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

13
GENERAL
b The stack must guarantee the minimum draught specified by applicable technical standards, assuming zero pres-
sure at the connection to the flue gas exhaust.
b Values obtained in combination with the reference burners (R) indicated in the combination table.
b When used in conjunction with fuel oil burners, RTQ 3S boilers <400kW conform to:
- Energy-Related Products Directive 2009/125/EC
- EU Delegated Regulation 813/2013
DESCRIPTION
RTQ 3S
91 115 166 217 255 318 349
Device type
Central Heating
B23
Fuel
OIL
Device category See burner
Maximum rated heat input HCV (LCV)
95,4
(90)
122
(115)
176,0
(166)
230,1
(217)
270,4
(255)
337,2
(318)
369,0
(348)
kW
Minimum rated heat input HCV (LCV)
74,2
(70)
95,4
(90)
122
(115)
176,0
(166)
230,1
(217)
270,4
(255)
337,2
(318)
kW
Maximum useful output (80°/60° C) P4 84,8 110,2 158,7 206,8 243,0 303,4 332,0 kW
Minimum useful output (80°/60° C) (Pn min) 66,9 86,6 110,4 159,2 208,8 244,3 304,0 kW
30% heat output with return at 37°C (P1) 25,7 33,1 47,6 62,0 72,9 91,0 99,9 kW
Seasonal energy efficiency hs 89,0 89,0 89,0 89,0 90,0 90,0 90,0 %
Efficiency at rated heat input in high tempe-
rature mode h4 (80-60°C) HCV (LCV)
88,8
(94,2)
90,3
(95,8)
90,2
(95,6)
89,9
(95,3)
89,9
(95,3)
90,0
(95,4)
90,0
(95,4)
%
Useful efficiency at min Pn (80-60°C) HCV
(LCV)
90,1
(95,6)
90,7
(96,2)
90,5
(96,0)
90,4
(95,9)
90,7
(96,2)
90,3
(95,8)
90,1
(95,6)
%
Efficiency at rated heat input in low tem-
perature mode h1 with return at 37°C HCV
(LCV)
94,0
(99,7)
94,0
(99,7)
94,0
(99,7)
94,0
(99,7)
94,0
(99,7)
94,1
(99,8)
94,1
(99,8)
%
Constant pressure drop 260 330 400 480 550 620 680 W
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 dm
3
Total volume of flue gas side 139,7 163,2 234,3 317,2 325,6 457,9 457,9 dm
3
Total surface area for heat exchange 3,62 4,35 6,68 8,59 9,47 12,34 12,34 m
2
Volumetric heat load 928 1264 1199 1090 1281 1064 1164 kW/m
3
Specific heat load 24,1 25,2 23,8 24,1 25,7 24,6 26,9 kW/m
2
Maximum operating pressure 6 bar
Maximum admissible temperature 110 °C
Maximum operating temperature 95 °C
Min. admissible water return temp. 37 °C
Pressure drop ∆T 10°C 42,0 15,1 42,0 76,5 144,0 148,0 162,0 mbar
Pressure drop ∆T 20°C 14,0 3,0 11,2 17,2 45,0 27,2 29,7 mbar
Water capacity 126 161 191 268 258 308 308 litri
Turbulators 22 22 30 34 39 44 44 n°
Consumption at full load (Elmax) 460 460 460 530 660 660 760 W
Consumption at part load (Elmin) 138 138 138 159 198 198 228 W
Electrical consumption in standby mode
(Psb)
20 20 20 20 20 20 20 W
Technical data for boilers with fuel oil burners <400 kw
TECHNICAL DATA FOR BOILERS WITH FUEL OIL BURNERS <400 KW