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  • Technical details

DC32GS

Gasification boiler for wood

  • Rated power 32 kW

  • Boiler efficiency 89,3 %

  • Emission class nr. 5 (Ecodesign)

  • Log lenght 530 mm

Wood boilers ATMOS Generator DC15GS, DC20GS, DC25GS, DC32GS and DC40GS with a large application space lined with ceramics for optimal combustion quality. It’s a real wood gas generator.

Advantages of gasification boilers for piece wood ATMOS

  • Possibility to burn large pieces of wood 
  • Large fuel tank – long burning time
  • High efficiency 85 to 90 % depending on the type – primary and secondary air is preheated to a high temperature
  • Ecological combustion – boiler according to EN 303-5:2012 class 5, EKODESIGN 2015/1189
  • Exhaust fan – dust-free ash removal, smoke-free boiler room
  • Cooling loop against overheating – without the risk of damaging the boiler
  • Automatic shutdown of the boiler after the fuel burns out – flue gas thermostat
  • Convenient ash removal – large ceramic combustion chamber for ash (cleaning once a week)
  • Boiler without tubesheet – easier cleaning
  • Small size and low weight
  • Choice of door left / right
  • High Quality

Installation

ATMOS boilers must be connected via the LADDOMAT 22 or ESBE thermoregulation valve (three-way valve controlled by actuator in case of using electronic regulation ATMOS ACD 03/04) to achieve keeping the minimum temperature of water returning to boiler at 65 °C. The temperature of water exiting the boiler must be permanently kept between 80 – 90 °C. The default configuration of all boilers includes a cooling circuit to prevent overheating. We recommend installing boilers with accumulation tanks.

 

Boilers regulation

Electromechanical – Power is controlled with a safety valve operated with the draught regulator, FR 124 type, which automatically opens or closes the safety valve according to a set output temperature of water (80 – 90°C). When setting the power regulator, much attention should be paid because the regulator has another important function other than power regulation – it also secures the boiler against overheating. A controlling thermostat located on the boiler panel regulates the fan according to a set temperature (75 – 85 °C). A temperature lower by 5 °C should be set on the controlling thermostat rather than on the FR 124 draught regulator.
The boiler runs at a reduced output even without a fan – heating is not lost when the electric power fails. At up to 70 percent of its rated output, the boiler can be operated without a ventilator.

 

Boiler control panel with standard regulation

Panel composition:
Main off switch, safety thermostat, thermometer, regulator thermostat and combustion thermostat

Electro-mechanical regulation is an optimal solution for easy management of the operation of the boiler (ventilator). The design of the panel with standard regulation is a basic design for all produced boilers.

 

 

Equithermal regulation ACD 03

Each boiler can be equipped with a modern touch electronic control ATMOS ACD 03 for controlling the entire heating system depending on the outdoor temperature, room temperature and time. This regulation is able to control the boiler itself with a fan with many other functions.

Boiler control panel with equithermal regulation ATMOS ACD 03

 

 

Equithermal regulation ACD 04

The boilers DC25GS, DC32GS can be ordered from the factory with built-in ATMOS ACD 04  touch screen control.The boilers are allready equipped with all necessary sensors.This unit is designed for comfortable control of the hot water system of the heated building. The controller contains functions for direct control of the boiler, boiler circuit, three heating circuits, domestic hot water, solar, etc.

Boiler control panel with equithermal regulation ATMOS ACD 04

 

 

Technical details

 

Description of the boiler drawing
1. Boiler body 22. Draught regulator – HONEYWELL FR124
2. Filling door – upper 23. Cooling loop protecting against overheating
3. Ashtray door – lower 24. Fan control thermostat (boiler)
4. Exhaust fan (S) 25. Door panel – Sibral
5. Heat-resistant fitting – nozzle 26. Door seal – cord 18 x 18
6. Control panel 29. Capacitor for exhaust fan – 1μF
7. Safety thermostat 33. Flue gas brake (DC32GS, DC40GS)
8. Control flap 35. Waste gas thermostat
9. Heat-resistant fitting – side of the combustion chamber 36. Safety thermostat (Caution – when overheating push on)
10. Heat-resistant fitting – spherical space L + R 39. Air braker along spherical space
11. Nozzle seal 42. Primary air regulation
12. Heat-resistant fitting – half-moon 43. Secondary air regulation
13. Firing up valve
14. Heat-resistant fitting – rear part of spherical space
15. Cleaning lid K  – the flue-gas duct neck
17. Fire valve stem L  – the boiler water outlet
18. Thermometer M  – the boiler water inlet
19. Frame screen N  – filling valve pipe sleeve
20. Switch with an indicator light P  – sleeve for a sensor of the valve which regulates the cooling loop 

 

 

Boiler dimensions (mm)
  DC15GS DC20GS DC25GS DC32GS DC40GS DC50GSX DC70GSX
A 1280 1280 1280 1280 1434 1563 1686
B 670 758 959 959 959 1042 1268
C 678 678 678 678 678 678 678
D 950 950 950 950 1099 997 1086
E 150 (152) 150 (152) 150 (152) 150 (152) 150 (152) 150 (152) 180
F 69 69 69 69 69 70 58
G 185 185 185 185 185 184 184
H 1008 1008 1008 1008 1152 1287 1407
CH 256 256 256 256 256 256 256
I 256 256 256 256 256 256 256
J 6/4″ 6/4″ 6/4″ 6/4″ 2″ 2″ 2″

 

 

Specification
Boiler type
  DC15GS DC20GS DC25GS DC32GS DC40GS DC50GSX DC70GSX
Rated power kW
15 20 25 32 40 49 70
Heating surface m2 1,8 2,7  2,9  3,2  3,5  4,3 
Fuel shaft volume dm3 (l)
66 80 120 120 160 210 280
Filling hole dimensions mm  450 x 260  450 x 260   450 x 260   450 x 260   450 x 260   450 x 310 450 x 310 
Prescripted chimney draft Pa/mbar
16/0,16 20/0,20 23/0,23 25/0,25 25/0,25 25/0,25 26/0,26
Max. working water overpressure kPa/bar 250/2,5  250/2,5   250/2,5  250/2,5  250/2,5   250/2,5   250/2,5  
Boiler weight kg
302 343 431 436 485 538 690
Gas-outlet pipe diameter mm 150/152 150/152 150/152 150/152 150/152 150/152 180
Ingress protection of electric parts IP 20 20 20 20 20 20 20
Electric input W 50 50 50 50 50 50 50
Efficiency over the entire performance range %
91,2 % 90,6 % 90,3 % 89,3 % 88,8 % 90,6 % 90,3 %
Boiler class   5 5 5 5 5 5 5
Energy efficiency class   A+ A+ A+ A+ A+ A+ A+
Waste gas temperature at nominal output °C 134 166 158 171 250 165 161
Waste gas combustion products flow weight at nominal output kg/s 0,010 0,012 0,015 0,018 0,022 0,025 0,034
Specified fuel (preffered)   Dry wood with a calorific value of 15 – 18 MJ/kg-1, water content 12 – 20 %, diameter 80 – 120 mm
Average fuel consumption for the heating season kg.h-1 4,1 5,5 6,8 8,6 10 13 18
Wood lenght mm
250 330 530 530 530 530 730
Combustion time at nominal output Hours 2 2 3 2 3 3 3
The volume of water in the boiler l
56 64 80 80 90 120 170
Boiler hydraulic loss mbar  0,20 0,22 0,22 0,23 0,22 0,23 0,22
Minimum buffer tank volume l 500 500 500 500 500 500 750
Connecting voltage V/Hz  230/50
Minimum return water temperature during operation   65 °C
EKODESIGN