6
1.3
Technical data
RTT CAST IRON BOILER
RTT 76
RTT 93
RTT 110
RTT 128
RTT 145
UM
Number of sections
5
6
7
8
9
pieces
Nominal heat output
76
93
110
128
145
kW
65,000
80,000
95,000
110,000
125,000
kCal/h
Nominal heat input
82
101
120
138
157
kW
Maximum operating temperature
90
°C
Temperature adjustment range
30-90
°C
Gas side resistor
1.40-1.65
1.57-1.82
1.75-2.05
2.00-2.30 2.25-2.55
mbar
Maximum operating pressure
6
bar
Boiler water capacity
55
65
75
85
95
litres
0.055
0.065
0.075
0.085
0.095
m
2
Diameter flue pipe fitting
150
180
mm
Combustion chamber dimensions
width X length
336
mm
L
550
670
790
910
1,030
mm
Water input-output coupling
G 2
DN (*)
Boiler gas volume
64.1
78.36
92.62
106.88
121.14
dm
3
(lt.)
0.064
0.078
0.093
0.107
0.121
m
2
Combustion chamber gas volume
45.94
56.16
66.38
76.6
86.82
dm
3
(lt.)
0.046
0.056
0.066
0.077
0.087
m
2
Safety limit thermostat
110
°C
Type of fuel
I
2
H
gas
Extra light Fuel Oil
comb.
liquid
Flue gases output temperature
full load
184-187
179-185
175-182
170-177
169-174
°C
partial load
165-172
164-170
162-168
160-165
155-160
°C
Mass flow of the flue gases
full load
127
156
185
214
243
kg/h
partial load
76
93
111
129
146
kg/h
Boiler dimensions
Width X length
550 x 820
mm
L
800
922
1,044
1,166
1,288
mm
Heat loss in stand-by
0.32
0.29
0.27
0.23
0.21
%
2,246
2,506
2,770
2,732
2,835
kCal/h
Diameter burner hole
110
mm
Type of burner
With short head
Flue effect
5
Pa
Boiler net weight
285
330
377
425
470
Kg
