Hitachi RAS-18EX9G Installation Manual

HITACHI SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
INDOOR UNIT / OUTDOOR UNIT
RAS-18EX9G / RAC-18EX9G

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.
• 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 wire which is specified for the air conditioner. A short circuit and fire may
occur due to the use of low quality wire or improper work.
• 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.
• Do not mix any coolant other than R-22 into the cooling circulation path when mounting or shifting the unit. If it is mixed
with air, the high pressure in the circulation path will rise and this may result in broken copper pipes or faults.
• Be sure to use the earth line. Do not place earth line near gas or water pipes, lightning conductor and the
earth line of telephone. Improper earthing may cause electric shocks.
• A circuit breaker should be installed depending on the mounting size of the unit. Without a circuit breaker, the
danger of electric shock exists.
• 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.
• Please ensure smooth flow of water when installing the drain hose.
1 Fresh Air In Exhaust Hose Installation
The Fresh Air In Exhaust function is included in this model. Please follow the "Exhaust hose"
installation instructions when mounting.
Conditions when the fresh air in, exhaust should not be operated. (Please install only with the customer's
consent).
• The fresh air In exhaust should not be operated under the following conditions:
(A) When the fresh air In exhaust hose cannot be vented directly outside the room (mounting work specified for the
embedded ducting).
(B) When there is a source of a questionable odor, smoke, or oily smoke in the vicinity of the opening of the fresh air In
exhaust hose, even if the mounting work directly vents the fresh air In exhaust hose outside the room.
• The fresh air in should not be operated (only exhaust can be operated) under the following conditions:
(C) When there is space to vent the fresh air In exhaust hose between the internal and external walls, which leads outside
the room, even if the mounting work cannot directly vent the fresh air In exhaust hose outside the room (conventional
construction methods).
• Please set the fresh air In exhaust Selection Switch according to the mounting configuration (refer to "Setting the Fresh Air
In Exhaust Selection Switch" on page 13).
In the case of (A) or (C) in the above, fresh air In exhaust can be operated if the fresh air In exhaust hose is vented outside
the room through a hole in the wall (refer to "End Treatment of the Fresh Air In Exhaust Hose" on page 14).
Dimension when Installing included Fittings
• ø 25 Fresh air in exhaust hose (A)
For directly backward piping or horizontally rear-out piping when the
hole in the wall is of ø 70mm or more.
• ø 20 Fresh air in exhaust hose (B)
For directly backward piping or horizontally rear-out piping when the
hole in the wall is of ø 65mm or more.
• When the fresh air in exhaust hose of ø 25 and ø 20 are connected with
a reducing adapter, the dimension range will be as shown in the figure on the right.
UNUSED ACCESSORY
Unused accessories may become necessary in case of transfer of air conditioner. Request your customer to keep all
the unused accessories together with this installation manual and instruction manual.
Use of Accessories
Select ( ) depending on the installation condition.
Anti-insect Anti-insect Hood
net adapter
net
Part Name
use when when fresh air
Remark
selecting ø20 in exhaust
fresh air in outlet cover
exhaust hose is not using.
Backward
piping
Vertically down
( )
from right
Horizontally
piping from right
Horizontally
( )
rear-out piping
Vertically
down from left
Horizontally ( )
piping from left
When the existing
hole in the wall is
out of alignment
( )
in case of directly
backward piping
Vertically down
Backward
from right
piping
Horizontally
rear-out piping
Horizontally
piping from right
Fresh air in exhaust hose (A)
or Fresh air in exhaust hose (A)
or
Fresh air in exhaust hose (B)
Fresh air in exhaust hose (B)
Elbow for
Air duct for rear
right piping
horizontal piping
< IA233 : B >
• 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
G + – Screwdriver Measuring Tape
G G
ø 65mm Power Drill Allen Key ( 4mm)
G
(14, 17, 19, 22mm) Gas Leakage Detector
G
Cutter Plastic Tape Pliers FlareTool
G G G
WARNING
CAUTION
within
0.6m
within
0.6m
Dimensions when installing the fitting for
ø25 and ø20 fresh air in exhaust hose.
Elbow for Reducing Air duct for Fresh air
right piping adapter rear horizontal in exhaust
piping hose (A)
use when connecting
For the hole
ø25 and ø20 fresh in the wall of
air in exhaust hose. 70mm or more
( ) ( )
( ) ( )
( ) ( )
( ) ( )
Vertically
When the existing hole in the
down from left wall is out of alignment in case
of directly backward piping
Horizontally
piping from left
Air duct for rear
horizontal piping
Elbow for left piping
Fresh air in exhaust hose (A) or
Fresh air in exhaust hose (A) or
Fresh air in exhaust hose (B)
Fresh air in exhaust hose (B)
THE CHOICE OF MOUNTING SITE
(Please note the following matters and ontain permission from customer before installation.)
WARNING
• The unit should be mounted at stable, non-vibratory
location which can provide full support to the unit.
CAUTION
Knife Saw
Wrench • No nearby heat source and no obstruction near the air
G
outlet is allowed.
Pipe
G
• The clearance distances from top, right and left are
specified in figure below.
• The location must be convenient for water drainage and
pipe connection with the Outdoor unit.
• 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.
• 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.
• The installation height of indoor unit must be 2.3m or
more in a non public area.
Names Of Indoor Components
No. Item Qty
No.
Mounting Plate
~
1
1
Screw for Mounting
!
2
5
Plate
Holder for
@
3
Remote
1
Controller
#
AAA Size Battery
4
2
$
Screw for Holder of
5 Remote Controller
2
%
Pipe Support
6
1
Remote
^
7 Controller
1
Screw for Earth
(for indoor use)
8
1
&
(Not for 200V
model)
Nano-Titanium
Disinfecting/
Deodorizing/
9
1 *
Air Purifying Filter
Nano-Titanium
~ *
•
Disinfecting/
for fresh air in exhaust work.
Deodorizing/
0 Dust Collecting
1
Fresh Air In Filter
This model is supplied with two hoses. When a hole of ø70mm or more can be made on the wall, use the fresh air in exhaust
hose (A) of ø25. If the hole size is smaller than that, use of the fresh air in exhaust hose (B) of ø20 is recommended with a view
to easy installation. (However, there is no problem in using the fresh air in exhaust hose of ø25 if it can go though the hole of
below ø70mm.)
Make sure to decide which hose, i.e., either air in exhaust hose of ø25 or of ø20, only after obtaining customer's
consent.
Please ensure that the entire length of the two way air exchange hose is within 3m.
2 Length Adjustment of the Fresh Air In Exhaust Hose
Backward piping • Directly backward piping by using
the existing hole in the wall
Target Fresh air in exhaust
Thickness
hose = hose on the rear of +
of the wall
length 85mm
Fresh air in exhaust hose
on the rear of 85mm
Thickness above
+
of the wall 230mm
Horizontally rear-out piping
Target Distance from the fresh air in
hose = exhaust end connection to +
within
length the hole in the wall.
0.5m
Distance from the fresh air in exhaust
end connection to the hole in the wall
within
0.6m
Thickness
+
of the wall
The fresh air in exhaust hose can be extended up to 1.2m by connecting the supplied fresh air in exhaust hose (A) and fresh air in
exhaust hose (B) with the reducing adapter. When extending by connecting hoses of the same diameter, an additional optional
fresh air in exhaust hose is necessary.
When extending the hose, cut off the cuff on
the fresh air in exhaust hose to be connected
Fresh air
in exhaust
Cuff
hose (B)
For the hole
in the wall of
65mm or more
When desiring to extend the fresh air in exhaust hose more than 1.2m, an additional optional fresh air in exhaust hose needs to
be used. For connecting method, refer to the instructions supplied with the optional part.
( )
Please shorten the length of the hose as much as possible to prevent the degradation of the fresh air in, exhaust operating
performance.
( )
3 Connecting the Fresh Air in Exhaust Hose
Backward piping • Vertically down from right • Horizontally piping from right
( )
(1) Cut the hose insulation which is to be wrapped around the elbow for right piping along the perforation. Cover the elbow with
the insulation and secure them with vinyl tape.
(2) Cut the hose insulation along the perforation. Cut it off according to the hose length.
( )
(Insulation length: 200mm for directly backward piping / 180mm for vertically down from right and horizontally piping from
right + distance from the indoor unit to the hole in the wall)
Hose insulation Perforation
Cutting dimension
Insulation for right piping elbow
(3)
Securely connect the elbow for right piping, fresh air in exhaust hose (A) and fresh air in exhaust hose (B) to the air duct for
rear horizontal piping. Then, wrap the insulation which has been cut according to the above (2) around the fresh air in
exhaust hoses.
Cover the parts of the fresh air in exhaust hose which passes through the room with insulation sheet for hoses and wrap with
tape to ensure there are no spaces.
When horizontally piping is carried out for fresh air in exhaust hose, the split line of the hose insulation must come to the top.
Elbow for
Directly backward piping, vertically down from right and horizontally piping from right can be arranged by turning the fresh air in
right piping
exhaust hose by 90 degrees.
• The Outdoor unit must be mounted at a location which
can support heavy weight. Otherwise, noise and
vibration will increase.
• Do not expose the unit under direct sunshine or rain.
Besides, ventilation 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 and front
are specified in figure below. At least two 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 flammable
gas, steam, oil and smoke.
• The location must be convenient for water drainage.
• Place the Outdoor unit and its connecting cord at least
1 m away from the antenna or signal line of television,
radio or telephone. This is to avoid noise interference.
Figure showing the Installation of Indoor and Outdoor Unit.
Item Qty
CAUTION
Insulation Sheet
1
for Hose
In case the pipe length is more than 8m, add refrigerant R22 at 20
gram per every meter exceeds. However, pipe length shall not
Anti-Insect
exceed 15m.
Net 1
Be sure
The Length of Indoor
Anti-Insect
to com-
Unit Power Cord
1
Net Adapter
p l e t e l y
seal any
about
Hood 0.9m about 1.6m gap with
1
putty.
• Do not alter the power cord.
Elbow for
Right Piping 1
Direction of Piping
Horizontally
perpendicular
Reducing
to the unit
1
Adaptor
n
T h e r e a r e 4 d i r e c t i o n s
Horizontally
allowed, namely, horizontally
Rear-Out Air Duct
perpendicular to the unit,
1
(ø29 x 640)
vertically down from right,
horizontally out from right and
horizontally out to left. Don't
form the piping downward at
Fresh Air In Exhaust
the left of the unit.
Hose (A)
1
(ø25 x 645)
Fresh Air In Exhaust
Hose (B)
1
(ø20 x 645)
are accesories provided
Dimension of Mounting
Stand of the Outdoor Unit
(unit : mm)
Cut away shaded
Mounting stand
por tion, and
finish the edge of
the opening so
that there is no
burr.
20
Vertically down from right • Horizontally piping from right
Target Fresh air in
= +
hose exhaust hose on
above
+
length
230mm the rear of 180mm
Distance from the
Thickness
indoor unit to the +
of the wall
hole in the wall
Vertically down from left • Horizontally piping from left
Thickness above Target
+ Distance from the
of the wall 230mm hose
= indoor unit to the +
length
hole in the wall
Distance from the
indoor unit to the
above
hole in the wall
230mm
Secure the fresh air in exhaust
Fresh air in
exhaust hose (B) hose to the reducing adapter by
wrapping vinyl tape around them
Reducing
adapter
Fresh air in
Cut
exhaust hose (A)
Vinyl tape
Position
Connecting port side of the air duct for rear horizontal piping
Alignment line
The side of fresh air in exhaust end
connection
Larger Elbow for right piping
dimension
Align the end face to the elbow line,
Smaller
wrap and secure with vinyl tape
dimension
WARNING
CAUTION
2,300mm or more
The difference in height
between the indoor and
outdoor unit should be
kept below 10m.
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.
Please use insulated
drain hose for the indoor
piping (commercial
product).
12
550 187
Distance from the
Thickness above
+ +
indoor unit to the
of the wall 230mm
hole in the wall
Fresh air in exhaust hose
above on the rear of 180mm
+
230mm
Thickness above
+
of the wall 230mm
Thickness above
+ +
of the wall 230mm
Secure with
vinyl tape