Haier MRV 5-RC VP1-112B Service Manual page 139

1. Pre-installation
The installation location selected shall meet the following conditions and be approved by users.
• The strength shall be sufficient to withstand the weight of the valve box
• There is no significant tilt on the plane.
• Ensure that there is enough space for installation and maintenance.as show in Fig.1
• There is space for inspection on the side and top of the electric box
• The length of piping between the indoor and outdoor units shall be within the permissible range (referring to the
specification attached to the outdoor unit).
• Please install the valve box in places where noise will not influence the customers too much (such as washroom,
passageway, warehouse, equipment room, etc.). Places with high requirement for quiet are not suggested for
installation, such as bedroom, drawing room, meeting room, office, etc.
Note:
• the electrical box can be changed as show in 3 valve box installation.
• When starting up, stop, defrosting, and oil-returning in heating mode , the 4-way valve will veer and create noise.
This kind of noise is normal for the running of valve box.
• A noise may be emitted by the valve box as aresult of control during operation or stopping of an indoor unit. If it is
installed in the ceiling where it is exposed, take adequate precautions with the installation location.
<Notice item>
• Inspect whether the installation location can sufficiently withstand the weight of valve box and set the hoisting
bolts by reinforcing the beam if necessary. Use hoisting bolts in installation (referring to 2 for the preparation
before installation).
• Install the power wiring and power line of the valve box at more than 1 m away from TV and radio to prevent the
image clutter and noise. But, there may be noise even if it is more than 1m according to the different waves.
Outdoor unit side
(3 pipes)
500 or more
Outdoor unit side
100 or more
(3 pipes)
300 or more
100 or more
Dooryard
500
Fig.1
136
Indoor unit
side pipe
Drain socket
Electrical box
Manhole must be arranged on
the side of the electrical box.