Pelltech PV 20a Bedienungsanleitung
Pellet burner PV 20a
User manual
PV 20a
Table of content
Table of content.....................................................................................................................................2
Description.............................................................................................................................................4
Fuel.....................................................................................................................................................7
Installation..............................................................................................................................................7
Boiler requirements................................................................................................................................8
Burner............................................................................................................................................... 0
Pellet container................................................................................................................................
External auger.................................................................................................................................. 2
Electrical connections....................................................................................................................... 2
Operation............................................................................................................................................. 4
Starting............................................................................................................................................. 5
Log.................................................................................................................................................... 5
Settings............................................................................................................................................. 6
Info Menu......................................................................................................................................... 7
Languages......................................................................................................................................... 7
Refilling fuel...................................................................................................................................... 8
Maintenance.................................................................................................................................... 9
Working principle.................................................................................................................................2
Testing..............................................................................................................................................2
Loading.............................................................................................................................................2
Igniting..............................................................................................................................................2
Preburn.............................................................................................................................................2
Burning.............................................................................................................................................22
Auger control................................................................................................................................22
Fuel level detection......................................................................................................................22
Output power levels ....................................................................................................................22
Hold flame........................................................................................................................................22
End burn...........................................................................................................................................23
End blow...........................................................................................................................................23
Controller board description................................................................................................................24
Problems and solutions........................................................................................................................26
Warranty..........................................................................................................................................27
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PV 20a
Safety precautions
Do not start the burner before it is connected to the boiler and the boiler is connected to the
chimney.
It is recommended to wear a respirator while handling pellets.
The boiler room where the burner is installed must fulfill all rules and recommendations given by
authorities.
All electrical connections must be done by trained professionals.
No flammable materials must be stored near the burner.
Warnings
Changing the construction of the burner without written permission from the
manufacturer is forbidden.
Use only spare parts provided or approved by the manufacturer in order to avoid
any damage to the burner and dangers resulting from it
Welding is allowed only after disconnecting the burner from electric supply. The
circuit board must be removed from the burner.
Do not open any boiler door while the burner is in operation.
The burner complies with following directives and standards
Directive 2004/ 08/EC
Directive 2006/95/EC
Directive 200 /95/EC
Directive 2006/42/EC
EN 5270 2008
EN 230 2005
EN 60370-2-5 2002
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PV 20a
Package content
The burner is shipped with following components included:
. Grate
2. Burner
3. Brackets for hose ( x)
4. Flange
5. Ceramic seal
6. 7-pole boiler connector
7. Hose
8. User manual
Description
PV 20a is a pellet burner that is intended to be used with 6 or 8mm wooden pellets. You cannot use
any other fuel to run this burner.
The unique construction of PV 20a allows it to be used with different boilers: liquid fuel, solid fuel
and universal boilers. The PV 20a burner is connected to the boiler with a 90 mm flange (similar to oil
burners).
The burner is equipped with a safety thermostat, a melting chute, temperature sensor and auxiliary
battery for protection against back-burning.
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PV 20a
Burner main components are shown on Figure
1. Burning chamber
. Feed screw
3. Safety cut off thermostat
4. Mains transformer
5. User interface joystick
6. User interface screen
7. Auxiliary battery
8. Connectors
9. Feed screw motor
10. Fan
11. Fuel level sensor
1 . Mounting nut
13. Flame detector
14. Igniter
15. Grate
Figure 1 Burner main components
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PV 20a
Figure Dimensions
Table 1 Specification
Unit PV 0a
L total length mm 530
L1 burner body length mm 230
L burning chamber length mm 70
⌀D burning chamber diameter mm 46
⌀D1 burning chamber neck diameter mm 88.9
⌀D internal feeder inlet diameter mm 60
H total height mm 250
H1 burner housing height mm 200
W total width mm 220
W1 burner housing width mm 204
Mass kg .2
Supply voltage VAC 220-240
Power max W 570
Power average W 25 - 40
Power at standby W 7
Noise dB 52
Emission class1- 5
Operating temperature Co0-60
Nominal heat input kW 20
Min heat input kW 0
. According to EN 5270
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PV 20a
Fuel
PV 20a uses premium wooden pellets as fuel. Wood pellets are concentrated and homogenized fuel
made from sawdust and cutter shavings. Pellets are pressed with high temperature. No extra
materials are added, pellets are held together by a natural ingredient found in wood – lignin. Pellets
are CO2-neutral, renewable fuel. Pellets must be stored in a dry and ventilated room. It is
recommended to wear a respirator when handling pellets.
Only premium class pellets can be used with PV 20a. Refilling must be carried out before the storage
runs empty. In case it happened, burner has to be restarted and the loading time can be up to 20
minutes that external auger has enough time to refill itself.
Table Pellet properties
Raw material sawdust and cutter shavings
Calorific value 4700-5 00 kWh/ton
Volume weight ca 650-670 kg/m3
Volume of 1 ton .5- .6 m3
Diameter 6- 0 mm
Length 3-5 x diameter
Water content 8- 0 %
Ash content Ca 0.5%
To replace 1000 l light oil ca 2 tons or 3 m3
Installation
You will need the following tools in order to install the burner:
•Spanner no. 3 for fixing the flange of the burner to the boiler
•Spanner no. 0 for connecting the body of the burner with the burning camber
•Cross-head screwdriver for fixing the cover of the burner
•4 mm hex wrench for fixating the boiler to the flange
In order to install the burner, the boiler must correspond to the following requirements:
•The door of the boiler must have a 90 mm opening (placement opening for the oil burner).
•The thickness of the boiler door must be less than 00mm
•The construction of the boiler must make it possible to open the door of the boiler with the
burner connected and removing ash from the furnace. If the door of the boiler is too narrow
for opening it with the burner, then extra hinges must be installed.
•If there is not sufficient (less than 5Pa) negative pressure in the furnace, a draught fan should
be installed for the exhaust gases.
•The boiler room where the burner is installed must fulfill all rules and recommendations
given by authorities.
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PV 20a
•The boiler must be positioned in a way that there is enough space for cleaning the burner,
the boiler and the smoke pipe and removing the ash.
If flue gas temperature at the top of the chimney is less than 80Co, there is a risk of condensation. In
this case a pipe should be installed throughout the length of the chimney.
Note: It is recommended to use a flue gas analyzer for adjusting the burner. The burner must be
adjusted using the flue gas analyzer also when you change the size or the quality of the pellets.
Boiler requirements
Pellet burners need regular cleaning and therefore boiler construction must allow the door to be
opened without removing the burner. The minimum size of opening in boiler depends on the
position of door hinges and vice versa. Figure 3 below illustrates the situation. Point C is critical.
In order to keep door width minimum and boiler opening small, a double hinge solution can be used.
As double hinges add another degree of freedom, door must be fastened on both sides. Slide-out
doors with guide rails is also an option.
Figure 3 Hinge position and boiler opening size considerations
Figure 4 Double hinges
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PV 20a
Boiler firebox length L (Figure 5) should be at least 2,5 x the length of the burning chamber. For PV
20a, minimum of 420mm is acceptable (leaving L approx. 250mm). The height should be enough to
leave H below the burner about 00mm for ash.
Minimum dimensions L and H for PV 20a: L≥420mm; H≥350mm.
Figure 5 Boiler firebox requirements
Burners are mounted to door using supplied oil burner flange. Bolt hole circle diameter and bolt sizes
can be customized by using custom flanges. D and D2 given in Table 3 are only valid with supplied
flanges.
Table 3 Mounting holes for boiler door
Unit
⌀D hole for burning chamber neck mm 90
⌀D1 flange bolt ring diameter mm 30.. 50
⌀D bolt holes mm 8..9
Figure 6 Mounting holes with supplied flanges for boiler door
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PV 20a
Burner
In order to install the burner properly, you must go through the following steps:
. Remove the cover of the burner by loosening 4 screws of the cover. There is no need to remove
the screws.
2. Remove the burning chamber from the burner by releasing the M6 nut that connects the halves of
the burner. Separate the halves of the burner by pulling the burning camber and slightly rotating it at
the same time.
3. Fix the flange (2) of the burner to the door of the boiler ( ). Make sure that the opening of the
flange and the opening of the boiler door are aligned.
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