INVENTOR V4MDI-12B, U4MRS-12B Installation Manual
• INSTALLATION MANUAL
• ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ
• MANUAL DE INSTALARE
DUCT TYPE
AIR CONDITIONING SYSTEMS
ENGLISH | ΕΛΛΗΝΙΚΑ | ROMANA
MODELS:
V4MDI-12B
U4MRS-12B
Page 2
Table of Contents
Installation Manual
Accessories .................................................... 04
a. Indoor Unit Parts ........................................ 08
b. Indoor Unit Installation Instructions ....... 09
Safety Precautions ..................................... 05
Outdoor Unit Installation ......................... 12
a. Outdoor Unit Installation Instructions ...... 13
b. Outdoor Unit Types and Specifications .... 14
c. Notes on Drilling Hole in Wall .................... 14
Drain pipe Installation ............................... 15
Indoor Unit Installation
........................... 07
Installation Overview ............................... 07
1
2
5
3
4
6
Page 3
Page 3
Refrigerant Piping Connection 81.......................
A. Notes on Pipe Length and Elevation .............. 18
B. Refrigerant Piping Connection Instructions ...20
Wiring ................................................. 20
a. Outdoor Uni W iring .................. 22
b. Indoor Uni W iring ..................... 23
c. Power Specificatio ................... 25
Air Evacuation 72..................................................
a. Evacuation Instructio ................................ 27
b. Note on Adding Refrigera ....................... 28
Test Run ............................................. 29
MC MC
7
8
9
10
L N
Page 4
Accessories
1
The air conditioning system comes with the following accessories. Use all of the installation parts
and accessories to install the air conditioner. Improper installation may result in water leakage,
electrical shock and fire, or equipment failure.
There are two types of remote controls: wired and wireless.
Select a remote controller based on customer preferences and requirements and install in an
appropriate place.
Refer to catalogues and technical literature for guidance on selecting a suitable remote controller.
•
Connecting wire for display (2m)
Cord protection rubber ring
QUANTITY
SHAPENAME
Soundproof / insulation sheath
2
1
1
1
Tubing & Fittings
Others
Installation manual
Transfer connector(Φ12.7-Φ15.9)/
Φ0.5in-Φ0.63in
( )(Packed with the indoor unit )
NOTE: Pipe size may dier from appliance to
appliance. To meet dierent pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit .
Transfer connector(Φ6.35-Φ9.52)/
Φ0.25in-Φ0.375in
( )(Packed with the indoor unit)
NOTE: Pipe size may dier from appliance to
appliance. To meet dierent pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit .
Transfer connector(Φ9.52-Φ12.7)/
Φ0.375in-Φ0.5in
( ) (Packed with the indoor unit,
used for multi-type models only )
NOTE: Pipe size may dier from appliance to
appliance. To meet dierent pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit .
1
Owner‘s manual
Drain joint (some models)
Seal ring (some models)
Drainpipe Fittings
(for cooling & heating)
Seal sponge (some models)
EMC Magnetic Ring
(some models)
Magnetic ring
(wrap the electric wires S1 & S2 ( P & Q & E )
around the magnetic ring twice)
Magnetic ring
(Hitch on the connective cable between the indoor
unit and outdoor unit after installation.)
1
1
Orice (some models)
1
1
(on some models)
1
(on some models)
1
(on some models)
1(on some models)
1(on some models)
1
S1&S2(P&Q&E)
Display panel
*Just for testing purposes only
1(on some modelsKJR-120G,KJR-120H)
Page 5
Safety Precautions
2
Read Safety Precautions Before Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
Failure to observe a warning may result in death. The appliance must be installed in
accordance with national regulations.
Failure to observe a caution may result in injury or equipment damage.
WARNING
CAUTION
WARNING
• Carefully read the Safety Precautions before installation.
• In certain functional environments, such as kitchens, server rooms, etc., the use of specially
designed air-conditioning units is highly recommended.
• Only trained and certified technicians should install, repair and service this air
conditioning unit.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to
the equipment and personal property.
• Strictly follow the installation instructions set forth in this manual.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to
the equipment.
• Before you install the unit, consider strong winds, typhoons and earthquakes that might aect
your unit and locate it accordingly. Failure to do so could cause the equipment to fail.
• After installation, ensure there are no refrigerant leaks and that the unit is operating properly.
Refrigerant is both toxic and flammable and poses a serious health and safety risk.
Note about Fluorinated Gases
1.
This air-conditioning unit contains fluorinated gases. For specific information on the type of gas
and the amount, please refer to the relevant label on the unit itself.
2.
Installation, service, maintenance and repair of this unit must be performed by a certified
technician.
Product uninstallation and recycling must be performed by a certified technician.3.
If the system has a leak-detection system installed, it must be checked for leaks at least every 12
months.
5.
4.
When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
Page 6
Installation Overview
3
LN
1
2
3
4
5
MC MC
6
7
Install the indoor unit
(Page 8)
INSTALLATION ORDER
Install the outdoor unit
(Page 13)
Install the drainpipe
(Page 15)
Evacuate the refrigeration system
(Page 28)
Connect the wires
(Page 23)
Connect the refrigerant pipes
(Page 18
Perform a test run
(Page 30)
Page 7
Indoor Unit Installation
4
Indoor Unit Parts
Fig. 4.1
WARNING
• Securely install the indoor unit on a structure
that can sustain its weight. If the structure is
too weak, the unit may fall causing personal
injury, unit and property damage or death.
• DO NOT install the indoor unit in the
bathroom or laundry room as excessive
moisture can short the unit and corrode the
wiring.
CAUTION
• Install the indoor and outdoor units, cables
and wires at least 1m (3.2’) from televisions
or radios to prevent static or image
distortion. Depending on the appliances, a
1m (3.2’) distance may not be sufficient.
• If the indoor unit is installed on a metal
part of the building, it must be electrically
grounded.
Indoor Unit Installation Instructions
Step 1: Select installation location
The indoor unit should be installed in a location
that meets the following requirements:
o Enough room exists for installation and
maintenance.
o Enough room exists for the connecting pipe
and drainpipe.
o The ceiling is horizontal and its structure can
sustain the weight of the indoor unit.
o The air inlet and outlet are not impeded.
o The airflow can fill the entire room.
o There is no direct radiation from heaters.
CAUTION
DO NOT install the unit in the following
locations:
In areas with oil drilling or fracking
In coastal areas with high salt content in the
air
In areas with caustic gases in the air, such as
near hot springs
In areas with power fluctuations, such as
factories
In enclosed spaces, such as cabinets
In areas with strong electromagnetic waves
In areas that store flammable materials or gas
In rooms with high humidity, such as
bathrooms or laundry rooms
Air outlet
Air inlet
Air filter(on some models)
Drain hose
Electric control cabinet
Refrigerant connecting pipe
√
√
√
√
√
√
Safety Precautions
o
√
It is embeded installation.
Models with a cooling capacity of 9000Btu to
18000Btu only apply to one room.
o
√
Page 8
Air outlet
Air inlet
Step 2: Hang indoor unit.
1.
Maintenance space
Installation place
Left
side
Right
side
Strong and durable ceiling
Indoor unit
>4in(10cm) >11.8in(30cm)
>0.8in(2cm)
>0.8in(2cm)
>11.8in(30cm)
> 8.2in(250cm)
Floor
Service access Ceiling
(When no ceiling)
B
Fig. 4.2
Please refer to the following diagrams to locate the four positioning screw bolt holes on the
ceiling. Be sure to mark the paces where you will drill ceiling hook holes.
Air outlet dimensions
>
7.9
in
(20cm)
11.8in
23.6inx23.6in (60cmx60cm)
checking orifice
> (30cm)
Page 9
Fig. 4.3
Air lter
Descending ventilation opening and mounted hook
Air lter
Electric control box
Table.4-1
MODEL
(Btu/h)
Outline dimension
A B C
air outlet opening size
D E F
air return opening size
(unit: mm/inch)
Size of mounted lug
I
J
G
H
18K 210/8.3 674/26.5880/34.6
24K 249/9.8 774/30.51100/43.3
30K~36K 249/9.8 774/30.51360/53.5
36K~60K 300/11.8 874/34.41200/47.2
136/5.4 706/27.8600/23.6
175/6.9 926/36.5700/27.6
175/6.9 1186/46.7700/27.6
227/8.9 1044/41.1800/31.5
190/7.5
228/8.9
228/8.9
280/11
920/36.2782/30.8
1140/44.91001/39.4
1400/55.11261/49.6
1240/48.81101/43.3
508/20
598/23.5
598/23.5
697/27.4
9K/12K
200/7.9 506/19.9700/27.6
152/6 537/21.1450/17.7 186/7.3 741/29.2599/23.6
360/14.2
Fig. 4.6
Fig. 4.7
Original concrete bricks
Use an embedding screw bolt, crock, and stick
harness.(See Fig.4.6)
Steel Roof beam structure
Install and use the supporting steel angle.
(See Fig.4.7)
Fig. 4.4
Wood
Place the wood mounting across the roof beam,
then install the hanging screw bolts.(See Fig.4.4)
Wood mounting
Roof beam
Hanging screw bolts
Ceiling
Fig. 4.5
New concrete bricks
Inlay or embed the screw bolts. (See Fig. 4.5)
(Blade shape insertion)
(Slide insertion)
Steel bar
Embedding screw bolt
(Pipe hanging and embedding screw bolt)
Hanging screw bolt
Hanging
bolts
Supporting
steel angle
Air inlet dimensions
Page 10
Fig. 4.10
or more.
Step 3: Duct and accessories installation
NOTE: 1. Do not place the connecting duct
weight on the indoor unit.
2. When connecting the duct, use an
nonammable canvas tie-in to prevent
vibrating.
3. Insulation foam must be wrapped outside the
duct to avoid condensate. An internal duct
underlayer can be added to reduce noise,
if the end-user requires.
1. Install the lter (optional) according to the size
of the air inlet.
5. Refer to the following static pressure guidelines
when installing the indoor unit.
Change the fan motor static pressure
according to external duct static pressure.
2. Install the canvas tie-in between the body and
the duct.
3. The air inlet and air outlet duct should be far
enough apart enough to a avoid air passage
short-circuit.
4.
Connect the duct according to the following
diagram:
Canvas tie-in Canvas tie-in
Air outlet
Isolation booth
Isolation booth
checking orice
Air inlet
Air dust lter
Table.4-2
MODEL
(Btu/h)
Static Pressure
(Pa/in.wg)
0~100/0~0.4
18K
0~160/0~0.64
24K
0~160/0~0.64
30K~36K
0~160/0~0.64
42K~60K
0~50/0~0.2
9K
0~50/0~0.2
12K
Cut o the roof beam.
Strengthen the point at which the cut
was made. Consolidate the roof beam.
Fig. 4.9
Screw nut
Washer
Hanging screw bolt
Overhang part
Shockproof cushion
NOTE:
Conrm the minimum drain tilt is 1/100
CAUTION
The unit body must be completely aligned with
the hole. Ensure that the unit and the hole are
the same size before moving on.
2.
Install and t pipes and wires after you have
nished installing the main body.When
choosing where to start, determine the
direction of the pipes to be drawn out.
Especially in cases where there is a ceiling
involved, align the refrigerant pipes, drain
pipes, and indoor and outdoor lines with their
connection points before mounting the unit.
3.
Install hanging screw bolts.
4. After you select an installation location,align
the refrigerant pipes, drain pipes, as well as
indoor and outdoor wires with their
connection points before mounting the unit.
5.
Drill 4 holes 10cm (4”) deep at the ceiling
hook positions in the internal ceiling. Be sure
to hold the drill at a 90° angle to the ceiling.
6.
Secure the bolt using the washers and nuts
provided.
7.
Install the four suspension bolts.
8. Mount the indoor unit with at least two
people to lift and secure it. Insert suspension
bolts into the unit’s hanging holes. Fasten
them using the washers and nuts provided.
(See Fig. 4.8).
9. Mount the indoor unit onto the hanging
screw bolts with a block. Position the
indoor unit at using a level indicator to
prevent leaks. (See Fig. 4.9).
Fig. 4.8
Page 11
Step 4: Adjust the air inlet direction
(from rear side to under-side).
1. Take o the ventilation panel and ange.
2. Change the mounting positions of the
ventilation panel and air return ange.
Air return ange
Ventilation panel
3. When installing the lter mesh, t it into the
ange as illustrated in the following gure.
NOTE:
All the gures in this manual are for
demonstration purposes only. The air conditioner
you have purchased may be slightly dierent in
design, though similar in shape.
Step 5: Fresh air duct installation
Dimension :
Duct joint for fresh air
Ø125mm(4.92”)
Ø160mm(6.3”)
MODLE
18-60
Fig. 4.14
Step 6: Motor and drain pump maintenance
Motor maintain:
Take o the ventilated panel.
Take o the blower housing.
Take o the motor.
1.
2.
3.
(the rear ventilated panel is used as an example)
Motor
Blower housing
Ventilated panel
Pump maintainance:
Remove four screws from the drain pump.
Unplug the pump power supply and water
level switch cable.
Detach the pump.
1.
2.
3.
Pump
Fig. 4.11
Fig. 4.12
Fig. 4.13
Fig. 4.15
Fig. 4.16
Air return ange
Ventilation panel
Page 12
Outdoor Unit Installation
Outdoor Unit Installation Instructions
Step 1: Select installation location.
The outdoor unit should be installed in the
location that meets the following requirements:
o Place the outdoor unit as close to the indoor
unit as possible.
o Ensure that there is enough room for
installation and maintenance.
o The air inlet and outlet must not be
obstructed or exposed to strong wind.
o Ensure the location of the unit will not be
subject to snowdrifts, accumulation of leaves
or other seasonal debris. If possible, provide
an awning for the unit. Ensure the awning
does not obstruct airflow.
o The installation area must be dry and well
ventilated.
o There must be enough room to install the
connecting pipes and cables and to access
them for maintenance.
o The area must be free of combustible gases
and chemicals.
o The pipe length between the outdoor and
indoor unit may not exceed the maximum
allowable pipe length.
o If possible, DO NOT install the unit where it
is exposed to direct sunlight.
o If possible, make sure the unit is located far
away from your neighbors’ property so that
the noise from the unit will not disturb them.
o If the location is exposed to strong winds (for
example: near a seaside), the unit must be
placed against the wall to shelter it from the
wind. If necessary, use an awning.
(See Fig. 5.1 & 5.2)
o Install the indoor and outdoor units, cables
and wires at least 1 meter from televisions or
radios to prevent static or image distortion.
Depending on the radio waves, a 1 meter
distance may not be enough to eliminate all
interference.
Strong wind
Strong wind
Strong wind
Fig. 5.1 Fig. 5.2
Step 2: Install outdoor unit.
Fix the outdoor unit with anchor bolts (M10)
>60cm / 23.6”
Fix with bolts
CAUTION
•
Be sure to remove any obstacles that
may block air circulation.
• Make sure you refer to Length
Specifications to ensure there is
enough room for installation and
maintenance.
Fig. 5.3
5
√
√
√
√
√
√
√
√
√
√
√
√
>120cm / 47”
Air Outlet
(Wall or obstacle)
H
D
W
>30cm / 11.8”
Air inlet
Air inlet
Air inlet
Air inlet
(Wall or obstacle)
>30cm / 11.8”
>30cm / 11.8”
>30cm / 11.8”
Table 5.1: Length Specifications of Split
Type Outdoor Unit (unit: mm/inch)
Table 5.2: Length Specifications of Vertical
Discharge Outdoor Unit (unit: mm/inch)
MODEL
DIMENSIONS
W H D
18 633/25 554/21.8554/21.8
24 633/25 554/21.8554/21.8
36 759/29.8 554/21.8554/21.8
36 633/25 600/23.6600/23.6
48 759/29.8 710/28710/28
60 843/33 710/28710/28
Split Type Outdoor Unit
(Refer to Fig 5.4, 5.5, 5.6, 5.10 and Table 5.1)
Vertical Discharge Type Outdoor Unit
(Refer to Fig 5.7, 5.8, 5.9 and Table 5.2)
Fig. 5.7
Fig. 5.8
Fig. 5.9
Fig. 5.6
Fig. 5.5
A
B
D
W
H
W
H
Fig. 5.4
Outdoor Unit Dimensions
W x H x D
Mounting Dimensions
Distance A Distance B
770x555x300 (30.3x21.85x11.81) 487 (19.2) 298 (11.73)
810x558x310 (31.9x22x12.2) 549 (21.6) 325 (12.8)
845x700x320 (33.27x27.5x12.6) 560 (22) 335 (13.2)
900x860x315 (35.4x33.85x12.4) 590 (23.2) 333 (13.1)
945x810x395 (37.2x31.9x15.55) 640 (25.2) 405 (15.95)
990x965x345 (38.98x38x13.58) 624 (24.58) 366 (14.4)
946x810x420 (37.24x31.9x16.53) 673 (26.5)
403 (15.87)
946x810x410 (37.24x31.9x16.14) 673 (26.5)
403 (15.87)
952x1333x410 (37.5x52.5x16.14) 634 (24.96)
404 (15.9)
952x1333x415 (37.5x52.5x16.34) 634 (24.96)
404 (15.9)
845x702x363 (33.27x27.6x14.3)
540 (21.26)
350 (13.8)
938x1369x392 (36.93x53.9x15.43) 634 (24.96) 404 (15.9)
900x1170x350 (35.4x46x13.8) 590 (23.2) 378 (14.88)
800x554x333 (31.5x21.8x13.1) 514 (20.24) 340 (13.39)
Page 13
>120cm / 47”
Air Outlet
(Wall or obstacle)
H
D
W
>30cm / 11.8”
Air inlet
Air inlet
Air inlet
Air inlet
(Wall or obstacle)
>30cm / 11.8”
>30cm / 11.8”
>30cm / 11.8”
Table 5.1: Length Specifications of Split
Type Outdoor Unit (unit: mm/inch)
Table 5.2: Length Specifications of Vertical
Discharge Outdoor Unit (unit: mm/inch)
MODEL
DIMENSIONS
W H D
18 633/25 554/21.8554/21.8
24 633/25 554/21.8554/21.8
36 759/29.8 554/21.8554/21.8
36 633/25 600/23.6600/23.6
48 759/29.8 710/28710/28
60 843/33 710/28710/28
Split Type Outdoor Unit
(Refer to Fig 5.4, 5.5, 5.6, 5.10 and Table 5.1)
Vertical Discharge Type Outdoor Unit
(Refer to Fig 5.7, 5.8, 5.9 and Table 5.2)
Fig. 5.7
Fig. 5.8
Fig. 5.9
Fig. 5.6
Fig. 5.5
A
B
D
W
H
W
H
Fig. 5.4
Outdoor Unit Dimensions
W x H x D
Mounting Dimensions
Distance A Distance B
770x555x300 (30.3x21.85x11.81) 487 (19.2) 298 (11.73)
810x558x310 (31.9x22x12.2) 549 (21.6) 325 (12.8)
845x700x320 (33.27x27.5x12.6) 560 (22) 335 (13.2)
900x860x315 (35.4x33.85x12.4) 590 (23.2) 333 (13.1)
945x810x395 (37.2x31.9x15.55) 640 (25.2) 405 (15.95)
990x965x345 (38.98x38x13.58) 624 (24.58) 366 (14.4)
946x810x420 (37.24x31.9x16.53) 673 (26.5)
403 (15.87)
946x810x410 (37.24x31.9x16.14) 673 (26.5)
403 (15.87)
952x1333x410 (37.5x52.5x16.14) 634 (24.96)
404 (15.9)
952x1333x415 (37.5x52.5x16.34) 634 (24.96)
404 (15.9)
845x702x363 (33.27x27.6x14.3)
540 (21.26)
350 (13.8)
938x1369x392 (36.93x53.9x15.43) 634 (24.96) 404 (15.9)
900x1170x350 (35.4x46x13.8) 590 (23.2) 378 (14.88)
800x554x333 (31.5x21.8x13.1) 514 (20.24) 340 (13.39)
Page 14
NOTE: The minimum distance between the
outdoor unit and walls described in the
installation guide does not apply to airtight
rooms. Be sure to keep the unit unobstructed
in at least two of the three directions (M, N, P)
(See Fig. 5.10)
M
N
P
30 cm / 11.8” from back wall
60 cm / 23.6” on right
evoba ”6.32 / mc 06
30 cm / 11.8” on left
200 cm / 78” in front
Fig. 5.10
Fig. 5.11
NOTE: Make sure the water drains to a safe
location wher
e it will not cause water damage
or a slipping hazard.
Seal
Drain joint
(A) (B)
Base pan hole of
outdoor unit
Seal
Fig. 5.12
llaW nI eloH gnillirD nO setoN
You must drill a hole in the wall for the
refrigerant piping, and the signal cable that will
connect the indoor and outdoor units.
1. Determine the location of the wall hole
based on the location of the outdoor unit.
2. Using a 65-mm (2.5”) core drill, drill a hole
in the wall.
NOTE: When drilling the wall hole, make
sure to avoid wires, plumbing, and other
sensitive components.
3. Place the protective wall cuff in the hole.
This protects the edges of the hole and will
help seal it when you finish the installation
process.
Fig. 5.11
L
H
300 cm / 118” or more
A
60 cm / 23.6”
or more
150 cm / 59”
or more
25 cm / 9.8”
or more
25 cm / 9.8”
or more
Rows of series installation
L ≤ H
L ≤ 1/2H
L A
25 cm / 9.8” or more
1/2H < L ≤ H
30 cm / 11.8” or more
L > H
Can not be installed
Table 5.3 The relations between H, A and L
are as follows.
Drain Joint Installation
If the drain joint comes with a rubber seal
(see Fig. 5.12 - A ), do the following:
1. Fit the rubber seal on the end of the drain joint
that will connect to the outdoor unit.
2. Insert the drain joint into the hole in the base
pan of the unit.
3. Rotate the drain joint 90° until it clicks in place
facing the front of the unit.
4.
1.
2.
Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
If the drain joint doesn’t come with a rubber
seal (see Fig. 5.12 - B ), do the following:
Insert the drain joint into the hole in the base
pan of the unit. The drain joint will click in
place.
Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
Page 15
Fig. 6.3
(39-59”)
(7.9”)
<20cm
(21.7”)
<55cm
Lean over 1/50
1-1.5m1-1
Drainpipe installation for units with a pump
Ceiling
0 - 75mm
(3”)
NOTE ON DRAINPIPE INSTALLATION
•
When using an extended drainpipe, tighten
the indoor connection with an additional
protection tube. This prevents it from
pulling loose.
• The drainpipe should slope downward at a
gradient of at least 1/100 to prevent water
from flowing back into the air conditioner.
• To prevent the pipe from sagging, space
hanging wires every 1-1.5m (39-59”).
• If the outlet of the drainpipe is higher than
the body’s pump joint, use a lift pipe for
the indoor unit’s exhaust outlet. The lift
pipe must be installed no higher than
55cm (21.7”) from the ceiling board. The
distance between the unit and the lift pipe
must be less than 20cm (7.9”). Incorrect
installation could cause water to flow back
into the unit and flood.
The drainpipe is used to drain water away from
the unit. Improper installation may cause unit
and property damage.
CAUTION
•
Insulate all piping to prevent condensation,
which could lead to water damage.
•
If the drainpipe is bent or installed
incorrectly, water may leak and cause a
water-level switch malfunction.
•
In HEAT mode, the outdoor unit will
discharge water. Ensure that the drain hose
is placed in an appropriate area to avoid
water damage and slippage.
•
DO NOT pull the drainpipe forcefully. This
could disconnect it.
NOTE ON PURCHASING PIPES
This installation requires a polyethylene tube
(outside diameter = 3.7-3.9cm, inside diameter
= 3.2cm), which can be obtained at your local
hardware store or dealer.
Indoor Drainpipe Installation
Install the drainpipe as illustrated in Figure 6.2.
1.
2.
Drainpipe
connecting port
Drain hose
Pipe clasp
Insulation
Fig. 6.1
Drainpipe Installation
Fig. 6.2
6
Cover the drainpipe with heat insulation to
prevent condensation and leakage.
Attach the mouth of the drain hose to the
unit’s outlet pipe. Sheath the mouth of the
hose and clip it firmly with a pipe clasp.
(Fig 6.1)
NOTE: When connecting multiple drainpipes,
install the pipes as illustrated in Fig 6.4.
(39-59”)
1-1.5m1-1
Lean over 1/50
Ceiling
• To prevent air bubbles, keep the drain hose
level or slightly tiled up (<75mm / 3”).
0-53cm
(20.8”)
≥10cm
(4”)
Fig. 6.4
Page 16
Drainage test
Check whether the drainpipe is unhindered.
This test should be performed on newly built
houses before the ceiling is paved.
Units with a pump.
Units without a pump.
1. Remove the test cover.
Fill the water pan with 2 liters of water.
2. Turn on the unit in COOLING mode. You will
hear the drain pump.Check whether the
water is discharged properly (a 1-minute lag
is possible, depending on the length of the
drain pipe), Check whether water leaks from
the joints.
3. Turn off the air conditioner and put the cap
back on.
3. Using a 65-mm (2.5”) core drill, drill a hole in
the wall. Make sure that the hole is drilled at
a slight downward angle, so that the outdoor
end of the hole is lower than the indoor end
by about 12mm (0.5”). This will ensure proper
water drainage (See Fig. 6.5). Place the
protective wall cuff in the hole. This protects
the edges of the hole and will help seal it
once you finish installation.
Wall
Indoor
Outdoor
≈ 12mm / 0.5 inch
Fig. 6.5
NOTE: When drilling the hole, make sure to
avoid wires, plumbing, and other sensitive
components.
4.
Pass the drain hose through the wall hole.
Make sure the water drains to a safe location
where it will not cause water damage or a
slipping hazard.
NOTE: The drainpipe outlet should be at least
5cm (1.9”) above the ground. If it touches the
ground, the unit may become blocked and
malfunction. If you discharge the water directly
into a sewer, make sure that the drain has a U
or S pipe to catch odors that might otherwise
come back into the house.
Test cap
Fig.6.7
Fig.6.8
C
L
O
S
E
D
O
P
E
N
C
L
O
S
E
D
O
P
E
N
Stow tube
Fig.6.6
Stow tube
Fill the water pan with 2 liters of water.
Check that the drainpipe is unhindered.
Page 17
Refrigerant Piping Connection
Safety Precautions
WARNING
• All field piping must be completed by a
licensed technician and must comply with
the local and national regulations.
• When the air conditioner is installed in a
small room, measures must be taken to
prevent the refrigerant concentration in
the room from exceeding the safety limit
in the event of refrigerant leakage. If the
refrigerant leaks and its concentration
exceeds its proper limit, hazards due to
lack of oxygen may result.
• When installing the refrigeration system,
ensure that air, dust, moisture or foreign
substances do not enter the refrigerant
circuit. Contamination in the system may
cause poor operating capacity, high
pressure in the refrigeration cycle,
explosion or injury.
• Ventilate the area immediately if there is
refrigerant leakage during the installation.
Leaked refrigerant gas is both toxic and
flammable. Ensure there is no refrigerant
leakage after completing the installation
work.
Notes On Pipe Length and Elevation
Ensure that the length of the refrigerant pipe, the
number of bends, and the drop height between
the indoor and outdoor units meets the
requirements shown in Table 7.1:
Table 7.1: The Maximum Length And Drop
Height Based on Models. (Unit: m/ft.)
Type of model Capacity
(Btu/h)
Length of
piping
Maximum drop
height
North America,
Australia and the
eu frequency
conversion Split
Type
<15K 25/82 10/32.8
≥15K - <24K 30/98.4 20/65.6
≥24K - <36K 50/164 25/82
≥36K - ≤60K 65/213 30/98.4
Other Split Type
12K 15/49 8/26
18K-24K 25/82 15/49
30K-36K 30/98.4 20/65.6
42K-60K 50/164 30/98.4
Refrigerant Piping with Twin Indoor Units
When installing multiple indoor units with a single outdoor unit, ensure that the length of the
refrigerant pipe and the drop height between the indoor and outdoor units meet the requirements
illustrated in the following diagram:
L
L1
L2
H2
The line branch pipe
Indoor unit
Outdoor unit
H1
Indoor unit
The drop height
between two
indoor units
must be less
than or equal to
50cm (19.6”)
The drop height
between indoor
unit
and outdoor unit
must be less than
or equal to 20m
(65.6’)
Fig. 7.1
7
Page 18
Oil traps
CAUTION
•
If the indoor unit is installed higher than the
outdoor unit:
An oil trap should be installed every 10m
(32.8ft) of vertical suction line riser.
(See Fig. 7.2)
-If oil flows back into the outdoor unit’s
compressor, this might cause liquid
compression or deterioration of oil return.
Oil traps in the rising gas piping can prevent
this.
CAUTION
Fig. 7.2
The indoor unit is installed higher than the
outdoor unit
If the outdoor unit is installed higher than the
indoor unit:
-It is recommended that vertical suction risers
not be upsized. Proper oil return to the
compressor should be maintained with suction
gas velocity. If velocities drop below7.62m/s
(1500fpm (feet per minute)), oil return will be
decreased. An oil trap should be installed every
6m(20ft) of vertical suction line riser.
(See Fig. 7.3)
Fig. 7.3
The outdoor unit is installed higher than the
indoor unit
Page 19
Pipe
Reamer
Point dow n
Fig. 7.5
Table 7.2
Piping
length
Total piping length
Permitted length
18K+18K 30m/98’ L+Max
(L1, L2)
24K+24K
30K+30K
50m/164’
(farthest distance from
the line pipe branch)
15m/49’ L1, L2
(farthest distance from
the line pipe branch)
10m/32.8’ L1-L2
Drop
height
Drop height between
indoor and outdoor unit
20m/65.6’ H1
Drop height between
two indoor units
0.5m/1.6’ H2
CAUTION
DO NOT deform pipe while cutting. Be extra
careful not to damage, dent, or deform the pipe
while cutting. This will drastically reduce the
heating efficiency of the unit.
1. Make sure that the pipe is cut at a perfect
90° angle. Refer to Fig. 7.4 for examples
of bad cuts
Oblique
Rough
Warped
90°
Fig. 7.4
Step2: Remove burrs.
Burrs can aect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
1. Hold the pipe at a downward angle to
prevent burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove
all burrs from the cut section of the pipe.
Size of joint pipes for indoor unit
Gas side
Capacity
of indoor
unit (A)
Size of main pipe(mm)
Liquid side
Φ12.7(0.5”)
Φ15.9(0.626
”)
Φ15.9(0.626
”)
Φ6.35(0.25
”)
Φ9.5(0.375
”)
Φ9.5(0.375
”)
18K
24K
30K
Table 7.3
Size of joint pipes for 410A indoor unit
CE-FQZHN-01C
CE-FQZHN-01C
CE-FQZHN-01C
Available
branching pipe
Size of joint pipes for outdoor unit
Base on the following tables, select the diameters
of the outdoor unit connective pipes. In case of the
main accessory pipe larger than the main pipe, take
the larger one for the selection.
Model
Gas side Liquid side
Φ15.9(0.626”)
Φ15.9(0.626
”)
Φ15.9(0.626
”)
Φ9.5(0.375
”)
Φ9.5(0.375
”)
Φ9.5(0.375
”)
the size of main pipe(mm)
36K
48K
60K
Table 7.4
Size of joint pipes for 410A outdoor unit
The 1st branching pipe
CE-FQZHN-01C
CE-FQZHN-01C
CE-FQZHN-01C
Step1: Cut pipes
When preparing refrigerant pipes, take extra
care to cut and flare them properly. This will
ensure efficient operation and minimize the
need for future maintenance.
1. Measure the distance between the indoor
and outdoor units.
2. Using a pipe cutter, cut the pipe a little
longer than the measured distance.
Refrigerant Piping Connection Instructions
CAUTION
• The branching pipe must be installed
horizontally. An angle of more than 10° may
cause malfunction.
• DO NOT install the connecting pipe until both
indoor and outdoor units have been installed.
• Insulate both the gas and liquid piping to
prevent water leakage.
Page 20
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s printed circuit board(PCB)
is designed with a fuse that provides overcurrent
protection. The specifications of the fuse are
printed on the circuit board, such as:
T5A/250VAC and 10A/250VAC.
Wiring
Safety Precautions
WARNING
• Disconnect the power supply before
working on the unit.
• All wiring must be performed according to
local and national regulations.
• Wiring must be done by a qualified
technician. Improper connections may
cause electrical malfunction, injury, or fire.
•
An i ndependent circuit and single outlet
must be used for this unit. DO NOT plug
another appliance or charger into the
same outlet. If the cannot handle the load
or there is a defect in the wiring, it can
lead to shock, fire, and unit and property
damage.
• Connect the power cable to the terminals
and fasten it with a clamp. An insecure
connection may cause fire.
• Make sure that all wiring is done correctly
and the control board cover is properly
installed. Failure to do so can cause
overheating at the connection points, fire,
and electrical shock.
• Ensure that main power supply connection
is made through a switch that disconnects
all poles, with contact gap of at least 3mm
(0.118”).
• DO NOT modify the length of the power
cord or use an extension cord.
CAUTION
• Connect the outdoor wires before
connecting the indoor wires.
• Make sure you ground the unit. The
grounding wire should be located away
from gas pipes, water pipes, lightning rods,
telephone wires or other grounding wires.
Improper grounding may cause electrical
shock.
• DO NOT connect the unit to the power
source until all wiring and piping is
completed.
• Make sure that you do not cross your
electrical wiring with your signal wiring.
This may cause distortion and interference.
To prevent distortion when the compressor starts
(you can find the unit’s power information on
the rating sticker):
• The unit must be connected to the main
outlet. Normally, the power supply must
have a impedance of 32 ohms.
• No other equipment should be connected
to the same power circuit.
Outdoor Unit Wiring
WARNING
Before performing any electrical or wiring work,
turn off the main power to the system.
1. Prepare the cable for connection
a. You must first choose the right cable size.
Be sure to use H07RN-F cables.
Table 8.1: Minimum Cross-Sectional Area of
Power and Signal Cables in North America
Rated Current of
Appliance (A)
AWG
≤ 7 18
7 - 13 16
13 - 18 14
18 - 25 12
25 - 30 10
8
Page 21
b. Using wire strippers, strip the rubber jacket
from both ends of the signal cable to reveal
approximately 15cm (5.9”) of wire.
c.
Strip the insulation from the ends.
d. Using a wire crimper, crimp u-lugs on the
ends.
NOTE: When connecting the wires, strictly
follow the wiring diagram found inside the
electrical box cover.
2.
Remove the electric cover of the outdoor unit.
If there is no cover on the outdoor unit, take
off the bolts from the maintenance board
and remove the protection board.
(See Fig. 8.1 and 8.2).
Cover
Screw
Fig. 8.1
Protection Board
Fig. 8.2
3.
Connect the u-lugs to the terminals
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the u-lug
of each wire to its corresponding terminal.
4. Clamp down the cable with the cable clamp.
5.
Insulate unused wires with electrical tape.Keep
them away from any electrical or metal parts.
6. Reinstall the cover of the electric control box.
Indoor Unit Wiring
1.
Prepare the cable for connection.
a. Using wire strippers, strip the rubber jacket
from both ends of the signal cable to reveal
about 15cm (5.9”) of the wire.
b.
Strip the insulation from the ends of the
wires.
c.
Using a wire crimper, crimp the u-lugs to
the ends of the wires.
2. Remove the cover of the electric control box
on your indoor unit.
3.
Connect the u-lugs to the terminals.
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the
u-lug of each wire to its corresponding
terminal. Refer to the Serial Number and
Wiring Diagram located on the cover of the
electric control box.
Connective wiring diagram
Wiring diagram
Control box
Fig. 8.3
Table 8.2: Other World Regions
Rated Current of
Appliance (A)
Area (mm²)
Nominal Cross-Sectional
≤ 6 0.75
6 - 10 1
10 - 16 1.5
16 - 25 2.5
25- 32 4
32 - 45 6
Fig. 8.4
Magnetic ring
(if supplied and packed with the accessories)
1 2 3
Pass the belt through
the hole of the Magnetic
ring to fix it on the cable
Page 22
Step 3: Flare pipe ends
Proper flaring is essential to achieve an
airtight seal.
1. After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
2. Sheath the pipe with insulating material.
3.
Place flare nuts on both ends of pipe.
Make sure they are facing in the right
direction, because you can’t put them on
or change their direction after flaring.
See Fig. 7.6
Flare nut
Copper pipe
Fig. 7.6
4.
Remove PVC tape from ends of pipe when
ready to perform flaring work.
5.
Clamp flare form on the end of the pipe.
The end of the pipe must extend beyond
the flare form.
Flare form
Pipe
Fig. 7.7
6.
Place flaring tool onto the form.
7.
Turn the handle of the flaring tool
clockwise until the pipe is fully flared.
Flare the pipe in accordance with the
dimensions shown in table 7.5.
8.
Remove the flaring tool and flare form, then
inspect the end of the pipe for cracks and
even flaring.
Step 4: Connect pipes
Connect the copper pipes to the indoor unit first,
then connect it to the outdoor unit. You should
first connect the low-pressure pipe, then the highpressure pipe.
1.
When connecting the flare nuts, apply a thin
coat of refrigeration oil to the flared ends of
the pipes.
2. Align the center of the two pipes that you
will connect.
Indoor unit tubing
Flare nut
Pipe
Fig. 7.9
3.
Tighten the flare nut as tightly as possible by hand.
4.
Using a spanner, grip the nut on the unit tubing.
5.
While firmly gripping the nut, use a torque
wrench to tighten the flare nut according to
the torque values in table 7.5.
Table 7.5: PIPING EXTENSION BEYOND FLARE FORM
Pipe
gauge
Tightening
torque
Flare dimension (A)
(Unit: mm/Inch)
Flare shape
Min. Max.
Ø 6.4
R0.4~0.8
45
°
±
2
90
°
±
4
A
Fig. 7.8
Ø 9.5
Ø 12.7
Ø 15.9
Ø 19.1
Ø 22
65-67 N.m
(663-683 kgf.cm)
23.2/0.91 23.7/0.93
75-85N.m
(765-867 kgf.cm)
26.4/1.04 26.9/1.06
18-20 N.m
(183-204 kgf.cm)
8.4/0.33 8.7/0.34
25-26 N.m
(255-265 kgf.cm)
13.2/0.52 13.5/0.53
35-36 N.m
(357-367 kgf.cm)
16.2/0.64 16.5/0.65
45-47 N.m
(459-480 kgf.cm)
19.2/0.76 19.7/0.78
NOTE: Use both a spanner and a torque wrench
when connecting or disconnecting pipes to/from
the unit.
Fig. 7.10
CAUTION
•
Ensure to wrap insulation around the piping.
Direct contact with the bare piping may result
in burns or frostbite.
•
Make sure the pipe is properly connected.
Over tightening may damage the bell mouth
and under tightening may lead to leakage.
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle according
to the diagram below. DO NOT bend the tubing
more than 90° or more than 3 times.
Bend the pipe with thumb
min-radius 10cm (3.9”)
Fig. 7.11
6.
After connecting the copper pipes to the
indoor unit, wrap the power cable, signal
cable and the piping together with binding
tape.
NOTE: DO NOT intertwine signal cable with
other wires. While bundling these items
together, do not intertwine or cross the signal
cable with any other wiring.
7. Thread this pipeline through the wall and
connect it to the outdoor unit.
8. Insulate all the piping, including the valves
of the outdoor unit.
9. Open the stop valves of the outdoor unit
to start the flow of the refrigerant
between the indoor and outdoor unit.
CAUTION
Check to make sure there is no refrigerant leak
after completing the installation work. If there is
a refrigerant leak, ventilate the area immediately
and evacuate the system (refer to the Air
Evacuation section of this manual).
Page 23
NOTE: Use both a spanner and a torque wrench
when connecting or disconnecting pipes to/from
the unit.
Fig. 7.10
CAUTION
•
Ensure to wrap insulation around the piping.
Direct contact with the bare piping may result
in burns or frostbite.
•
Make sure the pipe is properly connected.
Over tightening may damage the bell mouth
and under tightening may lead to leakage.
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle according
to the diagram below. DO NOT bend the tubing
more than 90° or more than 3 times.
Bend the pipe with thumb
min-radius 10cm (3.9”)
Fig. 7.11
6.
After connecting the copper pipes to the
indoor unit, wrap the power cable, signal
cable and the piping together with binding
tape.
NOTE: DO NOT intertwine signal cable with
other wires. While bundling these items
together, do not intertwine or cross the signal
cable with any other wiring.
7. Thread this pipeline through the wall and
connect it to the outdoor unit.
8. Insulate all the piping, including the valves
of the outdoor unit.
9. Open the stop valves of the outdoor unit
to start the flow of the refrigerant
between the indoor and outdoor unit.
CAUTION
Check to make sure there is no refrigerant leak
after completing the installation work. If there is
a refrigerant leak, ventilate the area immediately
and evacuate the system (refer to the Air
Evacuation section of this manual).
Page 24
You can use the unit’s automatic airflow
adjustment function to set external static
pressure.
Automatic airflow adjustment is the volume
of blow-off air that has been automatically
adjusted to the quantity rated.
1. Make sure the test run is done with a dry
coil. If the coil is not dry, run the unit for 2
hours in FAN ONLY mode to dry the coil.
2. Check that both power supply wiring and
duct installation have been completed
Check that any closing dampers are open.
Check that the air filter is properly attached
to the air suction side passage of the unit.
3. If there is more than one air inlet and outlet,
adjust the dampers so that the airflow rate
of each air inlet and outlet conforms with
the designed airflow rate. Make sure the
unit is in FAN ONLY mode. Press and set
the airflow adjustment button on the
remote control to change the airflow rate
from H or L.
•
•
4. Set the parameters for automatic airflow
adjustment. When the air conditioning unit
is off, perform the follwoing steps:
- Press“COPY”.
- Press “+” or “-” to select the AF.
- Press “CONFIRM”. The air conditioning
unit will then start the fan for airflow
automatic adjustment.
ON will flash during when the
fan is on during automatic
airflow adjustment.
After 3 to 6 minutes, the air conditioning
unit stops operating once automatic airflow
adjustment has finished.
CAUTION
• DO NOT adjust the dampers when
automatic airflow adjustment is active.
CAUTION
• If there is no change after airflow
adjustment in the ventilation paths, be sure
to reset automatic airflow adjustment.
• If there is no change to ventilation paths
after airflow adjustment,contact your
dealer, especially if this occurs after
testing the outdoor unit or if the unit has
been moved to a different location.
• Do not use automatic airflow adjustment
with remote control,if you are using
booster fans, outdoor air processing unit,
or a HRV via duct.
• If the ventilation paths have been changed,
reset airflow automatic adjustment as
described from step 3 onwards.
CAUTION
• While connecting the wires, please strictly
follow the wiring diagram.
• The refrigerant circuit can become very
hot. Keep the interconnection cable away
from the copper tube.
4.
Clamp down the cable with the cable clamp.
The cable must not be loose or pull on the
u-lugs.
5. Reinstall the electric box cover .
Using the wire controller to set external
static pressure (some models)
Page 25
Power Specifications
NOTE: Electric auxiliary heating type circuit bre
aker/fuse need to add more than 10 A.
Indoor Power Supply Specifications
MODEL
(Btu/h)
≤18K 19K~24K 25K~36K 37K~48K 49K~60K
POWER
PHASE 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase
VOLT
VOLT
VOLT
VOLT
VOLT
VOLT
208-240V 208-240V 208-240V 208-240V 208-240V
CIRCUIT BREAKER/
FUSE(A)
25/20 32/25 50/40 70/55 70/60
MODEL
(Btu/h)
≤36K 37K~60K ≤36K 37K~60K
POWER
PHASE 3 Phase 3 Phase 3 Phase 3 Phase
380-420V 380-420V 208-240V 208-240V
CIRCUIT BREAKER/FUSE(A) 25/20 32/25 32/25 45/35
MODEL
(Btu/h)
≤18K 19K~24K 25K~36K 37K~48K 49K~60K
POWER
PHASE 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase
208-240V 208-240V 208-240V 208-240V 208-240V
CIRCUIT BREAKER/
FUSE(A)
25/20 32/25 50/40 70/55 70/60
MODEL
(Btu/h)
≤36K 37K~60K ≤36K 37K~60K
POWER
PHASE 3 Phase 3 Phase 3 Phase 3 Phase
380-420V 380-420V 208-240V 208-240V
CIRCUIT BREAKER/FUSE(A) 25/20 32/25 32/25 45/35
Outdoor Power Supply Specifications
Independent Power Supply Specifications
MODEL
(Btu/h)
≤18K 19K~24K 25K~36K 37K~48K 49K~60K
POWER
(indoor)
PHASE 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase
208-240V 208-240V 208-240V208-240V 208-240V
CIRCUIT BREAKER/
FUSE(A)
15/10 15/10 15/10 15/10 15/10
POWER
(outdoor)
PHASE 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase
208-240V 208-240V 208-240V
208-240V
208-240V
CIRCUIT BREAKER/
FUSE(A)
25/20 32/25 50/40 70/55 70/60
Page 26
MODEL
(Btu/h)
≤18K 19K~24K 25K~36K 37K~48K 49K~60K
POWER
(indoor)
PHASE 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase
220-240V 220-240V 220-240V220-240V 220-240V
CIRCUIT BREAKER/
FUSE(A)
15/10 15/10 15/10 15/10 15/10
POWER
(outdoor)
PHASE 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase
208-240V 208-240V 208-240V
208-240V
208-240V
CIRCUIT BREAKER/
FUSE(A)
25/20 25/20 40/30 50/40 50/40
MODEL
(Btu/h)
≤36K 37K~60K ≤36K 37K~60K
POWER
(indoor)
PHASE 1 Phase 1 Phase 1 Phase 1 Phase
VOLT
VOLT
VOLT
VOLT
VOLT
VOLT
208-240V 208-240V 208-240V 208-240V
CIRCUIT BREAKER/FUSE(A) 15/10 15/10 15/10 15/10
POWER
(outdoor)
PHASE 3 Phase 3 Phase 3 Phase 3 Phase
380-420V 380-420V 208-240V 208-240V
CIRCUIT BREAKER/FUSE(A) 25/20 32/25 32/25 45/35
MODEL
(Btu/h)
≤36K 37K~60K ≤36K 37K~60K
POWER
(indoor)
PHASE 1 Phase 1 Phase 1 Phase 1 Phase
220-240V 220-240V 220-240V 220-240V
CIRCUIT BREAKER/FUSE(A) 15/10 15/10 15/10 15/10
POWER
(outdoor)
PHASE 3 Phase 3 Phase 3 Phase 3 Phase
380-420V 380-420V 208-240V 208-240V
CIRCUIT BREAKER/FUSE(A) 25/20 32/25 32/25 40/30
Inverter Type A/C Power Specifications
NOTE:
To be in compliance with EN61000-3-11, the product shall be connected
= 0.267802236 Ω or less. Before connecting only to a supply of the system impedance: Zsys
the product to public power network, please consult your local power supply authority to
ensure the power network meet above requirement.
Page 27
Air Evacuation
Safety Precautions
CAUTION
• Use a vacuum pump with a gauge reading
lower than -0.1MPa and an air discharge
capacity above 40L/min.
• The outdoor unit does not need vacuuming.
DO NOT open the outdoor unit’s gas and
liquid stop valves.
• Ensure that the Compound Meter reads
-0.1MPa or below after 2 hours. If after
three hours the gauge reading is still above
-0.1MPa, check if there is a gas leak or
water inside the pipe. If there is no leak,
perform another evacuation for 1 or 2 hours.
•
DO NOT use refrigerant gas to evacuate the
system.
Evacuation Instructions
Before using a manifold gauge and a vacuum
pump, read their operation manuals to make
sure you know how to use them properly.
Manifold Gauge
Compound gauge
-76cmHg
Low pressure valve
High pressure valve
Charge hose
Charge hose
Vacuum pump
Pressure gauge
Low pressure valve
Fig. 9.1
1. Connect the manifold gauge’s charge hose to
the service port on the outdoor unit’s low
pressure valve.
2. Connect the manifold gauge’s charge hose
from the to the vacuum pump.
3. Open the Low Pressure side of the manifold
gauge. Keep the High Pressure side closed.
4. Turn on the vacuum pump to evacuate the
system.
5. Run the vacuum for at least 15 minutes, or
until the Compound Meter reads -76cmHG
(-1x105Pa).
6. Close the manifold gauge’s Low Pressure valve
and turn off the vacuum pump.
7. Wait for 5 minutes, then check that there has
been no change in system pressure.
NOTE: If there is no change in system pressure,
unscrew the cap from the packed valve (high
pressure valve). If there is a change in system
pressure, there may be a gas leak.
8. Insert hexagonal wrench into the packed valve
(high pressure valve) and open the valve by
turning the wrench in a 1/4 counterclockwise
turn. Listen for gas to exit the system, then
close the valve after 5 seconds.
Flare nut
Cap
Valve body
Valve stem
Fig. 9.2
9. Watch the Pressure Gauge for one minute to
make sure that there is no change in pressure. It
should read slightly higher than the atmospheric
pressure.
10.Remove the charge hose from the service port.
11.Using hexagonal wrench, fully open both the
high pressure and low pressure valves.
OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal
wrench until it hits against the stopper. DO NOT
try to force the valve to open further.
12.Tighten valve caps by hand, then tighten it
using the proper tool.
9
Page 28
Note On Adding Refrigerant
CAUTION
• Refrigerant charging must be performed after wiring, vacuuming, and the leak testing.
• DO NOT refrigerant or overcharge the system.
Doing so can damage the unit or impact it’s functioning.
•
re that the
appropriate refrigerant is used.
• Refrigerant containers must be opened slowly. Always use protective gear when charging the
system.
• DO NOT refrigerants types.
Some systems r
re additional charging depending on pipe lengths. The standard pipe length
varies according to local r rd pipe length is
7.5m (25’) In other areas, the standard pipe length is 5m (16‘). The additional refrigerant to be
charged can be calculated using the following formula:
Liquid Side Diameter
φ6.35(1/4”) φ9.52(3/8”) φ12.7(1/2”)
R22
(Total pipe length standar
30g (0.32oZ)/m(ft)
(Total pipe length standar
65g(0.69oZ)/m(ft)
(Total pipe length standar
115g(1.23oZ)/m(ft)
R22
(Total pipe length standard pipe length)
(Total pipe length standard pipe length)
(Total pipe length -
standard pipe length)
(Total pipe length -
standard pipe length)
R410A:
(Total pipe length standard pipe length)
(Total pipe length standard pipe length)
(Total pipe length standard pipe length)
R410A:
(Total pipe length standard pipe length)
(Total pipe length standard pipe length)
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