Viessmann KOB PYROTEC, Technical Manual

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2.2 Specification
Specification
Trade name PYROTEC grate combustion
Rated output 390 530 720 950 1250
Part no.: 7423 674 7423 675 7423 676 7423 677 7423 678
Output data
Rated output kW 390 530 720 950 1250
Continuous output
*1 kW 390 530 720 950 1250
Minimum output Q
min
*2 kW 97 132 180 238 312
Output with woodchips W 45
*3
kW 380 515 700 920 1210
Heating data
Content on hot gas side l 1540 2280 2830 4050 5210
Permissible shutdown temperature of the high
limit safety cut-out °C 100 100 100 100 100
Minimum return temperature °C 65 65 65 65 65
Grate ash container capacity l 240 240 240 240 240
Ash container capacity, flue gas dust extractor l 240 240 240 240 240
Boiler water content l 1150 1444 1861 1943 2482
Water-side pressure drop (diff. 15 K) mbar 13 23 43 26 45
Permiss. operating pressure
Test pressure bar 7.8 7.8 7.8 7.8 7.8
Maximum operating pressure bar 6 6 6 6 6
Heating surface m 2 26.32 42.50 55.50 74.80 91.00
CE designation CE CE CE CE CE
Boiler class to DIN EN 303-5 3 3 3 3 3
Overall dimensions
Total length mm 4370 4870 5257 5447 5992
Total width (boiler) mm 1274 1247 1380 1612 1612
Total width (boiler with supply screw conveyor) mm 2382 2382 2488 2852 2852
Total height (boiler) mm 2378 2536 2834 3035 3230
Total height (boiler with induced draught fan) mm 3186 3186 3378 3452 3717
Weight
Boiler kg 1680 2707 3291 4874 5563
Combustion block kg 2970 4238 4953 5779 6520
Displacer rods kg 394 394 394 538 538
Flue gas fan kg 60 62 78 82 107
Supply screw conveyor kg 153 153 153 190 190
Total dry weight kg 5230 7554 8869 11463 12919
Total wet weight kg 6380 8998 10730 13406 15400
Max. power consumption
Ignition unit W 1600 1600 1600 1600 1600
Electrical connections (total) W 5410 7020 8120 9350 11150
During heating operation W 2880 3570 4560 5170 6790
Supply screw conveyor W 1100 1500 1500 2200 2200
Primary air fan 1 W 140 300 300 480 480
Primary air fan 2 W 900 900 900 900 900
Secondary air fan W 900 1500 1500 1850 1850
Flue gas fan W 1100 1100 2200 2200 4000
Grate drive W 120 120 120 120 120
Electrical power consumption with Q
N
W 2880 3570 4560 5170 6790
Electrical power consumption with Q
min
W 2340 2900 3710 4150 5470
Boiler connections
Boiler flow and return DN 100 100 100 125 125
Extinguishing water connection R ¾ ¾ ¾ ¾ ¾
Boiler drain and fill valve R 1½ 1½ 1½ 1½ 1½
Safety heat exchanger R 4 x ½ 4 x ½ 8 x½ 8 x ½ 8 x ½
Sensor well for TS R ½ ½ 2 x ½ 2 x ½ 2 x ½
*1 Levelled output as base load boiler in continuous operation with pneumatic cleaning
*2
Q
≥
Q
min
: Output operation modulating control (variable output control)
Q
≤
Q
min
: Low load with ON Q
min
/ OFF (Stop and Go operation)
*3 Wet fuels: > W45 further limitation-related output, efficiency and control characteristics
PYROTEC
(cont.)
8
PYROTEC
2
5822 511 GB