9
Technical features and dimensions
TRISTAR 3G 185÷380
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
Nominal
output
kW
138,7÷185
180÷240
225÷300
285÷380
T1
T2
UNI 2278 PN16
T3
ISO 7/1
T4
ISO 7/1
T5
Øi
m m
T6
Ø
m m
DN 65
DN 65
DN 80
DN 80
Rp 1 ½
Rp 1½
Rp 2
Rp 2
Rp ¾
Rp ¾
Rp ¾
Rp ¾
200
200
250
250
180
180
180
180
TST 3G 185
TST 3G 240
TST 3G 300
TST 3G 380
TRISTAR 3G
Model
Heat
input
kW
145,7÷195,3
188,6÷252,7
235,2÷315,3
297,3÷398,5
Boiler
capacity
l
291
322
413
479
Pressure
drops on
water side (**)
m c.a.
0,09÷0,15
0,19÷0,33
0,12÷0,21
0,16÷0,28
10,9÷19,5
13,6÷24,3
16÷28,4
18,4÷32,7
Flue gas
pressure
drops
mm c.a.
Boiler max.
operating
pressure
bar
5
5
5
5
Weight
kg
--
--
--
--
TRISTAR 3G
Model
TST 3G 185
TST 3G 240
TST 3G 300
TST 3G 380
A
m m
860
860
890
890
B
m m
1080
1210
1275
1470
1182
1182
1352
1352
C
m m
190
190
190
190
D
m m
140
140
140
140
E
m m
F
m m
155
155
155
155
G
m m
757
757
897
897
H
m m
775
775
915
915
1315
1315
1470
1470
M*
m m
215
215
255
255
N
m m
210
340
285
480
O
m m
250
250
315
315
P
m m
750
750
780
780
R*
m m
981
1111
1177
1372
S
m m
(*) Minimum dimensions for boiler room access.
(**) Pressure drops corresponding to a thermal drop of 15K.
fig. 5
fig. 4
ø 180
Lana di roccia
Fibra ceramica
ø 150
95
Piastra porta-bruciatore cieca 250x250
Guarnizione piastra porta-bruciatore 250x250
A
H
G
C
D
T6
T4
T5
T2
B
F
N
E
H
T4
T6
O
P
T5
T1-T3-T2
M
T3
T1
S
R
1
4
2
3
T7
T7
Øe
m m
40
40
40
40
CONNECTIONS
DIMENSIONS
DETAIL FOR DOOR DRILLING
TST 3G 185÷380
Blind burner plate 250x250
Burner plate insulation gasket 250x200
Mineral wool
Ceramic fibre
