INSTALLATION MANUAL DC INVERTER FREE

INSTALLATION
MANUAL
DC INVERTER FREE
Thank you very much for purchasing our air conditioner,
Before using your air conditioner, please read this manual carefully and keep it for future reference.
CONTENTS
PAGE
PRECAUTIONS........................................................................................1
Accordingly the exclusive tools are required for the new
refrigerant (R410A):
For connecting pipes, use new and clean piping designed for
R410A,and please care so that water or dust does not enter.
Moreover, do not use the existing piping because there are
problems with pressure-resistance force and impurity in it.
ATTACHED FITTINGS..............................................................................2
OUTDOOR UNIT INSTALLATION..............................................................3
INSTALL THE CONNECTING PIPE............................................................4
ELECTRICAL WIRING..............................................................................9
CAUTION
Do not connect the Appliance from Main Power Supply.
TEST RUNNING.....................................................................................11
PRECAUTIONS ON REFRIGERANT LEAKAGE.........................................12
TURN OVER TO CUSTOMER..................................................................12
This unit must be connected to the main power supply by
means of a switch with a contact separation of at least 3 mm.
The installation fuse must be used for the power supply line of
this conditioner.
WARNING
1.
PRECAUTIONS
Ensure that all Local, National and International regulations
are satisfied.
Read this ”PRECAUTIONS ” carefully before Installation.
The precautions described below include the important
items regarding safety. Observe them without fail.
After the installation work, perform a trial operation to check
for any problem.
Follow the Owner’s Manual to explain how to use and
maintain the unit to the customer.
Turn off the main power supply switch (or breaker) before
maintenance the unit .
Ask the customer that the Installation Manual and the Owner’s
Manual should be kept together .
CAUTION
New Refrigerant Air Conditioner Installation
THIS AIR CONDITIONER ADOPTS THE NEW HFC
REFRIGERANT(R410A)WHICH DOES NOT DESTROY OZONE
LAYER.
The characteristics of R410A refrigerant are; Hydrophilic, oxidizing membrane or oil, and its pressure is approx.1.6 times higher than that of refrigerant R22.Accompanied with the new refrigerant, refrigerating oil has also been changed ,Therefore, during
installation work, be sure that water, dust, former refrigerant, or
refrigerating oil does not enter the refrigerating cycle.
To prevent charging an incorrect refrigerant and refrigerating oil,
the sizes of connecting sections of charging port of the main
unit and installation tools are charged from those for the
conventional refrigerant.
Ask an authorized dealer or qualified installation professional to
install/maintain the air conditioner.
Inappropriate installation may result in water leakage,electric shock
or fire.
Turn off the main power supply switch or breaker before
attempting any electrical work.
Make sure all power switches are off.Failure to do so may cause
electric shock.
Connect the connecting cable correctly.
If the connecting cable is connected in a wrong way, electric parts
may be damaged.
When moving the air conditioner for the installation into another
place, be very careful not to enter any gaseous matter other
than the specified refrigerant into the refrigeration cycle.
If air or any other has is mixed in refrigerant, the gas pressure in the
refrigeration cycle becomes abnormally high and it may resultingly
causes pipe burst and injuries on persons.
Do not modify this unit by removing any of the safety guards or
by by-passing any of the safety interlock switches.
Exposure of unit to water or other moisture before installation
may cause a short-circuit of electrical parts.
Do not store it in a wet basement or expose to rain or water.
After unpacking the unit, examine it carefully if there are
possible damage.
Do not install in a place that might increase the vibration of the
unit.
To avoid personal injury (with sharp edges), be careful when
handling parts.
Perform installation work properly according to the Installation
Manual.
Inappropriate installation may result in water leakage, electric shock
or fire.
When the air conditioner is installed in a small room, provide
appropriate measures to ensure that the concentration of
refrigerant leakage occur in the room does not exceed the
critical level.
Install the air conditioner securely in a location where the base
can sustain the weight adequately.
Perform the specified installation work to guard against an
earthquake.
If the air conditioner is not installed appropriately, accidents may
occur due to the falling unit.
If refrigerant gas has leaked during the installation work,
ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas
may generate.
After the installation work, confirm that refrigerant gas doer not
leak.
If refeigerant gas leaks into the room and flows near a fire source,
such as a cooking range, noxious gas might generate.
Electrical work must be performed by a qualified electrician in
accordance with the Installation Manual. Make sure the air
conditioner uses an exclusive power supply.
installation manual
1
An insufficient power supply capacity or inappropriate installation
may cause fire.
Use the specified cables for wiring connect the terminals
securely fix. To prevent external forces applied to the terminals
from affecting the terminals.
Be sure to provide grounding.
Do not connect ground wires to gas pipes, water pipes, lightning rods
or ground wires for telephone cables.
Conform to the regulations of the local electric company when
wiring the power supply.
Inappropriate grounding may cause electric shock.
Do not install the air conditioner in a location subject to a risk
of exposure to a combustible gas.
If a combustible gas leaks, and stays around the unit, a fire may occur.
Required tools for installation work
1) Philips screw driver
2) Hole core drill(65mm)
3) Spanner
4) Pipe cutter
5) Knife
2.
6) Reamer
7) Gas leak detector
8) Tape measure
9) Thermometer
10) Mega-tester
11) Electro circuit tester
12) Hexagonal wrench
13) Flare tool
14) Pipe bender
15) Level vial
16) Metal saw
17) Gauge manifold (Charge hose:R410A special requirement)
18) Vacuum pump (Charge hose:R410A special requirement)
19) Torque wrench
1/4(17mm)16N•m (1.6kgf•m)
3/8(22mm)42N•m (4.2kgf•m)
1/2(26mm)55N•m (5.5kgf•m)
5/8(15.9mm)120N•m (12.0kgf•m)
20) Copper pipe gauge adjusting projection margin
21) Vacuum pump adapter
ATTACHED FITTINGS
Please check whether the following fittings are of full scope. If there are some spare fittings , please restore them carefully.
NAME
INSTALLATION FITTINGS
2
QUANTITY
1. Outdoor unit installation manual
1
2. Outdoor unit owner’s manual
1
3. Indoor unit owner’s manual
1
4. Installation Instructions:
Indoor Unit Manifold
1
5.Water outlet connection pipe
1
6.Straight screwdriver
1
7.Sealing ring
1
8.Waterproof chassis cover
2
9.Connection pipe(26kW)
1
10.Curved connection pipe(26kW)
1
Refrigerant Piping
Piping kit used for the conventional refrigerant cannot be used.
Use copper pipe with 0.8 mm or more thickness for φ9.5.
Use copper pipe with 1.0 mm or more thickness for φ15.9.
Use copper pipe with 1.0 mm or more thickness for φ19.0.
Flare nut and flare works are also different form those of the
conventional refrigerant.take out the flare nut attached to the main
unit of the air conditioner, and use it.
Before installation
Be careful to the following items before installation.
Air purge
For air purge, use a vacuum pump.
Do not use refrigerant charged in the outdoor unit for air purge.
(The refrigerant for air purge is not contained in the outdoor unit.)
Electrical cabling
Be sure to fix the power cables and indoor/outdoor connecting
cables with clamps so that they do not contact with the cabinet, etc.
installation manual
SHAPE
Installation Place
A place which provides a specified space around the outdoor unit.
A place were the operation noise and discharged air are not given
to your neighbors.
A place that is not exposed to a strong wind.
A place that does not block a passage.
When the outdoor unit is installed in an elevated position, make
sure it's four feet securely installed.
There must be sufficient space for carrying in the unit.
A place where the drain water does not make any problem.
CAUTION
Install the outdoor unit at a place where discharge air is not blocked.
When an outdoor unit is installed in a place that is always exposed
to a strong wind like a coast or on a high storey of a building, secure
a normal fan operation by using a duct or a wind shield.
The insulation of the metal parts of the building and the air
conditioner should comply with the regulation of National Electric
Standard.
When installing the outdoor unit in a place that is constantly
exposed to a strong wind such as the upper stairs or rooftop of a
building, apply the windproof measures referring to the following
examples.
Install the unit so that its discharge port faces to the wall of the
building. Keep a distance 3000mm or more between the unit and
the wall surface.
Do not mount the outdoor unit on a wall.
CAUTION
Keep indoor unit, outdoor unit, power supply wiring and
transmission wiring at least 1 meter away from televisions
and radios. This is to prevent image interference and
noise in those electrical appliances. (Noise may be
generated depending on the conditions under which the
electric wave is generated, even if 1 meter is kept.)
3.2 Installation space (Unit:mm)
3000
Strong
wind
1558
Fig.2-1
Supposing the wind direction during the operation season of the
discharge port is set at right angle to the wind direction.
Strong
wind
1120
414
400
528
205.8
494
668
Fig.2-2
Fig.3-1
Single unit installation
(Wall or obstacle)
Air inlet
> 300
Installation in the following places may result in some troubles.
Do not install the unit in such places below.
A place full of machine oil.
A place full of sulphuric gas.
A place where high-frequency radio waves are likely to be
generated as from audio quipment, welders, and medical
equipment.
>300
Maintain the electric
wire and pipeline
Air inlet
OUTDOOR UNIT INSTALLATION
>3000
3.
>600
Air outlet
3.1 Installation place
Please keep away from the following place, or malfunction of the
machine may be caused:
Fig.3-2
Parallel connect the two units or above
There is combustible gas leakage.
There is much oil (including engine oil) ingredient.
>300
>600
There is salty air surrounding(near the coast)
There is caustic gas (the sulfide, for example) existing in the
air (near a hotspring)
A place the heat air expelled out from the outdoor unit can
reach your neighbor’s window.
A place that the noise interferes your neighbors every day
life.
A place that is too weak to bear the weight of the unit
>3000
Fig.3-3
Parallel connect the front with rear sides
>3000
>1000
>6000
>4000
>300
Uneven place.
Insufficient ventilation place.
Near a private power station or high Frequency equipment.
Install indoor unit, outdoor unit, power cord and connecting
wire at least 1m away from TV set or radio to prevent noise or
picture interference.
Fig.3-4
installation manual
3
4.
3.3 Moving and installation
Check whether the height drop between the indoor unit and
outdoor unit, the length of refrigerant pipe, and the number of
the bends meet the following requirements:
>600
Since the gravity center of the unit is not at its physical center,
so please be careful when lifting it with a sling.
Never hold the inlet of the outdoor unit to prevent it from
deforming.
Do not touch the fan with hands or other objects.
Do not lean it more than 45°, and do not lay it sidelong.
Make concrete foundation according to the sepecifications of
the outdoor units.(refer to Fig.3-5)
Fasten the feet of this unit with bolts firmly to prevent it from
collapsing in case of earthquake or strong wind.
(refer to Fig.3-5)
INSTALL THE CONNECTING PIPE
Fig.4-1
Fix with bolt
4.1 Refrigerant piping
CAUTION
Fig.3-5
NOTE
All the pictures in this manual are for explanation purpose only.
They may be slightly different from the air conditioner you
purchased(depend on model).The actual shape shall prevail.
The indoor and outdoor connecting pipe interface and power
line outlet
3.4 Centralized Chassis Drainage
When the outdoor unit requires centralized drainage, install the
chassis and two waterproof covers for the chassis, as shown in
Figure 3.6. Install the water outlet union pipe and sealing ring on
the chassis, and then connect the drainage pipe to complete
centralized drainage installation.
Waterproof chassis cover
Please pay attention to avoid the components while connect to
the connecting pipes.
To prevent the refrigerant piping from oxidizing inside when
welding, it is necessary to charge nitrogen, or oxide will chock
the circulation system.
Vavious piping and viring patterns can be selected,such as out from
the front ,the back the side ,and undersurface, etc.The follow display
the locations of several piping and wiring knock-off interfaces
Table 4-1
Sealing ring for the
water outlet union pipe
Front out pipe
Side out pipe
CAUTION
Fig.3-6
CAUTION
While installing the outdoor unit, pay attention to the installation
place and the drainage pattern;
if it’s installed at the alpine zone, the frozen condensed water will
block up the water outlet, please pull out the rubber stopper of the
reserve water outlet. If that still fails to satisfy for the water draining,
please knock open the other two water outlets, and keep the water
can drain in time.
Pay attention to the knock the reserve water outlet from outside to
inside, and it will be beyond repair after knocking open, please pay
attention to the installation place, lest cause the inconvenience.
Please do the moth proofing for the knocked out hole, to avoid the
pest processing into and destroy the components.
installation manual
4
1. Side out pipe: cut the side hole of the pipe-outlet plate selectively.
It is suggested to cut a piece of metal plate below to avoid the mouse
come and destroy the machine wiring body.
2.Front out pipe: cut the frontal hole of the pipe-outlet plate selectively.
It is suggested to cut a piece of metal plate right side to avoid the
mouse come and destroy the machine wiring body.
3. Wiring of power cord: the strong and weak electrical wire should be
out through the two plastic holes of the pipe-outlet plate, and binded
with gas and liquid pipe together.
4.2 Leak Detection
Use soap water or leak detector to check every joint whether leak or
not (Refer to Fig.4-2).Note:
A is low pressure side stop valve
B is high pressure side stop valve
C and D is connecting pipes interface of indoor and outdoor units
The second connect methond
Check point of outdoor unit
D
C
Outdoor Unit(Take Model 260 for example)
A
B
Check point of indoor unit
1
D
intdoor Units
/
/
%
$
Fig. 4-2
1
E
4.3 Heat Insulation
1
/
The first Line Branch Pipe
F
/
1
'
&
G
Do the heat insulation to the pipes of air side and liquid side
separately. The temperature of the pipes of air side and liquid side
when cooling, for avoiding condensation please do the heat
insulation fully.
The air side pipe should use closed cell foamed insulation
material, which the fire-retardant is B1 grade and the heat
resistance over 120°C.
When the external diameter of copper pipe≤Φ12.7mm, the
thickness of the insulating layer at least more than 15mm;
When the external diameter of copper pipe≥Φ15.9mm, the
thickness of the insulating layer at least more than 20mm.
Please use attached heat-insulating materials do the heat
insulation without clearance for the connecting parts of the indoor
unit pipes.
Cut from upward
H
(
I
1
Fig. 4-5
NOTE
The distance between the first buranch to the last indoor unit is
more than 15m,choose the second connect methond.
The pipe between the indoor unit to the closest branch must less
than 15m.
Size of main pipe and corresponding branch joint and branch
header
Affiliated heat pump belt
1) R410A Indoor unit connecting pipes diameters 4-3DŽ
2) Example 1˖In the Fig.4-5,The downstream inner units of the
L2,and its total capacity is 45×2˙90ˈrefers to the Table 4.4,the
air/liquid side of L2 is˖Φ15.9/Φ9.5DŽ
Fig. 4-3
4.4 Connecting method
R410A Indoor unit connecting pipes diameters
Select refrigerant pipe
Capacity of the
downstream
indoor unit
Table 4-2
pipe connect position
pipe definition
code
The pipe between outdoor unit to the
first branch of indoor unit.
main pipe
1
4.4 Confirmation for the diameters of indoor
unit connecting pipes
Site pipe side
The unit body
/
Table 4-3
Main pipe size (mm)
Air pipe
Liquid pipe
Applicable
manifold
$ψ
¢
¢
ŏ$ψ
¢
¢
)4=+1&
ŏ$ψ
¢
¢
)4=+1&
ŏ$
¢
¢
)4=+1&
)4=+1&
/
The main pipes of
indoor unit
The pipe after the first branch do not
drect connect with the indoor unit.
The branch pipes
of indoor unit
The pipe after the branch connect with DEF
GHI
the indoor unit.
Indoor unit branch
pipes components
The pipes connect with the main pipeǃ
$%&
the branch pipe and the the main pipe
'(
of indoor unit.
/Њ/
4.5 Confirmation for the diameters of outdoor
unit connecting pipes
Main pipe size when the totTotal capaal equivalent piping length
ctiy of The
of liquid + air side is <90m
outdoor
Air side Liquid si- The first Line
units
(mm)
The first connect methond
de(mm)
Branch Pipe
Main pipe size when the total equivalent piping length
of liquid + air side is ≥90m
Air side Liquid si- The first Line
Branch Pipe
(mm)
de(mm)
Φ15.9
Φ9.5
FQZHN-01C
Φ19.1
Φ9.5
FQZHN-01C
ŏ$ψ Φ19.1
Φ9.5
FQZHN-01C
Φ22.2
Φ9.5
FQZHN-02C
ŏ$ψ Φ22.2
Φ9.5
FQZHN-02C
Φ25.4
Φ9.5
FQZHN-02C
$ψ
Outdoor Unit
Table 4-4
R410A outdoor unit connecting pipes diameters
I
/
/
(
/
/ %
/
'
H
&
G
F
$
D
E
NOTE
The first Line Branch Pipe
Fig. 4-4
The straight distance between copper pipe turning and the contiguous branch pipe is at least 0.5m;
The straight distance between the contiguous branchpipes is at
least 0.5m;
The straight distance which the branch pipes connected to the
indoor unit is at least 0.5m;
installation manual
5
Branch header must be connected with indoor units directly,
the further branch connection is not allowed.
Table 4-8
Outdoor Unit
(kW)
Capacity of
Maximum
Outdoor unit Quantity of
(horsepower) Indoor unit
Select branch joint
Select the branch joint according to the total designed capacity
of indoor units which it connects to. If this capacity is more than
that of the outdoor unit, then select the connection according to
the outdoor unit.
The selection of branch header depends on the quantity of
branches it connects to.
Connection method
Table 4-5
Air side
Liquid side
20kW
Welding or Flaring
Welding or Flaring
22.4kW
Welding or Flaring
Welding or Flaring
26kW
Welding or Flaring
Welding or Flaring
Indoor unit
Flaring
Flaring
Branch pipe
Welding or Flaring
Welding or Flaring
R410A
7
10
50%~130%
22.4
8
11
50%~130%
26
9
12
50%~130%
NOTE
The indoor unit capacity total can not exceed 130% of the outdoor
unit load.
Overloading reduces the corresponding capacity.
Table 4-9
Capacity
ranking
Capacity
(horsepower)
Capacity
ranking
Capacity
(horsepower)
18
0.6
80
2.8
22
0.8
90
3.2
28
1
100
3.5
36
1.3
112
4
45
1.6
120
4.3
56
2
125
4.5
71
2.5
140
5
(A: the total capacity of indoor units)
Refrigerant
20
When capacity of indoor unit greater than the sum of 100%, capacity
of indoor unit will be attenuated.
When capacity of indoor unit greater than or equal to the sum of
120%, in order to ensure the effectiveness of machine, and then try to
open the indoor units at different time.
Piping sizes at the branch pipe
Table 4-6
Sum Capacity
of Indoor unit
(horsepower)
A (TYPE)
Air Side (Φ)
Liquid Side (Φ)
Wall mounted 22~45
12.7(Flaring nut)
6.4(Flaring nut)
Wall mounted 56
15.9(Flaring nut)
9.5(Flaring nut)
Four-sided air outlet
28~45
12.7(Flaring nut)
6.4(Flaring nut)
Four-sided air outlet
56~80
15.9(Flaring nut)
9.5(Flaring nut)
One-sided air outlet
18~45
12.7(Flaring nut)
6.4(Flaring nut)
Table 4-10
One-sided air outlet
56
15.9(Flaring nut)
9.5(Flaring nut)
Low static pressure
18~45
12.7(Flaring nut)
6.4(Flaring nut)
The max height drop(m)
The length of
MODEL
The number
refrigerant
(kW)
of bends
When outdoor When outdoor
pipe(m)
unit is top
unit is bottom
Low static pressure 56
15.9(Flaring nut)
9.5(Flaring nut)
20
25
20
50
Thin duct type 71
15.9(Flaring nut)
9.5(Flaring nut)
22.4
25
20
50
A5 duct type 22~45
12.7(Flaring nut)
6.4(Flaring nut)
A5 duct type 56~140
15.9(Flaring nut)
9.5(Flaring nut)
26
25
20
50
Four-way Cassette Type
15~45
12.7(Flaring nut)
6.4(Flaring nut)
Console Type 22~45
12.7(Flaring nut)
6.4(Flaring nut)
Tow-way Cassette Type
22~45
12.7(Flaring nut)
6.4(Flaring nut)
Tow-way Cassette Type
56~71
15.9(Flaring nut)
9.5(Flaring nut)
12.7(Flaring nut)
6.4(Flaring nut)
15.9(Flaring nut)
9.5(Flaring nut)
Ceiling And Floor Type
36~45
Ceiling And Floor Type
56~160
When the outdoor unit connects one indoor unit
4.6 Illustration
Outdoor Unit((Take Model 260 for example)
1
D
Indoor unit
/
/
Expose And Concealed
Floor-standing type 22~45
12.7(Flaring nut)
6.4(Flaring nut)
less than 10
%
$
1
E
1
/
Expose And Concealed
Floor-standing type 56~80
15.9(Flaring nut)
9.5(Flaring nut)
F
/
The first line Branch Pipe
1
'
&
G
/
Pipe diameter of the connector in the outdoor unit's body
H
(
Table 4-7
Piping connection Pipe diameter of outdoor unit's connector(mm)
side
Model(kW)
Gas Side
Liquid Side
20
Φ19.1
Φ9.5
Φ22.2
Φ9.5
22.4
26
installation manual
6
I
1
1
Fig.4-6
Caution: Suppose in the displayed piping system, the total equivalent piping length of air side + liquid side is longer than 90m.
The indoor unit below to the main pipe L3 are N3̚N6, and its total capacity is 45×3+56=191, the size of pipe L3 isΦ19.1/Φ9.5,
and the branch pipe C should be FQZHN-01C.
The indoor unit below to the main pipe A are N1̚N6, and its total capacity is 45×5+56=281, and the branch pipe should be
FQZHN-02C, and because the total piping length of liquid + air side
is ≥90m, check Table.4-4, and the first branch pipe should apply
FQZHN-02C, and according to the principle of maximum value, it
should apply FQZHN-02C.
Indoor unit branch pipe
Inner branch pipes are a~f, the size selection please refers to
Table4-6. Note: The max. length of the branch pipe should not
longer than 15m.
The main pipes of indoor unit and the indoor unit branch pipe
components
The downstream inner units of the main pipe L2 are N1, N2, and
its total capacity is 45×2=90, the size of pipe L2 is Φ15.9/Φ9.5,
and the branch pipe B should be FQZHN-01C.
The downstream inner units of the main pipe L4 are N3, N4, and
its total capacity is 45×2=90, the size of pipe L4 isΦ15.9/Φ9.5,
and the branch pipe D should be FQZHN-01C.
The downstream inner units of the main pipe L5 are N5, N6, and
its total capacity is 45+56=101, the size of pipe L5 isΦ15.9/Φ9.5,
and the branch pipe E should be FQZHN-01C.
Main pipe (Please refer to Fig.4-6 and Table 4-4)
In Fig.4-6, the main pipe L1, the outdoor unit capacity is
26kW, and check the Fig.4-6 to get the size of gas pipe/liquid
pipe is Φ22.2/Φ9.5, and aslo the total equivalent length of liquid
side and gas side pipes is >90m,then check the Table 4-4 to get
the size of gas pipe/liquid pipe is Φ25.4/Φ9.5, and according to
the maximum value principle, it should apply the Φ25.4/Φ9.5.
Allowable length and altitude difference of refrigerant pipe
Piping
ŏP
/////+a+b+c+d+e+f
ŏP
L1+L2+L3+L4+L5+f(The first connect methond)
Drop Height
Pipe Length
Total Pipe Length(Actual)
Maximum
Piping(L)
table 4-11
Pimitted value
Actual Length
or L1+L3+L5+f(The second connect methond)
Equivalent Length
ŏP
Pipe Length(from the first line branch
pipe to furhtest indoor unit)(m)
ŏP
L2+L3+L4+L5+f(The first connect methond)
or L3+L5+f(The second connect methond)
Pipe Length(from the nearest branch
pipe equivalent length(m)
ŏP
DEFGHI
Outdoor Unit up
Indoor Unit-Outdoor
Unit Drop Height(H) Outdoor Unit Down
ŏP
Indoor Unit to Indoor Unit Drop Heihgt(H)
ŏP
ŏP
Note: When the total equivalent piping length of liquid + gas side is ≥90m, it must increase the size of air side main pipe. Besides, according
to the distance of refrigerant pipe and the over matched state of inner unit, when the capacity is decreasing it still can increase the gas side
main pipe size.
The first cennect methond
Pipe Length(from the nearest branch pipe equivalent length
D
/
$
Maximum pipe equivalent length
The first line Branch Pipe
/
(from the first line branch pipe) Maximum pipe equivalent length
/
/
E
/
(
'
&
%
F
Indoor Unit
G
H
I
Indoor Unit to Indoor
Unit Drop Heihgt
Drop HEIGHT between indoor unit and uutdoor unit
Outdoor unit
Fig.4-7
installation manual
7
The second cennect methond
Pipe Length(from the nearest branch
pipe equivalent length
1
D
Maximum pipe equivalent length
1
%
E
(from the first line branch pipe)
Maximum pipe equivalent length
/
/
$
/
F
1
/
The first line Branch Pipe
1
'
&
G
/
(
Indoor Unit to Indoor Unit Drop Heihgt
Drop HEIGHT between indoor unit and uutdoor unit
Outdoor unit
I
H 1
1
Indoor unit
Fig.4-8
4.7 Remove Dirt or Water in the Piping
Make sure there is no any dirt or water before connectiong
the piping to the outdoor units.
Wash the piping with high pressure nitrogen, never use
refrigerant of outdoor unit.
4.10 Refrigerant Amount to be Added
Calculate the added refrigerant according to the diameter and the
length of the liquid side pipe of the outdoor unit/indoor unit
connection.
When the outdoor unit connects 1 indoor unit:
Table 4-12
4.8 Airtight Test
Charge pressured nitrogen after connecting indoor/outdoor unit
piping to do airtight test.
Liquid Side Piping
Diameter
Refrigerant to be Added
Permeter Piping
Φ6.4
0.022kg
CAUTION
0.057kg(>22.4kW)
Φ9.5
0.054kg(≤22.4kW)
1. Pressured nitrogen [ 4.3MPa (44kg/cm 2) for R410A] should be
used in the airtight test.
2. Tighten high pressure/low pressure valves before
applying pressured nitrogen.
Φ12.7
0.110kg
Φ15.9
0.170kg
3. Apply pressure from air vent mouth on the hight pressure/
low pressure valves.
Φ19.1
0.260kg
4. The high pressure/low pressure valves are closed when
applying pressured nitrogen.
Φ22.2
0.360kg
5. The airtight test should never use any oxygen,
flammable gas or poisonous gas.
NOTE
Additional refrigerant volume of divergent pipe is 0.1kg
per item (Consider the liquid side of divergent pipe only)
4.9 Air Purge with Vacuum Pump
Using vacuum pump to do the vacuum,never using refrigerant to
expel the air.
Vacuuming should be done from both liquid side and gas side
simultaneously.
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8
5.
ELECTRICAL WIRING
CAUTION
●
●
●
●
●
●
●
Design a dedicated power supply for the indoor unit and outdoor unit.
If the power supply uses a branch loop, install an electricity leakage protector and a manual switch.
The power supply, electric leakage protectors, and manual switches of the indoor units that connect to the same
outdoor unit must be universal. Use the same loop for the indoor unit power connect to the same outdoor unit
must be universal. Use the same loop for the indoor unit power supplies in the same system. Power on/off at the
same time.
Incorporate the outdoor unit and indoor unit connection wiring system and refrigerant pipe system for the same
system.
To reduceinterference, use a three-core shielded twisted pair as the outdoor unit signal cable. Do not use a
multi-core cable.
Complete wiring according to national electrical standards.
Employ an electrical engineer for wiring.
Outdoor power supply
Switch
Fuse
Outdoor unit
Power supply for the outdoor unit monitor
A B C N
K1 K2 E O A E
X Y E P Q E
Outdoor unit monitor
(Optional)
L N
K1 K2 E
Power supply for the central indoor
unit controller
central indoor unit
controller(Optional)
L N
Digital ammeter power supply
X Y E
Digital ammeter
(Optional)
O A E
L N
Use a shielded cable and ground
the shielding layer
L N
PQE
PQE
L N
Switch
Fuse
L N
Fuse
PQE
L N
Indoor unit
Indoor unit
Indoor unit
Fuse
PQE
Indoor unit
Fuse
Outdoor power
supply
Distribution box
Distribution box
Distribution box
Distribution box
Fig.5-1
200/224/260 Three-phase electrical control system connection of the outdoor unit
CAUTION
An incorrect connection configuration may damage the compressor or other components.
PQE is a signal cable, which must be connected to a weak current. Do not connect it to strong current.
All wiring terminals must be securely fixed. The grounding wire must be grounded as required.
After connecting to the connector base, the power cable must be securely fixed.
After all wires are connected, check the correctness all components before powering on.
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9
Outdoor
unit
PQE
Note: The parts in the dotted line box are optional.Contact
the local distributor to purchase them if required.
Use a shield cable and
ground the shielding layer.
Indoor unit
Indoor unit
PQE
Indoor unit
PQE
Indoor unit
PQE
PQE
Add a build-out resistor
at the P/Q end of the last
indoor unit only.
Build-out
resistor
Wired Remote
controller control
Fig. 5-2
Wiring the indoor unit and outdoor unit control
CAUTION
When the power cable is parallel to the signal cable, insert electric wires in their respective electric wire pipes
and reserve a proper inter-wire distance. (distance between power cables: lower than 10 A –300 mm; lower
than 50 A – 500 mm)
Use a three-core shielded cable as the indoor/outdoor unit signal cable, and ground the shielding layer as
required.
The display box, remote control, and build-out resistor are accessories for the indoor unit. The wired controller
is optional. To purchase a wired controller, contact your local distributor.
5.1 Outdoor Unit Wiring
The Specification of Power
Functions of Outdoor Unit Wiring Terminals
Power(kW/h)
Table 5-1
93KЊ+]
Specifications
$
%
&
1
Outdoor
unit power
XT2
93KЊ+]
Power Wiring
Size(mm²)
Fuse (A)
5x6.0
Power Supply
Indoor unit and outdoor unit
signal cable(mm2)
(Weak current signal cable)
4(
..(2$( ;<(3
Outdoor unit
monitor
Digital
ammeter
Central indoor
unit controller
Indoor and outdoor
unit communication
Note:Use a three-core shielded cable,
and ground the shielding layer
Fig. 5-3
Three-core shielded cable 3x0.75
CAUTION
Equipment complying with IEC 61000-3-12.
A disconnection device having an air gap contact separation
in all active conductors should be incorporated in the fixed
wiring according to the National Wiring Regulation.
The reserved function is indicated in broken line table,users
can select it when necessary.
Indoor/Outdoor Unit Signal Wire
Connect the wire according to their numbers.
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10
Wrong connection may cause malfunction .
NOTE
Wiring Connection
The wire diameter and continuous length is under the
condition that the voltage vibration is within 2%. If the
continuous length is exceed showing value, choose the
wire diameter follow relevant regulation.
Seal the wiring connection with the insulation material , or the
condensing dew will be caused.
NOTE
The air-conditioners can connect with Central Control Monitor
(CCM). Before operation, please wiring correctly and set system
address and network address of indoor units
Indoor unit power supply wiring
Indoor Power Supply
Circuit Breaker
Manual swtich
5.2 Indoor Unit Wiring
Wire Distribution Box
Power Supply
Table 5-2
Capicity(kW)
1.8~16
Indoor Unit
220-240V 1Ph~ 50Hz
Specifications
Indoor Unit
Power
208-230V 1Ph~ 60Hz
Fig. 5-5
Power Wiring
Size(mm²)
3x2.5
CAUTION
Circuit Breaker (A)
16
Indoor Unit /Outdoor Unit
Signal Wire (mm2)
(Weak electric signal)
Three-core shielded wire
3x0.75
1. Refrigerant piping system, indoor unit-indoor unit connection
signal wires and indoor unit-outdoor unit connection singal wire
are in the same system.
2. When power cord is parallel with signal wire, please put them
into separate wire distribution pipes, and leave a proper distance.
(Reference distance: It is 300mm when current capacity of
power cord is less than 10A, or 500mm when 50A).
L N
X Y E
GRAY
BLACK
BLACK
YELLOW
BLUE
WHITE
Single phase indoor unit
Please use shield wire as indoor unit/outdoor unit signal wire.
Display
board
Indoor/Outdoor unit signal wire wiring
Outdoor Unit
P Q E
Y/G
XT3
XT1
Power Supply
Close end of the connection shielded wire
Wire controller
Indoor/Outdoor
Unit Signal Wire
To Central Control To Outdoor
Monitor (CCM)
COMM.BUS
COMM. BUS
To wire controller
The reserved wire control
function is indicated in broken
line table, users can purchase
Please use three-core shielded wire, and the wire controller when
connect the shielded layer to Grounding necessary.
(open)
Fig. 5-4
1. Signal wire is three-core, polarized wire. Use three-core shield
wire to prevent interference. The grounding method now is
grounding the closed end of the shield wire and opening
(insulating) at the end. Shield is to be grounded.
2. The control between outdoor unit and indoor unit is BUS type.
Addresses is set on field during the installation.
in broken line table, users can purchase the wire
controller when necessary
Fig. 5-6
6.
TEST RUNNING
Operate according to "gist for test running" on the electric control box
cover.
CAUTION
Indoor/Outdoor unit signal wire is low voltage circuit. Do not
let it touch the high voltage power wire and put it to gather
with power cord in the same wire distribution pipe.
CAUTION
Test running can not start until the outdoor unit has been
connected to the power for 12hr.
Test running can not start until all the valves are affirmed
open.
Never make the forced running. (Or the protector sits back,
danger will occur.)
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11
7.
PRECAUTIONS ON REFRIGERANT
LEAKAGE
This air conditioner(A/C) adopts inncouous and nonflammable
refrigerant. The locating room of the A/C should big engough
that any refrigerant leakage is unable to reach critical thickness.
So certain esssential action can be taken on time.
Critical thickness------the Max. thickness of Freon without any
harm to person.
Refrigerant critical thickness: 0.44[kg/m3] for R410A.
Confirm the critical thickness through follow steps, and take
necessary actions.
1. Calculate the sum of the charge volume (A[kg]) Total
Refrigerant volume of 10HP=factory refrigerant
volume + superaddition
2. Calculate the indoor cubage (B[m3]) (as the minimum
cubage.
3. Calculate the refrigerant thickness
A[kg]
İcritical thickness
B[m3]
Counter measure against over high thickness
1. Installmechanicalventilator to reduce the refrigerant thickness
under critical level. (ventilate regularly)
2. Install leak alarm facility related to mechanical ventilator if
you can not regularly ventilate.
Outdoor unit
Indoor unit
Room full of leak refrigerant
(All refrigerant has run up)
b. Leak alarm related to mechanical ventilator
Indoor unit
(Leak hunting siren should be installed in
places easily keep refrigerant)
A. Ventilation
peristome
Fig. 7-1
NOTE
Please press “constraint cool” button to carry out refrigerant
recycling process. Keep the low pressure above 0.2MPa, other
wise compressor may be burnt out.
8.
TURN OVER TO CUSTOMER
The owner's manual of indoor unit and owner's manual of
outdoor or unit must be turned over to the customer. Explain
the contents in the owner’s manual to the customers in details.
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12
MD12I-051FW
202000172125