Immergas EOLO STAR 24 5E, Instruction Manual

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1-5 1-4
INS
TALLER
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MAINTEN
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CE TECHNI
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1.9 FLUE SYSTEMS.
The manufacturer suggests the use of your own
flue installation by supplying various solutions
separately from the boilers regarding the instal-
lation of air intake terminals and flue exhaust,
which are fundamental for boiler operation.
Attention: the boiler must only be installed
together with an original Immergas air intake
and flue gas exhaust system, except for the C6
configuration, in compliance with the stan-
dards in force. This system can be identified by
an identification mark and special distinctive
marking bearing the note " not for condensing
boilers".
The flue exhaust pipes must not be in contact with
or be near to flammable materials. Moreover,
they must not pass through buildings or walls
made of flammable material.
• Resistance factors and equivalent lengths. Each
flue component has a Resistance Factor based
on experimental 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 certain length in metres of pipe of the same
diameter; the so-called equivalent length ,
can be obtained from the ratio between the
relative Resistance Factors. All boilers have an
experimentally obtainable maximum Resistance
Factor equal to 100. The maximum Resistance
Factor allowed corresponds to the resistance
encountered with the maximum allowed pipe
length for each type of Terminal Kit. This
information allows calculations to be made to
verify the possibility of setting up various flue
configurations.
N.B.: to dimension the flue ducting using commer-
cial components, refer to the table of combustion
parameters (Paragr. 3.16).
1-5 1-4
1.8 REMOTE CONTROLS AND
ROOM CHRONO-THERMOSTATS
(OPTIONAL).
The boiler is prepared for the application of room
chrono-thermostats or remote controls, which
are available as optional kits (Fig. 1-4; 1-5).
All devices are connected with 2 wires only. Ca-
refully read the user and assembly instructions
contained in the accessory kit.
• On/Off digital chrono-thermostat. The chrono-
thermostat allows:
- set two room temperature value: one for day
(comfort temperature) and one for night
(reduced temperature);
- set a weekly programme with four daily
switch on and switch off times;
- selecting the required function mode from
the various possible alternatives:
• manual mode (with adjustable temperature).
• automatic mode (with set programme).
• forced automatic mode (momentarily changing
the temperature of the automatic programme).
The chrono-thermostat is powered by two 1.5V
LR 6 type alkaline batteries.
• Digital Remote Mini-Control Device with cli-
mate chrono-thermostat and CAR
V2
function.
In addition to the functions described in the
previous point, the Mini-DRC and CAR
V2
panels enable the user to control all the im-
portant information regarding operation of the
appliance and the central heating system with
the opportunity of easily intervening on the
previously set parameters without having to go
to the place where the appliance is installed. The
Mini CRD and CAR
V2
panels are equipped with
self-diagnosis to display any boiler functioning
anomalies. The climate regulator incorporated
into the remote panels enables the system flow
temperature to be adjusted to the actual needs
of the room being heated, in order to obtain
the desired room temperature with extreme
precision and therefore with evident saving
in running costs. The Mini CRD and CAR
V2
are fed directly by the boiler by means of the
same 2 wires used for the transmission of data
between the boiler and devices.
Digital Remote Mini-Control or CAR
V2
or On/
Off chrono-thermostat electrical connections
(Optional)
. The operations described below must
be performed after having removed the voltage
from the appliance.
Any room chrono-thermo-
stats or remote controls must be connected to
the 40 and 41 terminal blocks, eliminating the
X40 jumper (Fig. 3-2). Make sure that the On/
Off thermostat contact is of the “clean” type, i.e.
independent of the mains voltage, otherwise the
P.C.B. would be damaged. The boiler can only be
connected to one device at a time.
Important: if the Mini CRD or CAR
V2
remote
control is used, arrange two separate lines in
compliance with current regulations regarding
electrical systems. No boiler pipes must ever be
used to earth the electric system or telephone li-
nes. Ensure elimination of this risk before making
the boiler electrical connections.