11
Technical features and dimensions
(*) Minimum dimensions for boiler room access.
(**) Pressure drops corresponding to a thermal variation of 15K.
1 Panel board
2 Burner connection flange
3 Smoke chamber cleaning door
4 Flame control warning light
T1 Heating flow
T2 Heating return
T3 Expansion vessel connection
T4 Boiler drain
T5 Chimney connection
T6 Burner connection
T7 Condensation drain
DETAIL FOR DOOR DRILLING
TST 680 2S÷TST 870 2S
TRISTAR 2S
Model
DIMENSIONS
A
mm
1122
1122
1122
B
mm
1605
1800
1995
1432
1432
1432
C
mm
190
190
190
D
mm
195
195
195
E
mm
F
mm
190
190
190
G
mm
765
765
765
H
mm
480
480
480
I
mm
1989
2184
2379
L
mm
125
125
125
1540
1540
1540
M*
mm
298
298
298
N
mm
435
630
825
O
mm
440
440
440
P
mm
1020
1020
1020
Q*
mm
1504
1699
1894
R*
mm
Furnace
output
kW
510÷680
585÷780
652.5÷870
CONNECTIONS
T1
T2
UNI 2278 PN16
T3
UNI 2278 PN16
T4
UNI 228
T5
Øi
mm
T6
Ø
mm
DN 125
DN 125
DN 125
DN 65
DN 65
DN 65
G 1¼
G 1¼
G 1¼
350
350
350
270
270
270
TST 680 2S
TST 780 2S
TST 870 2S
TRISTAR 2S
Model
Furnace
output
kW
530.4÷713.9
608.4÷818.9
678.6÷913.4
Boiler
capacity
l
671
753
836
Flue gas
pressure
drop(
**
)
m.w.c.
0.12÷0.21
0.15÷0.27
0.19÷0.33
27.8÷49.4
30.7÷54.5
33÷58.6
Flue gas
pressure
drop
mm.w.c.
Maximum
operating
pressure
boiler
bar
6
6
6
Weight
kg
1435
1557
1656
TRISTAR 680÷870 2S
fig. 8
fig. 9
C emento refrattario
F ibra ceramica
P ias tra porta-bruciatore cieca 330x330
G uarnizione pias tra porta-bruciatore 330x330
ø
2
70
ø
2
70
150
TST 680 2S
TST 780 2S
TST 870 2S
T7
Øe
mm
40
40
40
C
D
A
Q
H
R
200
G
T4
L
T5
M
F
B
E
T2
N
O
P
T3
T1
I
H
T6
T4
T5
T2-T3-T1
1
2
3
4
T7
T7
Blind burner plate 330x330
Burner plate insulation gasket 330x330
Refractory cement
Ceramic fibre