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6
1-2
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Key:
V - Electrical connection
G - Gas supply
RU - Storage tank unit return (op-
tional)
MU - Storage tank unit flow (optional)
RR - System filling
R - System return
M - System flow
* = the boiler is equipped with a
90° gas cock with 3/4” attach-
ments and Ø18 mm fitting to be
welded.
Height
(mm)
Width (mm) Depth (mm)
781
440
340
CONNECTIONS
GAS
DOMESTIC
HOT WATER
SYSTEM
G
AC
AF
R
M
3/4”*
1/2”
1/2”
3/4”
3/4”
1.2 MAIN DIMENSIONS.
1.3 ANTIFREEZE PROTECTION.
Minimum temperature -5°C
. The boiler is sup-
plied with an antifreeze function as standard that
activates the pump and burner when the system
water temperature in the boiler falls below 4°C.
The antifreeze function is only guaranteed if:
- the boiler is correctly connected to gas and
electricity power supply circuits;
- the boiler is powered constantly;
- the boiler is not in “
Off
” mode;
- the boiler is not in ignition failure block (Par.
2.5);
- the boiler essential components are not faulty.
In these conditions the boiler is protected against
freezing to an ambient temperature of -5℃.
Minimum temperature -15°C.
If the boiler is
installed in a place where the temperature falls
below -3°C and in the event there is no gas (or
the boiler goes into ignition failure block), the
appliance can freeze.
To prevent the risk of freezing follow the instruc-
tions below:
- protects the central heating circuit from freez-
ing by introducing a top quality anti-freeze
liquid into this circuit, which is not noxious to
health. The instructions of the manufacturer
of this liquid must be followed scrupulously
regarding the percentage necessary with re-
spect to the minimum temperature at which
the system must be kept. An aqueous solution
must be made with potential pollution class of
water 2 (EN 1717:2002).
The materials used for the central heating circuit
of
Immergas boilers withstand ethylene and propyl-
ene glycol based antifreeze liquids (if the mixtures
are prepared perfectly).
For life and possible disposal, follow the sup-
plier's instructions.
- Protect the domestic hot water circuit against
freezing by using an accessory that is supplied
on request (antifreeze kit) comprising two
electric heating elements, the relevant cables
and a control thermostat (carefully read the
installation instructions contained in the ac-
cessory kit pack).
Boiler antifreeze protection is thus ensured only if:
- the boiler is correctly connected to electricity
power supply circuits;
- the main switch is on;
- the antifreeze kit components are efficient.
In these conditions the boiler is protected against
freezing to temperature of -15°C.
The warranty does not cover damage due to inter-
ruption of the electrical power supply and failure
to comply with that stated on the previous page.
N.B.:
if the boiler is installed in places where the
temperature falls below 0°C, the heating attach-
ment pipes must be insulated.
Содержание 3.020928
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