9
1.
Charging flap
2.
Grate doors
3.
Ash-pan doors
4.
Air throttle
5.
Mobile grate lever
6.
Fan
7.
Return pipe
8.
Top washout cover
(20 and 25kW boilers)
9.
Supply pipe
10.
Ash pan washout cover
11.
Straight-through valve G½ muff
12.
Tech ST-81 controller
(10 to 30kW boilers)
13.
G½ muff
Fig.1a.
Unica SENSOR 25 kW boiler
– description of main parts.
1
2
3
4
5
6
7
8
9
10
11
12
13
