Saijo Denki CVIA-80-CPF3 User manual

Re-edit version.( file volume down)
AIR CONDITIONER (MULTI TYPE)
SERVICE MANUAL
Outdoor Unit
<SUPER MODULAR MULTI SYSTEM-i>
Model name:
CVIA-80-CPF3
CVIA-100-CPF3
CVIA-120-CPF3
CVIA-140-CPF3
CVIA-160-CPF3
CVIA-180-CPF3
CVIA-200-CPF3
CVIA-220-CPF3
CVIA-240-CPF3
CVIA-260-CPF3
CVIA-280-CPF3
CVIA-300-CPF3
CVIA-320-CPF3
CVIA-340-CPF3
CVIA-360-CPF3
CVIA-380-CPF3
CVIA-400-CPF3
CVIA-420-CPF3
CVIA-440-CPF3
CVIA-460-CPF3
CVIA-480-CPF3
CVIA-500-CPF3
CVIA-520-CPF3
CVIA-540-CPF3
CVIA-560-CPF3
Saijo denki International co.,ltd. PRINTED IN THAILAND, Sep, 2019
Contents have NOT been changed.
REVISION 0 : Aug.2019
FILE No. A10-020-1

Contents
Generic Denomination: Air Conditioner
3
New Refrigerant (R410A) 15
1 Specifications 17
1.1 VRF IV - Outdoor Units 17
1.2 VRF IV - Indoor Unit
21
2 Wiring Diagrams 28
2.1 Outdoor unit 28
2.2 Indoor unit 29
3 Parts Rating
37
3.1 Outdoor unit 37
3.2 Outdoor inverter 37
3.3 Parts layout in outdoor unit 38
3.4 Parts layout in inverter assembly
39
3.5 Outdoor (inverter) print circuit board 40
3.5.1 Interface P.C. board (MNCM1B) 40
3.5.2 Inverter P.C. board for compressor (MOBLED360) 41
3.5.3 Inverter P.C. board for fan (MNFDC5A) 42
4 Refrigerant Piping Systematic Drawing 43
5 ADDRESS SETTING 45
6 Manual address setting using the remote controller
48
6.1 Manual address setting using the indoor unit display 49
6.2 Confirm the indoor unit addresses 49
7 TEST RUN 50
8 Error code 53
Error code 01-10 (SWV) 53
Error code 01-10 (SCV) 54
Error code 01-10 (SUV) 55
Error code 01-10 (SFV) 56
Error code 01-10 (SDV-L) 57
Error code 01-10 (SDV-M) 58
Error code 01-10 (SDV-H) 59
Error code 11-31 60
Error code 32-42 61
Error code 43-50 62
Flow chart error code 63
9 Troubleshooting 97

Saijo denki International co.,ltd. 2

Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified
service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to
do them for you.
Definition of Protective Gear
When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves
and ‘safety’ work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the
special work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.
[Explanation of indications]
* Property damage: Enlarged damage concerned to property, furniture, and domestic animal/pet
Saijo denki International co.,ltd. 3
WARNING
CAUTION
Shoes with additional protective toe cap
Transportation of heavy objects
Repair of outdoor unit
Gloves to provide protection for electricians and from heat
Explanation
Indication
Indicates contents assumed that an imminent danger causing a death or
serious injury of the repair engineers and the third parties when an incorrect
work has been executed.
DANGER
the repair engineers and the third parties when an incorrect work has been
executed. Indicates possibilities assumed that a danger causing a death or
serious injury of the repair engineers, the third parties, and the users due to
troubles of the product after work when an incorrect work has been
executed.
Indicates contents assumed that an injury or property damage (*) may be
caused on the repair engineers, the third parties, and the users due to
troubles of the product after work when an incorrect work has been
executed.
Work undertaken
Protective gear worn
Work done at heights
(50 cm or more)
Helmets for use in industry
All types of work
‘Safety’ working clothing
Gloves to provide protection for electricians and from heat
Insulating shoes
Clothing to provide protection from electric shock
Electrical-related work
Protective gloves

[Explanation of illustrated marks]
Warning Indications on the Air Conditioner Unit
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions
If removing the label during parts replace, stick it as the original.
Warning
indication
Saijo denki International co.,ltd. 4
Description
CAUTION
High
temperature parts. You
might get burned when removing this panel.
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies before servicing.
The sentences or illustration near or in an illustrated mark describe the concrete cautious
contents.
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (Including danger/warning)
Explanation
Mark

Precautions for Safety
The manufacturer shall not assume any liability for the damage caused by not observing the description of this
manual.
Electric shock
hazard
Stay on
protection
Saijo denki International co.,ltd. 5
Prohibition
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts
with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor
unit removed in order to find out exactly where the trouble lies, wear insulated heat-resistant gloves,
insulated boots and insulated work overalls, and take care to avoid touching any live parts. You may
receive an electric shock if you fail to heed this warning. Only qualified service person (*1) is allowed to do
this kind of work.
DANGER
Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker
for both the indoor and outdoor units to the OFF position. Otherwise, electric shocks may result.
Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set the circuit breaker
to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the
interior parts.
Only a qualified installer (*1) or qualified service person (*1) is allowed to remove the intake grille of the
indoor unit or service panel of the outdoor unit and do the work required.
Electric shock
hazard
Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the circuit breaker to the
OFF position, and place a “Work in progress” sign on the circuit breaker.
When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF without fail, and
place a “Work in progress” sign near the circuit breaker before proceeding with the work.
When you have noticed that some kind of trouble (such as when an error display has appeared, there is a
smell of burning, abnormal sounds are heard, the air conditioner fails to cool or heat or water is leaking)
has occurred in the air conditioner, do not touch the air conditioner yourself but set the circuit breaker to the
OFF position, and contact a qualified service person. Take steps to ensure that the power will not be turned
on (by marking “out of service” near the circuit breaker, for instance) until qualified service person arrives.
Continuing to use the air conditioner in the trouble status may cause mechanical problems to escalate or
result in electric shocks or other failure.
When you access inside of the service panel to repair electric parts, wait for about five minutes after turning
off the breaker. Do not start repairing immediately.Otherwise you may get electric shock by touching
terminals of high-voltage capacitors. Natural discharge of the capacitor takes about five minutes.
Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or
removal work is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
Before operating the air conditioner after having completed the work, check that the electrical parts box
cover of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the
ON position. You may receive an electric shock if the power is turned on without first conducting these
checks.

Saijo denki International co.,ltd. 6
WARNING
Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air
conditioner by following its instructions.
Be sure that a heavy unit (10kg or heavier) such as a compressor is carried by two persons.
General
When connecting the electrical wires, repairing the electrical parts or undertaking other electrical jobs, wear
gloves to provide protection for electricians and from heat, insulating shoes and clothing to provide
protection from electric shocks.
Failure to wear this protective gear may result in electric shocks.
Electrical wiring work shall be conducted according to law and regulation in the community and installation
manual. Failure to do so may result in electrocution or short circuit.
Only a qualified installer (*1) or qualified service person (*1) is allowed to undertake work at heights using a
stand of 19.7 in (50 cm) or more or to remove the intake grille of the indoor unit to undertake work.
When working at heights, use a ladder which complies with the ISO 14122 standard, and follow the
procedure in the ladder’s instructions.
Also wear a helmet for use in industry as protective gear to undertake the work.
When working at heights, put a sign in place so that no-one will approach the work location, before
proceeding with the work.
When executing address setting, test run, or troubleshooting through the checking window on the electric
parts box, put on insulated gloves to provide protection from electric shock. Otherwise you may receive an
electric shock.
When transporting the air conditioner, wear shoes with additional protective toe caps.
When transporting the air conditioner, do not take hold of the bands around the packing carton.
You may injure yourself if the bands should break.
Do not touch the aluminum fin of the outdoor unit.
You may injure yourself if you do so. If the fin must be touched for some reason, first put on protective
gloves and safety work clothing, and then proceed.
Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall off of the outdoor unit and result in injury.
Only qualified service person (*1) is allowed to repair the air conditioner.
Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks
and/or other problems.
Do not use any refrigerant different from the one specified for complement or replacement. Otherwise,
abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or
explosion of the product or an injury to your body.
Only a qualified installer (*1) or qualified service person (*1) is allowed to carry out the electrical work of the
air conditioner.
Under no circumstances must this work be done by an unqualified individual since failure to carry out the
work properly may result in electric shocks and/or electrical leaks.
When transporting the air conditioner, wear shoes with protective toe caps, protective gloves and other
protective clothing.

Prohibition of
modification.
Use specified
parts.
Do not bring
a child close
to the
equipment.
Insulating
measures
No fire
Saijo denki International co.,ltd. 7
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts
with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor
unit removed in order to find out exactly where the trouble lies, put a sign in place so that no-one will
approach the work location before proceeding with the work. Third-party individuals may enter the work site
and receive electric shocks if this warning is not heeded.
Connect the cut-off lead wires with crimp contact, etc., put the closed end side upward and then apply a
water-cut method, otherwise a leak or production of fire is caused at the users’ side.
When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that
coats the pipes may otherwise burn.
When repairing the refrigerating cycle, take the following measures.
1) Be attentive to fire around the cycle. When using a gas stove, etc., be sure to put out fire before
work; otherwise the oil mixed with refrigerant gas may catch fire.
2) Do not use a welder in the closed room. When using it without ventilation, carbon monoxide
poisoning may be caused.
3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder
may catch the inflammables.
The refrigerant used by this air conditioner is the R410A.
Check the used refrigerant name and use tools and materials of the parts which match with it.
For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the
outdoor unit where is easy to see. To prevent miss-charging, the route of the service port is changed from
one of the former R22.
Refrigerant
For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner
which uses other refrigerant (R22, etc.), never use R410A.
If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle
and an injury due to breakage may be caused.
When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual
and urge the air completely so that no gases other than the refrigerant will be mixed in the refrigerating
cycle. Failure to purge the air completely may cause the air conditioner to malfunction.
When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the
specifications given in the Service Manual (or use the parts contained on the parts list in the Service
Manual).
Use of any parts which do not satisfy the required specifications may give rise to electric
shocks, smoking and/ or a fire.
Check earth
wires.
Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main
unit, otherwise an electric shock is caused when a leak occurs.If the earth wire is not correctly connected,
contact an electric engineer for rework.
After completing the repair or relocation work, check that the ground wires are connected properly.
Be sure to connect earth wire. (Grounding work) Incomplete grounding causes an electric shock.
Do not connect ground wires to gas pipes, water pipes, and lightning rods or ground wires for telephone
wires.
Do not modify the products.Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.

Assembly/
Wiring
Insulator
check
Ventilation
Saijo denki International co.,ltd. 8
When the refrigerant gas leaks during work, execute ventilation.
If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant
and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to execute
ventilation.
When the refrigerant gas leaks, find up the leaked position and repair it surely.
If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the
service valve, otherwise the refrigerant gas may leak into the room.
The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove
though the refrigerant gas itself is innocuous.
When installing equipment which includes a large amount of charged refrigerant such as a multi air
conditioner in a sub-room, it is necessary that the density does not the limit even if the refrigerant leaks. If
the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.
After installation work, check the refrigerant gas does not leak. If the refrigerant gas leaks in the room,
poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the
refrigerant gas itself is innocuous.
Never recover the refrigerant into the outdoor unit. When the equipment is moved or repaired, be sure to
recover the refrigerant with recovering device.
The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as
breakage or injury is caused.
After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as
before. Perform the work so that the cabinet or panel does not catch the inner wires.
If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused at
user’s side.
Refrigerant
Compulsion
Do not charge refrigerant additionally. If charging refrigerant additionally when refrigerant gas leaks, the
refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner
characteristics or refrigerant over the specified standard amount is charged and an abnormal high pressure
is applied to the inside of the refrigerating cycle resulted in cause of breakage or injury. Therefore if the
refrigerant gas leaks, recover the refrigerant in the air conditioner, execute vacuuming, and then newly
recharge the specified amount of liquid refrigerant. In this time,
never charge the refrigerant over the specified amount.
When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other than
R410A into the specified refrigerant. If air or others is mixed with the refrigerant, abnormal high pressure
generates in the refrigerating cycle resulted in cause of injury due to breakage.
Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may result
in refrigerant leakage.
Nitrogen gas must be used for the airtight test.
The charge hose must be connected in such a way that it is not slack.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is
caused.
After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance
is 1M: or more between the charge section and the non-charge metal section (Earth position).
the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.

Do
not operate the
unit with the
valve closed.
Saijo denki International co.,ltd. 9
Check after
reinstallation
Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the air conditioner. It is
dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
Check the following items after reinstallation.
1) The earth wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant
pipe. Disconnecting the refrigerant pipe with the service valve left open and the compressor still
operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an
abnormally high level, and possibly resulting in reputing, injury, etc.
Cooling check
When the service panel of the outdoor unit is to be opened in order for the compressor or the area
around this part to be repaired immediately after the air conditioner has been shut down, set the circuit
breaker to the OFF position, and then wait at least 10 minutes before opening the service panel.
If you fail to heed this warning, you will run the risk of burning yourself because the compressor pipes
and other parts will be very hot to the touch. In addition, before proceeding with the repair work, wear the
kind of insulated heat-resistant gloves designed to protect electricians.
Take care not to get burned by compressor pipes or other parts when checking the cooling cycle while
running the unit as they get heated while running. Be sure to put on gloves providing protection for
electric shock and heat.
When the service panel of the outdoor unit is to be opened in order for the fan motor, reactor, inverter or
the areas around these parts to be repaired immediately after the air conditioner has been shut down,
set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service
panel.
If you fail to heed this warning, you will run the risk of burning yourself because the fan motor,
reactor, inverter heat sink and other parts will be very hot to the touch. In addition, before proceeding
with the repair work, wear the kind of insulated heat-resistant gloves designed to protect electricians.
Check after
repair
Once the repair work has been completed, check for refrigerant leaks, and check the insulation
resistance and water drainage.
Then perform a trial run to check that the air conditioner is running properly.
After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock or
injury may be caused. For a check, turn off the power breaker.
After repair work (installation of front panel and cabinet) has finished, execute a test run to check there is
no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused. Before test run, install the front panel
and cabinet.
Be sure to fix the screws back which have been removed for installation or other purposes.
Check the following matters before a test run after repairing piping.
• Connect the pipes surely and there is no leak of refrigerant.
• The valve is opened.
Running the compressor under condition that the valve closes causes an abnormal
high pressure resulted in damage of the parts of the compressor and etc. and moreover if there is leak of
refrigerant at connecting section of pipes, the air is sucked and causes further abnormal high pressure
resulted in burst or injury.

Explanations given to user
Relocation
(*1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”
Saijo denki International co.,ltd. 10
- If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker
to the OFF position, and contact a qualified service person to have the repairs done.
Do not set the circuit breaker to the ON position until the repairs are completed.
- Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the air conditioner.
It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
- When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause
air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and
possibly resulting in reputing, injury, etc.
Install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure
themselves or Installation receive electric shocks if they poke their fingers or other objects into the indoor unit
while the air conditioner is running.
Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the
local regulations and laws.
Install the circuit breaker where it can be easily accessed by the qualified service person (*1).
If you install the unit in a small room, take appropriate measures to prevent the refrigerant from
exceeding the limit concentration even if it leaks. Consult the dealer from whom you purchased the air
conditioner when you implement the measures. Accumulation of highly concentrated refrigerant may
cause an oxygen deficiency accident.
Do not place any combustion appliance in a place where it is directly exposed to the wind of air
conditioner, otherwise it may cause imperfect combustion.
Installtion
Do not install the air conditioner in a location that may be subject to a risk of expire to a combustible gas.
If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.
Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner. If the
air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise
and/or vibration may result.
Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its
instructions to install the air conditioner.
Be sure to use the company-specified products for the separately purchased parts. Use of non-specified
products may result in fire, electric shock, water leakage or other failure. Have the installation performed
by a qualified installer.
Do not supply power from the power terminal block equipped on the outdoor unit to another outdoor unit.
Capacity overflow may occur on the terminal block and may result in fire.

Carrying in the Outdoor Unit
Handle the outdoor unit carefully, observing the following items.
Saijo denki International co.,ltd. 11
CAUTION
To use a forklift or other machinery for loading / unloading in transportation, insert the prongs of the forklift into the
rectangular holes for handling as shown below.
To lift up the unit, insert a rope capable of bearing the weight of the unit into the rectangular holes shown below.
Tie the unit from 4 sides.
(Apply padding in positions where the rope comes in contact with the outdoor unit so that no damage is caused
to the outer surface of the outdoor unit.)
(There are reinforcing plates on the side surfaces, so the rope cannot be passed through.)

Weight centre and weight
CVIA-80-CPF3
CVIA-100-CPF3
CVIA-120-CPF3
CVIA-140-CPF3
Saijo denki International co.,ltd. 12
857
230
624
376
857
230
624
376
857
230
624
376
857
230
Unit: in (mm)
Y
(mm)
Z
(mm)
624
376
OUTDOOR
MODEL
X
(mm)
Weight
(kg)
COOLING ONLY
Weight centre of an outdoor unit

Adding refrigerant
charging of refrigerant.
Calculatio
Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipes at the local site.
For refrigerant to be charged in pipes at the local site, calculate the amount and charge it additionally.
NOTE
additional refrigerant.
MAP080 MAP100 MAP120 MAP140 MAP160
MAP080 MAP100 MAP120 MAP140 MAP160
10.5 10.5 10.5 11.5 11.5
Table 1
6.40 9.50 12.70 15.90 19.10 22.20
Saijo denki International co.,ltd. 13
Additional refrigerant
charge amount per 1m
liquid pipe (Table 1)
=
After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional
If the additional refrigerant amount indicates minus as the result of calculation, use the air conditioner without
Heat pump type
Outdoor unit type
Charging amount (kg)
Cooling only type
Outdoor unit type
Charging amount (kg)
Corrective amount of
refrigerant depending on
HP of cooperating
outdoor units (Table 2)
+ Liquid pipe dia. (mm)
Additional refrigerant amount/1m liquid pipe
(kg/m)
0.025
0.055
0.105
0.160
0.250
0.350
Additional refrigerant
charge mount at local site
=
Real length
of liquid pipe
=

Table 2
8 HP - - -
10 HP - - -
12 HP - - -
14 HP - - -
16 HP - - -
10 HP - - -
10 HP - - -
12 HP - - -
12 HP - - -
16 HP - - -
16 HP - - -
16 HP - - -
16 HP - - -
12 HP - - -
12 HP - - -
16 HP - - -
16 HP - - -
16 HP - - -
16 HP - - -
16 HP - - -
16 HP - - -
Charging of refrigerant
• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.
Saijo denki International co.,ltd. 14
Combined HP (HP)
8
C (Corrective amount
of refrigerant) (kg)
10
12
14
16
18
0.0
3.0
22
24
26
20
1.5
2.5
3.5
8.5
10.5
42
44
5.0
7.5
8.5
9.5
11.5
12.5
34
36
38
28
30
32
Standard type
Combined outdoor units (HP)
• Keeping the valve of the outdoor unit closed, be sure to charge the liquid refrigerant into the service port at the
liquid side.
• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas
sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the gas side. In
this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.
46
48
7.0
8.0
10.0
12.0
14.0
3.0
4.0
6.0
40

New Refrigerant (R410A)
This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer.
1. Safety Caution Concerned to New Refrigerant
2. Cautions on Installation/Service
(1) Do not mix the other refrigerant or refrigerating oil.
For the earth protection, use a vacuum pump for air purge.
3. Pipe Materials
(1) Copper pipe
<Piping>
<Flare nut>
Use the flare nuts which are attached to the air conditioner unit.
(2) Joint
Saijo denki International co.,ltd. 15
For the refrigerant pipes, copper pipe and joints are mainly used. It is necessary to select the most appropriate
pipes to conform to the standard. Use clean material in which impurities adhere inside of pipe or joint to a
minimum.
The pipe thickness, flare finishing size, flare nut and others differ according to a refrigerant type.
When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe without
seam” and one with bonded oil amount 40mg/10m or less. Also do not use crushed, deformed, discolored
(especially inside) pipes. (Impurities cause clogging of expansion valves and capillary tubes.)
The flare joint and socket joint are used for joints of the copper pipe. The joints are rarely used for installation of
the air conditioner. However clear impurities when using them.
The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of
refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former
refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with new
refrigerant during installation work or service work. If an incorrect work or incorrect service is performed, there is
a possibility to cause a serious accident. Use the tools and materials exclusive to R410A to purpose a safe work.
For the tools exclusive to R410A, shapes of all the joints including the service port differ from
those of the former refrigerant in order to prevent mixture of them.
(2) As the use pressure of the new refrigerant is high, use material thickness of the pipe and tools
which are specified for R410A.
(3) In the installation time, use clean pipe materials and work with great attention so that water and
others do not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc.
Use the clean pipes. Be sure to brazing with flowing nitrogen gas. (Never use gas other than
nitrogen gas.)
R410A refrigerant is azeotropic mixture type refrigerant. Therefore use liquid type to charge the
refrigerant. (If using gas for charging, composition of the refrigerant changes and then characteristics of
the air conditioner change.)

4. Tools
(1) Required Tools for R410A
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
Explanation of symbols
: Newly prepared (It is necessary to use it exclusively with R410A, separately from those for R22 or R407C.)
: Former tool is available.
Saijo denki International co.,ltd. 16
(6) Level vial
(3) Insulation resistance tester
(4) Electroscope
Also prepare the following equipments for other installation method and run check.
(1) Clamp meter
(2) Thermometer
R22 (Existing article)
Bender
Bending processing of pipes
Refrigerant recovery device
Recovering refrigerant
Exclusive to R410A
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as the
general tools.
Enter the refrigerate name for identification
Refrigerant canister
Charging refrigerant
Welding machine/Nitrogen gas
cylinder
Welding of pipes
R22 (Existing article)
Refrigerant charging balance
Charging refrigerant
R22 (Existing article)
Exclusive to R410A
Vacuum pump with counterflow
Usable if a counter-flow preventive adapter is attached
Vacuum drying
R22 (Existing article)
Flare processing of pipes
Flare tool
Usable by adjusting size
Gas leak detector
Vacuum pump
Exclusive to R410A
Vacuum drying
Checking gas leak
Used tools
Gauge manifold
Charging hose
Charging cylinder
Mixing of different types 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))
Proper use of tools/parts
Vacuuming, charging refrigerant
Exclusive to R410A
Exclusive to R410A
and operation check
Usage
Charging refrigerant
Unusable (Use the Refrigerant charging balance.)
Tools exclusive for R410A (The following tools for R410A are required.)
(12)Metal saw
(4) Reamer
(5) Pipe bender
(1) Vacuum pump
(7) Screwdriver (+, –)
(8) Spanner or Monkey wrench
Use vacuum pump by attaching vacuum pump
adapter.
(2) Torque wrench
(10)Hexagon wrench (Opposite side 4mm)
(3) Pipe cutter
(11)Tape measure
(9) Hole core drill
Torque wrench
Tightening flare nut
Exclusive to Ø1/4” (6.4 mm) to Ø5/8” (15.9 mm)
Pipe cutter
Cutting pipes
R22 (Existing article)

SRV IV - Outdoor Units
Single Module Cooling onl
y
CVIA-80-CPF3 CVIA-100-CPF3 CVIA-120-CPF3 CVIA-140-CPF3
V/Ph/Hz
BTU/h 79,800 98,800 118,400 136,000
kW 23.39 28.96 34.70 39.86
kW 5.44 6.71 8.02 9.24
BTU/h/W 14.67 14.72 14.76 14.71
W/W 4.30 4.31 4.33 4.31
BTU/h/W 18.36 18.43 18.81 18.57
BTU/h 69,000 85,500 102,500 117,500
kW 20.22 25.06 30.04 34.44
kW 6.96 8.58 10.20 11.69
BTU/h/W 9.91 9.97 10.04 10.05
W/W 2.91 2.92 2.94 2.95
BTU/h 65,400 80,600 96,600 110,700
kW 19.17 23.62 28.31 32.44
kW 7.56 9.33 11.09 12.69
BTU/h/W 8.65 8.64 8.71 8.72
W/W 2.53 2.53 2.55 2.56
dB(A) 63 65 67 69
CFM 5,660 7,080 8,500 9,900
Unit Dimension mm
Packing Dimension mm
Kg
meter
meter
Kg 57911
mL
W
A
A
W
A
mm 12.70
mm 22.20
Diameter mm
Notes.
1. DB: Dr
y
Bulb Temp
(
°C
)
2. WB: Wet Bulb Temp
(
°C
)
3. The specification are based on testin
g
at Sai
j
o Denki factor
y
.
4. The specification are sub
j
ect to chan
g
e without prior notice.
9.52
3
Tube Material
Pipe Connection Size
Copper
Fin Material
Row Anti-Corrosive Pre-Coated Aluminium Blue Fin
Coil
E
44
190 (2)
1.83 (2)
26.80
FVC68D
2300
7,640
26
Maximum Vertical Pipe Length
Refrigerant Control
Rated Power Input
EXV in Indoor Unit
R410A
Rated Current
Refrigerant Type
Refrigerant Charge
Compressor
Type
Oil Type
Oil Amoun
t
EER T3
COP T3
Power Supply
DC Inverter Scroll
Unit Weight
Maximum Total Pipe Length
W x D x H
W x D x H
150
50
230
1,255 x 775 x 1,716
1,455 x 975 x 1,870
Fan Drive
Type
Liquid
Gas
Fan Motor
Type
Index of Protection (IP)
Insulation Grade
Rated Power Input
Rated Current
Poles
Air Flow
IEER
Model
Nominal Cooling Capacity T1
Nominal Power Input T1
EER T1
COP T1
Nominal Cooling Capacity T4
Nominal Power Input (Cooling) T4
EER T4
COP T4
Sound Pressure Level
380-415 / 3 / 50
Nominal Cooling Capacity T3
Nominal Power Input (Cooling) T3
Locked Rotor Amp
OUT.: 48°C DB / 26.9°C WB
Cooling T1
IN: 27°C DB / 19°C WB
OUT: 35°C DB / 24°C WB
Cooling T3
IN: 29°C DB / 19°C WB
OUT: 46°C DB / 24°C WB
Propeller
Direct 15.90
Cooling T4
IN.: 26.6°C DB / 19.4°C WB
-
BLDC Motor
8

SRV IV - Outdoor Units
2 Module Coolin
g
onl
y
CVIA-160-CPF3 CVIA-180-CPF3 CVIA-200-CPF3 CVIA-220-CPF3 CVIA-240-CPF3 CVIA-260-CPF3 CVIA-280-CPF3
V/Ph/Hz
BTU/h 159,600 178,600 197,600 217,200 236,800 254,400 272,000
kW 46.78 52.34 57.91 63.66 69.40 74.56 79.72
kW 10.88 12.15 13.42 14.73 16.04 17.27 18.49
BTU/h/W 14.67 14.70 14.72 14.74 14.76 14.73 14.71
W/W 4.30 4.31 4.31 4.32 4.33 4.32 4.31
BTU/h/W 18.36 18.40 18.43 18.62 18.81 18.69 18.57
BTU/h 138,000 154,500 171,000 188,000 205,000 220,000 235,000
kW 40.45 45.28 50.12 55.10 60.08 64.48 68.87
kW 13.92 15.54 17.16 18.78 20.41 21.90 23.38
BTU/h/W 9.91 9.94 9.97 10.01 10.04 10.05 10.05
W/W 2.91 2.91 2.92 2.93 2.94 2.94 2.95
BTU/h 130,800 146,000 161,200 177,200 193,200 207,300 221,400
kW 38.34 42.79 47.25 51.93 56.62 60.76 64.89
kW 15.13 16.89 18.66 20.42 22.18 23.78 25.38
BTU/h/W 8.65 8.64 8.64 8.68 8.71 8.72 8.72
W/W 2.53 2.53 2.53 2.54 2.55 2.55 2.56
dB(A) 63 (2) 63 (1) ,65 (1) 65 (2) 65 (1) ,67(1) 67(2) 69(1) ,67(1) 69(2)
CFM 5,660
(
2
)
5,660
(
1
)
,7,080
(
1
)
7,080
(
2
)
7,080
(
1
)
,8,500
(
1
)
8,500
(
2
)
9,900
(
1
)
, 8,500
(
1
)
9,900
(
2
)
Unit Dimension mm
Packing Dimension mm
Kg
mete
r
mete
r
Kg 10 12 14 16 18 20 22
mL
W
A
A
W
A
mm 12.70 (2) 15.90 (1),12.70 (1)
mm 22.20 (2) 26.80 (1), 22.20 (1)
Diameter mm
CVIA-80-CPF3 CVIA-100-CPF3 CVIA-100-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-140-CPF3 CVIA-140-CPF3
CVIA-80-CPF3 CVIA-80-CPF3 CVIA-100-CPF3 CVIA-100-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-140-CPF3
Notes.
1. DB: Dry Bulb Temp (°C)
2. WB: Wet Bulb Temp (°C)
3. The specification are based on testing at Saijo Denki factory.
4. The specification are subject to change without prior notice.
Insulation Grade
Poles
Rated Power Input
Rated Current
Type
Oil Type
Rated Power Input
Locked Rotor Amp
1,455 x 975 x 1,870 (2)
EXV in Indoor Unit
Maximum Vertical Pipe Length
Refrigerant Control
Index of Protection (IP)
230 (2)
Pipe Connection Size Liquid
Gas
44
150
50
R410A
FVC68D
2,300
7,640
26
BLDC Motor
Refrigerant Charge
Compressor
Maximum Total Pipe Length
Refrigerant Type
Sound Pressure Level
-
DC Inverter Scroll
8
Propeller
Rated Curren
t
Oil Amount
Type
Fan Drive
1,255 x 775 x 1,716 (2)W x D x H
Unit Weight W x D x H
Fan Motor
Type
15.90 (2)
26.8 (2)
E
190 (4)
1.83 (4)
IN.: 26.6°C DB / 19.4°C WB
OUT.: 48°C DB / 26.9°C WB
Combination units
Coil Fin Anti-Corrosive Pre-Coated Aluminium Blue Fin
9.52
3
Copper
Tube Material
OUT: 46°C DB / 24°C WB
Cooling T4
Cooling T1
IN: 27°C DB / 19°C WB
OUT: 35°C DB / 24°C WB
Model
Nominal Cooling Capacity T1
Nominal Power Input T1
EER T1
Power Supply 380-415 / 3 / 50
COP T1
Cooling T3
IN: 29°C DB / 19°C WB
Material
Row
COP T4
Air Flow
IEER
Nominal Cooling Capacity T3
Nominal Power Input (Cooling) T3
EER T3
COP T3
Nominal Cooling Capacity T4
Nominal Power Input (Cooling) T4
EER T4
Direct

SRV IV - Outdoor Units
3 Module Cooling only CVIA-300-CPF3 CVIA-320-CPF3 CVIA-340-CPF3 CVIA-360-CPF3 CVIA-380-CPF3 CVIA-400-CPF3 CVIA-420-CPF3
V/Ph/Hz
BTU/h 296,400 316,000 335,600 355,200 372,800 390,400 408,000
kW 86.87 92.61 98.36 104.10 109.26 114.42 119.58
kW 20.13 21.44 22.76 24.07 25.29 26.51 27.73
BTU/h/W 14.72 14.74 14.75 14.76 14.74 14.73 14.71
W/W 4.31 4.32 4.32 4.33 4.32 4.32 4.31
BTU/h/W 18.43 18.56 18.68 18.81 18.73 18.65 18.57
BTU/h 256,500 273,500 290,500 307,500 322,500 337,500 352,500
kW 75.18 80.16 85.14 90.12 94.52 98.92 103.31
kW 25.73 27.36 28.99 30.61 32.10 33.59 35.07
BTU/h/W 9.97 10.00 10.02 10.04 10.05 10.05 10.05
W/W 2.92 2.93 2.94 2.94 2.94 2.95 2.95
BTU/h 241,800 257,800 273,800 289,800 303,900 318,000 332,100
kW 70.87 75.56 80.25 84.94 89.07 93.20 97.33
kW 27.99 29.75 31.51 33.27 34.87 36.47 38.06
BTU/h/W 8.64 8.66 8.69 8.71 8.72 8.72 8.72
W/W 2.53 2.54 2.55 2.55 2.55 2.56 2.56
dB(A) 65 (3) 63 (1), 65 (2) 67 (2), 65 (1) 67 (3) 69 (1), 67 (2) 69 (2), 67 (1) 69 (3)
CFM 7,080
(
3
)
5,660
(
1
)
, 7,080
(
2
)
8500
(
2
)
, 7,080
(
1
)
8,500
(
3
)
9,900
(
1
)
,8,500
(
2
)
9,900
(
2
)
, 8,500
(
1
)
9,900
(
3
)
Unit Dimension mm
Packing Dimension mm
Kg
mete
r
mete
r
Kg 21 23 25 27 29 31 33
mL
W
A
A
W
A
mm
mm
Diameter mm
CVIA-100-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-140-CPF3 CVIA-140-CPF3 CVIA-140-CPF3
CVIA-100-CPF3 CVIA-100-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-140-CPF3 CVIA-140-CPF3
CVIA-100-CPF3 CVIA-100-CPF3 CVIA-100-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-120-CPF3 CVIA-140-CPF3
Notes.
1. DB: Dr
y
Bulb Temp
(
°C
)
2. WB: Wet Bulb Temp
(
°C
)
3. The specification are based on testin
g
at Sai
j
o Denki factor
y
.
4. The specification are sub
j
ect to chan
g
e without prior notice.
7,640
26
-
Maximum Total Pipe Length
Maximum Vertical Pipe Length
Refrigerant Control
Refrigerant Charge
Coil
Compressor
Type
Oil Type
Rated Power Inpu
t
Rated Curren
t
Oil Amount
Locked Rotor Amp
Insulation Grade
Index of Protection (IP)
Rated Power Input
Rated Current
Drive
Pipe Connection Size
Fin Material
380-415 / 3 / 50
IEER
Nominal Cooling Capacity T3
Nominal Power Input (Cooling) T3
Row
Tube Material
Fan Motor
Type
Poles
Sound Pressure Level
Copper
9.52
DC Inverter Scroll
FVC68D
Direct
COP T4
COP T1
Model
Nominal Cooling Capacity T1
Nominal Power Input T1
EER T1
EER T3
COP T3
Nominal Cooling Capacity T4
Nominal Power Input (Cooling) T4
EER T4
Power Supply
W x D x H
Unit Weight W x D x H
Air Flow
Cooling T4
1,255 x 775 x 1,716 (3)
1,455 x 975 x 1,870 (3)
230 (2)
150
50
Cooling T1
15.90(3)
26.8(3)
E
190 (6)
1.83 (6)
IN.: 26.6°C DB / 19.4°C WB
IN: 27°C DB / 19°C WB
OUT: 35°C DB / 24°C WB
Cooling T3
IN: 29°C DB / 19°C WB
OUT: 46°C DB / 24°C WB
Combination units
EXV in Indoor Unit
R410A
Refrigerant Type
2300
BLDC Motor
44
Anti-Corrosive Pre-Coated Aluminium Blue Fin
3
Liquid
Gas
Fan
8
PropellerType