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1.4
ANTIFREEZE PROTECTION
Appliance antifreeze protection is thus only ensured if:
- the appliance is correctly connected to gas and electricity power supply circuits;
- the appliance is powered constantly;
- the appliance has the antifreeze function active (P.8 = 0);
- the appliance is not in anomaly conditions (Par.2.5);
- the appliance essential components are not faulty.
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 appliance. The antifreeze liquid must not be harmful to one's health. The instructions of the manufacturer of this liquid must be
strictly followed regarding the necessary percentage with respect to the minimum temperature at which the system must be kept.
- The materials used for the central heating circuit of Immergas appliances resist propylene glycol based antifreeze liquids (if the mix-
tures are prepared perfectly).
- An aqueous solution must be made with potential pollution class of water 2 (EN 1717:2002 or local standards in force).
Follow the supplier's instructions for the life cycle duration and possible disposal of the anti-
freeze liquid.
The water in the storage tank unit (if present) is not protected against freezing when the appliance is switched off.
The antifreeze systems described in this chapter are only to protect the appliance; the presence of these functions and devices
does not exclude the possibility of parts of the system or domestic hot water circuit outside the appliance from freezing.
The excessive use of glycol could jeopardise the proper functioning of the appliance.
Minimum room temperature -5°C
Insulate the visible pipes and fittings with 10 mm thick insulating material (cooling inlet pipe, heating outlet pipe and condensate drain-
ing pipe).
The appliance comes as per standard with an antifreeze function that activates the pump and the burner when the system water temper-
ature in the appliance falls below 4°C.
In these conditions, previously listed, the appliance is protected against freezing up to an ambient temperature of -5°C.
If the appliance is installed in a place where the temperature drops below -5°C, the appliance may freeze.
When installing the appliance in locations where the temperature falls below -5°C, installation of the antifreeze kit is required,
respecting all the conditions listed above.
Minimum room temperature -15°C
Protect the domestic hot water circuit (when paired with a storage tank unit) against freezing by using an accessory that is supplied on
request (antifreeze kit) comprising an electric resistance, the relevant wiring and a control thermostat (carefully read and follow the in-
stallation instructions contained in the accessory kit pack).
In the previously listed conditions ad with the addition of the antifreeze kit, the appliance is protected against freezing up to a
temperature of -15°C.
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