Mitsubishi Electric MS-GF50VA Installation Manual

INSTALLATION MANUAL

1. BEFORE INSTALLATION

1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

■ Do not install the unit by yourself (user).
■ Perform the installation securely referring to the installa-
tion manual.
■ When installing the unit, use appropriate protective equip-
ment and tools for safety.
■ Install the unit securely in a place which can bear the
weight of the unit.
■ Electrical work should be performed by a quali ed, e pe-
rienced electrician, according to the installation manual.
Be sure to use an e clusive circuit. Do not connect other
electrical appliances to the circuit.
■ Earth the unit correctly.
■ Do not damage the wires by applying e cessive pressure
with parts or screws.
■ Be sure to cut off the main power in case of setting up the
indoor P.C. board or wiring works.
■ Use the speci ed wires to connect the indoor and outdoor
units securely and attach the wires rmly to the terminal
block connecting sections so the stress of the wires is
not applied to the sections. Do not e tend the wires, or
use intermediate connection.
■ Install an earth leakage breaker depending on the instal-
lation place.
■ Perform the drainage/piping work securely according to
the installation manual.

1-2. SELECTING THE INSTALLATION LOCATION

INDOOR UNIT
• Where cool air spreads over the entire room.
• Where it is not exposed to direct sunshine. Do not expose to direct
descent lights.
REMOTE CONTROLLER
• Where children cannot touch it.
pillar or wall and install wireless remote controller.

1-3. SPECIFICATIONS

Indoor unit Outdoor unit
*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
Model names are indicated in 1-3.
■ Do not install the unit in a place where in ammable gas
may leak.
could cause an explosion.
■ Do not use intermediate connection of the power cord or
the e tension cord and do not connect many devices to
one AC outlet.
etc.
■ Be sure to use the parts provided or speci ed parts for
the installation work.
■ When plugging the power supply plug into the outlet,
make sure that there is no dust, clogging, or loose parts
in both the outlet and the plug. Make sure that the power
supply plug is pushed completely into the outlet.
■ Attach the electrical cover to the indoor unit and the
service panel to the outdoor unit securely.
If the electrical cover of the indoor unit and/or the service panel
■ When installing, relocating, or servicing the unit, make
sure that no substance other than the speci ed refrigerant
(R410A) enters the refrigerant circuit.
■ Do not touch the air inlet or the aluminum ns of the
outdoor unit.
Note:
OUTDOOR UNIT
• Where it is not exposed to strong wind.
air.
-
unit legs.
Rated Volt-
age
15 A
230 V 20 A
25 A
charge is required. (No additional charge is required for pipe
-
length less than 7.5 m.)
Phillips screwdriver
Level
Scale
75 mm hole saw
Torque wrench
Wrench (or spanner)
WARNING
CAUTION
Pipe size
Indoor/outdoor
Gas / Liquid
connecting wire
ø12.7 / 6.35 mm
(0.8 mm)
3-core 4-core
ø15.88 / 6.35 mm
2.5 mm
2 1.0 mm 2 (1.0 / 0.8 mm)
ø15.88 / 9.52 mm
(1.0 / 0.8 mm)
Required Tools for Installation
4 mm hexagonal wrench
Flare tool for R410A
Gauge manifold for R410A
Vacuum pump for R410A
Charge hose for R410A
Pipe cutter with reamer
■ Do not discharge the refrigerant into the atmosphere. If
refrigerant leaks during installation, ventilate the room.
Provide ventilation in accordance with EN378-1.
■ Check that the refrigerant gas does not leak after instal-
lation has been completed.
-
■ Use appropriate tools and piping materials for installation.
The pressure of R410A is 1.6 times more than R22. Not using
appropriate tools or materials and incomplete installation could
■ When pumping down the refrigerant, stop the compressor
before disconnecting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compres-
■ When installing the unit, securely connect the refrigerant
pipes before starting the compressor.
■ Fasten a are nut with a torque wrench as speci ed in
this manual.
■ The unit shall be installed in accordance with national
wiring regulations.
■ Do not install the outdoor unit where small animals may
live.
If small animals enter and touch the electric parts inside the
Note:
Note:
• Never install the outdoor unit in a place where its air inlet/
-
air inlet side facing the wall.
Avoid the following places for installation where air conditioner
• Where there is much machine oil.
Pipe length and height difference
30 m
10/15 m
10
20 g/m
8 mm