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1.2 POSITION OF THE APPLIANCES.
The boilers can be installed:
- outdoors;
- in outdoor environments, also adjoining the
building served, located in uncovered space, as
long as structurally separated and without walls
in common, or situated on the flat covering of
the building served, always without walls in
common;
- in building also destined for other use or in
places inserted in the volume of the building
served.
These rooms must be intended exclusively to
house CH systems and must have characteristics
that comply with legislation in force.
Attention:
the installation of appliances powered
with gas with a greater density than 0.8 (L.P.G.)
is only allowed in places out of the ground,
also communicating with places that are on the
ground. In both cases the walkway must not have
hollows or depressions such to create gas pockets
that determine dangerous conditions.
Height of the installation room.
Installation of individual appliance
: the room
must have a minimum ceiling height of 2 m.
Installation of multiple appliances in cascade:
con-
sidering the size of the boiler, the flue manifold
(which must be installed on a 3% gradient) and
the hydraulic manifolds, the room must have a
minimum ceiling height of 2.3 m.
The aforementioned heights allow for correct
installation of the appliances and observe the
technical regulations in force.
Position of the appliances in the room.
Individual appliance
: the distances between
any external point of the boiler and the vertical
and horizontal walls of the room must allow
accessibility to the regulation, safety and control
elements for routine maintenance.
Multiple appliances, not interconnected, but in-
stalled in the same room
: the minimum distance
to maintain between several boilers installed
on the same wall must be 200 mm, in order to
allow accessibility to the regulation, safety and
control elements and routine maintenance of all
appliances installed.
Cascade installation
: The instructions for correct
cascade installation are provided in the respec-
tive documents or on the www.immergas.com
website in the high power section.
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.
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 > 515 cm
2
for every Victrix Pro 55 1A
(ex: to install 3 Victrix Pro 55 1A in cascade,
the minimum surface is 515 x 3 = 1545 cm
2
)
b) basements and underground rooms up to a
height of -5 m from the reference surface (S
≥ Q x 15).
S > 775 cm
2
for every Victrix Pro 55 1A
(ex: to install 3 Victrix Pro 55 1A in cascade,
the minimum surface is 775 x 3 = 2325 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, depres-
sions or openings communicating with rooms
below the walkway surface or draining ducts.
Aeration for installation in building also des-
tined 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 require-
ments of all relevant codes and standards.
1.4 OUTDOOR INSTALLATION.
The boiler has an IPX5D electric insulation rat-
ing 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 ac-
tivates 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
- 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 1717:2002 or local regulations in force).
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 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 instal-
lation 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 inter-
ruption of the electrical power supply and failure
to comply with that stated on the previous page.
