Argo AEI1G 42 EMX, Технические данные и руководство по обслуживанию

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6 Principle of functioning
OPERATING MODE SELECTION
In a sigle split configuration, the operating mode of the system (heating or cooling) corresponds to the
mode selected on the indoor unit.
In a muli split configuration, the operating mode of the system is selected with the following rules:
Heating mode is selected if:
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all indoor units are in heating mode
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one or more indoor units are in heating mode and the others are in off mode or fan mode
Cooling mode is selected if:
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all indoor units are in cooling or dry mode
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one or more indoor units are in cooling or dry mode and the others are in off mode or fan mode
A conflict mode is generated if one or more unit are in heating mode and one or more units are in
cooling or dry mode. In this case:
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if the compressor is off, all the unit will return a “wrong mode” error (see the error table of the
indoor unit)
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if the compressor is running, the indoor units where the selected mode isn’t in accordance with
the current mode will return a “wrong mode” error (see the error table of the indoor unit)
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if the indoor units are in auto mode, the first unit that selects the mode (see “Auto mode”
section) will set the system in that mode and the other indoor units will adapt to that mode,
mantaining anyway their setpoint.
Heating mode
When the system is in heating mode, it will regulate the heating capacity delivered to the rooms to
increase the rooms air temperature (RAT) to the set point (SPT) and to balance the thermal load of the
rooms to keep the set point temperature.
The following rules apply to heating mode functioning:
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Compressor and fan start when, in any of the rooms, RAT is 1°C or more below the SPT
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Compressor and fan stop when, in all rooms, RAT is 2°C or more above the SPT or when RAT is
1°C above the SPT for more than 1 hour
During the first 3 minutes of operation:
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Compressor and fan run at a fixed speed (2 minutes at low speed and 1 minute at intermediate
speed)
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EEV is open at a fixed value
After the first 3 minutes of operation, compressor and fan speeds are regulated by:
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the thermal load calculation of all the rooms
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the level of protecion of the system
During heating mode, 4-way valve is active.