Ponast KP 21 - Boiler Structural Components and Features; Boiler Body Construction

Automatic boiler for wood pellets
Instructions for installation and operation
3 TECHNICAL DATA OF THE BOILERS
Table number 1: Thermal and technical parameters of products
Parameter Unit KP 10/10E KP 20/20E KP 50/50E KP 11/11E KP 21/21E
Rated output kW 14,9 25 48 17 29
Output range kW 4,5 – 14,9 7,25 - 25 14,5 - 48 5 - 17 8 - 29
Fuel consumption kg x hour
-1
~1,25 - 3,7 ~1,81 - 6,25 ~3,9 - 12,9 ~1,3 - 4,0 ~2,0 - 6,8
Efficiency (rated output) % 86 91,1 92,2
Efficiency (minimum output) % 85,2 90 91
Temperature of combustion products °C 150 – 205 133 - 176 108 - 158
Class of the boiler 3
Table number 2: Solid harmful substances in combustion
Parameter Unit KP 10/10E KP 20/20E KP 50/50E KP 11/11E KP 21/21E
Average mass flow rate
stiff elements pollutions
at rated power
g/hour
1,1 1,9 1,3 0,6 1
Average mean value
stiff elements pollutions
in dry air at rated power
mg/m
3
22,3 37,2 20,4 21 35
Table number 3: Technical parameters of products
Parameter Unit KP 10/10E KP 20/20E KP 50/50E KP 11/11E KP 21/21E
Weight (complete boiler) kg 210 270 490 255 335
Water content l 55 70 105 55 70
Fume duct diameter mm 130 150 160 130 150
Connections: heating and return water Js
G 1 1/2"
Heating surface m
2
1,8 2,1 2,4 1,8 2,1
Dimensions mm 360x1065x1420 497x1065x1420 745x1285x1630 477x 980x1435 614x980x1435
Working overpressure of water bar up to 2,5
Required draught mbar 0,1 – 0,2
Recom.operating temp.of heating water °C 60 – 80
The least temp.of incoming water °C 55
Table number 4: Electrical parameters of products
Parameter Unit KP 10/10E KP 20/20E KP 50/50E KP 11/11E KP 21/21E
Connecting voltage 230 V AC ± 10%, 50 Hz ± 2 Hz
Electric input (2 motors, fan) W 180 210 180 210
Electric protection of the control unit --- IP 65
Electric protection of the boiler's wiring --- IP 20
Guaranteed fuel for the products is represented by wood pellets the parameters of which are given in the
following table.
Table number 5: Fuel and its parameters
Wood pellets diameter 6,0 - 8,5 mm
Caloric value approximately 16-18 Mj / kg
Water content up to 10 %
Ash content up to 1 % ( 0,8 – 1,0% )
Bulk weight 0,6 – 0,64 Kp / dm3
plastic bags á 15 – 25 kg,
giant bags Big Bag á 800 - 1100 kg
Fuel delivery systém
cistern
6