Mitsubishi Electric MFZ-KW25VG Notice D'installation page 4

1-3. SPECIFICATIONS
Model
Indoor unit
MFZ-KW25VG MUFZ-KW25VGHZ
MFZ-KW35VG MUFZ-KW35VGHZ
MFZ-KW50VG MUFZ-KW50VGHZ
MFZ-KW60VG MUFZ-KW60VGHZ
*1 Connect to the power switch which has a gap of 3 mm or more
when open to interrupt the source power phase. (When the
power switch is shut off, it must interrupt all phases.)
*2 Use wires in conformity with design 60245 IEC 57.
*3 Never use pipes with thickness less than specified. The pressure
resistance will be insufficient.
*4 Use a copper pipe or a copper-alloy seamless pipe.
*5 Be careful not to crush or bend the pipe during pipe bending.
*6 Refrigerant pipe bending radius must be 100 mm or more.
EN
EN-3
Power supply *1
Rated
Outdoor unit Frequency
Voltage
230 V 50 Hz
*7 If pipe length exceeds 7 m, additional refrigerant charge is
required. (No additional charge is required for pipe length less
than 7 m.)
Additional refrigerant = A × (pipe length (m) – 7)
*8 Insulation material : Heat resisting foam plastic 0.045 specific
gravity
*9 Be sure to use the insulation of specified thickness. Excessive
thickness may cause incorrect installation of the indoor unit and
insufficient thickness may cause dew drippage.
Wire specifications *2
Breaker Power supply Indoor/outdoor
capacity (3-core) connecting wire
10 A 1.0 mm
2
12A 1.5 mm
2
4-core
2.0 mm
16 A 2.0 mm
2
Pipe size
(thickness *3, *4)
Maximum amount of
refrigerant charge
Gas / Liquid
ø9.52 / 6.35 mm
1260g
(0.8 mm)
2
ø12.7 / 6.35 mm
1760g
(0.8 mm)
(KW25, 35/KW50, 60)
Pipe length and height difference
Max. pipe length
Max. height difference
Max. number of bends *5, *6
Refrigerant adjustment A *7
Insulation thickness *8, *9
20/30 m
12/15 m
10
20 g/m
8 mm