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Fig. 1-2
1.2 MAIN DIMENSIONS.
Key:
V - Electrical connection
G - Gas supply
AC - Domestic hot water outlet
AF - Domestic hot water inlet
SC - Condensate drain
(minimum internal diameter Ø13 mm)
R - System return
M - System flow
ACV - Solar valve kit DHW inlet (optional)
1.3 ANTI-FREEZE PROTECTION.
Minimum temperature -3°C.
The boiler comes
standard with an anti-freeze function that
activates the pump and burner when the system
water temperature in the boiler falls below 4°C.
The anti-freeze 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 stand-by (
);
- the boiler is not in no ignition block (par. 2.6);
- the boiler essential components are not faulty.
In these conditions the boiler is protected against
freezing to an environmental temperature of -3°C.
Minimum temperature -15°C.
If the boiler is
installed in a place where the temperature falls
below -5°C and in the event there is no gas (or
the boiler goes into ignition block), the appliance
can freeze.
To prevent the risk of freezing follow the
instructions below:
- protect the central heating circuit from freezing
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 respect to the
minimum temperature at which the system
must be kept. An aqueous solution must be
made with potential pollution class of water 2.
The materials used for the central heating circuit
of Immergas boilers resist ethylene and propylene
glycol based antifreeze liquids (if the mixtures are
prepared perfectly).
For life and possible disposal, follow the
supplier's instructions.
- Protect the condensate drain trap and circuit
board against freezing by using an accessory
that is supplied on request (anti-freeze kit)
comprising two electric heating elements,
the relevant cables and a control thermostat
(carefully read the installation instructions
contained in the accessory kit pack).
Boiler anti-freeze protection is thus ensured only if:
- the boiler is correctly connected to gas and
electricity power supply circuits and powered;
- the anti-freezing 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
interruption 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 domestic water
and heating attachment pipes must be insulated.
Height
(mm)
Width
(mm)
Depth
(mm)
835
440
350
CONNECTIONS
GAS
DOMESTIC
HOT WATER
SYSTEM
G
AC
AF
R
M
1/2”
1/2”
1/2”
3/4”
3/4”
