Immergas 6 - Инструкция по эксплуатации - Страница 45

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The parameters referring to zone 2 can only be displayed if there is a zone 2 on the system and it is configured correctly.

The parameters referring to zone 3 can only be displayed if there is a zone 3 on the system and it is configured correctly.

  2.7 

INDOOR  UNIT  SHUTDOWN

Switch off the indoor unit, putting it in “OFF” mode. Switch off the omni-polar switch outside the unit.
Never leave the unit powered if left unused for prolonged periods.

  2.8  RESTORE CENTRAL HEATING SYSTEM PRESSURE

1.  Periodically check the system water pressure (the indoor unit’s pressure gauge hand must indicate a value between 1 and 1.2 bar).
2.  If the pressure is less than 1 bar (with the system cold), you must restore it using the cock located at the bottom of the unit (Parag.  1.22).
3.  Close the cock after the operation.
4.  If the pressure reaches values around 3 bar, there is a risk of tripping the safety valve (in this case, remove water from a radiator air vent 

valve until a pressure of 1 bar is achieved, or ask for assistance from professionally qualified personnel).

5.  In the event of frequent pressure drops, contact qualified staff for assistance to eliminate the possible system leakage.

  2.9 

DRAINING  THE  SYSTEM

1.  Ensure that the filling cock is closed.
2.  Open the draining cock (Parag.  1.22).
3.  Open all vent valves.
4.  At the end, close the emptying cock.
5.  Close all previously opened vent valves.

If fluid containing glycol was added to the system circuit, make sure it is recovered and disposed of in accordance with standard 
EN 1717.

  2.10  ANTIFREEZE  PROTECTION

The indoor unit has an anti-freeze function that automatically switches on the outdoor unit when the temperature drops below 4°C 
(standard protection up to a minimum temperature of -5°C).
All information relative to the antifreeze protection is stated in (Parag.  1.5).
In order to guarantee the integrity of the appliance and the domestic hot water heating system (if paired with a storage tank unit) in areas 
where the temperature drops below zero, we recommend protecting the central heating system using anti-freeze liquid and installing the 
Immergas Antifreeze Kit in the indoor unit.

  2.11  PROLONGED INACTIVITY

In case of prolonged inactivity (e.g. second home), we recommend:
1.  to switch off the power supply;
2.  completely empty the central heating circuit and the indoor unit domestic hot water circuit (if paired with a storage tank unit). In 

systems that are drained frequently, filling must be carried out with suitably treated water to eliminate hardness that can cause lime-
scale.

  2.12  CLEANING THE CASE

1.  Use damp cloths and neutral detergent to clean the indoor unit casing.

Never use abrasive or powder detergents.