External Temperature Probe; Immergas Flue Systems - Immergas VICTRIX OMNIA Instructions And Recommendations

1.11 EXTERNAL TEMPERATURE PROBE

(OPTIONAL)
The boiler is designed for the application of the external tempera-
ture probe (Fig. 10), which is available as an optional kit.
Refer to the relative instruction sheet for positioning of the exter-
nal probe.
The probe can be connected directly to the boiler electrical system
and allows the max. system flow temperature to be automatically
decreased when the external temperature increases, in order to
adjust the heat supplied to the system according to the change in
external temperature.
The external probe always operates when connected, regardless of
the presence or type of room chrono-thermostat used and can
work in combination with Immergas chrono-thermostats.
The correlation between system flow temperature and external
temperature is determined by the position of the central heating
selector switch on the boiler control panel (or on the CAR
trol panel if connected to the boiler) according to the curves
shown in the diagram (Fig. 11).
The electric connection of the external probe must be made on
terminals 38 and 39 on the terminal board in the boiler control
panel (Fig. 40).
Correction law of the flow temperature depending on the
external temperature and user adjustment of the central
heating temperature.
* Position of the central heating temperature control.
18
con-
V2
10
(*)
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1.12 IMMERGAS FLUE SYSTEMS

Immergas supplies various solutions separately from the boilers
regarding the installation of air intake terminals and flue exhaust,
which are fundamental for boiler operation.
The boiler must be installed with an original Immergas
"Green Range" inspectionable air intake system and vis-
ible flue gas extraction system made of plastic, with the
exception of the C
regulations in force and by the product's approval. This
flue system can be identified by the specific identifica-
tion mark bearing the following indication: "only for
condensation boilers".
For non-original flue system, refer to the technical data
of the appliance.
The plastic pipes cannot be installed outdoors, for tracts
longer than 40 cm, without suitable protection from UV
rays and other atmospheric agents.
Resistance factors and equivalent lengths
Each flue component has a Resistance Factor based on experimen-
tal tests and specified in the table below.
The Resistance Factor for individual components is independent
from the type of boiler on which it is installed and has a dimen-
sionless size.
It is however, conditioned by the temperature of the fluids that
pass through the pipe and therefore, varies according to applica-
tions for air intake or flue exhaust.
Each single component has a resistance corresponding to a cer-
tain length in metres of pipe of the same diameter; the so-called
equivalent length, can be obtained from the ratio between the rel-
ative Resistance Factors.
All boilers have an experimentally obtainable maximum Resist-
ance Factor equal to 100.
The maximum Resistance Factor allowed corresponds to the re-
sistance encountered with the maximum allowed pipe length for
each type of Terminal Kit.
This information allows calculations to be made to verify the pos-
sibility of setting up various flue configurations.
To dimension the flue ducting using commercial com-
ponents, refer to the table of combustion parameters
(Par. 4.2).
configuration, as required by the
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