Installation Of Indoor Unit - Mitsubishi Heavy Industries SRK20ZJX-S Service Manual

• 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
(Attached to the rear of the indoor unit)
Wireless remote control 1
Remote control holder 1
Tapping screws
4
(for installation board 4dia. by 25mm)
Wood screw
2
(for remote control switch holder 3.5(mm). by 16mm)
2
Battery [R03(AAA,Micro) 1.5V]
Air-cleaning filters 2
Filter holders
2
(Attached to the front panel of indoor unit)
Insulation (#486 50 x 100 t3)
1
Option parts Q'ty
1
Sealing plate
1
Sleeve
Inclination plate 1
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.
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

Installation of Installation board
Look for the inside wall structures (Intersediats support or pillar and finally
install the unit after level surface has been checked.)
450
Level position (2 locations)
Mating mark for
level surface
Fixing on concrete wall
Use of nut anchor Use of bolt anchor
Bolt Nut
(M6 12)
(M6)
Mounting
board
Mounting
Max.10
board
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 b Top
Outdoor side
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.
Installing the support of piping
In case of piping in the right rear direction
Shaping of pipings Taping of the exterior
Pipings
Drain hose
Hold the bottom of the Tape only the portion
piping and fix direction that goes through the
before stretching it and wall.
shaping it. Always tape the wiring
with the piping.
Sufficient care must be taken not to damage
the panel when connecting pipes.
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 5m).
• 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.
CAUTION
Completely seal the hole on the wall
with putty. Otherwise, furniture, or
other, may be wetted by leaked
putty
water or dewing.
Adjustment of the installation board in the horizontal
direction is to be conducted with four screws in a temporary
tightened state.
Standard hole
Adjust so the board will be level by turning the board with
the standard hole as the center.
c
b
Turn to
tighten
a
Indoor side Outdoor side Installed state
Matters of special notice when piping from left or central/rear of tha unit.
[Top view]
L e t f h - a n d s - d i e p p i n i g
Piping in the left rear direction
Piping in the left direction
[Drain hose changing procedures]
1. Remove the drain hose. 2. Remove the drain cap. 3. Insert the drain cap.
Remove the screw and Remove it with hand or Insert the drain cap which was removed
drain hose, making it pilers. at procedure "2" securely using a
rotate. hexagonal wrench etc.
Note: Be careful that If it is not Inserted
securely, water leakage may
occur.
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.
6.5 cm minimum from the ceiling
Installation board
putty
Sleeve
(sold separately)
Wireless remote control
Remote control holder
Wood screws
Relation between setting plate and indoor unit
INSTALLATION SPACE (INDOOR UNIT)
(FRONT VIEW)
Space for Indoor unit Space for
service 100
50 service Installation board
120 650 120
220 450 220
35
35
58
54
Drain hose (ø16) 520.8
Piping for Gas 491.1
Piping for Liquid (20 to 60 type) : ø6.35
Piping for Liquid 559.1
Piping for Gas (20 to 35 type) : ø9.52
(50 to 60 type) : ø12.7
Piping hole (ø65) Piping hole (ø65)
R g i t h h - a n d s - d i e p p i n i g
Piping in the right rear direction
Piping is possible in the rear, left,
left rear, left downward, right or
downward direction.
Piping in the right direction
Right
4. Connect the drain hose.
Rear
Downward Left rear
Left downward
Insert the drain hose securely,
making rotate. And install the
screw.
Note: Be careful that If it is not
Inserted securely, water
leakage may occur.
Left