Hitachi RAS-F24CF Installation Manual

FOR SERVICE PERSONNEL ONLY
SPLIT UNIT AIR CONDITIONER

INSTALLATION MANUAL

Indoor Unit Outdoor Unit
RAS-F24CF RAC-F24CF

SAFETY PRECAUTION

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.
●
! 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.
This air conditioner uses new refrigerant HFC (R410A)
The basic installation work procedures are the same as conventional refrigerant (R22) models.
However, pay careful attention to the following points:
(1) Since the working pressure is 1.6 times higher than that of conventional refrigerant (R22) models, some of the piping and installation and service tools are special.
Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant R410A model, always replace the conventional piping and fl are nuts with the
R410A piping and fl are nuts.
(2) Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous charging with conventional refrigerant (R22) and for safety. Therefore,
check beforehand. [The charging port thread diameter for R410A is 1/2 UNF 20 threads per inch.]
(3) Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with refrigerant (R22) models. Also, when storing the piping, securely seal the
openings by pinching, taping, etc.
(4) When charging the refrigerant, take into account the slight change in the composition of the gas and liquid phases, and always charge from the liquid phase side whose
composition is stable.
Please request your sales agent or qualifi ed technician to install your unit. Water leakage, short circuit or fi re 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 fi re.
● 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 specifi ed wire for connecting the indoor and outdoor units. Please ensure that the connections are tight after the conductors of the wires are inserted
into the terminals. Improper insertion and loose contact may cause overheating and fi re.
● Please use the specifi ed components for installation work. Otherwise, the units may collapse or water leakage, electric shock and fi re may occur.
● Be sure to use the specifi ed piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
● When installing or removing an air conditioner, only specifi ed 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 which may result in a rupture.
● Be sure to fully ventilate the work area if there is a refrigerant gas leak. If the refrigerant gas comes into contact with fi re, a poisonous gas may occur.
● After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into the room, a poisonous gas may occur
when coming into contact with fi re in the fan-driven heater, space heater, etc.
● Unauthorized modifi cations to the air conditioner may be dangerous. If a breakdown occurs, electric shock and fi re, etc. please call a qualifi ed air conditioner technician or
electrician. Improper repairs may result in water leakage.
A circuit breaker or fuse (25A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
●
The external switch shall be incorporated to completely disconnect from power supply. It should disconnect all poles, and a contact separation of
at least 3mm must be present.
● Do not install the unit near a location where there is fl ammable gas. The outdoor unit may catch fi re if fl ammable gas leaks around it.
● Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist fl ows 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, breake the plastic parts of the indoor unit.
● Please ensure smooth fl ow of water when installing the drain hose.
● Piping shall be suitably supported with a maximum spacing of 1m between the supports.
Installation of Hanger, Wall Penetration and Installation of Protection Pipe
CAUTION
!
● The draining of the water container inside the indoor unit can be done from the
left. Therefore the hanger must be fi xed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may overfl ow the water container.
● Please use hidden beams in the wall to hold the hanger.
Procedures of Installation and Precautions
● Procedures to fi x the hanger.
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
● Procedures to fi x the holder of remote control.
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
Wall Penetration and Installation of Protection Pipe
Drill a ø 65mm hole on
●
wall which is slightly
t i l t e d t o w a r d s t h e
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 to
avoid dripping of rain
water into the room.
< >
IA1251: A
INS RAS-RAC-F24CF (EN).indd 1 INS RAS-RAC-F24CF (EN).indd 1
Carefully read through the procedures of proper
●
installation before starting installation work.
The sales agent should inform customers regarding
●
the correct operation of installation.
Tools Needed For Installation Work
( mark is tool exclusive use for R410A)
● + ●
– Screwdriver Measuring Tape
● Pipe Cutter ● Hexagonal Wrench Key (
● ●
Power Drill (ø 65mm ~ ø 80mm)
● Pliers or Wrench ● Torque Wrench
Adaptor Flare Tool Gas Leakage Detector
Manifold Valve Charge Hose ● Reammer
WARNING
!
CAUTION
!
2 Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
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 hanger.
● The projection at the lower part of the Indoor unit is hooked onto the hanger.
HOW TO REMOVE INDOOR UNIT FROM HANGER
● Pull down PULL section on the bottom of indoor
unit and pull it towards you, then claws are
released from hanger. (Indicated by 2 arrows
in the drawing on the right.)
● When bottom face of indoor unit cannot be
pulled due to obstacles, etc. Remove front cover,
insert screw driver into circle hole, pull claws
down and pull indoor unit towards you.
● Please check how to remove and attach front
cover in this instruction manual.
3. Fix the hanger on wall
with 4.1 x 32 screw
HORIZONTAL PIPING
(As shown in fi gure below)
Preparation
Change of Drain Hose and Installation Procedures.
● Exchange the location of drain hose and drain cap during horizontal piping as shown in
fi gure 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).
WARNING
! CAUTION
!
Be sure that the wire is not
in contact with any metal HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
in the wall. Please use
● During horizontal or downward piping, use a knife to cut
the protection pipe as wire
openings as shown in fi gure. Then smoothen the edges of
passing through the hollow
part of the wall so as to openings with a fi le.
prevent the possibility of
damaged by mouse.
Unless it seals completely,
any air with high humidity
flows from outdoor and
any dew may drop.
THE CHOICE OF MOUNTING SITE
WARNING
!
● The unit should be mounted at stable, non-vibratory location
which can provide full support to the unit.
CAUTION
!
●
No nearby heat source and no obstruction near the air outlet is
allowed.
● The clearance distances from top, right and left are specifi ed in
fi gure below.
●
● ● The location must be convenient for water drainage and pipe
Knife Saw
connection with the Outdoor unit.
4mm)
●
To avoid interference from noise please place the unit and its
Vacuum Pump
remote controller at least 1m from the radio, television and inverter
Vacuum Pump
type fl uorescent lamp.
● To avoid any error in signal transmission from the remote controller,
● File
please put the controller far away from high-frequency machines
and high-power wireless systems.
● The installation height of indoor unit from fl oor must be 2.3m or
more.
Names of Indoor Components
No. Item Qty
Hanger
1
1
Screw for Hanger
6
2
( 4 . 1 x 3 2 )
Holder for Remote
Controller
1
3
AAA Size Battery
4 2
Screw for holder of
Remote Controller
2
5
( 3 . 1 x 1 6 )
Remote Controller
1
6
CAUTION
!
Please pull the lower part of
the Indoor unit outwards to
check if the unit is hooked
onto the hanger. Improper
i n s t a l l a t i o n m a y c a u s e
vibration and noise.
Condensed water may leak out if not inserted properly.
● Turn the piping while holding down the lower
portion of pipe-support by hand.
(Please note the following matters and obtain permission from customer before installation).
● The Outdoor unit must be mounted at a location which can sup-
port heavy weight. Otherwise, noise and vibration will increase.
●
Selecting the installation location: Suitable location that will reduce
the impact from rain and direct sun that may affect the unit
performance. Besides that, ventillation must be good and clear
of obstruction.
● The air blown out of the unit should not point directly to animals
or plants.
● The clearances of the unit from top, left, right, front and back are
specifi ed in fi gure below. At least 3 of the above sides must be
open air.
●
Be sure that the hot air blown out of the unit and noise do not
disturb the neighbourhood.
● Do not install at a location where there is fl ammable gas, steam,
oil and smoke.
● The location must be convenient for water drainage.
● Place the Outdoor unit and its connecting cord at least 1m away
from the antenna or signal line of television, radio or telephone.
This is to avoid noise interference.
●
Do not install outdoor unit facing strong wind direction. It may
damage the fan motor.
Direction of Piping
Figure showing the Installation of Indoor and Outdoor Unit.
! CAUTION
In case the pipe length is more than
T h e r e a r e 4 d i r e c t i o n s
8m, add refrigerant R410A at 10 gram
allowed, namely, horizontally
per every meter exceeds. However,
perpendicular to the unit,
pipe length shall not exceed 15m.
vertically down from right,
horizontally out from right and
horizontally out to left.
Don't form the piping downward
Be sure to
at the left of the unit. completely
seal any
gap.
Dimension of Mounting Stand
of the Outdoor unit
(unit : mm)
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
The refrigerating pipes should be adjusted to fi t
●
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, fi t the connecting cord and pipes
into the space available under the indoor unit. Use
holder to hold them tight.
●
Holder can be attached at the either of 2 places.
Please select the easier position.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
● The refrigerating pipes and connecting cord
transform and are attached.
The end of the refrigerating pipes are at locations
●
marked with " " symbol.
Installation
Hang the Indoor unit onto the hanger. Use the temporary
stand at the back of the Indoor unit to push its lower part
15cm forwards.
● Place the drain hose through the hole on the wall.
● Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe. (As shown as right fi gure)
● 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 hanger.
Heat insulation pipe
Pull this to the front
Connecting
during the connection
cord
of refrigerating pipes
Refrigerating pipe
to ease task.
3 Installation of Drain Hose
You are free to choose the side (left or right) for the installation of drain
!
hose. Please ensure the smooth fl ow of condensed water of the Indoor
CAUTION
unit during installation. (Carelessness may result in water leakage.)
WARNING
!
CAUTION
!
CAUTION
!
● The installation height
of indoor unit must be
2.3m or more.
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commercial
products).
The difference in height
●
between the indoor and
outdoor unit should be
kept max 10m.
● The connecting pipe,
no matter big or small,
should all be insulated
with insulation pipe and
then wrapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
CAUTION
!
The rubber strap used for
●
fi xing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
CAUTION
!
● Please fi x in the plastic core
after fl aring to avoid plastic
chips entering the pipes.
CAUTION
!
Be sure that the
drain hose is not
loosely connected
or bend.
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