Hitachi RAK-SJ24HNV User manual

I FOR SERVICE PERSONNEL ONLY I
THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation).
~ WARNING
HITACHI
• Carefully read through the procedures of proper
installation before starting installation work.
• The unit should be mounted at stable, non-vibratory location which can provide full support to the unit.
• The sales agent should inform customers regarding
the correct operation of installation.
~CAUTION
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
• No nearby heat source and no obstruction near the air outlet is allowed.
Tools Needed For Installation Work •
The clearance distances from top, right and left are specified in figure below.
• (±) 8 Screwdriver • Measuring Tape • Knife •
The location must be convenient for water drainage and pipe connection with the outdoor unit.
• Saw • Pipe Cutter • Hexagonal Wrench Key ( IO 4mm) • To
avoid interference from noise please place the unit and its remote controller at least 1m from the radio, television and
inverter type fluorescent lamp.
~
Indoor Unit
• Power Drill (065mm ~080mm) • Vacuum Pump • To
avoid any error in signal transmission from the remote controller, please put the controller far away from high-frequency
machines and high-power wireless systems.
• Pliers or Wrench • Torque Wrench • Vacuum Pump Adaptor •
The installation height of indoor unit must be 2.3m or more.
RAK-SJ24HNV
• Flare Tool • Gas Leakage Detector • Manifold Valve
• Charge Hose • Reammer • File
Refrigerant pipe size (outer diameter): Narrow pipe, Liquid (06.35mm); Wide pipe, Gas (015.88mm)
Names of Indoor Components
Figure showing the Installation of Indoor
No. Component's Name Qty
,...
SAFETY PRECAUTION Mounting Plate
•
Read the safety precautions carefully before operating the unit.
•
The contents of this section are vital to ensure safety. Please pay special attention to the following sign . (D
~
WARNING ........ Incorrect methods of installation may cause death or serious injury.
~
CAUTION ......... Improper installation may result in serious consequence.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of
operating the unit as described in the user's guide.
Screw for Mounting Plate
e=-, (4.1x32)
6
There are 6 directions allowed, namely,
horizontally perpendicular to the unit,
vertically down from right, horizontally out
from right, horizontally out to left,
horizontally out to right, vertically down from
left.
&,WARNING Holder for Remote
Controller
Don't form the piping downward at the left of
the unit.
• Flare nut must use a torque wrench without fail. Tighten with the specified tightening torque. If the flare nut is tightened too much, after a long period of time,
the flare nut breaks, Gas leakage, stagnation, touching fire, rarely cause ignition.
• Sharp bending of the pipe use the polyethylene rod, bend not crushed the pipe. Gas leakage from the crushed part, stagnation, touching fire, rarely cause
ignition.
• Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you do the installation work yourself.
• Please observe the instructions stated in the installation manual during the process of installation. Improper installation may cause water leakage, electric
shock and fire.
• Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the units may collapse and impose
danger.
• Observe the rules and regulations of the electrical installation and the methods described in the installation manual when dealing with the electrical work. Use
power cables approved by the authorities of your country.
• Be sure to use the specified wire for connecting the indoor and outdoor units. Please ensure that the connections are tight after the conductors of the wire
are inserted into the terminals. Improper insertion and loose contact may cause over-heating and fire.
• Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock and fire may occur.
• Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
• When installing or removing an air conditioner, only specified refrigerant (R410A) shall be allowed, do not allow air or moisture to remain in the refrigeration
cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture may be caused.
• Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous gas may occur. Be aware that
refrigerants may not contain an odour.
• After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into the room, coming into
contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.
• Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner technician or electrician.
Improper repairs may result in water leakage, electric shock and fire, etc.
• Be sure to install a ground fault circuit interrupter. Failure to install a ground fault circuit interrupter may result in electrical shocks or fire.
• This appliance is not intended for use by persons (including children) with reduced physical sensory or mental capabilities or lack of experience and knowledge,
unless they have been given supervision or instruction ooncerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
• Appliance shall be installed in accordance with national wiring regulations.
&, CAUTION
• A circuit breaker must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
A main switch with a contact gap of more than 3mm has to be installed in the power supply line to the outdoor unit. g-
-•_D_o_n_o_t-in-s-ta-11-th-e-un-it_n_e_a_r _a_lo_c_a-tio_n_w-he_r_e-th-e-re-is-f-la_m_m_a_b_le_g_a_s_. T_h_e_o_u-td_o_o_r_u-ni-t _m_a_y_c-at-ch-fi-re_i_f --------- \ ,a .
flammable gas leaks around it.
• Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist flows to the indoor unit. The oil will deposit on the heat
exchanger, thereby reducing the indoor unit performance and may deform and in the worst case, break the plastic parts of the indoor unit.
• Please ensure smooth flow of water when installing the drain hose.
• Piping shall be suitable supported with a maximum spacing of 1m between the supports.
®
AAA Size Battery
©
~
Screw for holder of
Remote Controller
®
@illI>
(3.1x16)
Remote Controller
® o □□ oo
DOD
DODO
Purifying Filter
(j)
\\'l "~
a
Installation of Hanger, Wall Penetration and Installation of Protection Pipe
El
Installation of the Indoor Unit
2
2
2
~ CAUTION VERTICALLY DOWNWARD PIPING
• The draining of the water container inside the indoor unit can be done from the left.
Therefore the mounting plate must be fixed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may overflow the water container.
Direct Mounting On The Wall
• Please use hidden beams in the wall to hold the mounting plate.
Screw for Mounting Plate
Please use more
than 4 screws.
-+- Mounting
plate
Hole for pipe
Procedures of Installation and Precautions
• Procedures to fix the mounting plate.
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
~
II G)Mount;agplaJe
E Plug
E @Screw--.
a,
i ~
32mm Wall ~
3. Fix the mounting plate on wall
with 4.1 x 32 screw
(As shown in figure below)
Ceiling
II/I/Ill/II/Ill/Ill/Ill I I I I I
4.1 x 32 Screw
• Procedures to fix the holder of remote control.
( Preparation )
• Connect connecting cord.
• Pull out the pipe, connecting cord and drain hose.
( Installation )
• The upper part of the indoor unit is hanged on the mounting plate.
• The projection at the lower part of the indoor unit is hooked onto the mounting plate.
Mounting plate . [ ] "r.JJ Mounting plate
'-..u--=:: ,~ - -=-- Pipe then force it ·· · :'
'<;:::::62:q·:,:, ::zl· ;;;;,.1:=, downwards. · -·
Protection/'n ~
Pipe Drain Hose Connecting card . .
Pr0Ject1on
it CAUTION
Please pull the lower part of
the indoor unit outwards to
check if the unit is hooked
onto the mounting plate.
Improper installation may
cause vibration and noise.
HOW TO REMOVE INDOOR UNIT
• Push up the (PUSH) sections at the bottom of the indoor unit and
pull the bottom plate towards you. Then the claws are released from
the stationary plate.
(The (PUSH) sections are indicated by 2 arrows in the right figure)
HORIZONTAL PIPING
( Preparation )
Change of Drain Hose and Installation Procedures.
/g
[Push] mark positions
• Exchange the location of drain hose and drain cap during horizontal piping as shown in
figure below. Be sure to plug in the drain hose until the insulating material folds upon itself.
• Please use pliers to pull ~
out the drain cap.
(This is an easier way to ,
remove the drain cap). "".-
Drain hose
Lt, CAUTION
For horizontally out to right piping
IZI GOOD
For right piping, follow the instruction as below:
• Press the upper side of clamp
• Unfold the pipe to downward slowly.
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
@Remote
Control
Holder
Draiacap~
, .............. ~:::~
Drain hose~ -----
~'~
~\
~
• Bend the pipe to the right side ofchassis.
Plug
• Remove the cap for
drain hose installation
Wall Penetration and Installation of Protection Pipe
• Drill a 065mm hole on
wallwhichisslightlytilted llndoorl !Outdoor! ~ WARNING
towards the outdoor side.
Drill the wall at a small
angle.
• Cut the protection pipe
according to the wall
thickness.
• Empty gap in the sleeve
of protection pipe should
be completely sealed with
putty to avoid dripping of
rain water into the room.
<IA2156:@>
2~5mm
Sleeve of
protection
pipe
Be sure that the wire is not
in contact with any metal
in the wall. Please use
the protection pipe as wire
passing through the hollow
part of the wall so as to
prevent the possibility of
damaged by mouse.
Unless it seals completely,
any air with high humidity
flows from outdoor and
dew may drop.
Drain cap shall
be fully tightened
by pushing with
Hexagonal wrench
key when changing
location.
Drain hose
Please insert
until here
Condensed water
may leak out if not
inserted properly.
liJ BAD
Following bending from left to right directly
could cause damage to pipe.
Be sure to
completely
seal any gap
with putty.
The indoor piping
should be insulated with
the enclosed insulation
pipe. (If the insulator is
insufficient, please use
commercial products).
• The connecting pipe,
no matter big or small,
should all be insulated
with insulation pipe
and then wrapped
with plastic tape. (The
insulator will deteriorate
if it is not wrapped with
tape).
The connection of
insulated drain hose.
inner diameter 016mm
~
Please use insulated
drain hose for the
indoor piping
(commercial product).
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
• The refrigerating pipes should be adjusted to fit into the hole
on the wall and then ready for further connection.
• The terminals of 2 connected pipes must be covered with insulator
used for terminal connection. Then the pipes are wrapped with
insulation pipe.
• Connect the connecting cord after removing electrical cover.
(Refer to "CONNECTION OF POWER CORD")
• After adjustment, fit the connecting cord and pipes into the
space available under the indoor unit.
• When connection is at left side, refrigerating pipe and cabinet
shall be tied together.
Drain hose
'~.· .. ·
{:,,··~
it CAUTION
Failing to do so may cause the unit bottom side become warping.
Excess binder shall be cut to prevent abnormal sound and water
dripping.
Hook portion for binder tightening
Binder
~ Refrigerating
~Pipe
• The rubber strap used
for fixing the insulator
should not be tied with
great force. Otherwise,
this will damage heat
insulation and causes
water condensation.
Insulation pipe (must be wrapped with
vinyl tape at every 120mm.
Hook/ \ ,, Insulator
' \ Drain Hose
~
Pipe Rubber strap tied
with great force
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
( Preparation To Install Refrigerating Pipes )
~CAUTION
• The refrigerating pipes and connecting cord
arrangement are attached.
• The end of the refrigerating pipes are at locations
marked with " V" symbol.
• Please fix in the plastic core
after flaring to avoid copper
chips entering the pipes.
Please bend at a small
radius to form an arc
0.85m
( Installation )
Hang the Indoor unit onto the mounting plate. Use the temporary
stand at the back of the Indoor unit to push its lower part
150mm forwards.
• Place the drain hose through the hole on the wall.
• Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
• Connect the connecting cord after removing electrical cover.
(Refer to "Connection of Power Cord")
• After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the Indoor unit.
• The projection of Indoor unit must hook to the mounting plate.
Heat insulation pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
~ Connecting
~corn
Refrigerating pipe
El
Installation of Drain Hose
~
~
,
'\
'.
i f
: I ITT
ni ,; ~--
~ tc water pond
Bending Condensed
upwards water pond - ·
~~JJIJIIIIJlllll£1%{:lf ~~~w
~~mg-•
~
about 150mm
i'.tCAUTION
Be sure that the
drain hose is not
loosely connected
or bend.
You are free to choose the side (left or right) for the installation of drain
hose. Please ensure the smooth flow of condensed water of the Indoor
CAUTION unit during installation. (Carelessness may result in water leakage.)

a Preparation of Pipe
• Use a pipe cutter to cut the copper pipe. B Pipe Connection
.1,CAUTI0N
In case of removing flare nut of an Indoor unit, first remove a nut of small diameter side, or a seal cap
of big diameter side will fly out. Prevent water from entering into the piping when working.
~
~~-- Trimmingtool
Copper pipe
'
~
Outer diameter Torque
N.m
of pipe (kgf.cm)
mm (inch)
it. CAUTION
~~t
Small dia. side 6.35 (1/4") 13.70 ~18.60 (140 ~190)
9.52 (3/8") 34.30 ~44.10 (350 ~450)
• Jagged edge will cause leakage. Large dia. side 12.7 (1/2") 44.10 ~53.90 (450 ~550)
• Point the side to be trimmed downwards during trimming to prevent copper chips from entering the pipe.
Wrench ~ /l4__ Torque
ff )'~......_wrench 15.88 (5/8") 49.00 ~58.80 (500 ~600)
• Before flaring, please put on the flare nut. Small dia. side 6.35 (1/4") 19.60 ~24.50 (200 ~250)
Valve 9.52 (3/8") 19.60 ~24.50 (200 ~250)
head cap Large dia. side
D~
~A
Copper pipe
• Recommend to use
R41 0A flaring tool Valve core cap
12.7 (1/2") 29.40 ~34.30 (300 ~350)
15.88 (5/8") 29.00 ~31.00 (296 ~316)
12.30 ~15.70 (125 ~160)
Outer
Diameter
Thickness
Flare tool for R41 0A
mm (inch)
mm
Clutch type
6.35 (1/4) 0.8 0.0 ~0.5
9.52 (3/8) 0.8 0.0 ~0.5
( Lt WARNING I • THIS APPLIANCE MUST BE GROUNDED.
Procedures of Wiring
In case that power is supplied from Indoor Unit
Indoor Unit
Connecting Cord
Detail of cutting the connecting cord
Indoor Unit
Green+ Yellow
(ground)
Control line
Lt WARNING
• The naked part of the wire core should be 10mm and fix it to the terminal
tightly. Then try to pull the individual wire to check if the contact is tight.
Improper insertion may burn the terminal.
• Be sure to use only power cables approved from the authorities in
your country. If the supply cord is damaged, it must be replaced by the
manufacturer, its seivice agent or similarly qualified person in order to to
avoid a hazard.
• Please refer to the following for wire connection to the terminals of the
units. The cabling must meet the standards of electrical installation.
• There is a AC voltage drop between the L and N terminals if the power
is on. Therefore, before servicing, be sure to remove the plug from the
AC outlet or switch off the main switch.
(~ ________ G_a_s_L_ea_k_a_g_e_ln_s_p_e_c_t_io_n ________ )
L'.t,.WARNING
Amm
Please use gas leakage detector to check if leakage
Clutch type
Wing nut type
occurs at the connection of Flare nut as
shown on the right. BURST HAZARD
Do not allow air, etc. to get into
refrigerant cycle (piping)
1.0 ~ 1.5
1.5 ~2.0
1.0 ~ 1.5
1.5 ~2.0
If gas leakage occurs, further tighten the connection
to stop leakage. (Use the detector provided for
R410A)
RISK OF EXPLOSION
Compressor must be stopped before
removing refrigerant pipes.
All service valve must be fully closed
after pumping down operation.
Wiring Of The Indoor Unit
• For wire connection of the indoor unit, you need to remove the front cover,
the low cover under the body of the unit and terminal cover.
• Remove the cover from the terminal base and screw the cable.
After remove the
screw and terminal
cover, and put the
connecting cords and
fix the terminal cover
with screw.
Method to remove electrical cover
• Remove the screw and electrical cover.
3
Cord band
• Insert the connecting cord (1, 2, 3) from the back of unit.
• Fixed the wire to terminal wires firmly as shown as below.
Electrical cover
Sere Connecting cord
!l
D
.1, WARNING
• Leave some space in the connecting cord for
maintenance purpose and be sure to secure it
with the cord band.
• Secure the connecting cord along the coated part
of the wire using the cord band. Do not exert
pressure on the wire as this may cause overheating
or fire.
How to connect the optional parts
(Dry contact, H-Link/Wi Fi (optional}, Wired remote, Run status)
• For cable connection to control P.W.B., you need
to remove front cover and electrical box cover.
Each connecting location is as below.
G) Dry contact: CN6
® H-LINK/Wi Fi: CN7
@ Wired Remote Controller: CN18
@) Run status: CNS
• Please check and confirm manuals attached to each
optional parts for more connection details.
• You can refer to this installation manual how to
remove and re-attach the front cover.
• Please be careful not to damage lead wires by
edge of plate when connecting the optional parts.
CN7
a Insulation
And Maintenance Of Pipe Connection B Installation Of Remote Controller ( How to remove the front cover ) ( How to attach the front cover )
• The connected terminals should be completed sealed with heat insulator
and then tied up with rubber strap.
• Please tie the pipe and power line together with vinyl tape as shown in
the figure showing the installation of indoor and outdoor units. Then fix
their position with holders.
• To enhance the heat insulation and to prevent water condensation, please
cover the outdoor part of the drain hose and pipe with insulation pipe.
• Completely seal any gap with putty.
Insulation material for pipe connection
~~
Sleeve of
protection~ipe / 'i
:·: ,: Putty
:..
Putty :i ::
El
Power Source And Operation Test
( Power Source )
.1, CAUTION
• Please use a new socket. Accident may occur due to the use of old
socket because of poor contact.
• Please plug in and then remove the plug for 2 - 3 times. This is to
ensure that the plug is completely plugged into the socket.
• Keep additional length for the power cord and do not render the plug
under external force as this may cause poor contact.
• Do not fix the power cord with U-shape nail.
( Operation Test )
• Please ensure that the air conditioner is in normal operating condition
during the operation test.
• Explain to your customer the proper operation procedures as described
in the user's manual.
<IA2156:@>
• The remote controller can be placed in its holder which is fixed on wall or beam.
• To operate the remote controller at its holder, please ensure that the unit can
receive signal transmitted from the controller at the place where the holder is to
be fixed. The unit will beep when signal is received from the remote controller.
The signal transmission is weaken by the florescent light. Therefore, during the
installation of the remote control holder, please switch on the light, even during
day time, to determine the mounting location of the holder.
The controller should be insert from top into bottom side of the holder
as shown in figure below.
~
J ~ Romom c,,.,m""
b- Screw (2 pieces)
~ Holder for Remote Controller
• How to check pipe bending.
-Compare bended pipe with the picture below.
- If bended pipe is not good enough, cut bended area and bend it again.
all areas are smooth, no notching area
r==========~/··1
I '
s. ~============================================s=-~-~.,J
\_"'t t r"'
CD CD CD
CD Remove the caps and unscrew at lower
portion of the front cover.
® ® ®
® Firmly press 4 hooks at top of front cover
by tools until the hook release from slot
® Pull the front cover to front side.
®
@
©
no scratch or mark inside
all have the same length
CD
®
@
there are scratches around bending area
crack
TI
I I
@ phase of bending is too long different length
® slanting
CD
sample of bending pipe cannot be used
CD CD
CD
CD
~
+ + + I
CD To assemble front cover back to the unit,
certainly hook at upper portion (4 places).
(Li
J
~f
t t
@ ® @ ® @
® Insert the bottom of front cover into the
slot at "PUSH" marking and ensure bottom
area is align from left to right.
® Tighten the screw and cover by caps (3
places)
TI
i: l
Q