8
2.2 - Main cOMpOnenTs
The XC-K3 boilers are equipped with a cylindrical furnace in
witch the combusted gases that reach the bottom take the smoke
pipes of the second turn, having reached the front, the burnt
gases are conveyed through the door into the pipes of the third
turn to reach the chamber smoke back and then to the fireplace.
During burner operation, within the boiler’s power range, the
combustion chamber is always under pressure.
For the value of this pressure see the tables
of cap. 2.4, in the column “Load losses
smoke side “.
The chimney must be calculated in such a way that
at its base is not detected any
positive pressure.
KEY
N°
description
1
Furnace
2
flame sight glass
3
Door with flame sight glass
4
Smoke chamber
5
Body insulation
6
Panel board
7
Smoke tubes 2 Turn
8
Smoke tubes 3 Turn
m
T1
Flow
rbt T2
Low temperature return
rat T3
High temperature return
T4
Expansion vessel
T5
Boiler drain
T6
Burner connection
T7
Chimney connection
T8
Condensation drain
2
TECHNICAL FEATURES AND DIMENSIONS
2.1 - TECHNICAL FEATURES
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
page of the www.unicalag.it website
smoking section tubes
Note:
For operation with oil burner, when ordering
specify it (for OIL burner). So as to foresee on
the smoke tubes the treatment with Nanoprom
coating.
4
1
2
6
3
5
Rbt
T2
Rat
T3
M
T1
T4
T5
T8
T6
T7
11
4 1
1 2
1 3
3 1
3 2
4 2
Selez.
Servizi di Riscaldamento
Seleziona la Funzione
Esci
8
a b
7
