Operating Principle; Technical Data - Dimensions - Hydraulic Connections - Ferroli PREXTHERM RSW 92N Instructions D'utilisation, D'installation Et De Montage

PREXTHERM RSW 92N ÷ 600N
The boilers feature two 1/2" fittings for bulb sheaths (able to house 3 bulbs each). The pre-wired control panel is located above the boiler, and
allows for automatic operation.

4.2 Operating principle

PREXTHERM RSW N boilers are fitted with a closed cylindrical furnace, in which the flame produced by the burner is reversed peripherally
toward the front. From there, the burned gas enters the fire tubes. At the outlet, the gas is collected in the smokebox, and is then sent to the
chimney. The combustion chamber is always pressurized during burner operation. For the pressure values, see Table 1, in the column Flue gas
side pressure drop. The flue and flue stack fitting must be made in accordance with current standards and legislation, using rigid pipes that are
resistant to high temperatures, condensate, and mechanical stress, and are airtight. (Fig. 1)

4.3 Technical data - Dimensions - Hydraulic connections

Prextherm RSW
Rated power
Combustion chamber power
Useful efficiency at 100% maximum power
Useful efficiency at 30% maximum power
Total boiler capacity
Water side load loss
Flue side load loss
Maximum operating pressure
Dry weight
DIMENSIONS
HOT WATER FLOW
HOT WATER RETURN
EXPANSION TANK CONNECTION
BOILER DRAIN
FLUE GAS OUTLET
92N 107N 152N
min kW 60 70 100
max kW 92 107 152
min kW 64.3 75 107.3 147.4 170.9 209.5 242.5 277.5 364.5
max kW 99.5 116 165
% 92.48 92.00 92.30 91.95 92.25 92.05 92.51 92.30 92.50 92.56
% 93.95 93.65 94.50 93.46 94.24 94.12 95.50 94.19 94.15 94.32
liters 120 120 185
mbar 8 11 20
mbar 4 6 12
mbar 2 2.5
mbar 0.5 0.7 1.2
bar
kg 260 260 350
A mm 800 800 800
B mm 772 772 1022
C mm 860 860 915
D mm 162 162 162
E mm 167 167 167
F mm 148 148 148
G mm 510 510 545
H mm 385 385 425
I mm 1087 1087 1337
L mm 160 160 165
L1 mm 156 156 156
M mm 925 925 980
N mm 152 152 172
O mm 150 150 230
P mm 250 250 350
Q mm 750 750 750
R mm 740 740 990
T1 2" 2" 2" 1/2 2" 1/2 2" 1/2 2" 1/2 2" 1/2 2" 1/2
T2 2" 2" 2" 1/2 2" 1/2 2" 1/2 2" 1/2 2" 1/2 2" 1/2
T3 1 1/2" 1 1/2" 1 1/2" 1 1/2" 1 1/2" 1 1/2" 1 1/2" 1 1/2"
T4 3/4" 3/4" 3/4"
Øe
T5 200 200 220
mm
cod. 3541P130 - Rev. 00 - 02/2018
190N 240N 300N 350N
137 160 196 228
190 240 300 350
206 261 326 378
185 235 300 365
12 17 40 48
7 10 17 23
5 3 4 9 13
1.2 2.3 3.3 3.5
350 440 480 590
800 800 940 940
1022 1272 1272 1522
915 915 1035 1035
162 162 162 162
167 167 187 187
148 148 148 148
545 545 630 630
425 425 465 465
1337 1587 1607 1857
165 165 185 185
156 156 156 156
980 980 1100 1100
172 222 222 222
230 330 330 380
350 450 450 600
750 750 890 890
990 1240 1240 1490
3/4" 3/4" 3/4" 3/4"
220 220 220 220
401N 525N 600N
260 341 390
401 525 600
417
434 567 648
365 405 465
43 40 51
31 22 28
16 12 16
4.4 4.3 4.8
590 860 970
940 1050 1050
1522 1534 1794
1035 1185 1185
162 162 162
187 182 182
148 143 143
630 725 725
455 518 518
1857 1859 2119
170 205 205
156 155 155
1100 1250 1250
222 228 228
380 380 440
600 600 700
890 1000 1000
1490 1492 1752
DN DN
80 80
DN DN
80 80
2" 2"
3/4" 3/4" 3/4"
220 250 250
EN
45