Riello RTQ 91 3S - Technical Data for Boilers with Gas Burners <400 Kw

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