Operating Principle - Ferroli PREXTHERM RSW Series Instruction For Use, Installation And Assembly

The boilers feature two 1/2" fittings for bulb sheaths (able to house 3 bulbs each). The pre-wired control panel (optional) 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.
30
EN
L1
fig. 1 - 1250N÷1890N
L1
fig. 2 - 2360N÷6000N
cod. 3545453/0 - 06/2019
PREXTHERM RSW N