Immergas EOLO Maior 24 kW Manual De Instrucciones página 98

ing in running costs. The chronothermostat is fed directly by the boiler
by means of the same 2 wires used for the transmission of data between
ES
boiler and chronothermostat.
• External temperature sensor. This sensor can be connected directly to the
boiler electrical system and allows the max. system delivery temperature
TR
to be automatically decreased when the outside temperature increases, in
order to adjust the heat supplied to the system according to the change in
outside temperature. The external sensor always operates when connected,
regardless of the presence or type of room chronothermostat used, and
RO
can work in combination with both Immergas chronothermostats. The
correlation between system delivery temperature and outside temperature
is determined by the position of the knob on the boiler control panel ac-
cording to the curves shown in the diagram. The external sensor electrical
IE
connection must be made to terminals 38 and 39 on the boiler electronic
card (see wiring diagram).
Electrical connection of the Remote Friend Control or On/Off chrono-
thermostat (Optional). The following operations must be carried out after discon-
necting the electrical power supply. The possible thermostat or On/Off room
chronothermostat must be connected to terminals 40 and 41 eliminating
jumper X20 (see wiring diagram). Make sure the On/Off thermostat contact
is of the "clean" type, i.e. separate from the mains supply, otherwise the
electronic adjustment card would be damaged. The possible Remote Friend
Control must be connected by means of terminals IN+ and IN- to terminals
42 and 43 on the electronic card (in the boiler) respecting the polarity (see
wiring diagram). Connection with the wrong polarity inhibits its operation,
but without damaging the Remote Friend Control. The boiler works with
the parameters set on the Remote Friend Control only if the boiler main
switch is turned to Domestic/Remote Friend Control (
Important: If the Remote Friend Control is used arrange two separate lines
in compliance with current regulations regarding electrical systems. Boiler
pipes must never be used to earth the electric or telephone lines. Ensure
elimination of this risk before making the boiler electrical connections.
External installation in a partially protected place.
N.B.: A partially protected place is that in which the appliance is not directly
exposed to bad weather (rain, snow, hail, etc.).
• B type configuration with open chamber and forced draught.
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In this configuration it is necessary to use the special terminal (included in
the special intake kit) to be fitted on the boiler central hole (see the following
fig.). Air is drawn directly from the place where the boiler is installed, and
fumes are exhausted into a single flue or directly to the outside.
In this configuration the boiler is classified as B
With this configuration:
- air is drawn directly from the place where the appliance is installed (which
must only be in permanently ventilated rooms);
96
- the fume exhaust must be connected to its own single flue or ducted
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type.
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directly to the outside.
Therefore the current technical standards must be respected.
Fume shutter adjustment. For correct boiler operation in B
figuration, the fume shutter must be adjusted by moving the indicator to
notch 5 (see page 97).
Max. length of exhaust duct. The exhaust duct (vertical and horizontal)
can be extended up to a max. straight length of 12 m using insulated pipes
(see page 103). To avoid problems of fume condensation in the exhaust pipe
Ø 80, due to cooling through the wall, the length of the duct (not insulated)
must be limited to just 5 metres.
type con-
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