KWB Easyfire User Manual

TTD-EF2_EN.xls 07.06.2011 Page 1 of 2
Type
EF2 S / EF2 GS / EF2 V 8 121522253035
Rated power kW 8,0 12,0 15,0 22,0 25,0 30,0 34,9
Partial load kW 2,4 3,5 4,4 6,4 7,3 8,7 10,1
Boiler efficiency at rated power % 94,9 94,0 94,3 95,0 95,2 95,4 95,7
Boiler efficiency at partial load % 88,5 89,4 90,0 91,5 92,4 93,8 95,3
Fuel thermal output at rated load kW 8,4 12,8 15,9 23,2 26,3 31,4 36,5
Fuel thermal output at partial load kW 2,7 4,0 5,0 7,2 8,1 9,6 11
Boiler class according to EN 303-5 3333333
Water side
Water content l 40 40 52 52 78 78 78
Water connection diameter Inches 11115/45/45/4
Water connection diameter DN 25 25 25 25 32 32 32
Water-side resistance at 10 K mbar 5,7 12 34,0 55,9 39,1 62,2 66,2
Water-side resistance at 20 K mbar 1,7 3,5 9,5 15,4 10,8 17,1 18,1
Boiler temperature °C 60–80 60–80 60–80 60–80 60–80 60–80 60–80
Minimum boiler-entry temperature
(for installation of the KWB-supplied two-way valve with servomotor)
°C 10 10 10 10 10 10 10
Minimum boiler-entry temperature
(for installation of an external return-flow boost device)
°C 40 40 40 40 40 40 40
Maximum operating pressure bar 3,5 3,5 3,5 3,5 3,5 3,5 3,5
Test pressure bar 4,6 4,6 4,6 4,6 4,6 4,6 4,6
Flue-gas side
Combustion chamber temperature
Combustion chamber pressure mbar -0,2 -0,2 -0,2 -0,2 -0,2 -0,2 -0,2
Required draft at rated power mbar 0,10 0,10 0,10 0,10 0,10 0,10 0,10
Required draft at partial load mbar 0,06 0,06 0,06 0,06 0,06 0,06 0,06
Suction available Yes Yes Yes Yes Yes Yes Yes
Flue-gas temperature rated power (for chimney calculation) °C 120 120 120 120 120 120 120
Flue-gas temperature partial load (for chimney calculation) °C 90 90 90 90 90 90 90
Flue gas mass flow at rated power kg/h 21,3 32,3 40,2 58,5 66,4 79,4 92,2
Flue gas mass flow at partial load kg/h 6,9 10,2 12,6 18,2 20,5 24,2 27,8
Flue-gas volume at rated power Nm³/h 16,5 24,9 31,1 45,2 51,3 61,4 71,2
Flue-gas volume at partial load Nm³/h 5,3 7,9 9,8 14,1 15,9 18,7 21,5
Smoke-pipe diameter mm 130 130 130 130 150 150 150
Chimney diameter (approx. values) mm 140 140 140 140 160 160 160
Smoke pipe connection height boiler side mm 750 750 870 870 1050 1050 1050
Incline of the smoke-pipe ° ≥ 3° ≥ 3° ≥ 3° ≥ 3° ≥ 3° ≥ 3° ≥ 3°
Chimney design
Fuel
Calorific value
Density
Water content
Ash content
Length
Diameter
Dust proportion before loading
Raw material
Ash
Ash container volume l 28 28 28 28 28 28 28
Ash container filled kg 27 27 27 27 27 27 27
Ash removal system
Electrical System EF2 V W 559,3 559,3 559,3 559,3 577,3 577,3 577,3
Connection
Electrical System EF2 S W 609,3 609,3 609,3 609,3 627,3 627,3 627,3
Connection
Electrical System EF2 GS W 2189,3 2189,3 2189,3 2189,3 2207,3 2207,3 2207,3
Connection
Electrical system EF2 GS with sample probes W 2389,3 2389,3 2389,3 2389,3 2407,3 2407,3 2407,3
Connection
Suction conveyor type EF2 GS
Max. suction length m
Max. suction head m
Contents storage container for type EF2 GS l 42 42 67 67 90 90 90
Storage container type EF2 V
Contents storage container for type EF2 V l
Weights
Boiler weight EF2 V kg 341 341 370 370 416 416 416
Boiler weight EF2 S kg 326 326 352 352 394 394 394
Boiler weight EF2 GS kg 349 349 378 378 424 424 424
107
Yes
900–1100 °C
Moisture-resistant
0.5–3 cm
0.5–0,6 cm
Pellets of pure wood in accordance with ÖNORM M7135 or DIN Plus
17.5 MJ/kg
>650kg/m³
8–10% by weight
<0.5% by weight
230 V
AC
, 50 Hz, 13 A
5
25
<1% by weight
Pure wood, bark proportion < 15% by weight
230 V
AC
, 50 Hz, 13 A
230 V
AC
, 50 Hz, 13 A
230 V
AC
, 50 Hz, 13 A

KWB Easyfire Specifications

General

Fuel Type	Wood pellets
Cleaning System	Automatic heat exchanger cleaning
Emission Class	5
Nominal Heat Output	10 kW
Type	Pellet heating system
Ash Removal	Automatic
Heating capacity	10 kW
Hopper capacity	15 kg
Flue diameter	130 mm