Primary Heat Exchanger - Immergas VICTRIX R 24 1 I Manual

Technical Documentation

Primary heat exchanger

(condensation module).
It is formed by a casing that contains 4 coiled elements.
Each element is made up from 5 elliptical spirals (3).
The entire module is realised in stainless steel and its internal
part makes up the sealed combustion chamber and the
condensation chamber (2).
The first three elements are affected directly by the action of
the cylindrical burner applied to the front, while the fourth is
arranged in the condensation chamber, which is separated from
the combustion chamber by sheet steel (see flue circuit).
To reduce head losses to a minimum and increase the flow rate
available to the system, the flow is made up from the parallel
connection of the first two elements, the return, instead is made
up from the parallel connection of the last two elements.
The inlet of the heat exchanger is connected to the external
pump flow (optional, not supplied with the boiler) and the outlet,
on which the NTC flow probe is positioned (1), is connected
to the primary circuit flow.
The primary circuit is coupled to the flow and return pipes
using threaded fittings with flat gaskets.
The flue hood (4) is connected to the rear using a relevant
gasket blocked by a metal ring.
The condensate drain is also found in the lower part.
To ease the escape of any air bubbles still present in the coils,
there is a manual air vent in the upper part of the module
(5).
STVR1I ed 04/08
Technical Documentation
FLUE
3
2
1
RETURN
FLOW
CONDENSATION
RUNOFF
6
4 5
VICTRIX R 24 1 I