Hitachi RAK-35NH6 Installation Manual

FOR SERVICE PERSONNEL ONLY
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
RAK-18NH6
RAK-25NH6
HFC
Indoor Unit
RAK-35NH6
R410A
RAK-50NH6
SAFETY PRECAUTION
G Read the safety precautions carefully before operating the unit.
G 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.
WARNING
!
G 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.
G
Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and fire.
G
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.
G
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.
G
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.
G Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.
G Be sure to use the specified piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.
G 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.
G
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.
G
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.
G
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.
CAUTION
!
G
A circuit breaker or fuse (16A time delay) 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 Do not install the unit near a location where there is flammable gas. The outdoor unit may
catch fire if flammable gas leaks around it.
G
Please ensure smooth flow of water when installing the drain hose.
G Piping shall be suitable supported with a maximum spacing of 1m between the supports.
1 Installation of Hanger, Wall Penetration and Installation of Protection Pipe
CAUTION
!
G The draining of the water container inside the indoor unit can be done from the left.
Therefore the hanger 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
G Please use hidden beams in the wall to hold the hanger.
200mm
125mm
80mm
45mm
60mm
780mm
Mark
Screw for Hanger
Please use more
than 4 screws.
Procedures of Installation and Precautions
Procedures to fix the hanger.
G
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
Wall
1 Hanger
Plug
2 Screw
32mm
Wall
Procedures to fix the holder of remote control.
G
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
Wall
3 Remote
Control
Holder
5 Screw
20mm
Plug
Wall Penetration and Installation of Protection Pipe
Drill a ø 65mm hole on
G
wall which is slightly tilted
Indoor Outdoor
towards the outdoor side.
2 ~ 5mm
Seal with
Drill the wall at a small
putty
Seal with
angle.
putty
Cut the protection pipe
G
according to the wall
thickness.
G Empty gap in the sleeve
of protection pipe should
WALL
Protection
be completely sealed
pipe
with putty to avoid Sleeve of
protection
dripping of rain water into
pipe
the room.
< >
IA194: A
G Carefully read through the procedures of proper
installation before starting installation work.
G The sales agent should inform customers regarding
the correct operation of installation.
Tools Needed For Installation Work
G + – Screwdriver G Measuring Tape
G Saw G ø 65mm Power Drill G Hexagonal Wrench
Key ( 4mm) G Wrench (14, 17, 22, 26, 27mm)
G Gas Leakage Detector G Pipe Cutter
G Vinyl Tape G Pliers G Flare Tool
2 Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
Preparation
G Connect connecting cord.
G Pull out the pipe, connecting cord and drain hose.
Installation
The upper part of the Indoor unit is hanged on the hanger.
G
G The projection at the lower part of the Indoor unit is hooked onto the hanger.
125mm
Hanger
Refrigerating
Pipe
45mm
115mm
Protection
Level
Connecting
Pipe Drain Hose
Cord
Hanger
450mm
HOW TO REMOVE INDOOR UNIT
G Push up the (PUSH) sections at the
bottom of the indoor unit and pull the
Line
bottom plate towards you. Then the
Weight
Hole for pipe claws are released from the stationary
plate.
(The (PUSH) sections are indicated by
2 arrows in the right figure)
3. Fix the hanger on wall
HORIZONTAL PIPING
with 4.1 x 32 screw
(As shown in figure below)
Preparation
Ceiling
Change of Drain Hose and Installation Procedures.
above 50mm
G 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.
G Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain cap).
4.1 x 32 Screw
Drain cap
Please insert
until here
! WARNING
! CAUTION
Be sure that the wire is not
in contact with any metal HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
in the wall. Please use the
G During horizontal or downward piping, use a knife to cut
protection pipe as wire
passing through the hollow openings as shown in figure. Then smoothen the edges of
part of the wall so as to
openings with a file.
prevent the possibility of
Pipe
damaged by mouse.
support
Unless it seals completely,
any air with high humidity
flows from outdoor and
any dew may drop.
Pull up the pipe after
bending downward
THE CHOICE OF MOUNTING SITE
G The unit should be mounted at stable, non-vibratory location which can provide full support to the unit.
G No nearby heat source and no obstruction near the air outlet is allowed.
G The clearance distances from top, right and left are specified in figure below.
G The location must be convenient for water drainage and pipe connection with the Outdoor unit.
G Knife
G 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.
G
To avoid any error in signal transmission from the remote controller, please put the controller far away from high-frequency
G Putty
machines and high-power wireless systems.
G
The installation height of indoor unit must be 2.3m.
Names of Indoor Components
No. Item Qty
Hanger
1
1
2 Screw for Hanger
6
( 4 . 1 x 3 2 )
Holder for Remote
Controller
3
1
AAA Size Battery
4
2
Screw for holder of
5
Remote Controller
2
( 3 . 1 x 1 6 )
Remote Controller
6
1
Purifying Filter
7
1
Holder
8
1
G The difference in height between the indoor and outdoor
unit should be kept max 10m.
G 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).
Connecting cords, pipe and
drain hose must be laid
together with Vinyl tape.
Hanger
1
! CAUTION
Lift the body
Please pull the lower part of
of the unit
upwards and the Indoor unit outwards to
then force it
check if the unit is hooked
downwards.
onto the hanger. Improper
2
installation may cause
vibration and noise.
Projection
[Push] mark positions
Drain cap Drain hose
Drain hose
Please insert
until here
Condensed water may leak out if not inserted properly.
Openings
Turn the piping while holding down the lower
G
portion of pipe-support by hand.
(Please note the following matters and obtain permission from customer before installation).
WARNING
!
CAUTION
!
Direction of Piping
The Length of Indoor Unit
Connecting Cord
There are 4 directions allowed, namely,
horizontally perpendicular to the unit,
Horizontally
perpendicular vertically down from right, horizontally out
0.9m to the unit
1.6m
from right and horizontally out to left.
Don't form the piping downward at the
Connection
left of the unit.
Figure showing the Installation of Indoor Unit.
above 50mm
Be sure to
completely
above 100mm
seal any
gap with
putty.
2,300mm or more
4
5
3
Plug
The connection of insulated drain hose.
inner diameter ø 16mm
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
G
the hole on the wall and then ready for further
connection.
G The terminals of 2 connected pipes must be covered
with insulator used for terminal connection. Then the
pipes are wrapped with insulation pipe.
G Connect the connecting cord after removing electrical
cover. (Refer to "CONNECTION OF POWER CORD")
G After adjustment, fit the connecting cord and pipes
into the space available under the indoor unit. Use
holder to hold them tight.
Holder
8
Insulation pipe (must be wrapped with
vinyl tape at every 120mm).
G 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
G The refrigerating pipes and connecting cord
transform and are attached.
G The end of the refrigerating pipes are at locations
marked with " " symbol.
Please bend at a small
radius to form an arc
0.85m
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.
G
G Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
G Connect the connecting cord after removing electrical cover.
(Refer to "Connection of Power Cord")
G After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the Indoor unit.
G 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
Condensed
Ditch
water pond
Bending Condensed
upwards water pond
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.)
! CAUTION
•
The installation height of indoor
unit must be 2.3m.
2
1
above 100mm
8
6
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).
Drain hose
Connecting
cord
Pipe
! CAUTION
The rubber strap used for
G
fixing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
Pipe Rubber strap tied with great force
CAUTION
!
G Please fix in the plastic core
after flaring to avoid plastic
chips entering the pipes.
below
5mm
Projection
Hook
about 15cm
Protection pipe
Drain hose
Connecting cord
Holder Connected section
CAUTION
!
Be sure that the
drain hose is not
loosely connected
or bend.