14
GENERAL
DESCRIPTION
RTQ 3S
91(*)
115(*)
166(*)
217(*)
255(*)
318(*)
349(*)
Fuel
GAS
Rated heat input
min
70
90
115
166
217
255
318
kW
max
90
115
166
217
255
318
348
kW
Rated useful heat output Pn
min
66,9
86,6
110,4
159,2
208,8
244,3
304,0
kW
max
84,8
110,2
158,7
206,8
243,0
303,4
332,0
kW
Useful efficiency at minimum Pn
95,6
96,2
96,0
95,9
96,2
95,8
95,6
%
Useful efficiency at maximum Pn
94,2
95,8
95,6
95,3
95,3
95,4
95,4
%
Useful efficiency at 30% max. Pn
95,9
95,1
95,6
96,3
96,5
96,5
96,7
%
Constant pressure drop
< 1,5
< 1,4
< 1,2
Flue gas temperature (∆T)
93
95 ÷ 108
°C
Flue gas mass flow rate
0,040
0,050
0,072
0,094
0,111
0,139
0,151
kg/sec
Furnace pressure
2,0
1,5
1,3
2,2
2,8
3,2
3,9
mbar
Furnace volume
97,4
91,0
138,4
199,1
199,1
298,9
298,9
dm3
Total volume of flue gas side
139,7
163,2
234,3
317,2
325,6
457,9
457,9
dm3
Total surface area for heat exchange
3,62
4,35
6,68
8,59
9,47
12,34
12,34
m2
Volumetric heat load
928
1264
1199
1090
1281
1064
1164
kW/m3
Specific heat load
24,1
25,2
23,8
24,1
25,7
24,6
26,9
kW/m2
Maximum operating pressure
6
bar
Maximum admissible temperature
110
°C
Maximum operating temperature
95
°C
Min. admissible water return temp.
50
55
°C
Pressure drop ∆T 10°C
42,0
15,1
42
76,5
144
148
162
mbar
Pressure drop ∆T 20°C
14,0
3
11,2
17,2
45
27,2
29,7
mbar
Water capacity
126
161
191
268
258
308
308
litri
Turbulators
22
22
30
34
39
44
44
n°
(*) Heating appliance marketed before 1 January 2018, intended exclusively for replacement under the terms of EU
Regulation 813/2013, article 1, section 2, letter (g).
Technical data for boilers with gas burners <400 kw
TECHNICAL DATA FOR BOILERS WITH GAS BURNERS <400 KW
