RAS-13UKV-E
.ILE NO. A02-001
SPLIT TYPE
RAS-13UKV-E
RAS-13U AV-E
PRINTED IN JAPAN, Mar.,2002 ToMo
CONTENTS
1. SPECIFICATIONS ..................................................................................... 3
2. REFRIGERANT R410A ............................................................................. 5
3. CONSTRUCTION VIEWS ........................................................................ 13
4. WIRING DIAGRAM.................................................................................. 15
5. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 17
6. REFRIGERANT CYCLE DIAGRAM ........................................................ 18
7. CONTROL BLOCK DIAGRAM ................................................................ 20
8. OPERATION DESCRIPTION................................................................... 22
9. INSTALLATION PROCEDURE................................................................ 35
10. HO W TO DIA GNOSE THE TROUBLE...................................................... 44
11. HO W TO REPLACE THE MAIN P AR TS................................................... 63
12. EXPLODED VIEWS AND PARTS LIST ................................................... 74
– 2 –
1. SPECIFICATIONS
1-1. Specifications
RAS-13UKV-E/RAS-13UAV-E
Unit model Indoor
Outdoor
Current limited
Cooling capacity (kW)
Cooling capacity range (kW)
Heating capacity (kW)
Heating capacity range (kW)
Power supply
Electric Indoor Operation mode
characteristics
Outdoor Operation mode
COP (Cooling/Heating)
Operating noise Indoor High (Cooling / Heating) (dB•A)
Outdoor (Cooling / Heating) (dB•A)
Indoor unit Unit model
Dimension Height (mm)
Net weight (kg)
Fan motor output (W)
Air flow rate (Cooling / Heating) (m³/h)
Outdoor unit Unit model
Dimension Height (mm)
Net weight (kg)
Compressor Motor output (W)
Fan motor output (W)
Air flow rate (Cooling / Heating) (m³/h)
Piping Type
connection
Refrigerant Name of refrigerant
Wiring connection Power supply
Usable temperature range Indoor (Cooling / Heating) (°C)
Accessory Indoor unit Installation plate
Indoor unit Liquid side
Outdoor unit Liquid side
Maximum length (Per unit) (m)
Maximum chargeless length (m)
Maximum height difference (m)
Weight (kg)
Interconnection
Outdoor unit Drain nipple
Running current (A)
Power consumption (W)
Power factor (%)
Running current (A)
Power consumption (W)
Power factor (%)
Starting current (A)
Medium (Cooling / Heating) (dB•A)
Low (Cooling / Heating) (dB•A)
Width (mm)
Depth (mm)
Width (mm)
Depth (mm)
Type
Model
Gas side
Gas side
Outdoor (Cooling / Heating) (°C)
Wireless remote controller
Remote controller holder
Flat head wood screw
Purifying filter
Zeolite filter
Batteries
Mounting screw
Installation manual
Owner’s manual
Twin rotary type with DC-inverter variable speed control
220 – 230 –240V – 1Ph – 50/60Hz
Cooling Heating
0.15 0.15
30 30
87 87
Cooling Heating
5.07 / 4.84 / 4.63 5.40 / 5.16 / 4.94
1060 1130
95 95
3 Wires : includes earth (Outdoor)
• The specifications may be subject to change without notice for purpose of improvement.
RAS-13UKV-E
RAS-13UAV-E
—
3.5
0.9 – 4.0
4.2
0.9 – 6.0
5.55 / 5.31 / 5.09
3.21 / 3.62
39 / 39
33 / 34
26 / 28
48 / 50
RAS-13UKV-E
275
790
208
10
30
530 / 620
RAS-13UAV-E
550
780
270
38
750
DA91A1F-44F
43
2410 / 2410
Flare connection
Ø6.35
Ø9.52
Ø6.35
Ø9.52
15
15
10
R410A
0.8
4 Wires : includes ear th
21 – 32 / 0 – 28
10 – 43 / –10 – 24
1
1
1
2 (Ø3.1 x 16L)
1
1
2
6 (Ø4 x 25L)
1
1
1
– 3 –
1-2. Operation Characteristic Curve
<Cooling> <Heating>
7
6
RAS-13UKV-E
5
4
3
Current (A)
2
• Conditions
Indoor : DB 27˚C/WB 19˚C
Outdoor : DB 35˚C
1
Air flow : High
Pipe length : 5m
230V
0
0 20 40 60 80 100
Compressor speed (rps)
7
6
RAS-13UKV-E
5
4
3
Current (A)
2
• Conditions
Indoor : DB 20˚C
Outdoor : DB 7˚C/WB 6˚C
1
Air flow : High
Pipe length : 5m
230V
0
0 20 40 60 80 100
Compressor speed (rps)
1-3. Capacity Variation Ratio According to Temperature
<Cooling> <Heating>
105
100
95
90
85
80
75
70
Capacity ratio (%)
65
60
55
50
32 34
Current Limited Start
RAS-13UKV-E
• Conditions
Indoor : DB27˚C/WB19˚C
Indoor air flow : High
Pipe length 5m
36 38 40 4233 35 37 39 41 43
Outdoor temp. (˚C)
120
110
100
90
80
70
60
50
Capacity ratio (%)
40
30
20
10
0
–10–9–8–7–6–5–4–3–2–1012345678910
RAS-13UKV-E
• Conditions
Indoor : DB 20˚C
Indoor air flow : High
Pipe length : 5m
Outdoor temp. (˚C)
Capacity ratio : 100% = 3.5 kW (RAS-13UKV-E)
*
– 4 –
2. REFRIGERANT R410A
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the
air conditioner using the new refrigerant during
installation work or servicing time.
The next section describes the precautions for air
conditioner using the new refrigerant. Conforming to
contents of the next section together with the
general cautions included in this manual, perform
the correct and safe work.
2-1. Safety During Installation/Servicing
As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following
precautions into consideration.
(1) Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A.
If other refrigerant than R410A is mixed, pressure in the refrigeration cycle becomes abnormally high, and it may cause personal injury, etc.
by a rupture.
(2) Confirm the used refrigerant name, and use
tools and materials exclusive for the refrigerant
R410A.
The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air conditioner using R410A as refrigerant. To prevent
mischarging, the diameter of the service port
differs from that of R22.
(3) If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
(4) When installing or removing an air conditioner,
do not allow air or moisture to remain in the
refrigeration cycle. Otherwise, pressure in the
refrigeration cycle may become abnormally high
so that a rupture or personal injury may be
caused.
(5) After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.
If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater,
space heater, etc., a poisonous gas may occur.
(6) When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentration
does not exceed the marginal lev el.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.
(7) Be sure to carry out installation or removal
according to the installation manual.
Improper installation may cause refrigeration
trouble, water leakage, electric shock, fire, etc.
(8) Unauthorized modifications to the air conditioner
may be dangerous. If a breakdown occurs
please call a qualified air conditioner technician
or electrician.
Improper repair’s may result in water leakage,
electric shock and fire, etc.
2-2. Refrigerant Piping Installation
2-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant must be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants .
(1) Copper Pipes
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m. Do not use copper
pipes having a collapsed, deformed or discolored portion (especially on the interior surface).
Otherwise, the expansion v alve or capillary tube
may become bloc ked with contaminants.
As an air conditioner using R410A incurs
pressure higher than when using R22, it is
necessary to choose adequate materials.
Thicknesses of copper pipes used with R410A
are as shown in Table 2-2-1. Never use copper
pipes thinner than 0.8 mm even when it is
available on the market.
– 5 –
Table 2-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
Nominal diameter
1/4
3/8
1/2
5/8
(2) Joints
For copper pipes, flare joints or soc ket joints are
used. Prior to use , be sure to remove all contaminants.
a) Flare Joints
Flare joints used to connect the copper pipes
cannot be used for pipings whose outer
diameter exceeds 20 mm. In such a case,
socket joints can be used.
Sizes of flare pipe ends, flare joint ends and
flare nuts are as shown in Tables 2-2-3 to 22-6 below .
Outer diameter (mm)
6.35
9.52
12.70
15.88
R410A R22
0.80 0.80
0.80 0.80
0.80 0.80
1.00 1.00
b) Socket Joints
Socket joints are such that they are brazed
for connections, and used mainly for thick
pipings whose diameter is larger than 20 mm.
Thicknesses of socket joints are as shown in
Table 2-2-2.
Table 2-2-2 Minimum thicknesses of socket joints
Nominal diameter
1/4
3/8
1/2
5/8
Reference outer diameter of
copper pipe jointed (mm)
2-2-2. Processing of Piping Materials
When performing the refrigerant piping installation,
care should be taken to ensure that water or dust
does not enter the pipe interior, that no other oil
other than lubricating oils used in the installed air
conditioner is used, and that refrigerant does not
leak. When using lubricating oils in the piping
processing, use such lubricating oils whose water
content has been removed. When stored, be sure to
seal the container with an airtight cap or any other
cover.
Minimum joint thickness
(mm)
6.35
9.52
12.70
15.88
(1) Flare Processing Procedures and Precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe
so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs,
refrigerant leakage may occur. Carefully
remove all b urrs and clean the cut surface
before installation.
c) Insertion of Flare Nut
0.50
0.60
0.70
0.80
– 6 –
d) Flare Processing
Make certain that a clamp bar and copper
pipe have been cleaned.
By means of the clamp bar, perform the flare
processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according
to the type of flare tool. When using a
conventional flare tool, be sure to secure
“dimension A” by using a gauge for size
adjustment.
Table 2-2-3 Dimensions related to flare processing for R410A
ØD
A
Fig. 2-2-1 Flare processing dimensions
Nominal
diameter
1/4
3/8
1/2
5/8
Nominal
diameter
1/4
3/8
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
Flare tool for R410A
clutch type
0 to 0.5 1.0 to 1.5 1.5 to 2.0
0 to 0.5 1.0 to 1.5 1.5 to 2.0
0 to 0.5 1.0 to 1.5 2.0 to 2.5
0 to 0.5 1.0 to 1.5 2.0 to 2.5
Table 2-2-4 Dimensions related to flare processing for R22
A (mm)
A (mm)
Outer
diameter
(mm)
6.35
9.52
Thickness
(mm)
0.8
0.8
Flare tool for R410A
clutch type
0 to 0.5 0.5 to 1.0 1.0 to 1.5
0 to 0.5 0.5 to 1.0 1.0 to 1.5
Conventional flare tool
Clutch type Wing nut type
Conventional flare tool
Clutch type Wing nut type
1/2
5/8
Nominal
diameter
1/4
3/8
1/2
5/8
12.70
15.88
0.8
1.0
0 to 0.5 0.5 to 1.0 1.0 to 2.0
0 to 0.5 0.5 to 1.0 1.0 to 2.0
Table 2-2-5 Flare and flare nut dimensions for R410A
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
ABCD
9.1 9.2 6.5 13
13.2 13.5 9.7 20
16.6 16.0 12.9 23
19.7 19.0 16.0 25
Dimension (mm)
– 7 –
Flare nut
width
(mm)
17
22
26
29
Table 2-2-6 Flare and flare nut dimensions for R22
Nominal
diameter
1/4
3/8
1/2
5/8
3/4
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
19.05
Thickness
(mm)
0.8
0.8
0.8
1.0
1.0
˚ to 46
45
Dimension (mm)
Flare nut
width
ABCD
9.0 9.2 6.5 13
13.0 13.5 9.7 20
16.2 16.0 12.9 20
19.7 19.0 16.0 23
23.3 24.0 19.2 34
˚
B A
D
C
(mm)
17
22
24
27
36
Fig. 2-2-2 Relations between flare nut and flare seal surface
(2) Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions
do not have any scar or dust, etc.
b) Correctly align the processed flare surface
with the union axis.
c) Tighten the flare with designated torque by
means of a torque wrench. The tightening
torque for R410A is the same as that for
conventional R22. Incidentally, when the
torque is weak, the gas leakage may occur.
Table 2-2-7 Tightening torque of flare for R410A [Reference values]
Nominal
diameter
Outer
diameter
(mm)
Tightening torque
N•m (kgf•cm)
43˚ to 45
˚
When it is strong, the flare nut may crack and
may be made non-removable. When choosing the tightening torque, comply with values
designated by manufacturers . Table 2-2-7
shows reference v alues.
NOTE :
When applying oil to the flare surface, be sure to use
oil designated by the manufacturer. If an y other oil is
used, the lubricating oils may deteriorate and cause
the compressor to burn out.
Tightening torque of torque
wrenches available on the market
N•m (kgf•cm)
1/4
3/8
1/2
5/8
6.35
9.52
12.70
15.88
14 to 18 (140 to 180)
33 to 42 (330 to 420)
50 to 62 (500 to 620)
63 to 77 (630 to 770)
– 8 –
16 (160), 18 (180)
42 (420)
55 (550)
65 (650)
2-3. Tools
2-3-1. Required Tools
The service port diameter of pac ked valve of the outdoor unit in the air conditioner using R410A is changed to
prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions
and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.
The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
(1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
(2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
(3) Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
Conventional air
conditioner installation
Whether new equipment
can be used with
conventional refrigerant
¡
(Note 1)
*
X
X
¡
¡
X
¡
X
No.
1
2
3
4
5
6
7
8
9
10
Used tool
Flare tool
Copper pipe gauge for
adjusting projection
margin
Torque wrench
(For Ø12.7)
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder
Usage
Pipe flaring
Flaring by
conventional flare
tool
Connection of flare
nut
Evacuating,
refrigerant charge,
run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
R410A
Whether
conventional
equipment
can be used
(Note 1)
*
(Note 1)
*
air conditioner installation
Existence of
new equipment
for R410A
(Note 2)
X
X
X
X
X
X
X
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.
General tools (Conventional tools can be used.)
In addition to the above e xclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
(1) Vacuum pump
Use vacuum pump by
attaching vacuum pump adapter.
(2) Torque wrench (For Ø6.35, Ø9.52)
(3) Pipe cutter
(4) Reamer
(5) Pipe bender
(6) Level vial
(7) Screwdriver (+, –)
(8) Spanner or Monkey wrench
(9) Hole core drill (Ø65)
(10) Hexagon wrench
(Opposite side 5mm)
(11) Tape measure
(12) Metal saw
Also prepare the following equipments for other installation method and run chec k.
(1) Clamp meter
(2) Thermometer
(3) Insulation resistance tester
(4) Electroscope
– 9 –
2-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps .
Recover the refrigerant, and check no refrigerant
remains in the equipment.
Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.
Connect the charge hose to the vacuum pump
adapter.
Open fully both packed valves at liquid and gas
sides.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.
Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.
Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.
(For refrigerant charging, see the figure below.)
(1) Never charge refrigerant exceeding the specified amount.
(2) If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
(3) Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high
pressure, and may cause a rupture or personal injury.
(INDOOR unit)
(Liquid side)
(OUTDOOR unit)
Opened
Refrigerant cylinder
(With siphon pipe)
Check valve
Open/Close valve
for charging
Electronic balance for refrigerant charging
Fig. 2-4-1 Configuration of refrigerant charging
(Gas side)
Closed
Service port
– 10 –
(1) Be sure to make setting so that liquid can be charged.
(2) When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.
[ Cylinder with siphon ] [ Cylinder without siphon ]
Gauge manifold
OUTDOOR unit
Refrigerant
cylinder
Gauge manifold
OUTDOOR unit
cylinder
Refrigerant
Electronic
balance
R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the composition of the charged refrigerant changes and the
characteristics of the equipment varies.
2-5. Brazing of Pipes
2-5-1. Materials for Brazing
(1) Silver brazing filler
Silver brazing filler is an alloy mainly composed
of silver and copper. It is used to join iron,
copper or copper alloy, and is relatively expensive though it excels in solderability.
Electronic
balance
Siphon
Fig. 2-4-2
(1) Phosphor bronze brazing filler tends to react
with sulfur and produce a fragile compound
water solution, which may cause a gas
leakage. Therefore, use any other type of
brazing filler at a hot spring resort, etc., and
coat the surface with a paint.
(2) When performing brazing again at time of
servicing, use the same type of brazing filler.
(2) Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally used
to join copper or copper alloy.
(3) Low temperature brazing filler
Low temperature brazing filler is generally called
solder, and is an alloy of tin and lead. Since it is
weak in adhesive strength, do not use it for
refrigerant pipes.
2-5-2. Flux
(1) Reason why flux is necessary
• By removing the oxide film and any foreign
matter on the metal surface, it assists the flo w
of brazing filler.
• In the brazing process, it prevents the metal
surface from being oxidiz ed.
• By reducing the brazing filler’s surface tension,
the brazing filler adheres better to the treated
metal.
– 11 –
(2) Characteristics required for flux
Nitrogen gas
cylinder
Pipe
Flow meter
M
Stop valve
From Nitrogen cylinder
Nitrogen
gas
Rubber plug
• Activated temperature of flux coincides with
the brazing temperature.
• Due to a wide effective temperature range, flux
is hard to carbonize.
• It is easy to remove slag after brazing.
• The corrosive action to the treated metal and
brazing filler is minimum.
• It excels in coating performance and is harmless to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
(3) Types of flux
• Noncorrosive flux
Generally, it is a compound of borax and boric
acid.
It is effective in case where the br azing temperature is higher than 800°C.
• Activated flux
Most of fluxes generally used for silver brazing
are this type.
It features an increased o xide film remo ving
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
(4) Piping materials for brazing and used braz-
ing filler/flux
2-5-3. Brazing
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
In order to prevent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow .
Never use gas other than Nitrogen gas.
(1) Brazing method to prevent oxidation
1) Attach a reducing valve and a flow-meter to
the Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe for
Nitrogen in order to prevent backflow of the
Nitrogen gas.
4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
5) Adjust the flow rate of Nitrogen gas so that it
is lower than 0.05 m3/Hr or 0.02 MPa (0.2kgf/
cm2) by means of the reducing valv e.
6) After performing the steps above, keep the
Nitrogen gas flowing until the pipe cools
down to a certain extent (temperature at
which pipes are touchable with hands).
7) Remove the flux completely after brazing.
Copper - Copper
Copper - Iron
(1) Do not enter flux into the refrigeration cycle.
(2) When chlorine contained in the flux remains
(3) When adding water to the flux, use water
(4) Remove the flux after brazing.
Piping
material
Used brazing Used
filler flux
Phosphor copper Do not use
Silver Paste flux
Iron - Iron
Silver Vapor flux
within the pipe, the lubricating oil deteriorates. Therefore, use a flux which does not
contain chlorine.
which does not contain chlorine (e.g. distilled
water or ion-exchange water).
Fig. 2-5-1 Prevention of oxidation during brazing
– 12 –
3-1. Indoor Unit
RAS-13UKV-E
Air inlet Air filter Heat exchanger
275
3. CONSTRUCTION VIEWS
790
208
606
Air outlet
790
120 590 80
Hanger
Drain hose (0.54m) Connecting pipe (0.43m)
Hanger
321
(Flare Ø6.35)
Connecting pipe (0.33m)
(Flare Ø9.52)
620
235 235
For stud bolt (Ø8 to Ø10)
For stud bolt (Ø6)
Minimum
distance
to wall
120 or more
275
26
190 4540
Minimum
distance
to wall
120 or more
Minimum
distance
to ceiling
66 or
more
215215
Hanger
45
Front panel
Back body
48
Knock out system
60
48
6
Knock out system
32
HangerHanger
90 150 160 160 150
Center line
– 13 –
40
32
90
Installation plate outline
3-2. Outdoor Unit
RAS-13UAV-E
Hanger
A leg part
310
296
(ø6 hole pitch)
(Anchor bolt long hole pitch)
B leg part
Ø4.5 embossing (Ø4STS used)
(For sunshade roof attaching)
14749,5
21
540
548
270
Fan guard
600
Ø25 drain hole
115
76
90
Ø11 x 17U-shape hole
50
(For Ø8-Ø10 anchor bolt)
8-Ø6 hole
(For fixing outdoor unit)
16
Ø11 x 17 long hole
(For Ø8-Ø10 anchor bolt)
115.5
Valve cover
Charging
port
157
59
21
54
Z
Connecting pipe port
(Pipe dia.Ø6.35)
Connecting pipe port
(Pipe dia.Ø9.52)
4 x Ø11 x 17U-shape hole
(For Ø8-Ø10 anchor bolt)
Intake
100 or
C
310
more
200 or more
8
Mounting dimensions of anchor bolt
600
50 or
more
D
Intake
Outside line
of product
Outlet
B
780 61
Z
view
A
250 or more
(Minimum distance
from wall)
4 x Ø11 × 17 long hole
(For Ø8-Ø10 anchor bolt)
322
Earth terminal
Detailed A leg part
50
36
11
310
296
R5.5
11
310
296
36
50
Detailed B leg part
600
2-Ø6 hole
2-Ø6 hole
600
R15
Outside line
of product
Outside line
of product
R15
R5.5
– 14 –
4-1. Indoor Unit
RAS-13UKV-E
COLOR IDENTIFICATIONBLU
BLK : BLACK
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
GRN & YEL: GREEN & YELLOW
CN01
(BLU)
BLK
121
BLK
HEAT EXCHANGER
SENSOR (TC)
BLK
BLK
THERMO SENSOR
(TA)
CN25
(WHI)
1
2
3
4
5
6
7
8
9
AND INDICATING PARTS
10
INFRARED RAYS RECEIVING
MCC-861
11
10
11
BLU
1
BLU
2
BLU
3
BLU
4
BLU
5
BLU
6
BLU
7
BLU
8
BLU
9
BLU
WHI
CN03
(WHI)
121
CN13
(WHI)
1
2
3
4
5
6
7
8
9
10
10
11
11
2
2
1
2
3
4
5
6
7
8
9
MAIN P.C. BOARD
1 4
FUSE
F01
T3.15A
AC 250V
MCC-867
4. WIRING DIAGRAM
21 3
WHIBLK
CN23 CN21CN24
3
RED
R04
2
LINE
FILTER
CN08
21 43
HA JEM-A
TERMINAL
BLOCK
GRN & YEL
DB01R05
C03
INDOOR
UNIT
DC5V
DC12V
OUTDOOR
UNIT
CN10
6
(WHI)
1
1
3
3
4
4
5
5
66
5
CN07
(WHI)
1
1
2
2
CIRCUIT
3
3
4
4
POWER SUPPLY
5
5
FAN MOTOR
RED
BLK
WHI
DC MOTOR
YEL
BLU
WHI
1
YEL
YEL
YEL
YEL
1
2
2
3
3
4
4
5
5
LOUVER MOTOR
T a ble 4-1-1 Simple check for failure diagnosis
Check items
OPERATION indicator
1
Terminal block
2
Fuse 3.15A
3
DC 5V
4
DC 12V
5
DC 325V
6
(DC310 to 340V)
Check to see if the OPERATION indicator goes on and off when the main switch or
breaker is turned on.
(Check the primary and secondary voltage of the transformer.)
Check the power supply voltage between and . (Refer to the name plate.)
(Check the primary and secondary voltage of the transformer.)
Check the fluctuating voltage between
Check to see if the fuse blows out.
(Check the R04 of the varistor.)
Check the voltage at the No.4 pin on CN13 connector of the infrared receiver.
(Check the transformer and the power supply circuit of the rated voltage.)
Check for voltage at the white lead of the louver motor.
(Check the transformer and the power supply circuit of the rated voltage.)
Check for voltage at the No.1 pin on CN10 connector.
(Check the DB01, R05 and C03.)
Refer to the service data for the detailed failure diagnosis.
– 15 –
Diagnosis result
and . (DC 15 to 60V)
4-2. Outdoor Unit
RAS-13UAV-E
PULSE
MODULATING
VAL VE
TE
THERMOSTAT
FOR
COMPRESSOR
121
2
121
2
REACTOR
ORN
P10
G
E
A
CONVERTER
MODULE
DB01
BRW
BU
EU
BV
EV
BW
EW
BX
IGBT MODULE
BY
BZ
Q200
BLU P18
112
2
CN600
CN500
P07
P08
P09
P19
P20
P17
TD
11223
CT
POEWR RELA Y
ELECTRONIC
STARTER
P.C. BOARD
(MCC-813)
P21
P22
P23
3
TO
RED
WHI
BLK
TS
112
2
C12 C13 C14
1
1
2
2
3
3
COMPRESSOR
11223311223
CN701
RELAY
CM
COIL for
4-WAY VALVE
3
BLK
P06 CN703CN603CN602CN601
V ARIST OR
Q300
WHI
112
SURGE
ABSORBER
F04
FUSE
T3.15A
PMV
YEL
ORN
BLU
RED
GRY
3
44556
2
3
F01
FUSE
T25A
RED : RED ORN : ORANGE
WHI : WHITE PUR : PURPUL
BLK : BLACK YEL : YELLOW
BLU : BLUE GRY : GRY
BRW: BROWN PNK : PINK
6
P01
BLK
ORN
P03
WHI
P02
P11
P12
P13
P14
CN300
CN301
IGBT : Insulated Gate Bipolar Transistor
COLOR IDENTIFICATIONBLU
121
1
1
2
2
3
3
1
1
2
2
3
3
4
4
5
5
N
L
3
2
1
2
REACTOR
PUR
RED
WHI
BLK
YEL
PNK
GRY
F AN MOTER
FM
POWER
SUPPLY
220-240V~
50/60Hz
TO
INDOOR
UNIT
– 16 –
5-1. Indoor Unit
RAS-13UKV-E
5. SPECIFICATIONS OF ELECTRICAL PARTS
No.
1
Fan motor (for indoor)
2
Thermo. sensor (TA-sensor)
3
DC-DC transformer (T01)
4
Microcomputer
Heat exchanger temp. sensor
5
(TC-sensor)
6
Line filter (L01)
7
Diode (DB01)
8
Capacitor (C03)
9
Fuse (F01)
10
Power supply IC (IC01)
11
Varistor (R21, R109)
12
Resistor (R01)
13
Louver motor
Parts name
5-2. Outdoor Unit
RAS-13UAV-E
Type
ICF-340-30-2
( – )
SWT-70
µPD780024AGK
( – )
SS11V-06270
D3SBA60
KMH450VNSN120M25C
FCU 250V, 3.15A
STR-L472
15G561K
RF-5TK4R7
MP24GA
Specifications
DC340V, 30W
10kΩ at 25°C
DC390V, Secondary DC15V, 12V, 7V
10kΩ at 25°C
27mH, AC0.6A
4A, 600V
120µF, 450V
T3.15A, 250V
560V
4.7Ω, 5W
Output (Rated) 1W, 16poles, 1phase DC12V
No.
SC coil
1
(Noise filter)
2
DC-DC transformer
3
Reactor
4
Outside fan motor
Suction temp. sensor
5
(TS sensor)
Discharge temp. sensor
6
(TD sensor)
Outside air temp. sensor
7
(TO sensor)
Heat exchanger temp. sensor
8
(TE sensor)
9
Terminal block (6P)
10
Fuse
11
Electrolytic capacitor
12
Transistor module
Parts name
L03
L01
Model name
ADR2520-R15TB
ADR2516-0R6TB
SWT-43
CH-38
ICF-140-43-1
(Inverter attached)
(Inverter attached)
(Inverter attached)
(Inverter attached)
——
For protection of switching power source
For protection of inverter input overcurrent
LLQ2G501KHUATF , 400LISN500K35F
6MBI25GS-060-01 or 6MBI25GS-060-01A
Rating
15A, 0.6mH
20A, 150µH
Primary side DC280V, Secondary side
7.5V x 1, 13V x 1, 26.5V x 3, 16V x 1, 15V x 1
L=10mH, 16A x 2
DC140V, 43W
10kΩ (25°C)
62kΩ (20°C)
10kΩ (25°C)
10kΩ (25°C)
20A, AC250V
3.15A, AC250V
25A, AC250V
500µF, DC400V X 3 pieces
25A, 600V
13
Compressor
14
Compressor thermo.
15
Converter module
DA91A1F-44F
US-622KXTMQO-SS
MP7003
– 17 –
3-phases 4-poles 750W
OFF: 125 ± 4°C, ON: 90 ± 5° C
Diode: 25A, 600V, IGBT: 40A, 600V
6. REFRIGERANT CYCLE DIAGRAM
6-1. Refrigerant Cycle Diagram
RAS-13UKV-E/RAS-13UAV-E
P
Pressure measurement
Gauge attaching port
Vacuum pump connecting port
Deoxidized copper pipe
Outer dia. : 9.52mm
Thickness : 0.8mm
INDOOR UNIT
Indoor heat
exchanger
Cross flow fan
Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm
Sectional shape
of heat insulator
T1
Temp. measurement
Allowable height
difference : 10m
Allowable pipe length
Max. : 15m
4-way valve
(CHV-0213)
TS
Temp. measurement
T2
Muffler
Muffler
TD
Compressor
DA91A1F-44F
Outdoor heat
exchanger
Propeller fan
OUTDOOR UNIT
TO
Split capillary
Ø1.5 x 200
Ø1.5 x 200
TE
Strainer
Pulse modulating
valve at liquid side
(SEV15RC2)
Refrigerant amount : 0.8kg
NOTE :
Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
NOTE :
• The maximum pipe length of this air conditioner is 15 m. The additional charging of refrigerant is unnecessary
because this air conditioner is designed with charge-less specification.
– 18 –
6-2. Operation Data
<Cooling>
Temperature
condition (°C)
Indoor Outdoor
27/19 35/–
Model
name
13UKV-E
Standard
pressure
P (MPa)
0.8 to 1.0
Heat exchanger
pipe temp.
T1 (°C) T2 (°C)
9 to 11 49 to 50
Indoor fan
mode
High
Outdoor fan
mode
High
Compressor
revolution
<Heating>
Temperature
condition (°C)
Indoor Outdoor
20/– 7/6
Model
name
13UKV-E
Standard
pressure
P (MPa)
2.5 to 2.7
Heat exchanger
pipe temp.
T1 (°C) T2 (°C)
42 to 44 0 to 3
Indoor fan
mode
High
Outdoor fan
mode
High
Compressor
revolution
NOTES :
(1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.
(Thermistor themometer)
(2) Connecting piping condition : 5 m
(rps)
77
(rps)
83
– 19 –
7-1. Indoor Unit
RAS-13UKV-E
Heat Exchanger Sensor
7. CONTROL BLOCK DIAGRAM
Indoor Unit Control Panel
M.C.U
Functions
Powerful
Display
Temperature Sensor
Infrared Rays Signal Receiver
Infrared
Rays
Initializing Circuit
36.7kHz
Clock Frequency
Oscillator Circuit
Power Supply
Remote
Controller
Noise Filter
From Outdoor Unit
Circuit
• Louver Control
• 3-minute Delay at Restart for Compressor
• Motor Revolution Control
• Processing
(Temperature Processing)
• Timer
• Serial Signal Communication
Louver ON/OFF Signal
Louver Driver
Serial Signal Transmitter/Receiver
Serial Signal Communication
Operation
Display
Timer
Display
Filter
Sign Display
PRE DEF.
Sign Display
Indoor
Fan Motor
Louver
Motor
REMOTE CONTROLLER
Infrared
Rays
Remote Controller
Operation (START/STOP)
Operation Mode Selection
AUTO, COOL, DRY, HEAT, FAN ONLY
Thermo. Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver AUTO Swing
Louver Direction Setting
ECO
Hi-POWER
– 20 –
RAS-13UAV-E
7-2. Outdoor Unit (Inverter Assembly)
For INDOOR UNIT
220–230–240 V
to 50/60 Hz
MICRO-COMPUTER BLOCK DIAGRAM
MCC813 (P.C.B) OUTDOOR UNIT
Inddor unit
send/receive
circuit
M.C.U
• PWM synthesis function
• Input current release control
Discharge
temp. sensor
• IGBT over-current detect control
• Outdoor fan control
• High power factor correction control
Outdoor air
temp. sensor
– 21 –
Suction temp.
sensor
• Inverter output frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• 4-way valve control
Heat exchanger
temp.sensor
• Signal communication to indoor unit
Rotor position
detect circuit
Rotor position
detect circuit
Gate drive
circuit
Gate drive
circuit
Over current
detect circuit
Over current
sensor
Noise
Filter
High Power
factor Correction
circuit
Input current
sensor
Driver circuit
of P.M.V.
P.M.V.
Clock
frequency
16MHz
Converter
(AC DC)
Relay
circuit
4-way
valve
Over current
sensor
Over current
sensor
Inverter
(DC AC)
Inverter
(DC
AC)
P.M.V : Pulse Modulating Valve
M.C.U : Micro Control Unit
Outdoor
Fan motor
Compressor
8. OPERATION DESCRIPTION
8-1. Outline of Air Conditioner Control
This air conditioner is a capacity-variable type air
conditioner, which uses DC motor for the indoor fan
motor and the outdoor fan motor. And the capacityproportional control compressor which can change
the motor speed in the range from 13 to 110 rps is
mounted. The DC motor drive circuit is mounted to
the indoor unit. The compressor and the inverter to
control fan motor are mounted to the outdoor unit.
The entire air conditioner is mainly controlled by the
indoor unit controller.
The indoor unit controller drives the indoor fan motor
based upon command sent from the remote controller, and transfers the operation command to the
outdoor unit controller.
The outdoor unit controller receives operation
command from the indoor unit side, and controls the
outdoor fan and the pulse modulating valve. (P.M.V)
Besides, detecting rev olution position of the compressor motor, the outdoor unit controller controls
speed of the compressor motor by controlling output
voltage of the inv erter and switching timing of the
supply power (current transfer timing) so that motors
drive according to the operation command. And
then, the outdoor unit controller transfers re versely
the operating status information of the outdoor unit
to control the indoor unit controller.
As the compressor adopts four-pole
brushless DC motor, the frequency of the
supply power from inverter to compressor is
two-times cycles of the actual number of
revolution.
(1) Role of indoor unit controller
The indoor unit controller judges the operation
commands from the remote controller and
assumes the following functions.
• Judgment of suction air temperature of the
indoor heat exchanger by using the indoor
temp. sensor. (TA sensor)
• Temperature setting of the indoor heat exchanger by using heat exchanger sensor
(TC sensor) (Prevent-freezing control)
• Louver motor control
• Indoor fan motor operation control
• LED (Light Emitting Diode) display control
• Transferring of operation command signal
(Serial signal) to the outdoor unit
• Reception of information of operation status
(Serial signal including outside temp. data) to
the outdoor unit and judgment/display of error
(2) Role of outdoor unit controller
Receiving the operation command signal (Serial
signal) from the indoor controller, the outdoor
unit performs its role.
• Compressor operation
control
• Operation control of
outdoor fan motor
• P.M.V . control
• Detection of inverter input current and current
release operation
• Over-current detection and prevention oper ation to IGBT module (Compressor stop function)
• Compressor and outdoor fan stop function
when serial signal is off (when the serial signal
does not reach the board assembly of outdoor
control by trouble of the signal system)
• Transferring of operation information (Serial
signal) from outdoor unit to indoor unit
• Detection of outdoor temperature and operation revolution control
• Defrost control in heating operation (Temp.
measurement by outdoor heat exchanger and
control for four-way valve and outdoor fan)
(3) Contents of operation command signal (Serial
signal) from indoor unit controller to outdoor unit
controller
The following three types of signals are sent
from the indoor unit controller.
• Operation mode set on the remote control
• Compressor revolution command signal
defined by indoor temperature and set temperature
(Correction along with variation of room
temperature and correction of indoor heat
exchanger temperature are added.)
• For these two types of signals ( [Operation
mode] and [Compressor revolution] ), the
outdoor unit controller monitors the input
current to the inverter, and perfo rms the
followed operation within the range that current
does not exceed the allowable value.
• Temperature of indoor heat exchanger by
indoor heat exchanger sensor
(Minimum revolution control)
Operations follow ed
to judgment of serial
signal from indoor
side.
– 22 –
(4) Contents of operation command signal (Serial
signal) from outdoor unit controller to indoor unit
controller
The following signals are sent from the outdoor
unit controller.
• The current operation mode
• The current compressor revolution
• Outdoor temperature
• Existence of protective circuit operation
For transf erring of these signals, the indoor
unit controller monitors the contents of signals,
and judges existence of trouble occurrence.
Contents of judgment are described below.
• Whether distinction of the current operation
status meets to the operation command
signal
• Whether protective circuit operates
When no signal is received from the outdoor
unit controller, it is assumed as a trouble.
8-1-2. Current Release Control
The outdoor main circuit control section (Inverter
assembly) detects the input current to the outdoor
unit. If the current value with compressor motor
speed instructed from indoor side exceeds the
specified value, the outdoor main circuit control
section controls compressor motor speed by reducing motor speed so that value becomes closest to
the command within the limited value.
8-1-3. Power Factor Improvement Control
Po w er factor improvement control is performed
mainly aiming to reduce the current on much power
consumption of cooling/heating operation. Controlling starts from the time when input power has
reached at a certain point. To be concrete, IGBT of
the power factor impro vement circuit is used, and
the power factor is improved by keeping IGBT on f or
an arbitrary period to widen electro-angle of the
input current.
8-1-1. Capacity Control
The cooling and heating capacity is varied by
changing compressor motor speed. The inverter
changes compressor motor speed by changing AC
220–230–240V power to DC once, and controls
capacity by changing supply power status to the
compressor with transistor module (includes 6
transistors). The outline of the control is as follows:
The revolution position and re volution speed of the
motor are detected by detecting winding electromotive force of the compressor motor under operation,
and the revolution speed is changed so that the
motor drives based upon revolution speed of the
operation command by changing timing (current
transfer timing) to exchange in verter output voltage
and supply power winding.
Detection of the revolution position f or controlling is
performed 12 times per 1 revolution of compressor.
The range of supply power frequency to the compressor differs according to the operation status
(COOL, HEAT, DRY).
Table 8-1-1 Compressor revolution range
Operation
mode
COOL
HEAT
Model
name
13UKV-E
Compressor
revolution (rps)
13 to 88
16 to 110
8-1-4. Prevent-Freezing Control
The indoor heat exchanger sensor detects refrigerant vapor temperature in COOL/DR Y operation.
If the temperature is below the specified value ,
compressor motor speed is reduced so that operation is performed in temperature below the specified
value to prev ent-freezing of indoor heat exchanger.
8-1-5. P. M. V. (Pulse Modulating Valve)
Using P.M.V., refrigerant flow of refrigeration cycle is
varied for the optimum temperature.
After the power has been turned on, when a serial
operation signal is received from indoor at the first
time, or when PMV alarm is detected and the
equipment is reactivated, move the valve once until
it hits on the stopper for positioning of the valve.
In this case, ticktack sound may be heard.
8-1-6. Louver Control
(1) V e rtical air flow louvers
Positions of v ertical air flow louvers are automatically controlled according to the operation
status (AUTO : A , COOL : , DRY : ,
HEAT : , FAN ONLY : ). Besides, positions
of vertical air flow louvers can be arbitrarily set
by pushing the [FIX] button.
(2) Swing
If the [SWING] button is pushed during running
operation, vertical air flow louvers start swinging.
When the [FIX] button is pushed, swinging stops.
– 23 –
8-1-7. Indoor Fan Control (DC Fan Motor)
(1) The indoor fan is operated by the stepless speed
change DC motor.
(2) For air flow level, speed of the indoor fan motor
is controlled in five steps (LOW, LOW+, MED ,
MED+ and HIGH). If AUTO mode is selected,
the fan motor speed is automatically controlled
by the difference between the preset temperature and the room temperature.
LOW+= LOW + MED
2
MED+= MED + HIGH
Operation
mode
COOL
DRY
HEAT
T ab le 8-1-2
Fan
mode
H
M
L
—
H
M
L
RAS-13UKV-E
Motor speed Air flow rate
(rpm) (m³/h)
1210 530
1010 420
810 330
780 320
1290 620
1110 470
930 380
2
8-1-8. Outdoor Fan Control (DC Fan Motor)
Although the outdoor fan motor drives the outdoor fan by non-step variable system of the re volution speed, the
revolution speed is restricted to three steps on the convenience of controlling. If a strong wind is lashing outside
of the room, the operation may be continued as the outdoor f an stops in order to protect the outdoor fan motor.
If a fan lock occurred due to entering of foreign matter, the air conditioner stops and an alarm is displayed.
<COOL, DRY>
Model name
Compressor revolution (rps)
TO ≥ 38°C
Outdoor temp. sensor TO TO < 38°C
TO < 15°C
TO ≥ 38°C
ECONO. operation TO < 38°C
TO < 15°C
TO is abnormal
<HEAT>
Model name
Compressor revolution (rps)
Outdoor temp. sensor TO
ECONO. operation
TO is abnormal
TO ≥ 5°C
TO < 5°C
TO ≥ 5°C
TO < 5°C
T a ble 8-1-3
RAS-13UAV-E
To 13.8 To 34.7 From 35.3
390 840 840
390 700 840
390
390 700 840
390 390 700
390
700 700 840
T a ble 8-1-4
RAS-13UAV-E
To 16.8 To 57.4 From 58.0
390 650 840
650 650 840
390 390 650
390 650 650
390 650 840
– 24 –
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