Mitsubishi Heavy Industries SRC25ZMP-S Technical Manual page 25

dangerous as the terminal block may heat up and catch fire.
2) Take care not to confuse the terminal numbers for indoor and
outdoor connections.
⑤ Fix the connecting wire by wiring clamp.
⑥ Attach the terminal cover.
⑦ Attach the lid.
Installing the support of piping
●
Piping is possible in the rear, left, left rear,
left downward, right or downward direction. [Top view]
Right
Rear
Downward
Left
Left rear
Left downward
Shaping of pipings Taping of the exterior
Piping
Drain hose
○Hold the bottom of the ○Tape only the portion that
piping and fix direction goes through the wall.
○Always tape the wiring
before stretching it and
shaping it. with the piping.
Sufficient care must be taken not to damage the panel
when connecting pipes.
Drainage
○Arrange the drain hose in a downward angle.
○Avoid the following drain piping.
Higher than specified The drain hosetip is
in water.
Fixing of indoor unit
Indoor unit
Installation
board
Installation board
Wall
Indoor unit base lower latch
R Natural-and/or synch. rubber wire insulation
N Polychloroprene rubber conductors insulation
R Stranded core
4 or 5 Number of conductors
G One conductor of the cable is the earth conductor
(yellow/green)
1.5 Section of copper wire (mm
Matters of special notice when piping from left or central/rear of the unit.
Left-hand-sided piping
Piping in the left rear direction Piping in the right rear direction
Piping in the left direction
[Drain hose changing procedures]
1. Remove the drain hose. 2. Remove the drain cap.
○Remove the screw and drain hose, ○Remove it with hand or pliers.
making it rotate.
Wavy
The gap to the ground is
5 cm or less.
Installation Steps
①Pass the pipe through the hole
in the wall, and hook the upper
part of the indoor unit to the
installation board.
②Gently push the lower part to
secure the unit.
Clamp
○Perform wiring, please take care of connecting the
2 )
terminal number of outdoor unit terminal block.
Right-hand-sided piping
Since this air conditioner has
been designed to collect dew
drops on the rear surface to
the drain pan, do not attach
the power cord above the
gutter.
Piping in the right direction
. 3 n I s e t r h t e d a r n i c a . p
○Insert the drain cap which was removed
at procedure "2" securely using a
hexagonal wrench etc.
Note: Be careful that If it is not inserted
securely, water leakage may occur.
Go through all installation steps and check if the drainage is
all right. Otherwise, water leak may occur.
Odor from
○Pour water to the drain pan located under the heat exchanger,
the gutter
and ensure that the water is discharged outdoor.
○When the extended drain hose is indoor, securely insulate it
The drain hose tip is
with a heat insulator available in the market.
in the gutter.
● How to remove the indoor unit from the installation board
①Push up at the marked portion of
the indoor unit base lower latch,
and slightly pull it toward you.
(both right and left hand sides)
(The indoor unit base lower latch
can be removed from the
installation board)
②Push up the indoor unit upward.
So the indoor unit will be removed
from the installation board.
Screw
Gutter
Pipe accommodating section
. 4 C o n n e t c h t e d a r n i h o s . e
○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.
CAUTION
The marked portion of the indoor
unit base lower latch
CONNECTIO
Preparation
Keep th
n I d o r o
(Do not turn)
Remo
○Remove the flared nuts.
(on both liquid and gas sides)
CAUTION
Do n
● Flaring work
Measurement
Flaring block
Copper pip
Air purge
① Tighten all flare nuts in the
outside wall so as not to c
② Connect operation valve,
and vacuum pump as is il
③ Open manifold valve hand
perform vacuum or evacu
Continue the vacuum or e
minutes or more and chec
gauge reads -0.1MPa.
④ After completing vacuum
handle and stop operation
⑤ After completing vacuum
operation valve (Both gas
hexagon headed wrench.
⑥ Check for possible leakag
parts of both indoor and o
● Since the system uses ch
(for R22) presently in use
●
Please use an anti-rever
into the system. Oil runn
INSTALLATIO
Check the following points aga
At the same time, explain to th
After installation
The power supply voltag
No gas leaks from the jo
Power cables and cross
to the terminal board.
The screw of the lid is ti
The screw of the service
Operation valve is fully o
The pipe joints for indoo