INSTALLERUSER
MAINTENANCE TECHNICIAN
9
1.4 ANTIFREEZE PROTECTION.
Minimum temperature –5 °C.
e boiler comes standard with an antifreeze function
that activates the pump and burner when the system
water temperature drops below 4°C.
In these conditions the boiler is protected against freez-
ing down to a temperature of -5°C.
Minimum temperature –15 °C.
If the boiler is installed in a place where the temperature drops
below -5°C, the appliance may 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, which is specially suited for
central heating systems and which is manufacturer guaranteed
against damage to the heat exchanger or other components.
e antifreeze liquid must not be harmful to one's health. e
instructions of the manufacturer of the liquid must be strictly
followed regarding the necessary percentage with respect to
the minimum temperature provided for.
N.B.: the excessive use of glycol could jeopardise the proper
functioning of the appliance.
- An aqueous solution must be made with potential pollution
class of water 2 (EN 1717:2002).
- e central heating circuit of Immergas boilers are made from
materials that resist wear caused by ethylene and propylene
glycol based antifreeze liquids (if the mixtures are prepared
perfectly).
- For life and possible disposal, follow the manufacturer's in-
structions of liquid.
- Protect the domestic hot water circuit 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 and follow the
installation instructions contained in the accessory kit pack).
In these conditions the boiler is protected against freezing to
temperature of -15°C.
Boiler antifreeze protection (both -5°C and -15°C) is thus
ensured only if:
- the boiler is correctly connected to gas and electricity power
supply circuits;
- the boiler is powered constantly;
- the boiler is not in “o” mode;
- the boiler is not in anomaly conditions (Paragraph 2.5);
- the essential components of the boiler and/or antifreeze kit
are not faulty.
e 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 drops below 0°C, the domestic hot
water and central heating attachment pipes must
be insulated.
Note: the antifreeze systems described in this chap-
ter are only to protect the boiler. e presence of
these functions and devices does not exclude the possibility
of parts of the system or domestic hot water circuit outside
the boiler from freezing.
To Next Page
Loading...
