Application area

ETA log boiler 20 to 60 kW

Just

the way I want it

Heating with wood is extremely economical, even if you don't own a forests of your own. It does not harm the climate, it strengthens the domestic economy and it is crisis-proof as wood is plentyfull in Europe.

Affordable and convenient

ETA has the ideal solution for those who want to use extremely affordable wood fuel and still want to enjoy the full benefits of fully automated comfort. The ETA TWIN consists of two fully-fledged boilers that perfectly complement each other. The ETA SH log boiler can be ordered with a flange on which a fully automated pellet boiler can simply be connected – years later without converting the heating system or the chimney connection.
Intelligent system
Both boilers of the ETA TWIN work together perfectly. It lets you know if the fuel runs out in the log boiler. If no fuel is added over a freely selectable time period, the pellet boiler automatically starts working – until you add fuel again to the log boiler. So your home stays warm even if you are not there for some time.

Just add wood, no matches needed
The log boiler works with half metre wooden logs, which are trimmed in a large fuel chamber. So normally, you only have to add fuel once a day - on very cold days no more than twice. The new wood burns with the embers from the last fire. If embers are no longer available, a bit of paper and a match is all it takes. The firing phase of the boiler starts automatically when the doors are closed.

Technology for the highest efficiency

Different types of wood have different burn properties. A lambda probe detects the condition of the combustion material, the air supply is automatically adapted to the wood quality. The ETA log boiler therefore also gets the highest possible efficiency from mixed wood or wood briquettes.

Only a bit of ash remains
Especially high temperatures are needed to convert the remaining combustible residue into heat energy. Even the toughest wood tar burns in the patented hotzone under the grate combustion at 900 to 1,100 °C. Thanks to the good burn-out, the ETA SH only needs de-ashing every one to two weeks.

entspricht
EU-Normen
BLT Wieselburg
Österreich
TÜV
Süddeutschland Qualitätssiegel
Holzenergie
Schweiz Österreichisches
Umweltzeichen
A look inside the boiler
The way to heat

Put in the wood, start the fire... No problem with the right technology if you want to achieve the highest efficiency for the lowest emissions. In the ETA log boiler, many components work together perfectly to achieve an optimum result and make heating as convenient as possible.
 Insulating door with integrated touchscreen
Large fuel chamber door
Carbonisation gas extraction
 Large fuel chamber
Ignition door
5a.Automatic ignition
Patented hotzone combustion chamber
Optional pellet flange for ETA SH-P 20/30
 Draught fan
Cleaning lever
Primary and secondary air flaps
Lambda probe
De-ashing, cleaning and maintenance from front side

Technical data

Logs		20	30	40	50	60
Rated capacity	kW	20	28,9	40	49.9	57,8
Energy efficiency class**
Log efficiency at full load*	%	91.6	91.5	92.6	93.6	92.4
Fuel chamber	mm	560 mm deep for 0.5 m logs, 340 x 365 mm door opening
Fuel chamber volume	Litres	150		223
Transport dimensions W x D x H	mm	648 x 1,083 x 1,504		748 x 1,147 x 1,684
Transport width with covers removed	mm	617		717
Weight	kg	580	583	791	793	795
Water Content	Litres	110		170
Water-side pressure drop (ΔT=20 °C)	Pa / mWs	190 / 0.019	370 / 0.037	220 / 0.022	340 / 0.034	480 / 0.048
Flue draught required	Pa	>5 a draught limiter is required above 30 Pa
Electrical power consumption at full load*	W	73	60	78	78	89
Recommended buffer volume	Litres	>1,100, optimum 2,000		>2,200, optimum 3,000
Required buffer volume in Germany (1. BImSchV)	Litres	1,100	1,650	2,200	2,750	3,300
Maximum permissible operating pressure	bar	3
Temperature adjustment range	°C	70 - 85
Maximum permissible operating temperature	°C	95
Minimum return temperature	°C	60
Boiler class		5 acc. to EN303-5:2012
Suitable fuels		Spruce and beech up to 20% water content
Electrical connection		1x 230 V / 50 Hz / 13 A