PV700a / PV1000a pellet burners
p
11/ 59
DK9401B1 www.pelltech.eu
No
Name
Description
1
Burning
chamber
The part of the burner that is inside the boiler and where pellets are burnt.
2
Burner body
The part of the burner that is outside the boiler and where burner’s control and
pellets supply takes place.
3
User interface
Control board with screen, navigation buttons and indication lights.
4
Control unit
Electrical- and control panel what contains inverters, fuses, relays, main
controller board and other control devices
5
Water sprinkler
Sprinkler system will spray water to extinguish the fire in feeder’s tube in case
of back burning. The sprinkler system is activated only when the temperature
of feeder auger rises dangerously high.
6
Grate cleaning
motor
Linear motor moves the grates in burning chamber and pushes ash out from
burning chamber. This cleaning cycle is made periodically. The interval between
cleaning cycles can be controlled by PAR48. In each cleaning cycle, the linear
motor pulls grates back then pushes the grates completely out. The linear
motor has 75mm stroke and end switches for stop. Linear motor current limit
can be set by PAR47. Linear motor is protected by fuse F10 what is installed on
the controller board (board version BBB v2.1).
7
Igniter
Igniter´s purpose is to ignite loaded fuel making the burning process start.
Igniter is installed on the burner together with igniter holding pipe. PV700 has
2 igniters and PV1000 4 igniters.
8
Brick
temperature
sensor
A sensor to adjust bricks’ heat up speed according to temperature rise. Brick
temperature rise speed control helps to reduce thermal stress of bricks and
prolong their lifetime.
9
Cleaning hatch
Hatch below burning chamber to ease the removal of ash under the grates.
10
Grates support
frame
Holds moving and stationary grates in correct position.
11
Grates
Burning of pellets takes place on the cast iron grates. Air needed for burning is
blown to burning chamber via holes with different size. Burner has moving and
fixated grates. Moving grates move periodically to clean the burning chamber.
12
Fire bricks
Burning chamber is surrounded with heat resistant from up and sides. Bricks
are necessary for proper airflow and combustion.
13
Flame sensor
Photocell´s purpose is to recognize flame in the burning chamber.
14
Level sensor
Optical fuel level sensors recognize the fuel level in the vertical pipe. Fuel is
recognized when pellets pass the optical beam between sensors.
15
Combustion air
fans
Left – primary
Right –
Primary fan blows main burning air needed for ignition, burning and
gasification of the fuel.
Secondary fan blows air through burning chamber back-wall and holds burning
Table 2 List of main components