Mitsubishi Heavy Industries SRK20ZJX-S Service Manual page 149

• Do not put the drainage pipe directly into drainage channels where
poisonous gases such as sulphide gas can occur.
Poisonous gases will flow into the room through drainage pipe and
seriously affect the user's health and safety.
• Ensure that no air enters in the refrigerant circuit when the unit is
installed and removed.
If air enters in the refrigerant circuit, the pressure in the refrigerant circuit
becomes too high, which can cause burst and personal injury.
BEFORE INSTALLATION
Before installation check that the power supply matches the air conditioner.
Standard accessories (Installation kit)
Q'ty
Accessories for indoor unit
Installation board
1 1
(Attached to the rear of the indoor unit)
2 Wireless remote control 1
3 Remote control holder 1
Tapping screws
4 9
(for installation board 4dia. by 25mm)
Wood screws
5 2
(for remote control switch holder 3.5(mm). by 16mm)
6 2
Battery [R03(AAA,Micro) 1.5V]
7 2
Air-cleaning filters
Filter holders
8 2
(Attached to the front panel of indoor unit)
9 Pipe cover (200mm) 1
Band
10 2
Option parts
Q'ty
1
Sealing plate
Sleeve 1
1
Inclination plate
1
Putty
1
Drain hose (extention hose)
Piping cover
1
(for insulation of connection piping)
Necessary tools for the installation work
1 Plus headed driver
2
Knife
3
Saw
4
Tape measure
5
Hammer
6 Spanner wrench
( )
14.0 ~ 61.0N m
7 Torque wrench
(1.4 ~ 6.1kgf m)
8 Hole core drill (65mm in diameter)
9
Wrench key (Hexagon) [4m/m]
( )
Designed specifically
10 Flaring tool set
for R410A
( )
Designed specifically
11 Gas leak detector
for R410A
Gauge for projection adjustment
12
( )
Used when flare is made by using
conventional flare tool
13 Pipe bender
• Do not processing, splice the power cord, or share a socket with
other power plugs.
This may cause fire or electric shock due to defecting contact, defecting
insulation and over-current etc.
• Do not bundling, winding or processing for the power cord. Or, do
not deforming the power plug due to tread it.
This may cause fire or heating.
SELECTION OF INSTALLATION LOCATION
(Install at location that meets the following conditions, after getting approval from the customer)
Indoor unit
Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed.
A solid place where the unit or the wall will not vibrate.
A place where there will be enough space for servicing. (Where space mentioned below can be secured)
Where wiring and the piping work will be easy to conduct.
The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting.
A place where it can be easily drained.
A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.)
Places where this unit is not affected by the high frequency equipment or electric equipment.
Avoid installing this unit in place where there is much oil mist.
Places where there is no electric equipment or household under the installing unit.
Install the indoor unit on flat wall.
Wireless remote control
A place where the air conditioner can be received the signal surely during operating the wireless remote control.
Places where there is no affected by the TV and radio etc.
Do not place where exposed to direct sunlight or near heat devices such as a stove.
INSTALLATION OF INDOOR UNIT
Open and detachment of the air inlet panel
To open, pull the panel at both ends of upper part
and release latches, and undo the strings.
Then remove the panel.
CAUTION
When removing the air-inlet panel,
be careful not to drop it on your feet.
How to remove the front panel
1 Remove the air inlet panel.
2 Remove the 5 set screws.
3 Remove the 3 latches in the upper section.
If the latches are difficult to remove, push the latch
portion out using a screw driver, for example.
4 Move the lower part of the panel forward and
remove the 6 latches in the under section.
Drilling of holes and fixture of sleeve (Option parts)
When drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use pipe hole sleeve sold separately.
Indoor side Outdoor side b Top
5
65
Thicknese of the wall + 1.5cm
Drill a hole with whole core drill. In case of rear piping draw out, cut off the lower
and the right side portions of the sleeve collar.
Indoor unit piping direction
Piping is possible in the rear,
For Right or Left rear piping
left,left rear, left downward,
right or downward direction.
18.5
Right
Rear
65
Downward Left
Left rear
Left downward
65
Left rear piping
Drainage
Arrange the drain hose in a downward angle CAUTION
Avoid the following drain piping.
Higher than specified The drain hose Wavy The gap to the ground is
5 cm or less
tip is in water
the strong light beam (in case of the infrared specification unit).
• Locations where an equipment affected by high harmonics is placed (TV
set or radio receiver is placed within 1m).
• Locations where drainage cannot run off safely.
It can affect performance or function and etc.
• Do not install the unit near the location where leakage of
combustible gases can occur.
If leaked gases accumulate around the unit, it can cause fire.
15 cm or below from the floor
Latch
Latch
c
b
Turn to
tighten
a
Indoor side Outdoor side
Installed state
For Right or Left piping
91.5
Right/Left piping
65
65
60
Right rear piping
Go through all installation steps and check if the
dralnage is all right. Otherwise water leak may occur.
Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor.
When the extended drain hose is indoor, always use a shield pipe (to be arranged by the user) and ensure it is
thermally insulated
Odor from
the gutter
Drain hose
The drain hose
tip is in the gutter
It can cause electric shocks.
• Do not touch any refrigerant pipes with your hands when the
system is in operation.
During operation the refrigerant pipes become extremely hot or extremely
cold depending the operating condition, and it can cause burn injury or
frost injury.
7 cm minimum from the ceiling
Installation board
Sleeve
(sold separately)
Wireless remote control
Remote control holder
Wood screws
CAUTION
Indoor side Outdoor side
Completely seal the hole on
putty
the wall with putty. Otherwise,
furniture, or other, may be
wetted by leaked water or
putty
dewing.
Installing the support of piping
In case of piping in the right rear direction
Taping of the exterior
Tape only the portion
that goes through the
wall.
Always tape the wiring
with the piping.
Sufficient care must be taken not to damage
the panel when connecting pipes.
For Right or Left bottom piping CAUTION
Be careful not to
stress the connecting
76.3 157.2 85.3 22.7
refrigerant pipse. (Do
not pull with a force of
larger than 5 kgf.) If
improperly installed,
it may cause abnormal
noise and vibration.
Left bottom piping
Right bottom piping
Shield pipe
Extended drain hose
When it is exposed indoor.