “ and sign „END“.
Pressing „ENTER“ display offers round button. Pressing button ⊳ boiler will shut down. After
blowing fan is switched on. During 60s period pellet burner is being cooled down. By pressing
button will disappear.
To change setting press
for 2 seconds, in any boiler mode, by pressing button ▲. Parametres
setting depends on type of the boiler and its configuration.
By pressing buttons ▲ choose parameter to be changed and pressing
figure starts flashing.
Using ▲ buttons select required figure and repeatedly press „ENTER“.
2sec.

11
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
Fan adjustment is possible in case you need
to increase or decrease amount of air. This figure is
possible to adjust from -5% to +15%. Figure
adjustment to „0“ meets pellet quality EN Plus A1.
Using fan adjustment:
Low chimney draft........+
High chimney draft...... -
Lower quality pellets.....+
Setting the minimum temperature in the ACCU tank.
The display is active only if the selected hydraulic
diagram of the ACCU tank (see 10.4). Setting range
25-70°C. If the boiler exceeds the desired temperature
by 1°C. there is a transition to the state of the boiler
setback . The re-start of boiler is heating up and
when the temperature drops in ACCU tank set value
for example. 40°C (for fuel "wood" and fuel "pellets").
4.2.1 Boiler power adjustment
4.2.2 Fan adjustment
4.2.3 Fuel Type setting: PELLETS - WOOD
4.2.4 Adjustment of automatic fuel transfer from "wood" to fuel "pellets"
4.2.5 Minimum temperature in the accumulation tank set-up
4.2.6 Adjustment of discharge fan speed
on
In case of installation and selection of discharge fan
(see chap.10.1.3), there is possibility using it to
increase chimney effectivity by permanent running.
Possibility to adjust speed from 30% up to 100% or
completely shutdown to „OFF“.
Correction of output can be used to increase or
decrease the time of dosing pellets in the same
period. The value can be set in the range of -3 to +3.
One step correction = change of time of dosing in one
period of 0.5 seconds. Correction can be used to
achieve optimum combustion of pellets, or
modification of the boiler output. When the quality of
the pellets is according to EN Plus A1, it is
recommended to set the correction to "0". This setting
will take effect for displaying the maximum output of
the boiler.
When you select "AUTO" will occur after burning out
of fuel "wood" and flue gas temperature reaches
end (see Sec. 5.3.2) to automatically transition to
fuel "pellets" and the subsequent continuation of
burning. In "Auto" mode is recommended temperature
shut- end 50°C. When connecting the ACCU tank,
the minimum temperature shutdown automatically
moves to the required temperature of the boiler.
If elected, "OFF" will occur after the end temperature
for the boiler and the statement "END".
/
Boiler VIGAS 18DP is a semi-automatic boiler for
burning pellets and lump wood. When using fuel
"pellets" should be selected graphic symbol .
For fast access to fuel type can be used the
round dial on boiler. See chapter 4.

12
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
4.2.7 Display brightness adjustment
4.2.8 Display contrast adjustment
4.2.9 Adjustment of scrolling information line
5. BOILER VIGAS 18 DPA fuel WOOD
Quick choice selection of fuel type using round button
5.1 Boiler control VIGAS
without discharge fan
5.1.1 Boiler switch on
Select figure for display brightness. This figure is
possible to adjust from 0 to 100.
Select contrast figure of the display. This figure is
possible to adjust from 16 to 24.
Roll
By pressing „
“ information line offers current boiler
figures shown on display (pic.7), e.g. boiler power,
boiler temperature, gas temperature, etc. By pressing
„no“ choose figures for information line ▲.
When boiler is in the „OFF“ mode, by pressing middle button
round button symbol will appear.
Discharge fan is an additional device for VIGAS boiler.
It prevents smoke leakage into the area
of boiler room, while filling up the boiler with fuel. See chap.13.3.
By pressing select fuel pellet „ “ or fuel wood „ “.
wood, please select option „WOOD“
Caution:
Before pressing „ENTER“ it is necessary to start fire inside boiler

13
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
5.1.2 Boiler switched on – heating-up mode
5.1.3 Boiler active – burning phase „60,1°C“
5.1.4 Adding fuel, boiler shutdown (manually)
5.1.5 Boiler shutdown (automatic), switch to mode „PELLET“
By pressing „ “ blowing fan will shut down.
chimney flap and than open the upper door. Add required amount of fuel.
After fuel is added close upper door and close flap by pulling rod
(chap. 11.4). Press „ “ to finish adding fuel.
In the heating phase, the boiler gas exhaust temperature is lower then the
up exhaust gas temperature. Minimum and maximum
temperatures can be modified in boiler set-
standard exhaust gas set-up temperature is up 90°C and maximum set
up temperature is 220°C. Boiler can be in heating mode for up to 60
minutes with minimum of 2min. If boiler does not reach burning phase in
this time, it will automatically shut down – sign „END“.
When exhaust gas temperature drops down below desired temperature
( end) boiler will shut down with symbol „END“
selected automatic switch from „WOOD“ fuel to „PELLETS“
pellet ignition mode and boiler continues running to
the desired temperature.
Advice:
If selecting automatic switch
it is beneficial to set (
60 °C, this will burn out „WOOD“ fuel completely.
The burning phase is active, when the exhaust gas temperature is
(
end) +10 °C or after reaching desired temp. Burning phase is
controlled by PID regulator on the basis of chimney and boiler temp. If the
temperature rises 1°C above desired temp., the output will be 0
decreases >2°C below desired temp., the output will start again.
Choose one option
Cancellation of graphic driver
▲ Change displayed figure
Driver will appear after pressing shortly middle
button ENTER. Graphic driver offers option to shutdow the boil
to add fuel or to cancel the driver.

14
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
Choose one option
+60
To start discharge fan for 60 s (used during heating-up)
ON
Cancel display driver
Fuel „PELLETS“ Confirm to switch to pellets „ “.
▲
Change of indicated figure
Select „+60“ new graphic driver will appear. Running time of discharge
fan can be viewed in the upper corner.
+60
You can add extra 60s , maximum 360s
ON
Switch on
0
Discharge fan switched off
Fuel „WOOD“, Confirm to switch to wood „ “.
▲
Change of indicated figure
5.2 VIGAS BOILER CONTROL
with discharge fan
Fuel - WOOD
5.2.1 Boiler switch on
5.2.2 Boiler active – heating phase „ON“
5.2.3 Boiler active – burning phase „82,5°C“
Discharge fan is optional accessory for VIGAS boiler.
Discharge fan assembly provides increased comfort
up and refilling mode. It helps to reduce smoke from boiler room area. When lighting up the
boiler it will help to create fire base quickly. See chap. 13.3.
When boiler in „OFF“ mode (see display),
by short pressing of middle
button „ENTER“ graphic driver can be recalled.
I
n the heating phase, the boiler gas exhaust temperature is lower then the
up exhaust gas temperature. Minimum and maximum
temperatures can be modified in boiler set-
standard exhaust gas set-up temperature is up 90°C and maximum set
up temperature is 220°C. Boiler can be in heating mode for up to 60
minutes with minimum of 2min. If boiler does not reach burning phase in
this time, it will automatically shut down – sign „END“.
The burning phase is active, when the exhaust gas temperature is
(
end) +10 °C or after reaching desired temp. Burning phase is
controlled by PID regulator on the basis of chimney and boiler temp. If the
temperature rises 1°C above desired temp., the output will be 0
decreases >2°C below desired temp., the output will start again.
By pressing choose fuel pellets „
“ or fuel wood „ “.
Warning:
Before pressing „ENTER“ it is necessary to heat-up the boiler,

15
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
5.2.4 Fuel refill, boiler shutdown (manual),
5.2.5 Boiler shutdown (automatic)
5.3 PARAMETERS SETTING Fuel - WOOD
Choose one option
Change indicated figure
By pressing „ “ boiler switches off and discharge fan will
for 300 s. The time is indicated in the upper left corner. By pressing
running time of the discharge fan can be exceeded.
chimney flap, than open upper door. Add required amont of fuel.
finished, close upper door and chimney flap. By pressing „0“
fan will be switched off. By pressing „ “ refill wil be done,
omatically and blower fan starts.
When exhaust gas temperature drops down under set temperature
( end) the boiler will automatically shutdown. Sign „END“
on the display. If you had selected automatic transfer from „WOOD“
„PELLETS“ , boiler will start – with pellet ignition mode a
continues heating.
Notification:
If selecting automatic transfer it is advised to choose (
below 60 °C, for fuel „WOOD“ to burn out completely.
Use graphic driver. To recall display driver press middle ENTER
The graphic driver offers options: switch off the boiler,
cancel driver.
To get to parametres setting mode press
for 2 seconds, and press ▲button. Parameter
setting depends on the boiler type and its configuration.
By pressing ▲
select parameter, you need to change and press
figure starts flashing.
By pressing ▲ select required figure and press „ENTER“.
2 sec

16
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
max
By choosing maximum exhaust gas temperature, fan
speed will be reduced. Temperature setting is
available between 130 °C to 320 °C. Temperature
setting depends on wood quality and chimney draft.
Recommended value is 220 °C.
By increasing or reducing this figure., boiler power can
be changed. Value is possible to select between -3
and +3. One degree means approx. 10% of boiler
power. Figure „0“ corresponds to boiler rated power.
During mid-season period is advised to decrease this
value.
min
By increasing this value fan minimum speed can be
changed fan. Value can be set between 0 % and
70 %. This option is to be used if permanent maximum
boiler power needed with minimum range. For
example, installation with accumulator tank, heating
workshops, such drying-plant, etc.
5.3.1 Maximum chimney temperature setting
5.3.2 Boiler shutdown temperature setting (shutdown temperature)
5.3.3 Fan power setting
5.3.4 Minimum fan power setting
5.3.5 Fuel type setting: PELLET - WOOD
5.3.6 Automatic switch from „WOOD“ to „PELLETS“ setting
VIGAS 18DPA is semiautomtic boiler for combustion
of pellets and wood. If using fuel „WOOD“ choose
symbol „ “ . For fast access to fuel type use round
driver. See chapter 5.
end
Select exhaust gas temperature, boiler and pump will
shutdown automatically. Temperature setting is
available between 20°C and 130 °C. By selected
temperature is possible to influence size of fire base
for next heat up mode. Low figure will activate
complete burn out of fuel or high temperature will
produce too much ash in the chamber. If you are
using automatic transfer mode „WOOD“ to „PELLETS“
, boiler will start – with pellet ignition mode and
boiler will continue heating. Recommended value is
below 60 °C.
When you select "AUTO" will occur after burning out
of fuel "wood" and flue gas temperature reaches
end (see Sec. 5.3.2) to automatically transition to
fuel "pellets" and the subsequent continuation of
burning. In "Auto" mode is recommended temperature
shut-end 50°C. When connecting the ACCU tank, the
minimum temperature shutdown automatically moves
to the required temperature of the boiler.
If elected, "OFF" will occur after the end
temperature for the boiler and the statement "END".

17
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
By pressing
button for 2 seconds at any time. Basic configuration of the boiler offers heating
temperature setting from 70 °C to 85 °C.
5.3.7 Minimum temperature in the accumulation tank set-up
5.3.8 Discharge fan speed setting
5.3.9 Display brightness adjustment
5.3.10 Display contrast adjustment
5.3.11 Adjustment of scrolling information line
6. BOILER TEMPERATURE SETTING OF OUTPUT WATER
on
In case, the boiler is equipped with discharge fan (see
chap.10.1.3), it can be used in permanent mode to
increase chimney effectiveness. It is possible to
control speed between 30% and 100% or complete
shut down by „OFF“ symbol.
MinT
Setting the minimum temperature in the ACCU
tank. The display is active only if the selected
hydraulic diagram of the ACCU tank (see 10.4).
Setting range 25-70°C. If the boiler exceeds the
desired temperature by 1°C. there is a transition
to the state of the boiler setback
.
The reboiler is heating up and when the temperature
drops in ACCU tank set value for example. 40°C
(for fuel "wood" and fuel "pellets").
Select figure for display brightness. This figure is
possible to adjust from 0 to 100.
Select contrast figure of the display. This figure is
possible to adjust from 16 to 24.
Roll
By pressing „
“ information line offers current boiler
figures shown on display (pic.7), e.g. boiler power,
boiler temperature, gas temperature, etc. By pressing
„no“ choose figures for information line ▲.

18
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
7. TIME SETTING
8. HARDWARE AND SOFTWARE INFORMATION
9. ERROR MESSAGES
9.1 STB error (boiler overheated)
By pressing
figure starts flashing. Use ▲ buttons to select
correct time and date. Mon - Monday,Tue – Tuesday, Wed – Wednesday,
Thu – Thursday, Fri – Friday, Sat – Saturday, Sun – Sunday.
Warning: During electricity short-cut time stops.
To recall information press
at any time and press button. Confirm by pressing „ENTER“. Use
buttons ▲ to choose modul and confirm by pressing „ENTER“. display will provide information regarding
selected module: AK4000D – Display, AK4000S – Power board unit, AK4000L – Lambda board module,
– Pellet expander.
To recall error message press
button at any time and press button two times. Confirm by
pressing „ENTER“ button and error message appears on the display.
Please set-up time and date when boiler firstly plugged in. Time is indicated in the upper left corner of the
display. To recall parameter setting press „ENTER“ button at any time, then press ▲ button twice.
Error free running: Green LED light
Error: Red LED light
Error notifictions and solutions are described in chapter „15. PROBLEMS, CAUSES, SOLUTIONS“.
„STB“ failure is caused by boiler overheating.
Aktivovala sa tepelná poistka.
thermal fuse is activated and fan is disconnected from
the power supply (pic. 3/7)
. Boiler can be only switched
on if STB fuse is reset ma
nually (picture), when boiler
temperature drops down to 60°C.
boiler press „ENTER“ button.

19
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
10. SERVICE SETTINGS USING PASSWORD PIN 0000
10.1 SERVICE SETTINGS
10.1.1 Boiler type setting
10.1.2 Exhaust gas thermometer option
10.1.3 Discharge fan option
10.1.4 Boiler thermometer type setting
Using password PIN 0000 can be applied only in special cases.
In servise settings you can select type of
boiler, hydraulic schema, etc. Mode for servise setting „PIN 0000“ can be recalled by pressing „ENTER“
button at any time, then press ▲ and hold ◄ for 4 s. „PIN 0000“ will appear. Press „ENTER“
4 times. Service setting symbol will appear on the display. Press „ENTER“ and select service operation
using ▲ buttons.
Offers to choose boiler type.Type of the boiler must be
identical with production label.
Label: V18 – boiler power, TVZ – hotair boiler, UD –
wood-coal, DP – wood,pellets, DPA – wood-pellets
automatic, L – Lambda.
When exhaust gas thermometer is damaged, it is
possible to disconnect. It is possible to run boiler
without thermometer. Water temperature will be used
to shutdown the boiler.
yes – boiler with thermometer, no – boiler without
thermometer
Discharge fan is an optional accessory of the boiler.
Aftre connection to the boiler and control unit AK4000 it
is necessary to select option „yes“.
yes – boiler with discharge fan
no – boiler without discharge fan
service settings can be recalled. Using buttons
▲ choose parameter, by pressing „ENTER“ figure starts flashing.
WARNING
Display unit AK 4000 is used to operate all type of VIGAS boilers. It is
important, that software setting is identical with boiler type. When boiler is
display unit shows type of the boiler compliant with boiler nominal
For proper boiler operation, type of the boiler must be always
identical with production label.
Always check if AK4000 display unit is replaced!!!
T
Offers selecting two types of boiler thermometers:
1.Standard : Type KTY
2.Alternative : Type PT1000

20
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
10.1.5 Maximum boiler temperature setting
10.1.6 Minimal temperature setting for boilers with accumulation tank
10.1.7 Power supply frequency setting
10.1.8 Temperature unit setting
10.1.9 Summer time setting
MaxT
Maximum boiler temperature setting can be selected
between 75 °C and 90 °C. Upper figure is used for
boiler with accumulator tank.
Power supply for EU is 50 Hz ,USA and Canada use
60 Hz. If you are not aware of used frequency select
AUTO. Incorrect frequency can cause time error.
Temper.
unit
Choose temperature unit. Option are:
°C - Celsius
°F - Fahrenheit
Offers setting of automatic switch to the summer
time.
MinT
Setting the minimum temperature in the ACCU
tank. The display is active only if the selected
hydraulic diagram of the ACCU tank (see 10.4).
Setting range 25-70°C. If the boiler exceeds the
desired temperature by 1°C. there is a transition
to the state of the boiler setback
.
The reboiler is heating up and when the temperature
drops in ACCU tank set value for example. 40°C
(for fuel "wood" and fuel "pellets").

21
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
10.2 MODULE SETTINGS AK 4000M
10.3 SERVICE CONTROL FUNCTIONS
10.4 HYDRAULIC SCHEMA SETTING
By
modification of hydraulic schema connection will also be changed the control of the pump output and
boiler configuration. Therefore, it is very important that software settings for the hydraulic schematic is
identical with existing boiler installation in t
he central heating system. In the basic memory of the control
basic schemas and schemas intended for operating with the Expander AK4000E. On demand, it
is possible to add Expander schemes via AK4000M module (pic.8).
Updated schemas for Expander
www.vigas.eu
When necessary, it is possible to connect AK4000 control to the m
odule AK4000M (pic.8). This module
allows to upgrade and back
up data maintenance of the boiler control unit. The module is equipped with
data to make it possible to connect to BH BUS power board and USB to the PC.
config
To load a new configuration (connection schematic).
Mainly used for systems controlled by EXPANDER
AK4000E, where it is possible to load personal
connection schematics.
config
Currect configuration back-
up. It is used for boiler
monitoring. It is advised to perform before monitoring.
To load firmware (boiler operating software).
To delete information from module AK4000M.
mon
Boiler monitoring - to save
boiler into memory module
monitoring it is necessary to backup
Data is saved every 3s. Data
control will be realized by producer.
AK4000S
To download firmware into the power board AK4000S
AK4000EP
To download firmware to pellet expander AK4000EP
In service settings the functions of each boiler‘s components can be checked according to the sy
indicated on the display. By selecting component and
pressing „ENTER“ button the function will be
activated. Displayed components depend on the boiler‘s configuration.

22
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
10.4.1 BASIC CONNECTION SCHEMAS
10.4.2 Connection schemas with EXPANDER AK4000E
Expander AK4000E complements the AK4000 boiler control unit. It enables the possibility to control
heating system unit circuits, including regulating the supply water temperature, using different heating sources.
of indoor thermostat and equithermic control (based on external temperature) or in combination, enables control of the
central heating. Expander AK4000E is supplied in sets. According to the particular schematic connection,
supplied as: basic set (order no. 5001), double set (order no. 5002) and triple set (order no. 5003)
connection schemes of the Expander, service settings will be supplied with unit settings for t
he central heating system
and hot water supply. (Detailed description given in EXPANDER AK4000E service guide).
is designed for manual control with 4-way valve. For boiler heating,
a combined tank is used. Both pumps must be connected to power board
AK4000. Contact T3 of power board AK4000S is used for connection of room
thermostat (see 20/B2 and 16.4.)
Recommendation: Connection without 3-
way thermostatic valve does not
secure sufficiently water temperature to
60°C. In order to expand the
lifespan of boilers, it is recommended to use Scheme 0.
shall be used with accumulator tank. To protect from low
temperature corosion, a three-
way thermostatic valve ESBE is used (60°C).
Pump shall be connected to power board AK4000. Contact T3 of power board
AK4000S is used to connect KTY sensor, to monitor tank temperature.
Attention: It is not possible to connect room thermostat with Schema 1. I
tis recommended to control the room thermostat by pump.
Scheme is the same as scheme 0.
temperature for central heating, the 3-way mixing valve is us
operated manually.
Attention: Combines water tank must be used together with 3-
to protect from low-temperature corosion, a three-
thermostatic valve ESBE is used (60°
C). Pump must be connected to
power board AK4000. Contact T3 of power board AK4000S is used for
connection of room thermostat (see 20/B2 and 16.4.)
Schema 0 for (basic schema/BS
a three-way thermostatic valve ESBE is used (60°C). Water regulation
heating is secured by 4-way mixing valve with manual control.
combined tank is used. Both pumps must be connected to power board
AK4000. Contact T3 of power board AK4000S is used fo
thermostat (see 20/B2 and 16.4.)
Atttention:
Recommended schema for VIGAS DPA.
Expander Basic set (code 5001)
Technical requirements for optional accessories
To specify parameters of the pump and mixing valve with
servomotor consult with technician specialist)!
1. Pump 230V/50 Hz.
2. Servounit 230V/50 Hz opening period 60 – 240 s.
3. Pump to be installed cca 0,5 m after 4-way valve.
4. Max. el. current for one Expander 3A.
5. Additional thermometer install cca 0,5 m after pump.
6. External thermometer install on the northern side of building.
7. Room thermostat (Potential free contact).

23
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
10.5 INFORMATION LINE
10.6 INPUTS AND OUTPUTS ELECTRICAL CONNECTION OF CONTROL UNIT AK 4000
used with one heating circuit for floor or radiator. Central heating
temperature can be controlled according to external temperature
thermostat or by combination of both. The boiler pump and central heating pump
are controlled separately. Boiler protection against low-
provides 4-way valve with servounit.
Use: Expander basic set (code 5001).
with two separate heating circuits controlled by servounit.
choose floor or radiator heating or combination. Central heating temperature can
be controlled according to external temperature, room thermostat or with
combination of both. The boiler pump an
d central heating pump work separately.
Boiler protection against low-temperature corrosion provides 3-
valve (60°C).
Use: Expander double set (code 5002).
Schema 7 for (Basic scheme expander (BSE 1)
used with one heating circuit
ed by servounit for floor or radiator heating. Heating of domestic water
supply is controlled by pump. Temperature of central heating is controlled by
external temperature, room thermostat or by combination of both. Boiler
protection against low-temperature corrosion provides 4-way mixing valve.
Use: Expander basic set (code 5001)
with two separate heating circuits and accumulator tank. Option to
choose floor or radiator heating or combination of both. Temperature of central
ated according to external temperature, room thermostat or
by combination of both. Boiler protection against low-
provides 3-way thermostatic valve (60 °C).
Use: Expander double set (code 5002) + 1 x sensor KTY (code 3032).
Display information line
enables indication of particular information about the AK4000 control unit system.
By pressing ▲ choose required data and press „ENTER“. Marked data
information line (chap.3.5).
The control unit AK 4000 offers to view connection of both, inputs and outputs according to current
configuration.
Press „ENTER“ but
is used with one heating circuit controlled by servounit fo
radiator heating. Heating of domestic water supply is controlled by pump.
Temperature of central heating is controlled by external temperature, room
thermostat or by combination of both. Boiler protection against low-
corrosion provides 4-way mixing valve.
Use: Expander basic set (code 5001)
with one heating circuit of central heating system using
servounit with accumulator tank. Heating of warm domestic water is controlled by
pump. Water temperature can be regulated on the basis of external temperature,
room thermostat or the combination of the two. 3-
way thermostatic valve (60°C)
secures the protection of boiler against low-temerature corosion.
Use: Expander basic set (code 5001) + 1x tank sensor KTY (code 3032)

24
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
11. OPERATING INSTRUCTIONS
11.1 Prior to the boiler operation carry out necessary actions !
11.2 BOILER HEAT-UP fuel „PELLETS“
– power boar connection
T1
Boiler thermometer T1
T2
Exhaust gas thermometer T2
T3
Room thermostat T3
T3
Or accu. Thermometer T3
– connecting for EXPANDER 1
Phase servo-unit „OPEN“ to R1
Phase servo-unit „CLOSE“ to R2
Outside thermometer to T3
Utility water thermometer to T4
Pump voltage utility water to R4
In case of connecting „EXPANDER“, the options will automatically extend (AK4000E1)
Read and become fully familiar with the operating instructions, manual and the
AK4000 electronic control.
Check water pressure in central heating system (max. 3 bar).
Check safety electrical components (safety draind valve, safety valve)
Connect electrical components (pump, discharge fan or room thermostat, etc.)
Check metal panel covers.
Check power supply connection (230V/50 Hz) ,
Prepare a sufficient amount of fuel for the burning and heating phase.
Check fireclay bricks and grate for pellet burning according to pic. 3, which
could be out of space due to transportation
Check boiler connection to the chimney
Straignten container with adjustable screws.
Connect boiler to power supply (230V/50Hz) – display activated.
Check if upper and botton door are shut, as well as chimney flap,
Refill the container with required amount of pellets,
Set up required water outlet temperature (chap. 6),
By pressing „ENTER“ switch on the boiler (chap. 4.1.1),

25
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
11.3 POWER CONTROL FUEL „PELLETS“
11.4 BOILER HEAT-UP fuel „WOOD“
11.5 REGULATION AND POWER CONTROL.
11.6 REFILL THE BOILER WITH FUEL
Fuel inside the boiler moves gradually towards ceramic nozzle. Ash falls through nozzle and remains i
combustion chamber. Boiler power is controlled automatically according to set temperature of output water.
Attention: In case of electricity short-
cut or defect of automatic control unit, it is possible to continue
heating (only available for central hea
ting systems with gravitation flow, usin fuel „WOOD“): open chimney
flap and slightly open bottom door. Using this option requires often temperature checking and less fuel
adding. If boiler refilled to its capacity, may cause boiler overheating easily!
open chimney flap using rod (pic.3/3),
by pressing „ENTER“ shortly, select „ “,
carefully open upper door, to release the smoke from chamber,
through upper door (pic.3/2) refill required amount of fuel,
close upper door (pic.3/2) and chimney flap (pic.3/3),
by pressing „
“ finish fuel refilling.
After pellets ignite boiler starts burning mode
This mode directly controls boiler power according water
temperature on output or directly by room thermostat (if connected).
Pellets are transfered through
tourniquet and feeder directly to burner. Container capacity is sufficient to operate for 2 - 7
to required performance. Ultrasound sensor is placed in the container to detect minimum le
Time period for automatic shutdown of the boiler ca be viewed on the display (chap.4.1.4).
WARNING !
During electricity short-
cut is not possible to run the boiler. When electricity is reactivated boiler will got into
automatic mode of fuel heat-up to continue its burning process. It is easy to check fuel heat-
the chimney flap or through upper door. Do not forget to close after checking.
ATTENTION !
Refill container on time, to avoid complete emptying of feeder and tourniquet.
prepare sufficient amount of dry wood for heat-up,
open chimney flap using rod (pic.3/3),
open upper door (pic.3/2)
and place paper on ceramic nozzle, make sure some paper gets into bottom
combustion chamber (pic.3/9), than place small timber, logs and
fill up the rest of the chamber
(pic.3/27),
close upper door and slightly open bottom door (pic.3/13) to boost heating up. (pic.3/4).
fan available switch on to use for heating up,
approximately after 10 – 15 minutes, when fire base is created, closed bottom door and chimney flap.
by pressing „ENTER“ boiler is „ON“.
Boiler starts combusting and automatically control its power
according to required temperature for fuel „WOOD“,
do not forget to check upper door, lower door and chimney flap.
WARNING !
Do not open lower or bottom door if not necessary to avoid smoke leakage into the boiler room
area. Refuel only shortly before burn-out (pic.3/4).
Burning base
Bottom door
open

26
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
11.7 BOILER CLEANING
Wood characteristic table
Wood
Fuel efficiency
[MJ/kg]
20% humidity
Fuel efficiency
[MJ/kg]
25% humidity
Hardness *
weight [kg/m3]
25% humidity
Poplar 12,9 12,3 1 530
Fir 15,9 14,0 1 575
Spurce 15,3 13,1 1 575
Willow 16,9 12,8 1 665
Pine 18,4 13,6 1 680
Alder 16,7 12,9 2 640
Birch 15 13,5 2 780
Maple 15 13,6 4 660
Beech 15,5 12,5 4 865
Ashen 15,7 12,7 4 865
Locust 16,3 12,7 4 930
Oak 15,9 13,2 4,5 840
[kg/m3] = [kg/fm], fm – fullmeter, * (1 very soft...5 very hard)
Use only recommended fuel.
Do not overload the boiler with fuel during mid-season period, to avoid tar production.
When refilling the boiler, make sure that fuel does not get between mounting and chimney f
would stop chimney flap from proper closing.
It is important to lay wood properly, to allow proper closing of the upper door. Forced closing can
damage heatproof lining.
It is recommended that only person over 18 years, should operate the boiler.
Gasification chamber cleaning
It is necessary to remove tar from the gasification chamber once a week. It is recommended to burn it off
with the upper door and chimney flap open. If there is extra ash which did not fall throug
into the fireclay combustion chamber, this should be removed from time to time. Fuel bunker will
increase to the original size and primary air flow through nozzle will be enhanced.
Optimal wood burning and keeping minimum temperature of the reverse water at 60°C will ensure that the
gasifying chamber and exchanger will only soot little. Using damp wood may cause water to condense on
the walls of the combustion chamber, which creates tar on the surface.
It is necessary to clean exchanger pipes once a month using the fire rake (round plate).
from lower part of combustion chamber through bottom door.
Recommendation: If the exchanger is not cleaned regularly it will become
clogged with tar. Do not use
solvents. The boiler must be cleaned whilst it is hot!
Heat boiler to approx 80°C (without fan) through open
upper door and chimney flap. Then close the flap and door. Using gloves, carefully open exchange
Clean clogged pipes with relevant accessories.
After cleaning, close exchanger cover and let the boiler
burn / gasify for approx. 5 hours at maximum performance, in order to get rid of any remaining tar.
this situation in the future.
WARNING: Boiler room area must be permanetly ventilated at maximum during cleaning time.
Combustion chamber cleaning
to sweep out ash and dust that has fallen and settled in the combustion chamber once
every 3-5 days. When using pellets, clean the pellet burner once a month.
Pellet burner is placed together with firebricks inside c
ombustion chamber. Please take care for
burner to be cleaned and placed to its initial space.
chamber
Humidity dependence period
Number of months after cutting

27
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
12. BOILER MAINTENANCE AND REPAIRS
12.1 DOOR TIGHTNESS
12.2 CHIMNEY FLAP TIGHTNESS
12.3 CERAMIC NOZZLE
The contractor provides regular service and boiler maintenance. During
operation it is necessary to check
water pressure, door seal, chimney flap tightness, exchanger cover seal, flue cleanliness and fan
When boiler switched off at the end of heating season clean properly combustion chamber. To avoid
residual humidity leave the bottom door open tohether with chimney flap. Do not leave pellets inside
container and feeder to avoid wetting and desintegration.
Door is stabilized by 3 points – 2 rotary pins and door shutter.
re is possibility to set by shutter or hinge side. Slightly turn
hinge to release and turn hinge screw and then move door in desired
direction. Number„1“ is area where gasket is joined.
The heatproof nozzle is a block made of heat-
proof concrete and its use is to
with secondary air to ensure efficient burning. The nozzle is
located on the water cooling rack. The nozzle is surrounded with heat-
concrete at the same height as the nozzle. The life of the nozzle is
dependent on mechanical damage as a result of f
uel loading or stoking the
fire. Therefore, the nozzle is considered as a spare part. Cracks noticed on
the nozzle are not a reason to change the nozzle. It is only necessary to
change the nozzle if it is dropped or is broken. Remove the pieces of the
broken nozzle and replace with a
new nozzle ensuring that it is inserted and
fits into the opening.
When cleaning exchanger pipes (pic.3/23) make sure that flap area
as well as flap itself (pic.3/15). Flap leakage can decrease boiler power.
Notification: Flap is secured by 2 bolts with loose fitting. Do not fasten!!!

28
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
12.4 SECONDARY AIR FLAPS SETTING
12.5 PELLET BURNER
12.6 TOURNIQUET AND PELLET FEEDER
12.7 AIR DISTRIBUTOR, FAN, SERVO-UNIT
12.8 CHIMNEY EXHAUST GAS THERMOMETER
0 Not recommended
1 Humid fuel
1,5 Humid softwood
2 Dry softwood
2,5 Dry hardwood
2,5 and
more
Very dry, h
Flap position affects quality of combustion. The
correct proportion between primary and secondary
air is set by screws „1“.
Ideal set up of secondary
air is 1,5 turn of screw „1“.
or check setting, follow these steps:
Step 1: Loosen the bolt on screw „1“
Step 2: Screw „1“ turn all the way to the boiler
body,
Step 3: Loosen the screw for 1,5 turn (ideal),
Step 4: Tighten the security bolt.
For proper operation of exhaust gas thermometer is
important its cleanliness. When cleaning heat
exchanger always gently wipe away dust from
Thermometer must be in accurate
Its metal ending must match with its
Shifting the position can significantly change
displayed value of exhaust gas temperature).
The pellet burner is designed to burn pellets by classic combustion. The burner
is made of heatproof steel. It is necessary to replace if worn out or shapeless
Chamber pellet dispenser (tourniquet)
quired amount of pellets into
the feeder and to create separate air space above
The construction of the driver using chain
transmission will avoid pellets to catch fire inside
container. This design also provides easy checks
iquet is jammed with unwanted
unit „3“ is device designed to provide
automatic air transfer created by blower fan „2“
„WOOD“ to „PELLET“ and vice versa. Servo-unit position can be
display
, .
When boiler is shut down or switched off servo –
moves to the position 100% „PELLET“.
IMPORTANT !
It is necessary to clean fan blades once per year!

29
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
Primary and secondary air duct cleaning
Remove front cover panel (pic. 3/8).
Remove secondary air steel plate.
Use vacuum cleaner to clean primary and
secondary air duct.
Remove and clean primary air duct.
12.9 CLEANING OF AIR DUCT SYSTEM
13. ACCESSORIES AND ASSEMBLY
13.1 SAFETY DRAIN VALVE
Cooling safety exchanger usage:
13.2 ROOM THERMOSTAT
The clearness of air pipes is the basic requirement for the proper combustion of the boiler.
to clean pipe system at least once per year. The combustion takes place on the basis of primary and
dary air duct. The boiler construction allows by gradual dismatling to access all required area for
cleaning.
Cooling safety exchanger together with safety drain valve
porvides boiler protection against overheating during a powe
circulation will shut down the pump and then the water flow in central heating
In case, there is no option to use automatic gravity flow or
minimum 5kW consumption, boiler can overheat.
Assembly of safety drain valve TS 131:
Valve TS131 screw on to the mounthpiece „1“. Safety exchanger must be
water tight (closing water prior flowing). The second outlet must be directed
into the drain. Insert the thermal sensor ½“ into mouthpiece „2“.
Safety drain valve is not part of the boiler.
The assembly of the drain valve and thermal sensor is necessary to
perform before the central heating system is filled with water.
The pressure of cooling water should not be dependent on voltage.
Do not loosen ¾“ inserts „2“, may cause water leakage.
aluminium washer „4“ with rubber insert „3“, that seals copper pipe
inside mouthpiece „5“. If water leakage occurs tighten insert ¾“ no. „2“.
Safety drain valve opens according to boiler outlet water temperature.
temperature reaches 95 °C, valve opens. Overflowing water from communal
water supply absorbs boiler temperature and avoids overheating or poss
boiler damage. This system is in accordance with standard STN EN 3035/2012.
1. Safety drain valve
2. Hole for insert
3. Discharge
Connecting room thermostat to the boiler will provide more comfort for operator
It shall be connected to the power board unit AK 4000S. Standard version has
Contact element is potential free.
If T3 is disconnected, display shows „OFF“ symbol for room thermostat.
case, the fan will gradually shutdown. Boiler condition is indicated by symbol
„
“. If the room thermostat is „ON“ boiler starts again.
Attention: If the room thermostat is disconnected for more than 1 hour,
fan will operate at short intervals to keep firebase active.
Secondary air
Primary air
Primary air duct

30
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
13.3 DISCHARGE FAN
13.4 CIRCULATION PUMP AND 3-WAY THERMOSTATIC VALVE
13.5 COOPERATION OF VIGAS BOILER WITH ACCUMULATION TANK
14. LIST OF SERVICE CENTERS
In order to maintain quality and safety it is recommended to carry out boiler repairs by authorized service technician
appointed by producer:
Pavel Vigaš - VIMAR, Príboj 796, 976 13 Slovenská Ľupča, Slovakia.
tel. 00421 48 41 87 022.
tel. 00421 48 41 87 159
email:
vimar@vimar.sk
Current list of sales and service centers can be found on the website: www.vimar.sk , www.vigas.eu
VIGAS 16, VIGAS 18 DPA, VIGAS 25, VIGAS 29 UD 8 m 160 mm
VIGAS 40, VIGAS 26 DPA 8 m 200 mm
VIGAS 60, VIGAS 80, VIGAS 100 12 m 200 mm
Drawing with parametres V25 a V80 available at: www.vigas.eu, www.vima
The basic version of electronic control unit without expander allows to connect pump with
AK 4000S power board. The operation of
pump depends on selected hydraulic schema
and boiler temperature. Using two methods of pump control, by pulse or permanent
allows the pump to go on and off within specific time interval. Pump activity
depends on the boiler output tem
perature. The main advatage is protection of the boiler
against low-temperature corrosion.
Permanent running is used with 3-way thermostatic valve
or Ladomat installation. See
chap. 10.4.
The pump operation is indicated by a flashing symbol on the display.
Discharge fan „2“ is designed to eliminate smoke in the boiler room area during refueling
VIGAS boiler. In case chimney does not comply with minimu
m parameters „A“ a „B“ it is
recommended to install discharge fan. This shall be installed between chimney flue and
chimney body. Fan capacitor „3“ shall be mounted to the side. It shall be connected to the
power board unit AK 4000S. It comes in two sizes depending on chimney diameter.
– for VIGAS 16,18DPA, 25, 29 UD.
– for VIGAS 40, 60, 80, 100.
As standard in the boilers VIGAS, one load is sufficient for 12 hours of operation which
means that it uses less than 30% of rated output. In view of the life of the boiler it is
preferred that the boiler operates at least at 50% of rated output.
If the boiler VIGAS is used
tank, 100% of rated output is used to achieve the desired boiler temperature. If
there is current requirement for heating, 100% output of the boiler is divided into charging
ACCU tank and heating. In this case, the ta
nk is recharged by the excess output of the
boiler. In view of the fact that the boiler and ACCU tank
is hydraulically connected to each
other, the temperature of the ACCU tank
and the boiler rises to the desired temperature of
the boiler together. After
exceeding this temperature by 10°C, boiler goes into the
attenuaton (0% boiler output). In this mode, heating and charging ACCU tank
managed solely by means of pumps. The great advantage of this system control is that in
the attenuation mode, it is
possible at any time to add the fuel to the boiler, without
overheating of the ACCU tank
, which in practice increases the time between fuel loading.
The automatic re-heating up takes place only after the exhaustion of ACCU tank
selected temperature MinT. ACCU tank
minimal temperature volume can be adjusted
from 20°C to 70°C. After burning out of fuel and decrease of chimney temperature to the
, the boiler will shut down. In a combined automatic boiler VIGAS 18 DPA,
after burning out of fuel "wood" boiler will automatically switch to fuel "pellets" and continue
heating another few days.
NOTE: For all hydraulic circuits with ACCU tank, there must be a thermometer for ACCU
tank (code 3032) connected to regulation AK4000 and its location to insert at the top of the
accu. tank.

31
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
15. PROBLEMS, CAUSES AND SOLUTIONS
During heating season boiler power
decreased from previous period.
Used fuel was too humid.
Clean pipes airway system. See chap.12.9.
Clean fan blades. See chap.12.7.
When chimney flap closed, boiler does not
perform and smoke appears.
Smalll amount of primary air. Clean primary air system.
Combustion chamber contains large
unburned pieces of wood.
Nozzle hole enlarged. Replace nozzle. Check secondary air
flaps. See chap.12.4. Decrease the temperature end.
See chap. 5.3.2.
Leakage of smoke after the door is closed. Insufficient tightness of the door. Adjust the door. Check
door tightness. Door seal needs to be reversed or replaced.
Unable to open chimney flap. Chimney flap is stuck by tar. Increase the boiler operating
temperature. Use dry fuel. Increase end. See chap.
5.3.2.
After opening the upper door and chimney
flap, smoke is dispersed in the boiler room.
Low chimney draft. Chimney diameter must be wider than
diameter of boiler flue outlet. Fitting of discharge fan is
recommended. See chap. 13.3.
Cracked fireproof lining. Not defect Only separates combustion and gasification
chamber.
Fan is not turning. After hand spin it starts
running.
Defected start capacitor. Change fan capacitor.
Boiler is switched off, but fan is still
running.
Damaged fan wiring. Neutral cable for fan is connected to
the ground wire.
Pump is working, even if symbol does
not show pump in operation.
Damaged pump wiring. Neutral cable for fan is connected
to the ground wire.
During ignition mode, pellets fail to ignite. Defected ignition coil. Check ignition coil function.
During pellets feeding mode, feeder is not
moving.
Check chain gear, check tourniquet, check motor gear. See
chap.12.6.
Na displeji sa zobrazí výpis „MAX“
ak kotol prekročí teplotu 93 0C.
Red control LED is flashing
When temperature drops below
desired temperature boiler starts
running again.
STB error
Red control LED is flashing
Boiler overheated – when boiler
temperature drops down, reset
STB manually. See chap. 9.1.
Overheated gearbox
Red control LED is flashing
Overheating the motor gearbox
above 80 °C will shut down the
boiler. Check tourniquet, feeder
against latching, etc.
Open door
Red control LED is flashing
Security door contact.When
open boiler shuts down. See
contact D – D of wiring diagram
AK4000EP.
Contact not used.

32
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
Interrupted fuse 3,15A
Red control LED is flashing
Interrupted fuse 3,15A, which
connects boiler pump.
Check pump connection
Warning of chimney thermometer
Red control LED is flashing
Warning is displayed when after ignition
pellet flue temperature at 100% power
boiler flue temperature does not exceed
the captured at the end of the ignition to
2 minutes of 50°C
clogged chimney thermometer. .
open damper during ignition pellets. .
increase power correction
(chap.4.2.1). ).
increase adjustment of the fan
(chap.4.2.2).
Thermometer chimney ejected,
cleaned and inserted back.
Kontrola po zapálení peliet
Red control LED is flashing
The boiler shutdown occurs if pellets for
ignition temperature of the flue at 100%
power boiler flue temperature does not
exceed the captured at the end of the
ignition to 2 minutes. by 2 ° C.
clogged chimney thermometer. .
open damper during ignition pellets. .
increase power correction
(chap.4.2.1). ).
increase adjustment of the fan
(chap.4.2.2).
Thermometer chimney ejected,
cleaned and inserted back.
Pellet ignition error
Red control LED is flashing
Error appears when at the end of the
ignition pellet chimney flue temperature
temperature does not exceed the
captured at the beginning of the ignition
at 2°C
Clean burner (pic.3/24) large amount
of ash inside burner
Check pellet level inside container
Ch
eck ignition coil function (picr.3/35)
Boiler temperature reading error
Red control LED indicator
Disconnected boiler thermometer
AK4000D T1 KTY
Disconnected boiler thermometer –
check thermometer
Damaged thermometer –
replacement required
Short circuit of boiler thermometer
AK4000D T1 KTY
Damaged boiler thermometer –
replacement required
Short circuit of thermometer in the
connection area - check
Exhaust gas temperature reading
error
Red control LED indicator
Disconnected exhaust gas thermometer
AK4000D T2 PT1000
Disconnected chimney thermometer
– chek thermometer.
Damaged exhaust gas thermometer
– replacement required
Short circuit of gas thermometer
AK4000D T2 PT1000
Damaged exhaust gas thermometer
– replacement required
Short circuit of thermometer in the
connection area - check
Room thermostat evaluation error
Red control LED indicator
Room thermostat reading error
Disturbance of room thermostat
signal caused by induction of
concurrent power supply

33
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
16. ASSEMBLY REGULATIONS
16.1 ASSEMBLY AND INSTALLATION INSTRUCTION
16.2 ELECTRICAL EQUIPMENT CONTROL AND MAINTENANCE SAFETY REGULATIONS
Boiler assembly and installation must be carried out by authorized technician.
Boiler must be commisioned by authorized trained technician.
Boiler does not require separate solid base.
Minimum temperature of reverse water returning to the boiler shall be 60 0C.
be secured by thermostatic or thermoregulatory valve.
Recommended manufacturer is ESBE: Type
VTC312 (G1“) up to 30kW boiler, type VTC512 (G6/4“) up to 150kW boiler performance
Boiler room must be permanently ventilated through min. 0,025 m2 slot.
Diameter for inlet and outlet
must be similar.
Boiler must be installed in the basic, usual surrounding in accordance with STN 33 2000-3.
It is advised to follow saftey and health regulations in accordance with current requirements notice
no. 718/2002 Statute.
It is strictly advise to follow required standards regarding flammability level of materials surrounding
the boiler according to standard STN 73 0823:1983/z1 - Flammability degree of building materials.
The boiler operator person must follow relevant regulations and standards, as well as the following rules:
While boiler in service, none of the following actions may be carried out.
• DO NOT uncover the electronics, fan, thermostat.
• DO NO change the fuse.
• DO NOT repair damaged cables or insulation.
Maintenance and repairs to the boiler with uncovered electrical equipment may only be done by
authorized person, according to notice no. 74/1996 Statute.
Before any interference with electrical equipment, it is necessary to unplug and disconnect power cord
Connection to power supply is only allowed after all cover panels are mounted back on the boiler.
If any defect of electrical equipment occurs or boiler insulation is damaged, it is advised:
• DO NOT touch any part of the boiler.
• IMMEDIATELY unplug and disconnet the boiler from power supply.
• TO CALL authorized technician in order to remove failure.
Boiler can only be connected to the heating system with relevant thermal output capacity
When using enhanced circulation, central heating system must offer option, in case of a
(shutdown boiler and pump) to ensure boiler minimum power at 5kW.
This is provided by safety cooling
exchanger together with Honeywell drain valve TS131.
Drain valve Honeywell TS 131 is additional component, it is not part of the boiler.
In case, boiler is installed with accumulator
tank, the minimum tank volume is calculated according
to STN EN 303/5:2012 as follows: Vsp = 15TB x Q
N
(
1 – 0,3QH/Q
min
)
Vsp – volume of accumulator tank [L] QN – nominal heating power [kW] TB – combustion interval [hours.]
QH – required boiler power - heating area [kW] Q
min
- minimum heating power [kW]
Minimum recommended volume of buffer tank for VIGAS 18 DPA is 500 L, VIGAS 26 DPA is 1 000 L.
Boiler must be connected to the chimney correctly and shortest way. Chimney should not be occupied
by any other devices. Chimney venting must be in accordance with STN 734201 and STN 734210.
We do not recommend permanent connection to the water supply through inlet valve, in order to avoid
increased pressure in the system. Maximu overpressure is 0,3 MPa.
Boiler room must be properly ventilated.
Except basic maintenance, it is strictly forbidden:
To carry out any work on electrical equipment while boiler is plugged in.
To touch defected electrical equipment, mainly damaged wire insulation, etc.
To operate boiler while uncovered.
To operate boiler with any defect on electrical equipment or installation.
To repair damaged electrical parts of the boiler by person other than authorized and appointed by
producer.

34
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
16.3 Recommended basic schematics with
1. Boiler VIGAS
2. Safety elements
3. Room thermostat
4. Pump
5. Domestic water tank
6. 4-way valve
7. Heating circuit
8. Expansion tank
9. Drain valve Honeywell TS 131 ¾“
10. Discharge fan
11. Thermostatic valve ESBE VTC 312, VTC 512
12. 3-way mixing valve
13. Accumulation tank
M - Servo-motor unit
T - Thermometer KTY
TE – External thermometer KTY
TP – Pump thermostat
16.4 Recommended basic schematics with
control + Expander AK4000 Basic set

35
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
17. WIRING DIAGRAM CONNECTION
K9
K8
K7
K6
K5a
K5
K4
K3
K2
K1
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3a
3
2
1
no.
Wiring diagram VIGAS 18DPA, 26 DPA
Cable for servounit Belimo
Cable set for power supply
Power cable AK 4000EP
Cable motor + gear box
Ignition coil cable
Communication wire AK4000D
Ground wire for control panel
Main ground wire
Sensor connection modul
Cable set for STB fuse
Fan cable
Power cord EU
Servounit Belimo 24V
Pellet. EXPANDER AK4000EP
Motor + gear box TTM 203
Ignition coil
Room thermostat
Memory modul AK4000M
Expander AK4000
Discharge fan
Container sensor type KTY
Motor sensor type KTY
Ultrasound transmitter
Ultrasound receiver
Gas sensor type PT 1000
Boiler sensor UNI type KTY
STB fuse 100
°
C
Capacitor
Fan EBM 120- 26DPA
AK 4000SL Lambda board
AK 4000D Display
Description
3013
4012
3013
4014
4006
3019
3018
3022
3015
3010
3025
3008
4009
0640/A
0638
3030
4007
SET
0507
3032
1104
4011
4010
3027
3026
3029
0515
0516

36
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
Records of electrical device connections (pump, discharge fan, room
thermostat, expander, etc.)
signature
Records of warranty and after warranty service
The list of most frequently used spare parts for
A (use „Code“ when ordering)
0102 Ceramic nozzle (3-hole) LAC pic.3/9
0104 Fire clay brick P4 (for iron ash) pic.3/12
3008 Servo Belimo 24V pic.3/39
0401 Gasket / Door seal
0405 Heat exchanger seal
0516 Fan EBM 108 pic.3/7
0601 Handle (complete)
0633/A Burner 18 DPA (refractory steel) pic.3/24
0634/A Tourniquet blades pic.3/33
0636/C Feeder device 18DPA complete
0637/A Feeder device pic.3/32
0638 Ignition coil pic.3/35
0640/A Motor + gearbox TTM 203 pic.3/34
0641/A Gear wheel (11z, 2x 32z)
0660/B Chain for pellet boiler short (40 cells)
0660/C Chain for pellet boiler long (42 cells)
0677 Fric. bearings EFOM Ø16 container,tourniquet

37
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
LETTER OF WARRANTY
Certificate of Quality and Completeness
VIGAS commission certificate
Product
Serial number :
Producer confirms, that boiler complies with standards, EN 303-5:2012, EN 61010-
EN 50081-1:1995, EN 50082-1:2002, EN 61000-3-3:2000, EN 61000-3-2:2000+A1+A2:2001.
Date of production control
Stamp and signature of seller
Stamp and signature of producer
VIGAS DPA kW
Product VIGAS DPA kW
Serial number
User name and address :
Date of purchase
Date of commission
Signature of authorized technician
Stamp and signature of seller
Stamp and send to producer.

38
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
Following operations were performed during commissioning:
Thorough explanation of the boiler maintenance and service.
Boiler check before heating.
Provided burning test.
Complete and confirm data of warranty certificate.
Boiler user signature
Stamp and send to producer
Instruction and warranty condition for customer:
Claims regarding delivery completeness must be in accordance with Commercial law and
Civil law of the supplier
Damage and defects during transportation must be claimed by buyer to the carrier at the
time of delivery.
Warranty period is 24 months from the date of purchase.
Warranty is valid only if the boiler is commisioned by an authorised technician.
Warranty is valid only if the electric equipment is added according to regulation by
authorized technician and recorded in relevant documents of connected devices.
Warranty applies only to the boiler construction, used material and complete boiler unit.
Warranty does not apply:
Consumer material: gasket, exchanger seal,under fan seal, ceramic nozzle,
lining and fire clay bricks.
Defects caused by customer.
Defects caused by incorrect assembly, improper operation or maintenance,
is used for any other purpose as specified by producer.
Otherwise to claim quarantee applies by relevant provision of Civil law.
Producer reserves the right to make changes under the product innovation.

39
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
Commission Regulation (EU) 2015/1189,implementing Directive 2009/125/EC of the European Parliament and of the
Council with regard to ecodesign requirements for solid fuel boilers, commission Regulation (EU)2015/1189
supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to energy labelling of
solid fuel boilers.
26 DPA
Energy efficiency class
Coefficient of energy EEI
Seasonal Energy efficiency heating area ηs %
Mode skoting Automatic
Boiler is recommended to operated from a reservoir
least
L 500 800
Condensing boiler
Preffered fuel Laminated wood in the form of pellets
Charactericstic when operat
Useful thermal output at rated power Pn kW
Useful efficiency at rated power ηn % 91,87 92,83
Useful thermal output at minimum output / <50% Pp kW 4,4 6,6
Useful efficiency at minimum output ηn % 90,39 91,74
Own electricity consumption at rated power el
max
kW 0,085 0,130
Own electricity at minimum output el
min
kW 0,014 0,010
Own electricity consumption in standby mode PSB kW 0,001 0,001
Own electricity consuption in firing mode Pzap kW 1,773 1,693
Sezonne emissions heating area TČ1) PM mg/m3 13,2 21,0
Sezonne emissions heating area POZ1) OGC mg/m
3
14,4 19,7
Sezonne emissions heating area CO1) CO mg/m
3
260,9 360,5
Sezonne emissions heating area NOx1) NOx mg/m
3
Characteristic when operating with substitute fue
Substiture fuel Chopped wood ,moisture content 20%
Useful thermal output at rated power Pn kW
Useful efficiency at rated power ηn % 91,57 91,41
Useful thermal output at minimum output / <50% Pp kW 10,0 15,0
Useful efficiency at minimum output ηn % 90,95 90,10
Own electricity consumption at rated power el
max
kW 0,030 0,038
Own electricity at minimum output el
min
kW 0,005 0,012
Own electricity consumption in standby mode PSB kW 0,001 0,001
Season emissions of the heating space TČ2) PM mg/m3 42,8 22,7
Season emissions of the heating space OGC2) OGC mg/m
3
28,3 28,2
Season emissions of the heating space CO2) CO mg/m
3
370,6 456,4
Season emissions of the heating space NOx2) NOx mg/m
3
221,6 150,0
1. Preffer fuel: Chopped wood, moisture content 20%
Information sheet with data on the energy consumption of products
VIGAS 18 DPA , 0032/104/2015
VIGAS 26 DPA , 0063/104/2016

40
Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers
Producer:
Pavel Vigaš - VIMAR
M. Čulena 25
974 11 Banská Bystrica
SLOVAKIA
Production plant:
Pavel Vigaš - VIMAR
Príboj 796
976 13 Slovenská Ľupča
SLOVAKIA
tel.: 00421 48 4187 022
fax: 00421 48 4187 159
WWW.VIMAR.SK WWW.VIGAS.EU
vimar@vimar.sk
All technical changes are reserved by Pavel Vigaš VIMAR 2017 Displey ver.2.00
Pictures are illustrative and may differ from reality.