7.1.10
Electrical wiring
1. The system uses one two-core communication wire, all of the indoor communication wires
are connected to this wire in parallel. “C1”, “C2” are non-polar, when wiring, please pay
attention that they must be separate with the power wire, in order not to make the
interfering signal.
2. When pressing the power wire, please pay attention that the interior diameter of loop
terminal should be more than
φ
5.5, in order not to press it firmly.
3. The max. current can be up to 42A, and power can be up to 7.5KW. So when selecting the
electric parts and air breaker, the data should be 1.5 times than the nominal.
4. Because the indoor unit adopts EEV control method, when a sudden power off occurs, the
EEV maybe keep some angle. If indoor unit and outdoor unit connect to power supply
separately, when some indoor units running in cooling mode, when powered off, because
the EEV does not reset, the indoor units maybe drop water, ice up. We recommend that the
indoor unit connect to power supply from the outdoor unit, or use one power supply with the
outdoor unit. If the indoor unit need connect power supply individually, the personnel must
explain to the customer that he (she) must switch off the unit with wired controller or remote
controller, then he (she) can shut off the indoor unit. If there is accidental power failure,
please firstly power on all the indoor units after power on, in order to reset the indoor EEV.
Specification for selecting wiring and circuit breaker on field:
Type
Power wire
Power wire (connecting
to unit)
Communication wire
(connecting to unit)
Short circuit
protector
H05RN-F
H05RN-F Shielding
wire
AU482FIBHA 3 x 10mm
2
3x(1~1.5mm
2
) 2x(0.5~1mm
2
) 75A
AU48NFIBIA
5 x 4mm
2
3x(1~1.5mm
2
) 2x(0.5~1mm
2
) 20A
Type
Power wire
Power wire
(connecting to unit)
Communication wire
(connecting to unit)
Short circuit
protector
YZW
YZW Shielding
wire
AU242FHBHA 3 x 2.5mm
2
3x(1~1.25mm
2
) 2x(0.75~1.25mm
2
) 30A
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-66-
Summary of Contents for H-MRV AF092FCBHA
Page 121: ... _ VbTZR Zb _ UZdZ_ Vb AU242FHBHA PCB top layer printed diagram 121 ...
Page 122: ... _ VbTZR Zb _ UZdZ_ Vb AU242FHBHA PCB bottom layer printed diagram 122 ...
Page 127: ... _ VbTZR Zb _ UZdZ_ Vb AU482FIBHA high voltage PCB printed diagram 127 ...
Page 131: ... _ VbTZR Zb _ UZdZ_ Vb AU482FIBHA low voltage PCB printed diagram 131 ...
Page 152: ... a__WcU S c a V e a Wc AB092 182FCBHA PCB printed diagram 152 ...
Page 156: ... a__WcU S c a V e a Wc AE FCBKA PCB printed diagram 156 ...
Page 199: ...MEMO Commercial Air Conditioner ...