Haier MRV 5-RC AS072MNERA User Manual

124
Graphical representation for wiring
Connect the communication terminal block P and Q of the main unit of the outdoor units with the communication
terminal block P and Q of the rst valve box (VP 1).
To power supply
1PH,220-230V~,
50/60Hz
Rated
Current
of
Overow
Breaker
communication wire with polarity
The communication wire of valve
boxes and outdoor units as well as
between valve boxes with non-polar.
Outdoor 1
Indoor 1
VP 1
VP 2
VP 3
Indoor 2
Indoor 3
Indoor 4
Indoor 5
Indoor 6
Outdoor 2 Outdoor 3
B
P Q
P Q
A
L N
CB
CB
A CB A CB
Outdoor
wired
controller
wired
controller
wired
controller
wired
controller
wired
controller
Indoor
PQ
P Q
L N
L N
CB
CB
Outdoor
Outdoor
Indoor
Indoor
P Q A CB
A B C
A B C
A B C
A B C
A B C
A B C
P Q A CB
P Q A CB
P Q A CB
P Q A CB
P Q A CB
Cooling and Heating indoor units simultaneous
Cooling-only indoor unit
Notes:
(1) The above wiring example is only for reference. The number of valve boxs and indoor units shall be subject to
the eld installation.
(2) Communication line from cooling-only indoor unit may be connected to the communication terminal block P and
Q (outdoor) of the valve box.
(3) Two-core nonpolar communication line with shield shall be adopted for communication lines between the valve
box and the indoor/outdoor unit. Three-core polar communication line with distinguished polarities and shield
shall be adopted for the wire controller connected to the indoor unit.
(4) All valve boxes within one system may share one overcurrent breaker for power supply. But it’s necessary to
compute total current capacity specication.
(5) For wring harness connected to the power terminal block, the terminal shall be pressed with a round (refer to
the following gure).
1) The power terminal block shall not be crimped with 2 wires of different diameters. Otherwise, poor crimp
connection and looseness may lead to abnormal heating or sparking of the line.
2) Refer to the following gure for crimping wires with the same diameter.
Wire
Insulating sleeve
Round. Press the terminal
Connect wires with the
same diameter on both
sides
It’s forbidden to connect
two wires on one side
Wires with different
diameters are not allowed

Haier MRV 5-RC AS072MNERA Specifications

General

Brand	Haier
Model	MRV 5-RC AS072MNERA
Category	Heat Pump
Language	English