ATTACK STANDARD, PROFI, LAMBDA, DPX STANDARD, DPX VPROFI User Manual

W W W . A T T A C K . S K

WOOD GASIFYING BOILER

ATTACK DPX

STANDARD / PROFI / LAMBDA

USER MANUAL

for correct installation,
operation and cleaning

Important! Read this manual properly before the boiler start-up!

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CONTENTS

1. INSTALLATION AND CHIMNEY PARAMETERS................................................................................................. 4

2. VERIFICATION OF THE CORRECT CHIMNEY PARAMETERS ......................................................................... 5

3. DEVICES FOR CHIMNEY DRAUGHT MEASURING ........................................................................................... 6

4. OPERATION PRESSURE IN HYDRAULIC CIRCUIT ............................................................................................ 7

5. BOILER PROTECTION AGAINST EXCESSIVE CONDENSATION – ATTACK-OVENTROP ........................ 7

6. CORRECT ASHTRAYS POSITION ........................................................................................................................... 8

7. FUEL .............................................................................................................................................................................. 8

8. AFTERCOOLING CIRCUIT INSTALLATION ......................................................................................................... 9

9. CORRECT ADJUSTMENT OF AIR INLETS ............................................................................................................ 9

10. ASHTRAY CLEANING .......................................................................................................................................... 10

11. HOW TO CLEAN SPACE AROUND THE ASHTRAY ..................................................................................... 12

12. EXCHANGER PIPES CLEANING BY LEVER OF TURBULATORS ............................................................... 13

13. HOW TO CLEAN SPACE UNDER EXCHANGER ........................................................................................... 14

14. POSITION OF LEVER OF TURBULATORS BY CLEANING .......................................................................... 15

15. TOOLS FOR CLEANING OF SPACE UNDER EXCHANGER ........................................................................ 16

16. CONTROL OF TUBULAR EXCHANGER´S FUNCTIONALITY ..................................................................... 17

17. ACCESS TO TUBULAR EXCHANGER .............................................................................................................. 17

18. EXCHANGER´S COVER REMOVAL .................................................................................................................. 18

19. CONTROL OF CORRECT FUNCTION OF THE HEAT-UP FLAP ................................................................. 18

20. TURBULATOR THREADS CLEANING.............................................................................................................. 19

21. CLEANING OF THE VENTILATOR´S OPERATION AREA ............................................................................ 20

22. CLEANING OF RADIAL IMPELLER’S VANES ................................................................................................. 21

23 SUMMARY OVERVIEW OF REGULAR CLEANING OF PARTICULAR BOILER PARTS .......................... 22

24. OVERVIEW OF VENTILATORS USED IN PARTICULAR BOILERS ............................................................. 22

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1. INSTALLATION AND CHIMNEY PARAMETERS

By installation of chimney connection to boiler it is necessary to care about correct outlet of flue
gas and eventual condensate, not to let it fall back into the boiler. For this purpose you can use
the T-piece, see picture below. Exhaust connection comes into the chimney vent. If it is not
possible to connect boiler to chimney vent directly, then the adequate extension of exhaust
connection has to be as short as possible, and no longer than 1 m, without additional heating
surface and it has to go up in direction to the chimney. Exhaust connections must not go
through foreign dwelling or utility units. Internal cross-section of the exhaust connection must
not taper in direction to the chimney. Try to minimize usage of elbows by installation. Chimney
has to be constructed in conformity with the norms STN 73 4201 and STN 73 4210.

Prescribed values of the correct height and
cross-section chimney dimensions:

DPX15, DPX25, DPX35, DPX45
20×20 cm min height 7 m

 20 cm min. height 8 m
15×15 cm min height 11 m

 16 cm min height 12 m

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2. VERIFICATION OF THE CORRECT CHIMNEY PARAMETERS

Correct boiler function significantly depends on quality chimney with correct parameters.
Minimum chimney diameter is 150 mm, however, 200 mm is recommended. Chimney has to be
designed or regulated to achieve prescribed draught of 23–30 Pa at nominal boiler flue gas
temperature value.

ATTENTION! Chimney which does not fulfil required parameters may cause limited

boiler function (Low flue gas temperature, low output, excessive condensation of
tubular exchanger, shorter life-time, even total boiler disfunction)! Guarantee does
not relate to the boiler installed with the chimney of incorrect parameters.

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3. DEVICES FOR CHIMNEY DRAUGHT MEASURING

It is possible to check correct chimney draught by some types of analysers or by exact
differential pressure-gauge. On the picture there is draught reducer too, also useful for correct
draught setting.

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4. OPERATION PRESSURE IN HYDRAULIC CIRCUIT

Operation pressure must not exceed limit of 2,5 bar.

ATTENTION! Expanse vessel and safety valve must be installed in the system.

5. BOILER PROTECTION AGAINST EXCESSIVE
CONDENSATION – ATTACK-OVENTROP

For correct boiler function and its long life-time it is necessary to keep return water temperature
always higher than 65 °C. Set boiler thermostat to 80-85 °C, which is ideal boiler operation
temperature. Boiler guarantee is valid only in case that the ATTACK-OVENTROP device was
installed into the hydraulic system.

ATTENTION! If the ATTACK OVENTROP device is not installed, it may cause shorter

boiler life-time.

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6. CORRECT ASHTRAYS POSITION

Ashtray position is important for correct boiler operation. It is not necessary to take out the
ashtray while cleaning, but it is important to check its correct position sometimes. Ashtray has to
be completely shifted rearwards.

7. FUEL

Use suitable fuel for wood gasifying boiler operation – soft or hard wood logs. Wood moisture
has to be in range of 12–20 % (related to time of min. 15 month of free storing at the fresh air).
Alternatively it is possible to use wood briquets of cylindrical shape with opening in the middle.

ATTENTION! Wood with moisture exceeding 20 % shortens boiler life-time, causes

lower output, excessive condensation in tubular boiler exchanger, which may
require additional out-of-warranty service!