Electrical Wiring - Mitsubishi Electric Fresh Master GUF-50RDH4 Installation Instructions Manual

Warning:
cal Installation" and supplied installation manuals. Special
circuits should also be used. If the power circuit lacks capac-
ity or has an installation failure, it may cause a risk of electric
1. Be sure to take power from the special branch circuit.
2. Be sure to install an earth leakage isolator to the power.
3. Install the unit to prevent that any of the control circuit cables (Re-
with the power cable outside the unit.
4. Ensure that there is no slack on all wire connections.
- Types of transmission cables
Design wiring in accordance with the following table <Table 1>.
- Cable cross-sectional area 1.25 mm
<Table 1>
Transmission cable length
Facility example Residence or independent
store without noise
Types of transmission
cables shielding wire CVVS or
CPEVS
2. Remote controller cables
MA Remote controller (PAR-21MAA)
Type
Wire Type
Number of conductors
Wire diameter
Total Length
Note1 For work purposes, a wire diameter of 0.75 mm
-
-
2 to 2.00 mm 2
For a single-refrigerant system
Less than 120 m
tions station without noise supposedly
2-conductor cable
0.3 - 1.25 mm (Note 1)
2
Max. 200 m
is recommended.
2
above the ceiling may be bitten by mice. Use as many metal pipes
as possible to insert the cables into them for protection.
6. Never connect the power supply cable to leads for the transmis-
sion cables. Otherwise the electronic circuit would be broken.
8. Put the unit to the ground on the outdoor unit side.
9. Select control cables from the conditions given below.
Caution:
- Be sure to put the unit to the ground on the outdoor unit side.
Do not connect the earth cable to any gas pipe, water pipe,
lightening rod, or telephone earth cable. Incomplete ground-
ing may cause a risk of electric shock.
More than 120 m
-
-
Shielding wire CVVS or CPEVS
10 m or shorter
0.3 - 1.25 mm (Note 1)
2
(0.75 - 1.25 mm 2 ) (Note 2)
Max. 10 m
For a multi-refrigerant system
Regardless of length
All facilities
If the length exceeds 10 m.
M-NET transmission cable
length within the maximum length of
communications lines between indoor
and outdoor units.
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