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1.3 AERATION AND VENTILATION OF
THE INSTALLATION ROOMS.
The rooms must have one or more permanent
openings for aeration on external walls. The
openings used for aeration can be protected
using metal grills, meshes and/or rain-proof fins
as long as the net aeration surface is not reduced.
The aeration openings must be realised and
located in a way to prevent the formation
of pockets of gas, independently from the
conformation of the covering.
Aeration for installation in outdoor places.
The
minimum free surfaces, in relation to the overall
heat input must not be below:
a) above-ground rooms (S ≥ Q x 10)
S > 755 cm
2
for every Victrix Pro 80 2ErP
S > 925 cm
2
for every Victrix Pro 100 2ErP
S > 1145 cm
2
for every Victrix Pro 120 2ErP
(ex: to install 3 Victrix Pro 80 2ErP in cascade,
the minimum surface is 755 x 3 = 2265 cm
2
)
b) basements and underground rooms up to a
height of -5 m from the reference surface (S
≥ Q x 15).
S > 1130 cm
2
for every Victrix Pro 80 2ErP
S > 1385 cm
2
for every Victrix Pro 100 2ErP
S > 1712 cm
2
for every Victrix Pro 120 2ErP
(ex: to install 3 Victrix Pro 80 2ErP in cascade,
the minimum surface is 1130 x 3 = 3390 cm
2
)
c) underground rooms at quota between -5 m
and -10 m from the reference surface (S ≥ Q
x 20 with a minimum of 5000 cm
2
).
S > 5000 cm
2
for all configurations
In all cases each opening must not have a net
surface area less than 100 cm
2
.
Attention:
in the case of installation of appliances
powered with gas with greater density than 0.8
(L.P.G.) in outdoor places, above-ground, at least
2/3 of the aeration surface must be flush with the
floor, with a minimum height of 0.2 m.
The aeration openings must be at least 2 m for
heating capacities not exceeding 116 kW and
4.5 m for higher heating capacities, cavities,
depressions or openings communicating with
rooms below the walkway surface or draining
ducts.
Aeration for installation in buildings also
destined for other use or in places inserted in
the volume of the building served.
The aeration
surface must not be less than 3000 cm
2
in the case
of natural gas and must not be less than 5000 cm
2
in the case of L.P.G..
The installation must comply with the
requirements of all relevant codes and standards.
1.4 OUTDOOR INSTALLATION.
The boiler has an IPX5D electric insulation
rating and can also be installed outdoors, without
additional protections.
Attention:
all optional kits that can be potentially
connected to the boiler must be protected on the
basis of their electrical protection rating.
1.5 ANTI-FREEZE PROTECTION.
Minimum temperature -5°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 5°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;
- Main switch is inserted;
- the boiler is not in no ignition block (Par.
- the boiler essential components are not faulty.
In these conditions the boiler is protected against
freezing to an ambient temperature of -5°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 failed ignition block), the
appliance can freeze.
To prevent the risk of freezing follow the
instructions below:
- Protect the central heating circuit from freezing
by inserting a good-quality antifreeze liquid
into this circuit, which is specially suited
for central heating systems and which is
manufacturer guaranteed not to cause damage
to the heat exchanger or other components of
the boiler.
The antifreeze liquid must not be harmful to
one’s 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 a potential water pollution class
of 2 (EN 1717).
The materials used for the central heating circuit
of Immergas boilers withstand 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 relative
drain against freezing by using an accessory
supplied on request (anti-freeze kit) comprising
two electric resistances, 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 electricity
power supply circuits;
- Main switch is inserted;
- the anti-freeze 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.
