12
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, RTS boilers <400kW conform to:
- Energy-Related Products Directive 2009/125/EC
- EU Delegated Regulation 813/2013
RTS 3S
90
115
166
217
255
349
Device type
Central Heating
B23
Fuel
Oil
Device category
See burner
Maximum rated heat input HCV (LCV)
95,4
(90)
122
(115)
176
(166)
230,1
(217)
270,4
(255)
370,1
(349)
kW
Minimum rated heat input (Q min) HCV (LCV)
74,2
(70)
95,4
(90)
122
(115)
176
(166)
230,1
(217)
270,4
(255)
kW
Rated useful heat output max. (80/60°C) P4
85,1
108,3
157,4
207,5
244,0
334,7
kW
Rated useful heat output min. (80/60°C) (Pn min)
66,6
85.5
109,6
158,7
206,2
243,0
kW
30% heat output with return at
37°C
(P1)
25,5
32,5
47,2
62,9
73,2
100,4
kW
Seasonal energy efficiency
h
s
89,0
89,0
89,0
90,0
90,0
90,0
%
Efficiency at rated heat input in high temperature
mode
h
4 (80-60°C) HCV (LCV)
89,1
(94,5)
88,8
(94,2)
89,4
(94,8)
90,2
(95,6)
90,3
(95,7)
90,4
(95,9)
%
Useful efficiency at min Pn (80-60°C) HCV (LCV)
89.8
(95.2)
89,6
(95,0)
89,9
(95,3)
90,2
(95,6)
89,6
(95,0)
89,9
(95,3)
%
Efficiency at rated heat input in Low temperature
mode
h
1 with return at 37°C HCV (LCV)
94,0
(99,7)
94,1
(99,8)
94,2
(99,9)
94,2
(99,9)
94,1
(99,8)
94,1
(99,8)
%
Heat loss in standby mode
240
300
360
430
500
600
W
Flue gas temperature (∆T°)
106
103
103
106
100
106
°C
Flue gas mass flow rate (Pn Max)
0,040
0,050
0,072
0,094
0,110
0,151
Kg/s
Furnace pressure
1,0
1,4
1,8
2,7
2,9
3,6
mbar
Furnace volume
75
121
176
176
240
296
dm
3
Total volume of flue gas side
112
176
253,5
261,5
357,5
443
dm
3
Surface area for heat exchange
3,77
5,32
7,34
8,16
10,06
12,88
m
2
Volumetric heat load (Pn Max)
1203
947
941
1229
1066
1180
kW/m
3
Specific heat load (Pn Max)
22,6
20,4
21,4
25,4
24,3
26,0
kW/m
2
Maximum operating pressure
6
bar
Maximum admissible temperature
110
°C
Maximum operating temperature
95
°C
Min. admissible water return temper.
37
°C
Pressure drop ∆T 10° C
22
25
27
45
43
75
mbar
Pressure drop ∆T 20° C
7
5
5
10
13
20
mbar
Water capacity
176
255
319
309
408
495
l
Consumption at full load (Elmax)
430
450
460
660
660
760
W
Consumption at part load (Elmin)
151
158
161
231
231
266
W
Electrical consumption in standby mode (Psb)
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
GENERAL
