Ecoair ECO903S User manual

Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
Before using your air conditioner, please read
this manual carefully and keep it for future reference.
R410A SPLIT SERIES
FIXED SPEED
Models
ECO903S
ECO1202S
ECO1802S
ECO2402S
ECO2802S

BS PLUG WIRING
(For models up to 12000 Btu)
Wiring Instructions: Should it be necessary to change the plug please
note the wires in the mains lead are coloured in accordance with the
following code :
BLUE - NEUTRAL
BROWN LIVE
GREEN AND YELLOW - EARTH
As the colours of the wires in the mains lead of this appliance may not
correspond with the coloured markings identifying the terminals in your
plug, proceed as follows:
The BLUE wire is the NEUTRAL and must be connected to the terminal
which is marked with the letter Nor coloured BLACK.
The BROWN wire is the LIVE and must be connected to the terminal
which is marked with the letter Lor coloured RED.
The GREEN/YELLOW is the EARTH and must be connected to the
terminal which is marked with the letter Eor or coloured GREEN OR
GREEN/YELLOW.
Always ensure that the cord grip is positioned and fastened correctly.
If a 13A (BS 1363) fused plug is used it must be fitted with a 13A fuse.
If in doubt consult a qualified electrician.
Wiring for a 13 Amp Plug (BS1363)
Please note. The Earth Terminal is marked with the letter Eor Earth
Symbol.
BS Plug Wiring

CONTENTS
SAFETY PRECAUTIONS...................................................................2
INSTALLATION OF INDOOR AND OUTDOOR UNITS.......................3
INSTALLATION INSTRUCTIONS......................................................5
ELECTRICAL WORK ........................................................................9
AIR PURGING ..................................................................................
TEST RUNNING...............................................................................
1
Contents
11
14
!
WARNING
Do not install, remove and reinstall the unit by yourself.
Improper installation will cause water leakage, electrical shock,
or fire. Please consult authorized dealer or specialist for the
installation work. Please note fault caused by improper
installation is not covered by warranty.
Unit must be installed in an easily accessible area. Any
additional cost required to hire a special equipment to
service the unit will be the responsibility of the customer.

2
Safety precautions
!
WARNING
Do not install it yourself.
Install the unit securely in a place which
can bear the weight of the unit.
Use the specified wires to connect the
indoor and outdoor units securely and
attach the wires firmly to the terminal
board connecting sections so the stress
of the wires is not applied to the sections
Incorrect installation could cause injury due to fire,
electric shock, the unit falling or leakage of water.
Consult the dealer from whom you purchased the
unit or special installer
When installed in an insufficiently strong place,
the unit could fall causing injury.
Incorrect connection and fixing could cause a fire.
If the capacity of the power circuit is insufficient
or there is incomplete electrical work, it could
result in a fire or an electric shock.
The use of defective parts could cause an injury
due to a fire, electric shock, the unit falling, etc.
Incorrect installation could cause a personnel
injury due to fire, electric shock, the unit falling
or leakage of water.
If the electrical part covers of the indoor unit
and/or the service panel of the outdoor unit
are not attached securely, it could result in a
fire or electrical shock due to dust, water, etc.
Perform electrical work according to the
installation manual and be sure to use an
exclusive circuit.
Be sure to use the part provided or
specified parts for the installation work.
Perform the installation securely referring
to the installation instruction.
Check that the refrigerant gas does not
leak after installation is completed.
Attach the electrical part cover to the indoor unit and
the service panel to the outdoor unit securely.
Be sure to read the following WARNING before installing the air
conditioner.
Be sure to observe the cautions specified here as they include
important items related to safety.
After reading this instructions, be sure to keep it together with the
owners manual in a handy place for future reference.
SAFETY PRECAUTIONS
The following should be always observed for safety:
!
CAUTIONS
Do not install the unit in a place where
a flammable gas leaks.
If gas leaks and accumulates in the area
surrounding the unit, it could cause a
explosion.
If there is a defect in the drainage/piping work,
water could leak from the unit and household
goods could get wet and be damaged.
Perform the drainage/piping work according to the
installation instruction.

3
Installation Instruction
INSTALLATION OF INDOOR AND OUTDOOR UNITS
Read completely, then follow step by step.
Indoor unit
Do not expose the indoor unit to heat or steam.
Select a place where there are no obstacles
in front or around the unit.
Make sure that condensation drainage can
be conveniently routed away.
Do not install near a doorway.
Ensure that the space on the left and right
of the unit is more than 12cm.
Use a stud finder to locate studs to prevent unnecessary damage to the wall.
A minimum pipe run of 3 metres is required to minimise vibration & excessive noise.
The indoor unit should be installed on the wall at a height of 2.3 metres or more
from the floor .
The indoor unit should be installed allowing a minimum clearance of 15cm from
the ceiling.
Any variations in pipe length will/may require adjustment to refrigerant charge.
There should not be any direct sunlight. Otherwise, the sun will fade the plastic
cabinet and affect its appearance. If unavoidable, sunlight prevention should
be taken into consideration.
Outdoor unit
If an awning is built over the outdoor unit to
prevent direct sunlight or rain exposure,
make sure that heat radiation from the
condenser is not restricted.
Ensure that the clearance around the back
of the unit is more than 60cm and left side is
more than 30cm. The front of the unit should
have more than 200cm of clearance and the
connection side (right side) should have more
than 60cm of clearance.
Do not place animals and plants in the path of the air inlet or outlet.
Take the air conditioner weight into account and select a place where noise
and vibration will not be an issue.
Select a place so that the warm air and noise from the air conditioner do not
disturb neighbors.
If the outdoor unit is installed on a roof structure, be sure to level the unit.
Ensure the roof structure and anchoring method are adequate for the unit
location.
Consult local codes regarding rooftop mounting.
If the outdoor unit is installed on roof structures or external walls, this may
result in excessive noise and vibration, and may also be classed as a non
serviceable installation.
More than 60cm
More than 60cm
More than 30cm
More than 200cm
Rooftop installation:
2.3m or more
More than 15cm
More than 12cm
More than 12cm
Fig.1

Note: Except the above parts provided, the other parts needed during
installation you must purchase.
Mounting screw B
ST3.9x10-C-H
Remote controller
holder
This illustration is for explanation purposes only.
Copper lines must be insulated independently
4
Installation Instruction
Items packed with the unit
Loop the
connective
cable.
Fig.3
8
9
Remote Controller
7
Ensure that the space around the left and
right of the indoor unit is more than 12cm.
The indoor unit should be installed allowing
a minimum clearance of 15cm from the
ceiling.
Use a stud finder to locate studs to prevent
unnecessary damage to the wall.
A minimum pipe run of 3 metres is required
to minimise vibration & excessive noise.
The indoor unit should be installed on the
wall at a height of 2.3 metres or more from
the floor .
Two of the A, B and C directions should be
free from obstructions.
CAUTION
C
B
A
60cm above
60cm above
30cm above
200cm above
6
2
3
1
12cm above
12cm above
Air Filter
15cm above
Air Outlet
30cm above
AUTO
COOL
DRY
FAN
HIGH
MED
LOW
TEMP
MODE ON/OFF FAN
SWING ECONOMY TIMER
RESET LOCK
R
CANCEL
DIGITALDISPLAY
HEAT
1
2
3
4
5
6
7
1
1
1
8
8
1
Parts you
must
purchase
6.35
9.53
12.7
82
Self-tapping Screw B ST3.9X10
Remote controller
Installation Plate
Name of Accessories
Self-tapping Screw A ST3.9X25
Seal
Drain Joint
Connecting
pipe
Assembly
Liquid side
Clip Anchor
Number Q ty
Gas side
9Remote controller holder 1
( 24000Btu/h model)
(12000Btu/h model & 18000Btu/h model)
( 12000Btu/h model)
( 18000Btu/h model)
9.53
16
( 24000Btu/h model )

5
Installation Instruction
INDOOR UNIT INSTALLATION
1.
2. Drill a hole in the wall
Fig.4
Fig.5
Note:
Fit the Installation Plate
1. Fit the installation plate horizontally
on structural parts of the wall with
spaces around the installation plate.
2. If the wall is made of brick, concrete or
the like, drill eight (8) 5mm diameter holes
in the wall. Insert Clip anchor for appropriate
mounting screws.
3. Fit the installation plate on the wall with eight
(8) type “A” screws.
Correct orientation
of Installation Plate
Fit the Installation Plate and drill holes in the wall according to the wall structure
and corresponding mounting points on the installation plate.
(Dimensions are in “mm” unless otherwise stated)
Wall
Indoor Outdoor
5-7mm
Fig.6
INSTALLATION INSTRUCTIONS
A
40
B
Right rear side
refrigerant
pipe hole 65
Installation plate
Indoor unit outline
Left rear side
refrigerant
pipe hole 65
150mm or more to ceiling
120mm or more
to wall
120mm or more
to wall
<12000Btu/h model: (A: 750, B: 250)
12000Btu/h and 18000Btu/h model: (A: 815, B:280)
90
40
45
Above 150 from the ceiling
Indoor Unit Outline
Above 120mm
from the wall
432
Hooked Part
432
1080
Above 120mm
from the wall
330
108
130
95
95
130
50
50
22
1. Determine hole positions according to
the diagram detailed in Fig.5. Drill
one (1) hole ( 65mm for models up to
18000btu, 95mm for models above
24000btu) slanting slightly to outdoor side.
2. Always use wall hole conduit when
drilling metal grid, metal plate or the like.
>24000Btu/h model

6
Installation Instruction
1. For the left-hand and right-hand piping, remove the pipe cover from the side panel.
Explain to clients that the pipe cover must be kept as it may be used when relocate the
air conditioner to any other place.
2. For the rear-right-hand and rear-left-hand piping, install the piping as shown. Bend the
connective pipe to be laid at 43mm height or less from the wall.
3. Fix the end of the connective pipe. (Refer to Tightening Connection in REFRIGERANT
PIPING CONNECTION)
Connective pipe
Indoor unit outline
Connective pipe
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43
1. Pass the piping through the hole in the wall.
2. Put the upper claw at the back of the indoor unit on
the upper hook of the installation plate, move the
indoor unit from side to side to see that it is securely
hooked.
3. Piping can easily be made by lifting the indoor unit
with a cushioning material between the indoor unit
and the wall. Get it out after finish piping.
4. Push the lower part of the indoor unit up on the wall,
Then move the indoor unit from side to side, up and
down to check if it is hooked securely.
Fig.9
4. Indoor unit installation
Fig.7
Fig.8
3. Connective Pipe and Drainage Installation
1. Run the drain hose sloping downward. Do not install the drain hose as illustrated
below.
2. When connecting extension drain hose, insulate the connecting part of extension
drain hose with a shield pipe, do not let the drain hose slack.
Drainage
Fig.6
Do not block water flow by a rise. Do not put the end of
drain hose into water.
Pipe holder
Pipe Cover
(right)
Pipe Cover (left)
Right piping
Left piping
Right back piping
Left back piping
Upper Hook
Lower Hook
Cushioning
material

7
Installation Instruction
5. Piping and wrapping
Bundle the tubing, connecting cable, and
drain hose with tape securely,
evenly as shown in Fig.10.
Because the condensed water from rear
of the indoor unit is gathered in ponding
box and is piped out of room. Do not put
anything else in the box.
Indoor unit
Connective
pipe
Pipe room
Ponding box
Wrapping belt
Connective
cable
Drain hose
Fig.10
Connect the indoor unit first, then the outdoor unit.
Do not allow the piping to let out from the back of the indoor unit.
Be careful not to let the drain hose slack.
Heat insulated both of the auxiliary piping.
Be sure that the drain hose is located at the lowest side of the bundle. Locating
at the upper side can cause drain pan to overflow inside the unit.
Never intercross nor intertwist the power wire with any other wiring.
Run the drain hose sloped downward to drain out the condensed water smoothly.
CAUTION
Install the outdoor unit on a rigid base to prevent increasing noise level and vibration.
Determine the air outlet direction where the discharged air is not blocked.
In the case that the installation place is exposed to strong wind such as a seaside,
make sure the fan operating properly by putting the unit lengthwise along the wall
or using a dust or shield plates.
Specially in windy area, install the unit to prevent the admission of wind.
If need suspending installation, the installation bracket should accord with technique
requirement in the installation bracket diagram. The installation wall should be solid
brick, concrete or the same intensity construction,
or actions to reinforce, damping supporting should
be taken. The connection between bracket and
wall, bracket and the air conditioner should be
firm, stable and reliable.
Be sure there is no obstacle which block
radiating air.
OUTDOOR UNIT INSTALLATION
Outdoor installation precaution
Strong
wind
Fig.11

8
Installation Instruction
Settlement of outdoor unit
Anchor the outdoor unit with a bolt and
nut 10 or 8 tightly and horizontally
on a concrete or rigid mount.
Fit the seal into the drain elbow, then insert
the drain joint into the base pan hole of
outdoor unit, rotate 90 to securely assemble
them. Connecting the drain joint with an
extension drain hose (Locally purchased),
in case of the water draining off the outdoor unit
during the heating mode.
Drain joint installation
Seal
Drain joint
Base pan hole of
outdoor unit
Seal
Drain pipe
Fig.13
REFRIGERANT PIPING CONNECTION
Oblique
90 Roughness
Burr
Main cause for refrigerant leakage
is due to defect in the flaring work.
Carry out correct flaring work
using the following procedure:
A: Cut the pipes and the cable.
1. Use the piping kit accessory or pipes
purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than the measured distance.
4. Cut the cable 1.5m longer than the pipe length.
1. Flaring work
Fig.14
A
B
Air inlet
Air outlet
Air inlet
Fig.12
B: Burr removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.
Pipe
Reamer
Point down
Fig.15
Outdoor unit dimension
mm(WxHxD)
A(mm)
458
460
B(mm)
250
276
530 290
560 335
549 276
Mounting dimensions
700x535x235
685x430x260
780x540x250
760x590x285
845x695x335
590 333
895x860x330

Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
C: Putting nut on
Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.(not possible
to put them on after flaring work)
Flare nut
Copper tube
Fig.16
Fig.17
D: Flaring work
Firmly hold copper pipe in a die in the
dimension shown in the table below.
CAUTION
Align the center of the pipes..
Sufficiently tighten the flare
nut with fingers, and then tighten
it with a spanner and torque wrench
as shown.
Tightening Connection
Excessive torque can break nut
depending on installation conditions.
Outer
diam. Tightening torque(N.cm) Additional tightening
torque(N.cm)
6.35 1570
(160kgf.cm) 1960 (200kgf.cm)
4900
(500kgf.cm)
5390
(550kgf.cm)
12.7
9.53
2940
(300kgf.cm)
3430
(350kgf.cm)
Fig.19
Indoor unit tubing Flare nut Pipings
Fig.18
ELECTRICAL WORK
Electric safety regulations for the initial Installation
1. If there is serious safety problem about the power supply, the technicians should refuse
to install the air conditioner and explain to the client until the problem is solved.
2. Power voltage should be in the range of 90%~110%of rated voltage.
3. The creepage protector and main power switch with a 1.5 times capacity of Max. Current
of the unit should be installed in power circuit.
4. Ensure the air conditioner is grounded well.
7. An individual branch circuit and single receptacle used only for this air conditioner must be
available. See the following table for suggested wire sizes and fuse specifications:
5. According to the attached Electrical Connection Diagram located on the panel of the outdoor
unit to connect the wire.
6. All wiring must comply with local and national electrical codes and be installed
by qualified and skilled electricians.
9
Electrical work
Outer diam.
(mm)
A(mm)
Max. Min.
6.35 1.3 0.7
9.53
1.6 1.0
12.7
1.8 1.0
12.7
1.8 1.0
16
2.4
2.2
7360
(750kgf.cm)
7850
(800kgf.cm)
16

Connect the cable to the indoor unit
1. Indoor/Outdoor connection cable should be H07RN-F type.
2. Remove the panel and Screw, then remove the electrical control box cover.
3. Connect cables according to their marks to terminals.
4. Wrap those cables not connected with terminals with insulation tapes, so
that they will not touch any electrical components.
Connect the cable to the outdoor unit
1. Remove the electric parts cover from the outdoor unit.
2. Connect the connective cables to the terminals as identified with their respective
matched numbers on the terminal block of indoor and outdoor units.
3. To prevent the ingress of water, from a loop of the connective cable as illustrated
in the installation diagram of indoor and outdoor units.
4. Insulate unused cords (conductors) with PVC-tape.Process them so they do not
touch any electrical or metal parts.
Cover
Screw
10
Electrical work
Fig.20
Fig.21
Electrical control
box cover
Panel
10mm
10mm
40mm
40mm
Cooling only
type.
Cooling & heating
type.
Code wire
Or
10mm
40mm
Cooling & heating
type.
Terminal block of indoor unit
To outdoor unit
1 2(N) 3 4
Or
1 2(N) 3 4
To outdoor unit
NOTE: The supply voltage can not be less than the rate voltage of the air conditioner.
Minimum norminal cross-sectional
area of conductors:
Rated current
of appliance
(A)
>3 and <6
>6 and <10
>10 and <16
>16 and <25
Nominal cross-sectional
area
2
(mm )
0.75
1
1.5
2.5
NOTE: The wiring connection may be slightly different for the different terminal block supplied. Performing the
connection according to the terminal block as the following:
Terminal block of outdoor unit
4
1
13
2(N) 2( N)
Or
41 3
2(N)
Cooling & heating type
Cooling only type
Cord clamper
1
134
2(N) 2(N)
41 3
2(N)
Or
(1)
(2)
Cord clamper
To outdoor unit
Cord clamp
1 2(N) 3 4 1 2(N)
Or
To outdoor unit
Cord clamp
Model Power supply Input Rated Amp
(Switch/Fuse)
13A
20A
220-240V~ 50Hz
12000Btu/h
18000Btu/h
32A
>18000Btu/h
Electrical work (For models up to 18000Btu)

Connect the cable to the indoor unit
Connect the cable to the outdoor unit
Cover
Screw
11
Electrical work
Fig.21
NOTE: The supply voltage must be consistent with the rate voltage of the air conditioner.
Fig.20
Panel
Electrical box
cover
10mm
40mm
Terminal block of indoor unit
To outdoor unit
Wire connector of outdoor unit
To indoor unit Power supply
1. The inside and outside connecting cable can be connected without removing the front grille.
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene
sheathed flexible cord, type designation H07RN-F or heavier cord.
3. Lift the indoor unit panel up, remove the electrical box cover by loosening the screw.
4. Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoors
respectively.
5. Wrap those cables not connected with terminals with insulation tapes, so that they will not
touch any electrical components. Secure the cable onto the control board with the cord clamp.
1. Remove the electrical control board cover from the outdoor unit by loosening the screw.
2. Connect the connective cables to the terminals as identified with their respective matched
numbers on the terminal block of indoor and outdoor units. The connective cable to power
supply shall be approved polychloroprene sheathed flexible cord, type designation
245 IEC 57(H07RN-F) or heavier cord.
3. Secure the cable onto the control board with the cord clamp.
4. To prevent the ingress of water, from a loop of the connective cable as illustrated
in the installation diagram of indoor and outdoor units.
5. Insulate unused cords (conductors) with PVC-tape.Process them so they do not
touch any electrical or metal parts.
To indoor unit Power supply
1 2(N) S N L
Wire connector of outdoor unit
or
Power supply
Input Rated Amp
(Switch/Fuse)
32A
220-240V~ 50Hz
or
220-230V~60Hz
Minimum norminal cross-sectional
area of conductors:
Rated current
of appliance
(A)
>3 and <6
>6 and <10
>10 and <16
>16 and <25
Nominal cross-sectional
area
2
(mm )
0.75
1
1.5
2.5
Electrical work (For models above 24000Btu)

12
Air purging
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power circuit specifically for the air conditioner. As for
the method of wiring, be guided by the circuit diagram posted on the inside of control
cover.
2) The screw which fasten the wiring in the casing of electrical fittings are liable to come
loose from vibrations to which the unit is subjected during the course of
transportation. Check them and make sure that they are all tightly fastened. (If they
are loose, it could cause burn-out of the wires.)
3) Specification of power source.
4) Confirm that electrical capacity is sufficient.
5) See to that the starting voltage is maintained at more than 90 percent of the rated
voltage marked on the name plate.
6) Confirm that the cable thickness is as specified in the power source specification.
7) Always install an earth leakage circuit breaker in a wet or moist area.
8) The following would be caused by voltage drop.

Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the
normal function of the overload.
9) The means for disconnection from a power supply shall be incorporated in the fixed
wiring and have an air gap contact separation of at least 3mm in each active(phase)
conductors.
CAUTION
CAUTION
CAUTION
CAUTION
AIR PURGING
Air and moisture in the refrigerant system have undesirable effects as indicated below:
Pressure in the system rises.
Operating current rises.
Cooling or heating efficiency drops.
Moisture in the refrigerant circuit may freeze and block capillary tubing.
Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor unit and tubing between the indoor and outdoor unit must be
leak tested and evacuated to remove any noncondensables and moisture from the
system.
Air purging with vacuum pump
Preparation
Check that each tube(both liquid and gas side tubes) between the indoor and
outdoor units have been properly connected and all wiring for the test run has
been completed. Remove the service valve caps from both the gas and the liquid
side on the outdoor unit. Note that both the liquid and the gas side service valves
on the outdoor unit are kept closed at this stage.
Pipe length and refrigerant amount:
Connective
pipe length
Less than 5m
Up to 18000Btu
5 ~ 10m
Liquid side: 6.35
(Pipe length-5)x30g
Air purging
method
Use vacuum
pump.
Use vacuum
pump.
Additional amount of refrigerant to be charged
24000Btu and above
5 ~ 10m
Liquid side: 9.53
(Pipe length-5)x40g
Use vacuum
pump.

13
Air purging
When relocate the unit to another place, perform evacuation using vacuum pump.
Make sure the refrigerant added into the air conditioner is liquid form in any case.
Open the valve stem until it hits against the stopper. Do not try to open it further.
Securely tighten the valve stem cap with aspanner or the like.
Valve stem cap tightening torque (See Tightening torque table in previous page ).
Outdoor
unit
Indoor
unit
Refrigerant
Flare nut
Stopper
Cap
Valve body
Packed valve Half union
Gas side
Liquid side
AC
D
B
Valve stem
Fig.22 Fig.23
When Using the Vacuum Pump
(For method of using a manifold valve, refer to its operation manual.)
1. Completely tighten the flare nuts, A, B, C, D, connect the manifold valve charge
hose to a charge port of the low-pressure valve on the gas pipe side.
2. Connect the charge hose connection to the vacuum pump.
3. Fully open the handle Lo of the manifold valve.
4. Operate the vacuum pump to evacuate. After starting evacuation, slightly loose the
flare nut of the Lo valve on the gas pipe side and check that the air is entering
(Operation noise of the vacuum pump changes and a compound meter indicates
0 instead of minus)
5. After the evacuation is complete, fully close the
handle Lo of the manifold valve and stop the
operation of the vacuum pump.
Make evacuation for 15 minutes or more and
check that the compound meter indicates
-76cmHg (-1x10 Pa).
o
6. Turn the stem of the packed valve B about 45
counterclockwise for 6~7 seconds after the gas
coming out, then tighten the flare nut again. Make
sure the pressure display in the pressure indicator
is a little higher than the atmosphere pressure.
7. Remove the charge hose from the Low pressure charge hose.
8. Fully open the packed valve stems B and A.
9. Securely tighten the cap of the packed valve.
Manifold valve
Compound meter
-76cmHg
Handle Lo Handle Hi
Charge hose Charge hose
Vacuum pump
Pressure gauge
Low pressure valve
Fig.24
Caution in handling the packed valve
5

14
Test running
Perform the electric safe check after completing installation:
1. Insulated resistance
The insulated resistance must be more than 2M .
2. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and
grounding resistance tester. Make sure the grounding resistance is less than 4 .
3. Electrical leakage check (performing during test running)
During test operation after finishing installation, the serviceman can use the electroprobe
and multimeter to perform the electrical leakage check. Turn off the unit immediately if
leakage happens. Check and find out the solution ways till the unit operate properly.
A: Lo packed valve B: Hi packed valve
C and D are ends of indoor unit connection.
CAUTION
Indoor unit
check point
D
B
C
A
Outdoor unit
check point
Cover
Fig.25
Electrical safety check
Gas leak check
1. Soap water method:
Apply a soap water or a liquid neutral detergent
on the indoor unit connection or outdoor unit
connections by a soft brush to check for leakage
of the connecting points of th piping. If bubbles
come out, the pipes have leakage.
2. Leak detector
Use the leak detector to check for leakage.
ELECTRICAL SAFETY AND GAS LEAK CHECK
TEST RUNNING
Manual control
Button
AUTO/COOL
Perform test running after completing gas leak and electrical safety check.
The test running time should last more than 30 minutes.
1. Open the panel and lift the panel up to an angle which remains fixed. Do not lift the
panel any further when it stops with a click sound.
2. Press the manual control button twice until the operating indicator lights up, the unit
will operate on Forced Cool mode.
3. Check if all the functions works well during test running. Especially check whether
the drainage of indoor unit is smooth or not.
4. Press the manual switch button again after finishing the test running . The operating
indicator turns dark and the unit stops operating.

MEMO
Date of installation:
Purchased from (Dealer Name):
Date of purchase:
Model number:
Serial number:

Copyright Reserved
ONE (1)YEAR LIMITED WARRANTY
Save This Warranty Information
EcoAir guarantees this product free from defects in materials and workmanship
for a period of one (1) year from the date of purchase, limited to parts only.
Faults arising from a faulty installation is specifically excluded.
This unit must be operated under conditions as recommended, at voltages
indicated on the unit. Any attempts made to service or modify the unit by
unqualified technician, will render this WARRANTY VOID. The actual product
may differ slightly from the illustration. This warranty is in addition to, and does
not affect, your statutory rights.
For further information, please contact 020 8459 2458.