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7
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Unit installation
7.2 Opening and closing the units
7.2.1 About opening the units
7.2.2 To open the indoor unit
Installer reference guide
36
A
(minimum bottom opening area for natural ventilation)
nv-min
The minimum bottom opening area for natural ventilation between the
unoccupied room and the outside depends on the total refrigerant in the system.
For intermediate refrigerant charges, use the row with the higher value. Example:
If the refrigerant charge is 2.55 kg, use the row of 2.6 kg.
Total refrigerant charge (kg)
2.20
2.30
2.40
2.50
2.60
At certain times, you have to open the unit. Example:
▪
When connecting the electrical wiring
▪
When maintaining or servicing the unit
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover is removed.
1 Remove the bottom cover to be able to guide the cables to the switch box.
6×
2 Remove the top cover.
4×
3 Remove the switch box cover.
A
(dm²)
nv-min
7.5
7.7
7.9
8.0
8.2
EKHWET90+120B
R32 Split series – Domestic hot water tank
4P680077-1A – 2022.11
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