Mitsubishi Electric PUMY-125YMA Installation manual

Air-Conditioners For Building Application
OUTDOOR UNIT
PUMY-P125YMA
PUMY-125YMA
INSTALLATION
MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
E°XEIPI¢IO O¢H°IøN E°KATA™TA™H™
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ÂÁηٿÛÙ·ÛË Ù˘ ÌÔÓ¿‰·˜ ÎÏÈÌ·ÙÈÛÌÔ‡.
РУКОВОДСТВО ПО УСТАНОВКЕ
Для осторожного и правильного использования прибора необходимо тщательно ознакомиться с данным руководством по
установке до выполнения установки кондиционера.
MONTAJ ELK‹TABI
Emniyetli ve do¤ru biçimde nas›l kullan›laca¤›n› ö¤renmek için lütfen klima cihaz›n› monte etmeden önce bu elkitab›n› dikkatle okuyunuz.
;;;
;;
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;;
(1)
;;;;;
;;;;;
;;;;;
<A>
Max.
150
(mm)
Max.
3800
Min.
<A>
Min. 10
;;;;
;;;;
;;;;;
;;;;
;;;;;
;;;;;
;;;;;
;;;;
;;
;;;;
;;;
;;
;;;;
;;;;;
;;;
Min.
500
(2)
Service space
;;;;;
;;;;;
;;;;;
;;;;;
;;;;;
(6)
<B>
<B>
Min.
500
50
.1
in
M
(3)
<B>
0
30
in.
M
0
n.
Mi
50
;;;;;;;;;;;
;;;;;;;;;;;
(7) 1
Min.
150
<A>
Min. 10
Min. 300
[Fig. 4.0.1]
500
4
Up to 10 units
Min.
1000
Keep the top side open
(mm)
Min.
10
;;;;;
;;;;;
;;;;;
;;;;;
;;;;;
;;;;;
Min.
10
(4)
Obstruction
5
[Fig. 5.0.1]
Min. 500
Min. 1500
(mm)
4
5
500
Min.
<A>
Min. 300
Min. 150
(5)
3
2
Min. 300
<A>
Min. 3800
Min. 1500
(mm)
Air outlet guide
2
1
Air outlet
guide
A
3
Strong wind
90°
2
6
6.1
[Fig. 6.1.1]
[Fig. 6.1.2]
Min. 430
600
385
600
A M10 bolt
Min. 10
Make the
embedding
deep
(mm)
Make wide
M10 bolt (Fasten with bolt)
Installation base
Max. 25 mm
;;;;
;;;;
Length of foundation bolts
210
600
Air outlet
Drainage hole
210
Slot (2-12 × 36)
(Foundation bolts:
M10)
Viewed from bottom
(3-ø33)
U-shaped cut-out (×2)
Rear air inlet
(Foundation bolts: M10)
6.2
[Fig. 6.2.1]
Stop valve
Rear piping
Piping cover
Front piping
(knockout)
Bending radius
R 100 - 150 mm
Extraction direction
for service panel
Piping cover
Right piping
Piping cover
Racking
(knockout)
Lower piping
Service panel
3
7
8
7.2
8.2
[Fig. 8.2.1]
[Fig. 7.2.1]
A+B+C+D+a+b+c+d+e = 100m
<A> Stop valve (gas pipe)
L = A+B+C+D+e = 70m
R= B+C+D+e = 30m
<B> Stop valve (liquid pipe)
E
E
H = 30m (Outdoor lower H = 20m)
h
A
= 12m
F
L
H
r
B
B
C
a
c
d
C
C
C
h
C
E
e
D
b
To open
(turn
slowly)
E
To open
(turn
slowly)
B
G
C
A+a+b+c+d+e+f = 100m
S O
H
L = A+e = 70m, R= f
= 30m
H = 30m (Outdoor lower H = 20m)
h = 12m
L
A
A
SO
H
A : Outdoor Unit
r
H
B
B : First Branch
C : Indoor unit
D
a
b
d
e
D : Cap
f
C C C
h
C C
c
C
(This figure shows the handle when it is fully open.)
A
(mm)
Å Liquid pipe
ø9.52
PUMY-(P)125
B, C, D
Ç Total capacity of indoor units
~ 80
81 ~
a, b, c, d, e, f
Î Model number
20,25,32,40
50,63,80
100,125
A : Valve stem
ı Gas pipe
ø19.05
B : Stopper pin
E : Open (Operate slowly)
(mm)
ı Gas pipe
ø15.88
ø19.05
Å Liquid pipe
ø9.52
ø9.52
F : Cap, copper packing
G : Service port
H : Flare nut
[Fig. 8.2.2]
(mm)
Å Liquid pipe
ø6.35
ø9.52
ø9.52
ı Gas pipe
ø12.7
ø15.88
ø19.05
‰ Branch Kit Model
CMY-Y62-C-E
Ï 4-Branching Header
CMY-Y64-C
Ì 8-Branching Header
CMY-Y68
8.3
[Fig. 8.3.1]
A : Nitrogen gas
F
G
B
LO
A
C
D
C
H
I
HI
E
C : System analyzer
G : Liquid pipe
B : Lo Knob
C : Hi Knob
F
D : Lo Knob
E : Hi Knob
A : System analyzer
E
B : To indoor unit
F : Stop valve
J
D
[Fig. 8.3.2]
LO
B
A
D : Ball valve
HI
E : Liquid pipe
C
G
H : Gas pipe
G : Service port
M
J
I : Outdoor unit
J : Service port
H : Three-way joint
I : Valve
J : Valve
K
K : Cylinder
[Fig. 8.3.3]
L
4
F : Gas pipe
I
H
L : Scale
M : Vacuum pump
9
8.4
[Fig. 8.4.1]
B
9.2
[Fig. 9.2.1]
M1
C
A
M2 S
M1
TB3
M2 S
A : Power source
L1 L2 L3 N
B : Transmission line
A
TB7
B
9.3
D
E
A : Steel wire
[Fig. 9.3.1]
B : Piping
L1
C : Asphaltic oily mastic or asphalt
D : Heat insulation material A
IC
IC
IC
IC
(01)
(02)
(05)
(06)
(51)
TB3
C
E
E
A
B
TB5
M1M2 S
TB5
M1M2 S
r3
D
L2
D
E
TB5
M1M2 S
r2
A
TB5
M1M2 S
M1M2 S M1M2 S
TB7
B
r1
[Fig. 8.4.2]
C
A
OC
E : Outer covering B
A B
A B
A B
(101)
(105)
(155)
RC
RC
RC
L3
OC
E
L4
IC
IC
IC
(53)
D
D : Finishing tape
E : Insulater
L7
TB5
M1M2 S
Power Supply
Unit
r4
M1M2S
[Fig. 8.4.3]
(07)
TB5
M1M2 S
TB5
M1M2 S
L5
B : Gas pipe
C : Electric wire
L6
A : Liquid pipe
(04)
(03)
TB3
M1M2 S M1M2 S
TB7
A B
MJ103
(104)
M1M2 S
RC
B
[Fig. 9.3.2]
L1
C
A
IC
(51)
c2
(01)
TB3
TB5
M1M2 S
M1M2 S M1M2 S
TB7
TB15
1 2
IC
IC
IC
(02)
(05)
TB5
M1M2 S
TB15
1 2
TB5
M1M2 S
c2
TB15
1 2
<A> Inner wall (concealed)
c1
c1
[Fig. 8.4.4]
<B> Outer wall
C
AB
c3
L2
D
D
A B
TB5
M1M2 S
A B
A B
A B
MA
MA
E
L4
IC
TB15
1 2
c4
MA
L3
OC
(06)
c3
OC
IC
IC
(53)
(04)
(03)
TB3
TB5
M1M2 S
M1M2 S M1M2 S
TB7
EB
TB5
M1M2 S
TB15
1 2
A : Group 1
L6
B : Group 3
Power Supply
Unit
F
M1M2 S
L7
I
D : Shielded Wire
M1M2 S
A B
E : Sub Remote
Controller
MA
( ): Address
B
<F> Penetrating portion on fire
limit and boundary wall
I
C : Group 5
MJ103
G
B
G
(07)
TB15
1 2
<D> Floor (fireproofing)
D
<E> Roof pipe shaft
TB5
M1M2 S
c1
<C> Outer wall (exposed)
TB15
1 2
J
9.4
[Fig. 9.4.1]
D
B
H
F
A
A
1m
3 N~380 - 415 V
A : Switch (Breakers for Wiring and Current Leakage)
B
B : Outdoor Unit
A : Sleeve
B : Heat insulating material
C : Lagging
D : Caulking material
E : Band
F : Waterproofing laye
G : Sleeve with edge
H : Lagging material
C : Pull Box
D : Indoor Unit
1m
C
A
~/N 220 - 240 V
D
D
D
D
I : Mortar or other incombustible caulking
J : Incombustible heat insulation material
5
Contents
1. Safety precautions ......................................................................................
1.1. Before installation and electric work ..........................................
1.2. Precautions for devices that use R407C refrigerant ..................
1.3. Before getting installed ..............................................................
1.4. Before getting installed (moved) - electrical work ......................
1.5. Before starting the test run ........................................................
2. Specifications ..............................................................................................
3. Confirmation of parts attached ....................................................................
4. Space required around unit ........................................................................
5. Selection of installation site ........................................................................
6. Installation of unit ........................................................................................
6.1. Installation .................................................................................
6.2. Connecting direction for refrigerant piping ................................
7. Refrigerant piping installation .....................................................................
7.1. Caution ......................................................................................
6
6
6
7
7
7
7
7
8
8
9
9
9
9
9
7.2. Refrigerant piping system .......................................................... 9
8. Additional Refrigerant Charge .................................................................. 10
8.1. Calculation of Additional Refrigerant Charge .......................... 10
8.2. Caution for piping connection/valve operation ........................ 10
8.3. Airtight test, evacuation, and refrigerant charging ................... 10
8.4. Thermal insulation of refrigerant piping .................................... 11
8.5. Pump down ............................................................................. 12
9. Wiring ........................................................................................................ 13
9.1. Caution .................................................................................... 13
9.2. Control box and connecting position of wiring ......................... 13
9.3. Wiring transmission cables ...................................................... 13
9.4. Wiring of main power supply and equipment capacity ............ 14
10. Test run ..................................................................................................... 14
10.1. The following phenomena do not represent trouble
(emergency) ............................................................................ 14
1.1. Before installation and electric work
F
D
GB
1. Safety precautions
•
s Before installing the unit, make sure you read all the “Safety
precautions”.
•
s This equipment may not be applicable to EN60555-2:1987/
EN61000-3-2:1995+A1:1998+A2:1998 and/or EN605553:1987+A1:1991/EN61000-3-3:1995.
•
s This equipment does not comply with the relevant technical
standards for the limitation of harmonic currents emissions
and may cause adverse effects to other equipment. Before
connecting this equipment to the power supply system, please
report to your supply authority and obtain the consent.
•
•
s Do not connect other electric appliancec to the same supply
lines.
E
s The “Safety precautions” provide very important points regarding safety. Make sure you follow them.
•
Symbols used in the text
I
Warning:
Describes precautions that should be observed to prevent danger of injury
or death to the user.
•
NL
Caution:
Describes precautions that should be observed to prevent damage to the
unit.
•
Symbols used in the illustrations
: Indicates an action that must be avoided.
P
: Indicates that important instructions must be followed.
•
: Indicates a part which must be grounded.
: Beware of electric shock. (This symbol is displayed on the main unit label.)
GR
<Color: yellow>
Warning:
Carefully read the labels affixed to the main unit.
RU
Warning:
•
•
TR
•
•
•
•
•
•
•
Ask the dealer or an authorized technician to install the air conditioner.
- Improper installation by the user may result in water leakage, electric shock,
or fire.
Install the unit at a place that can withstand its weight.
- Inadequate strength may cause the unit to fall down, resulting in injuries.
Use the specified cables for wiring. Make the connections securely so
that the outside force of the cable is not applied to the terminals.
- Inadequate connection and fastening may generate heat and cause a fire.
Prepare for strong winds and earthquakes and install the unit at the specified place.
- Improper installation may cause the unit to topple and result in injury.
Always use an filter and other accessories specified by Mitsubishi Electric.
- Ask an authorized technician to install the accessories. Improper installation
by the user may result in water leakage, electric shock, or fire.
Never repair the unit. If the air conditioner must be repaired, consult the
dealer.
- If the unit is repaired improperly, water leakage, electric shock, or fire may result.
Do not touch the heat exchanger fins.
- Improper handling may result in injury.
6
•
If refrigerant gas leaks during installation work, ventilate the room.
- If the refrigerant gas comes into contact with a flame, poisonous gases will
be released.
Install the air conditioner according to this Installation Manual.
- If the unit is installed improperly, water leakage, electric shock, or fire may
result.
Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and
the instructions given in this manual and always use a special circuit.
- If the power source capacity is inadequate or electric work is performed improperly, electric shock and fire may result.
Securely install the outdoor unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may enter
the outdoor unit and fire or electric shock may result.
When installing and moving the air conditioner to another site, do not
charge the it with a refrigerant different from the refrigerant (R407C or
R22) specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.
If the air conditioner is installed in a small room, measures must be taken
to prevent the refrigerant concentration from exceeding the safety limit
even if the refrigerant should leak.
- Consult the dealer regarding the appropriate measures to prevent the safety
limit from being exceeded. Should the refrigerant leak and cause the safety
limit to be exceeded, hazards due to lack of oxygen in the room could result.
When moving and reinstalling the air conditioner, consult the dealer or
an authorized technician.
- If the air conditioner is installed improperly, water leakage, electric shock, or
fire may result.
After completing installation work, make sure that refrigerant gas is not
leaking.
- If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or
other heat source, it may generate noxious gases.
Do not reconstruct or change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device is shorted
and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.
To dispose of this product, consult your dealer.
The installer and system specialist shall secure safety against leakage
according to local regulation or standards.
- Following standards may be applicable if local regulation are not available.
Pay a special attention to the place, such as a basement, etc. where refrigeration gas can stay, since refrigeration is heavier than the air.
1.2. Precautions for devices that use R407C
refrigerant
Caution:
•
•
•
Do not use the existing refrigerant piping.
- The old refrigerant and refrigerator oil in the existing piping contains a large
amount of chlorine which may cause the refrigerator oil of the new unit to
deteriorate.
Use refrigerant piping made of phosphorus deoxidized copper and copper alloy seamless pipes and tubes. In addition, be sure that the inner and
outer surfaces of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant.
- Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate.
Store the piping to be used during installation indoors and keep both
ends of the piping sealed until just before brazing. (Store elbows and
other joints in a plastic bag.)
- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and
compressor trouble may result.
•
•
•
•
1.3. Before getting installed
Caution:
•
•
•
•
•
Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion may result.
Do not use the air conditioner where food, pets, plants, precision instruments, or artwork are kept.
- The quality of the food, etc. may deteriorate.
Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of
the air conditioner or damage its parts.
When installing the unit in a hospital, communication station, or similar
place, provide sufficient protection against noise.
- The inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air conditioner
to operate erroneously, or fail to operate. On the other hand, the air conditioner may affect such equipment by creating noise that disturbs medical
treatment or image broadcasting.
Do not install the unit on a structure that may cause leakage.
- When the room humidity exceeds 80 % or when the drain pipe is clogged,
condensation may drip from the indoor unit. Perform collective drainage work
together with the outdoor unit, as required.
•
1.5. Before starting the test run
Caution:
•
•
•
1.4. Before getting installed (moved) - electrical work
•
Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning rods, or
telephone ground lines. Improper grounding may result in electric shock.
•
•
Turn on the power at least 12 hours before starting operation.
- Starting operation immediately after turning on the main power switch can
result in severe damage to internal parts. Keep the power switch turned on
during the operational season.
Do not touch the switches with wet fingers.
- Touching a switch with wet fingers can cause electric shock.
Do not touch the refrigerant pipes during and immediately after operation.
- During and immediately after operation, the refrigerant pipes are may be hot
and may be cold, depending on the condition of the refrigerant flowing through
the refrigerant piping, compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the refrigerant pipes.
Do not operate the air conditioner with the panels and guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
Do not turn off the power immediately after stopping operation.
- Always wait at least five minutes before turning off the power. Otherwise,
water leakage and trouble may occur.
GR
Caution:
2. Specifications
Operation temperature
RU
PUMY-(P)125YMA
54 dB <A>
127 kg
2.94 MPa
0 Pa
50 ~ 130 %
20 ~ 125 / 1 ~ 8
Cooling mode: – 5 °CDB ~ 46 °CDB
Heating mode: – 12 °CWB ~ 15.5 °CWB
TR
Model
Noise level
Net weight
Maximum refrigerant pressure
External static pressure
Total capacity
Indoor units
Model / Quantity
GB
•
•
D
•
•
F
•
•
E
•
•
The reverse phase of L lines (L1, L2, L3) and the reverse phase of L lines
and N line can be not be detected.
- The some electric parts should be damaged when power is supplied under
the miss wiring.
Install the power cable so that tension is not applied to the cable.
- Tension may cause the cable to break and generate heat and cause a fire.
Install an leak circuit breaker, as required.
- If an leak circuit breaker is not installed, electric shock may result.
Use power line cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
Use only a circuit breaker and fuse of the specified capacity.
- A fuse or circuit breaker of a larger capacity or a steel or copper wire may
result in a general unit failure or fire.
Do not wash the air conditioner units.
- Washing them may cause an electric shock.
Be careful that the installation base is not damaged by long use.
- If the damage is left uncorrected, the unit may fall and cause personal injury
or property damage.
Install the drain piping according to this Installation Manual to ensure
proper drainage. Wrap thermal insulation around the pipes to prevent
condensation.
- Improper drain piping may cause water leakage and damage to furniture
and other possessions.
Be very careful about product transportation.
- Only one person should not carry the product if it weighs more than 20 kg.
- Some products use PP bands for packaging. Do not use any PP bands for a
means of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your fingers.
- When transporting the outdoor unit, suspend it at the specified positions on
the unit base. Also support the outdoor unit at four points so that it cannot
slip sideways.
Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts, may cause
stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children will not
play with them. If children play with a plastic bag which was not torn apart,
they face the risk of suffocation.
I
•
•
NL
•
Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator
oil to coat flares and flange connections.
- The refrigerator oil will degrade if it is mixed with a large amount of mineral oil.
Use liquid refrigerant to fill the system.
- If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop.
Do not use a refrigerant other than R407C.
- If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may
cause the refrigerator oil to deteriorate.
Use a vacuum pump with a reverse flow check valve.
- The vacuum pump oil may flow back into the refrigerant cycle and cause the
refrigerator oil to deteriorate.
Do not use the following tools that are used with conventional refrigerants.
(Gauge manifold, charge hose, gas leak detector, reverse flow check valve,
refrigerant charge base, refrigerant recovery equipment)
- If the conventional refrigerant and refrigerator oil are mixed in the R407C,
the refrigerant may deteriorated.
- If water is mixed in the R407C, the refrigerator oil may deteriorate.
- Since R407C does not contain any chlorine, gas leak detectors for conventional refrigerants will not react to it.
Do not use a charging cylinder.
- Using a charging cylinder may cause the refrigerant to deteriorate.
Be especially careful when managing the tools.
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.
P
•
3. Confirmation of parts attached
In addition to this manual, the following parts are supplied with the outdoor unit.
They are used for group operation with more than two outdoor units. For details
refer to page 13.
Grounding lead wire (×2) (green/yellow)
7
4. Space required around unit
[Fig. 4.0.1] (P.2)
<A> Top view
<B> Side view
(1) Basic space required
(2) When there is an obstruction above the unit
If there are no obstacles in front or at the left or right of the unit, obstacles above
the unit are permitted as shown in the diagram.
•
The front, right and left sides must be free of obstacles.
(6) Obstacles in the front (blowing side) only
If there are obstacles in front of the unit, keep the back, left/right, & top unobstructed.
(7) When installing many outdoor units
1 Side-by-side arrangement
Remove the side screw on the pipe cover.
Keep the top unobstructed.
•
2 Face-to-face arrangement (with air outlet guide)
Fit an optional outdoor air outlet guide on each unit and set them to “upward blow”.
•
The front and top must be unobstructed.
3 Face-to-face arrangement (without air outlet guides)
•
The height of obstacles on either side must be the same or lower than that of
the outdoor unit.
4 Parallel arrangement (with air outlet guides)
Fit an optional outdoor air outlet guide on each unit.
GB
(4) When unit is surrounded by walls
The unit cannot be used if there are obstacles on all 4 surrounding sides, even if
there is more than the prescribed amount of space around the outdoor unit and if
the top is unobstructed.
D
Refrigerant piping and electric wiring cannot be attached on the right side.
(3) When inlet air enters from right and left sides of unit
If the size of the space reserved for the unit is as shown in the diagram, the unit
can be installed so that obstacles are at the right, left and rear.
5 Parallel arrangement (without air outlet guides)
(5) Obstacles at the front & rear only
The outdoor unit cannot be used except if the following conditions are met:
An optional outdoor air outlet guide (left/right & top unobstructed) must be fitted.
Moreover, if there is no natural wind flowing between the obstacles, keep the height
or width of the obstacles within the following range to prevent the risk of short
cycling. (If either the front or rear satisfies the requirements, there is no special
restriction on the remaining side).
Obstruction width: 1.5 times the width of outdoor unit or smaller
F
Obstruction height: Unit height or lower
5. Selection of installation site
•
No direct thermal radiation from other heat sources
•
No possibility of short cycle operations caused by exhaust heat from the unit
•
No possibility of annoying neighbors by noise from the unit
•
No exposure to strong wind
•
No possibility of snow damage
•
Fixture with strength which bears the weight of the unit
•
Note that drain flows out of the unit when heating
•
With space for air passage and service work shown opposite.
NL
I
E
[Fig. 5.0.1] (P.2)
Select space for installing the outdoor unit, which will meet the following conditions:
Because of the possibility of fire, do not install the unit to spaces where generation, inflow, stagnation, and leak of combustible gas is expected.
Avoid unit installation in a place where acidic solutions and spray (sulfur) are
often used.
•
Take into account the following points if there are chances that cooling operation will be required when the out door temperature is 10°C or lower. (Allowable outdoor temperature is -5°C.)
• Do not install the outdoor unit in places where it may be exposed directly to
rain, snow or wind.
• If the above location is unavoidable, optional anti-snow ducts or air outlet
guides must be installed.
• Install the outdoor unit on the same floor or in a position higher than the
indoor units.
• In principle, the outdoor unit must be installed in a position higher than the
indoor units. If the outdoor unit has to be installed in a position lower than the
indoor units, keep the difference in height to within 4 m.
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•
8
•
Do not use the unit in any special environment where oil, steam and sulfuric
gas exist.
Restriction on installing the outdoor unit to conduct cooling operation under the outdoor
temperature of 10°C or less.
(At the same or above the floor on which the indoor unit is installed)
A
4m or less
Precautions
Installation on a rooftop or other windy places
When installing the unit on a rooftop or other location unprotected from the wind,
situate the unit’s air outlet so that it is not directly exposed to strong winds. Strong
wind entering the air outlet may impede the normal airflow and cause malfunctions.
The following shows three examples of precautions against strong winds.
1 Face the outlet toward any available wall at least 50 cm away from the
wall.
2 Install an optional air outlet guide and if the unit is installed at a place
where the powerful blast of a typhoon, etc. comes directly into the air
outlet.
3 Position the unit so that the air outlet blows perpendicularly to the seasonal wind direction, if possible.
6. Installation of unit
Any installation deficiency may cause unit to fall down, resulting in a
personal injury.
6.1. Installation
[Fig. 6.1.1] (P.3)
A
M10 anchor bolt procured at the site.
•
Fix unit tightly with bolts so that unit will not fall down due to earthquake or
gust.
•
Use concrete or angle for foundation of unit.
•
Vibration may be transmitted to the installation section and noise and vibration
may be generated from the floor and walls, depending on the installation conditions. Therefore, provide ample vibrationproofing (cushion pads, cushion
frame, etc.).
When building the foundation, give full attention to the floor strength, drain water
disposal <during operation, drain water flows out of the unit>, and piping and wiring routes.
Bolt pitch for side-by-side arrangement of units.
[Fig. 6.1.2] (P.3)
6.2. Connecting direction for refrigerant piping
[Fig. 6.2.1] (P.3)
Warning:
•
GB
•
Be sure to install unit in a place strong enough to withstand its weight.
Any lack of strength may cause unit to fall down, resulting in a personal
injury.
Have installation work in order to protect against a strong wind and earthquake.
Warning:
2 Commercially available piping often contains dust and other materials. Always
blow it clean with a dry inert gas.
•
3 Use care to prevent dust, water or other contaminants from entering the piping
during installation.
•
4 Reduce the number of bending portions as much as possible, and make bending radius as big as possible.
5 Always observe the restrictions on the refrigerant piping (such as rated length,
the difference between high/low pressures, and piping diameter). Failure to do
so can result in equipment failure or a decline in heating/cooling performance.
•
6 The City Multi Series Y will stop due an abnormality due to excessive or insufficient coolant. At such a time, always properly charge the unit. When servicing, always check the notes concerning pipe length and amount of additional
refrigerant at both locations, the refrigerant volume calculation table on the
back of the service panel and the additional refrigerant section on the labels
for the combined number of indoor units.
•
8 Never use refrigerant to perform an air purge. Always evacuate using a vacuum
pump.
9 Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling performance, water drops from condensation and other
such problems.
0 When connecting the refrigerant piping, make sure the ball valve of the outdoor unit is completely closed (the factory setting) and do not operate it until
the refrigerant piping for the outdoor and indoor units has been connected, a
refrigerant leakage test has been performed and the evacuation process has
been completed.
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7.2. Refrigerant piping system
Connection Example
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7 Use liquid refrigerant to fill the system.
•
I
1 Use the following materials for refrigeration piping.
• Material: Use refrigerant piping made of phosphorus deoxidized copper.
In addition, be sure that the inner and outer surfaces of the pipes are clean
and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils,
moisture, or any other contaminant. (For R407C models)
NL
•
7.1. Caution
Use a vacuum pump with the service port provided the outdoor unit’s
stop valve.
- If the vacuum pump does not have the service port, the vacuum pump oil
may flow back into the refrigerant cycle and cause deterioration of the refrigerator oil and other trouble.
Do not use the tools shown below used with conventional refrigerant.
(For R407C models)
(Gauge manifold, charge hose, gas leak detector, check valve, refrigerant charge base, vacuum gauge, refrigerant recovery equipment)
- Mixing of conventional refrigerant and refrigerator oil may cause the refrigerator oil to deteriorate.
- Mixing of water will cause the refrigerator oil to deteriorate.
- R407C refrigerant does not contain any chlorine. Therefore, gas leak detectors for conventional refrigerants will not react to it.
Manage the tools more carefully than normal. (For R407C models)
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerator oil will deteriorate.
Never use existing refrigerant piping. (For R407C models)
- The large amount of chlorine in conventional refrigerant and refrigerator oil
in the existing piping will cause the new refrigerant to deteriorate.
Store the piping to be used during installation indoors and keep both
ends of the piping sealed until just before brazing.
- If dust, dirt, or water gets into the refrigerant cycle, the oil will deteriorate and
the compressor may fail.
Do not use a charging cylinder. (For R407C models)
- Using a charging cylinder may cause the refrigerant to deteriorate.
Do not use special detergents for washing piping.
P
Caution:
•
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Warning:
Always use extreme care to prevent the refrigerant gas (R407C or R22) from
leaking while using fire or flame. If the refrigerant gas comes in contact with
the flame from any source, such as a gas stove, it breaks down and generates a poisonous gas which can cause gas poisoning. Never weld in an
unventilated room. Always conduct an inspection for gas leakage after installation of the refrigerant piping has been completed.
F
When installing and moving the unit, do not charge it with refrigerant other
than the refrigerant specified on the unit.
- Mixing of a different refrigerant, air, etc. may cause the refrigerant cycle to malfunction and result in severe damage.
[Fig. 7.2.1] (P.4)
Å
Liquid pipe
ı
Gas pipe
Ç
Total capacity of indoor units
Î
Model number
‰
Branch Kit Model
Ï
4-Branching Header
Ì
8-Branching Header
A
Outdoor Unit
B
First Branch
C
Indoor unit
D
Cap
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Connecting the piping is a terminal-branch type in which refrigerant piping from
the outdoor unit is branched at the terminal and connected to each of the indoor
units.
For the piping of outdoor unit, flare connection must be used.
Note that the branched sections are brazed.
D
7. Refrigerant piping installation
A Always use a non-oxidizing brazing material for brazing the parts. If a nonoxidizing brazing material is not used, it could cause clogging or damage to
the compressor unit.
B Never perform outdoor unit piping connection work when it is raining.
9
8. Additional Refrigerant Charge
Refrigerant of 3 kg equivalent to 50-m total extended piping length (model 125) is
already included when the outdoor unit is shipped. Thus, if the total extended
piping length is 50 m or less (model 125), there is no need to charge with additional refrigerant.
Appropriate tightening torque by torque wrench:
Copper pipe external dia. (mm)
ø6.35
ø9.52
ø12.7
ø15.88
ø19.05
8.1. Calculation of Additional Refrigerant
Charge
•
•
If the total extended piping length exceeds 50 m (model 125), calculate the
required additional refrigerant charge using the procedure shown below.
If the calculated additional refrigerant charge is a negative amount, do not
charge with any refrigerant.
Tightening angle standard:
Pipe diameter (mm)
ø6.35, ø9.52
ø12.7, ø15.88
ø19.05
<Additional Charge>
Additional
refrigerant charge
=
GB
(kg)
+
–
Refrigerant
amount for
outdoor unit
(m) × 0.024 (kg/m)
125: 3.0 kg
D
F
8.2. Caution for piping connection/valve
operation
•
Conduct piping connection and valve operation accurately.
•
After evacuation and refrigerant charge, ensure that the handle is fully open. If
operating with the valve closed, abnormal pressure will be imparted to the
high- or low-pressure side of the refrigerant circuit, giving damage to the compressor, four-way valve, etc.
I
E
(m) × 0.06 (kg/m)
•
Determine the amount of additional refrigerant charge by using the formula,
and charge refrigerant additionally through the service port after completing
piping connection work.
After completing work, tighten the service port and cap securely not to generate gas leak.
[Fig. 8.2.1] (P.4)
P
<A> [Ball valve (gas side)]
(This figure shows the valve in the fully open state.)
<B> [Ball valve (liquid side)]
B
Stopper pin [Prevents the valve stem from turning 90° or more.]
Open (Operate slowly)
F
Cap, copper packing
[Remove the cap and operate the valve stem. Always reinstall the cap after operation is completed. (Valve stem cap tightening torque: 25 N·m (250 kg·cm) or
more)]
G
Service port
[Use this port to evacuate the refrigerant piping and add an additional charge at
the site.
Open and close the port using a double-ended wrench.
Always reinstall the cap after operation is completed. (Service port cap tightening
torque: 14 N·m (140 kg·cm) or more)]
H
Flare nut
Loosen and tighten this nut using a double-ended wrench.
Coat the flare contact surface with refrigerator oil (Ester oil, ether oil or alkylbenzene
[small amount]).]
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10
Valve stem
[Fully closed at the factory, when connecting the piping, when evacuating, and
when charging additional refrigerant. Open fully after the operations above are
completed.]
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A
Tightening angle (°)
60 to 90
30 to 60
20 to 35
[Fig. 8.2.2] (P.4)
Liquid pipe size
Total length of
ø6.35 × 0.024
<Example>
Outdoor model : 125
Indoor 1 : 50 A : ø9.52 30 m
a : ø9.52 15 m
At the conditions
2 : 40
b : ø6.35 10 m
below:
3 : 25
c : ø6.35 10 m
4 : 20
d : ø6.35 20 m
The total length of each liquid line is as follows
ø9.52 : A + a = 30 + 15 = 45 m
ø6.35 : b + c + d = 10 + 10 + 20 = 40 m
Therefore,
<Calculation example>
Additional
refrigerant charge = 45 × 0.06 + 40 × 0.024 – 3.0 = 0.7 kg (rounded up)
•
NL
Liquid pipe size
Total length of
ø9.52 × 0.06
Tightening torque (N·m) / (kg·cm)
14 to 18 / 140 to 180
35 to 42 / 350 to 420
50 to 57.5 / 500 to 575
75 to 80 / 750 to 800
100 to 140 / 1000 to 1400
Note:
If a torque wrench is not available, use the following method as a standard:
When you tighten the flare nut with a wrench, you will reach a point where
the tightening torque will abrupt increase. Turn the flare nut beyond this point
by the angle shown in the table above.
Caution:
•
•
Always remove the connecting pipe from the ball valve and braze it outside the unit.
- Brazing the connecting pipe while it is installed will heat the ball valve and
cause trouble or gas leakage. The piping, etc. inside the unit may also be
burned.
Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator
oil to coat flares and flange connections. (For R407C models)
- The refrigerator oil will degrade if it is mixed with a large amount of mineral
oil.
8.3. Airtight test, evacuation, and refrigerant charging
1 Airtight test
Perform with the stop valve of the outdoor unit closed, and pressurize the
connection piping and the indoor unit from the service port provided on the
stop valve of the outdoor unit. (Always pressurize from both the liquid pipe and
the gas pipe service ports.)
[Fig. 8.3.1] (P.4)
A
Nitrogen gas
B
To indoor unit
C
System analyzer
D
Lo Knob
E
Hi Knob
F
Stop valve
G
Liquid pipe
H
Gas pipe
I
Outdoor unit
J
Service port
<For R407C models>
The method of conducting the airtight test is basically the same as for R22 models.
However, since the restrictions have a large affect on deterioration of the refrigerator oil, always observe them. Also, with nonazeotropic refrigerant (R407C, etc.),
gas leakage causes the composition to change and affects performance. Therefore, perform the airtightness test cautiously.
2. Pressurization using refrigerant gas and nitrogen gas
(1) Pressurizing to a gas pressure of approximately 0.2 MPa, pressurize to the design pressure
(2.94 MPa) using nitrogen gas.
However, do not pressurize at one time. Stop during pressurization and check that the pressure does not drop.
(2) Check for gas leaks by checking the flare connection parts, brazed parts, flanges, and other
parts which may leak using an R407C compatible electric leak detector.
(3) This test may be used together the with bubble type gas leak test.
• Do not use a refrigerant other than that indicated on the unit.
• Sealing with gas from a cylinder will cause the composition of
the refrigerant in the cylinder to change. (For R407C models)
• Use a pressure gauge, charge box, and other parts especially for
R407C. (For R407C models)
• An electric leak detector for R22 cannot detect leaks of R407C.
• Do not use a haloid torch. (Leaks cannot be detected.)
8.4. Thermal insulation of refrigerant piping
Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas
pipe separately with enough thickness heat-resistant polyethylene, so that no gap
is observed in the joint between indoor unit and insulating material, and insulating
materials themselves. When insulation work is insufficient, there is a possibility of
condensation drip, etc. Pay special attention to insulation work to ceiling plenum.
[Fig. 8.4.1] (P.5)
System analyzer
B
Lo Knob
C
Hi Knob
A
Steel wire
B
Piping
D
Ball valve
E
Liquid pipe
F
Gas pipe
C
Asphaltic oily mastic or asphalt
D
Heat insulation material A
G
Service port
H
Three-way joint
I
Valve
E
Outer covering B
J
Valve
K
Cylinder
L
Scale
M
Vacuum pump
[Fig. 8.3.3] (P.4)
Outdoor
Vinyl tape
Water-proof hemp cloth + Bronze asphalt
Water-proof hemp cloth + Zinc plate + Oily
paint
Note:
• When using polyethylene cover as covering material, asphalt roofing shall
not be required.
• No heat insulation must be provided for electric wires.
I
Indoor
Floor exposed
E
Adhesive + Heat - resistant polyethylene foam + Adhesive tape
[Fig. 8.4.2] (P.5)
Liquid pipe
B
Gas pipe
D
Finishing tape
E
Insulater
C
Electric wire
NL
A
[Fig. 8.4.3] (P.5)
Penetrations
[Fig. 8.4.4] (P.5)
<A> Inner wall (concealed)
<B> Outer wall
<C> Outer wall (exposed)
<D> Floor (fireproofing)
P
3 Refrigerant Charging (For R407C models)
Since the refrigerant used with the unit is nonazerotropic, it must be charged in
the liquid state. Consequently, when charging the unit with refrigerant from a
cylinder, if the cylinder does not have a syphon pipe, charge the liquid refrigerant by turning the cylinder upside-down as shown below. If the cylinder has a
syphon pipe like that shown in the figure at the right, the liquid refrigerant can
be charged with the cylinder standing upright. Therefore, give careful attention
to the cylinder specifications. If the unit should be charged with gas refrigerant,
replace all the refrigerant with new refrigerant. Do not use the refrigerant remaining in the cylinder.
Outer
covering B
Glass fiber + Steel wire
<E> Roof pipe shaft
<F> Penetrating portion on fire limit and boundary wall
A
Sleeve
B
Heat insulating material
C
Lagging
D
Caulking material
E
Band
F
Waterproofing laye
G
Sleeve with edge
H
Lagging material
I
Mortar or other incombustible caulking
J
Incombustible heat insulation material
GR
Note:
• Always add an appropriate amount of refrigerant. Also always seal the
system with liquid refrigerant. Too much or too little refrigerant will cause
trouble.
• Use a gauge manifold, charging hose, and other parts for the refrigerant
indicated on the unit.
• Use a graviometer. (One that can measure down to 0.1 kg.)
Heat
insulation
material A
F
A
When filling a gap with mortar, cover the penetration part with steel plate so that
the insulation material will not be caved in. For this part, use incombustible materials for both insulation and covering. (Vinyl covering should not be used.)
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[Fig. 8.3.2] (P.4)
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2 Evacuation
Evacuate with the ball valve of the outdoor unit closed and evacuate both the
connection piping and the indoor unit from the service port provided on the ball
valve of the outdoor unit using a vacuum pump. (Always evacuate from the
service port of both the liquid pipe and the gas pipe.) After the vacuum reaches
650 Pa [abs], continue evacuation for at least one hour or more.
* Never perform air purging using refrigerant.
GB
Restriction
• If a flammable gas or air (oxygen) is used as the pressurization
gas, it may catch fire or explode.
D
Airtight test procedure
1. Nitrogen gas pressurization
(1) After pressurizing to the design pressure (2.94 MPa) using nitrogen gas, let stand for about
one day. If the pressure does not drop, airtightness is good.
However, if the pressure drops, since the leaking point is unknown, the following bubble test
may also be performed.
(2) After the pressurization described above, spray the flare connection parts, brazed parts, flanges,
and other parts that may leak with a bubbling agent (Kyuboflex, etc.) and visually check for
bubbles.
(3) After the airtight test, wipe off the bubbling agent.
11
8.5. Pump down
Before removing air conditioners for transfer to another location, always close the
stop valve (for both liquid and gas pipes) located at the outdoor unit, then remove
the indoor and outdoor units. At this time, the refrigerant in the indoor unit will be
discharged. To minimize the refrigerant discharged, a pump down operation is
required. This operation collects the refrigerant present inside the air conditioner
and sends it into the heat exchanger located in the outdoor unit.
7 Switch the outdoor service switch [SW5-3] from ON to OFF.
8 Remove the gauge manifold valve and put the cap back onto each stop valve.
Notes:
1 Never carry out pump down operation if the amount of refrigerant inside
the indoor unit is larger than the amount of charge-less refrigerant.
Carrying out a pump down operation when the amount of refrigerant exceeds the amount of charge-less refrigerant will cause
an extreme pressure rise and may result in an accident.
Pump down procedure
1 Operate all indoor units in cooling mode and check that the operation mode
has changed to “COOL”. (Set the units so that cooling operation mode is activated during the pump down operation (when the TEST RUN button is pressed).)
2 Connect a gauge manifold valve (with pressure gauge) to the stop valve of the
gas pipe, to enable measurement of refrigerant pressure.
3 Check that the operation is stopped and switch the outdoor service switch
[SW5-3] (pump down switch) from OFF to ON.
5 After the cooling operation has been carried out for approximately five minutes, close the stop valve on the liquid pipe, with the cooling operation still ON.
(Pump down operation will start.)
6 When the reading of the pressure gauge reaches 0 to 0.1 MPa (0 to 1 kg/
cm2G) or when approximately 5 minutes have elapsed following the start of
the pump down operation, fully close the stop valve on the gas pipe and stop
the air conditioner by pressing the outdoor service switch [SW3-1,2] immediately.
D
GB
4 Press the outdoor service switch [SW3-1,2] (test run switch) to start operation
in cooling mode.
2 The service switch [SW5-3] can only be changed over while the compressor is stopped. If you have changed over this service switch even if
the compressor is still in operation, stop the operation, then retry to
change it over.
Do not continue to operate for a long time with the switch [SW5-3] set to
ON.
Make sure to switch it to OFF after pump down is completed.
3 Test run can be carried out when the test run switch [SW3-1] is ON. Switch
[SW3-2] is used to start and stop operation.
4 Time required for a pump down operation is three to five minutes after
the stop valve on the liquid pipe has been closed. (It depends on the
ambient temperature and amount of refrigerant inside the indoor unit.)
5 Ensure that the reading of the pressure gauge does not drop below 0
MPa (0 kg/cm2G). If it drops 0 MPa (0 kg/cm2G) (i.e. vacuum is created),
air will be drawn into the unit if there are any loose connections.
6 Even if the reading of the pressure gauge does not drop below 0 MPa (0
kg/cm2G), always stop the pump down operation within approximately
five minutes after the stop valve on the liquid pipe has been fully closed.
F
9. Wiring
When using shielded wiring, connect shield ground of the indoor unit transmission line to the earth screw ( ) and connect shield ground of the line between
outdoor units and the central control system transmission line to the shield (S)
terminal of the central control terminal block (TB7) shield (S) terminal. In addition, in the case of outdoor units whose power supply connector CN41 has
been replaced by CN40, the shield terminal (S) of terminal block (TB7) of the
central control system should also be connected to the ground ( ).
9.1. Caution
E
1 Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric
power company.
2 Wiring for control (hereinafter referred to as transmission line) shall be (5 cm or
more) apart from power source wiring so that it is not influenced by electric
noise from power source wiring. (Do not insert transmission line and power
source wire in the same conduit.)
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P
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I
3 Be sure to provide designated grounding work to outdoor unit.
[Fig. 9.2.1] (P.5)
A
B
Power source
Transmission line
4 Give some allowance to wiring for electrical part box of indoor and outdoor
units, because the box is sometimes removed at the time of service work.
2. Conduit mounting plates (ø27) are being provided. Pass the power supply and
transmission wires through the appropriate knock-out holes, then remove the
knock-out piece from the bottom of the terminal box and connect the wires.
5 Never connect the main power source to terminal block of transmission line. If
connected, electrical parts will be burnt out.
3. Fix power source wiring to terminal box by using buffer bushing for tensile
force (PG connection or the like).
6 Use 2-core shield cable for transmission line. If transmission lines of different
systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations.
9.3. Wiring transmission cables
7 Only the transmission line specified should be connected to the terminal block
for outdoor unit transmission.
(Transmission line to be connected with indoor unit : Terminal block TB3 for
transmission line, Other : Terminal block TB7 for centralized control)
Erroneous connection does not allow the system to operate.
1. Wiring transmission cables
8 In case to connect with the upper class controller or to conduct group operation in different refrigerant systems, the control line for transmission is required
between the outdoor units each other.
Connect this control line between the terminal blocks for centralized control.
(2-wire line with no polarity)
When conducting group operation in different refrigerant systems without connecting to the upper class controller, replace the insertion of the short circuit
connector from CN41 of one outdoor unit to CN40.
1 Types of control cables
•
Types of transmission cables: Shielding wire CVVS or CPEVS
•
Cable diameter: More than 1.25 mm2
•
Maximum wiring length: Within 200 m
2. Remote control cables
Kind of remote control cable
Cable diameter
Remarks
9 Group is set by operating the remote controller.
2 Wiring examples
9.2. Control box and connecting position of
wiring
•
1. Connect the indoor unit transmission line to transmission terminal block (TB3),
or connect the wiring between outdoor units or the wiring with the central control system to the central control terminal block (TB7).
12
2-core cable (unshielded)
0.3 to 1.25 mm2
When 10 m is exceeded, use cable with the
same specifications as (1) Transmission line
wiring
Controller name, symbol and allowable number of controllers.
Name
Outdoor unit controller
Indoor Unit Controller
Remote Controller
Symbol
OC
IC
RC
(M-NET)
MA
Allowable number of controllers
One to eight controllers for one OC
Maximum of 16 controllers for one
OC
Maximum of two per group
Example of a group operation system with multiple outdoor units (Shielding wires and address setting are
necessary.)
<Examples of Transmission Cable Wiring>
[Fig. 9.3.1] M-NET Remote Controller (P.5)
[Fig. 9.3.2] MA Remote Controller (P.5)
A
Group 1
B
C Group 5
Group 3
D
Shielded Wire
E
Sub Remote Controller
( ) Address
<Wiring Method and Address Settings>
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well for all OC-OC, and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1, M2
and terminal S on the transmission cable block of the indoor unit (IC).
c. Connect terminals 1 (M1) and 2 (M2) on the transmission cable terminal block of the indoor unit (IC) that has the most recent address within the same group to the
terminal block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor unit (OC).
e. On one outdoor unit only, change the jumper connector on the control panel from CN41 to CN40.
Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which the jumper connector was inserted into CN40 in Step
in the electrical component box.
above to the ground terminal
Unit
IC (Main)
Range
01 to 50
IC (Sub)
01 to 50
Outdoor Unit
M-NET R/C (Main)
M-NET R/C (Sub)
MA R/C
51 to 100
101 to 150
151 to 200
–
GB
g. Set the address setting switch as follows.
* To set the outdoor unit address to 100, the outdoor address setting switch must be set to 50.
Setting Method
Use the most recent address within the same group of indoor units
Use an address, other than that of the IC (Main) from among the units within the same group of indoor units. This must be
in sequence with the IC (Main)
Use the most recent address of all the indoor units plus 50
Set at an IC (Main) address within the same group plus 100
Set at an IC (Main) address within the same group plus 150
Unnecessary address setting (Necessary main/sub setting)
F
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.
D
f.
<Permissible Lengths>
1 M-NET Remote controller
Max length via outdoor units: L1+L2+L3+L4 and L1+L2+L3+L5 and L1+L2+L6+L7 = 500 m (1.25 mm2 or more)
•
Max transmission cable length: L1 and L3+L4 and L3+L5 and L6 and L2+L6 and L7 = 200 m (1.25 mm2 or more)
•
Remote controller cable length: r1, r2, r3, r4 = 10 m (0.3 to 1.25 mm2)
If the length exceeds 10 m, use a 1.25 mm2 shielded wire. The length of this section (L8) should be included in the calculation of the
maximum length and overall length.
E
•
•
Max length via outdoor unit (M-NET cable): L1+L2+L3+L4 and L1+L2+L6+L7 = 500 m (1.25 mm2 or more)
•
Max transmission cable length (M-NET cable): L1 and L3+L4 and L6 and L2+L6 and L7 = 200 m (1.25 mm2 or more)
•
Remote controller cable length:c1 and c1+c2 +c3 and c1+c2+c3+c4 = 200 m (0.3 to 1.25 mm2)
NL
I
2 MA Remote controller
9.4. Wiring of main power supply and equipment capacity
Schematic Drawing of Wiring (Example)
A
Switch (Breakers for Wiring and Current Leakage)
B
Outdoor Unit
C
Pull Box
D
Indoor Unit
P
[Fig. 9.4.1] (P.5)
Thickness of Wire for Main Power Supply and On/Off Capacities
Breaker for Current Leakage
GR
Breaker for
Wiring (NFB)
25 A
15 A
25 A 30 mA 0.1sec. or less
15 A 30 mA 0.1sec. or less
1. Use a separate power supply for the outdoor unit and indoor unit.
2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops.
Make sure the power-supply voltage does not drop more than 10 %.
4. Specific wiring requirements should adhere to the wiring regulations of the reglon.
5. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57). For example,
use wiring such as YZW.
Warning:
•
•
Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly, it may cause
heating or fire.
Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
•
•
Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric shock.
Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a malfunction
of unit or fire.
13
RU
Minimum Wire Thickness (mm2)
Branch
Ground
Main Cable
2.5
2.5
–
1.5
1.5
1.5
TR
Model
(P)125
Outdoor Unit
Indoor Unit
10. Test run
Phenomenon
Indoor unit does not the perform cooling (heating) operation.
The auto vane runs freely.
Display of remote controller
“Cooling (heating)” flashes
Fan setting changes during heating.
Normal display
Fan stops during heating operation.
Fan does not stop while operation has been
stopped.
No setting of fan while start SW has been
turned on.
Defrost display
No lighting
Indoor unit remote controller shows “HO” indicator for about two minutes when turning
ON universal power supply.
Drain pump does not stop while unit has been
stopped.
Drain pump continues to operate while unit
has been stopped.
“HO” flashes
TR
RU
GR
P
NL
I
E
F
D
GB
10.1. The following phenomena do not represent trouble (emergency)
14
Normal display
Heat ready
Light out
Cause
When another indoor unit is performing the heating (cooling) operation, the cooling (heating) operation is not performed.
Because of the control operation of auto vane, it may change over to horizontal
blow automatically from the downward blow in cooling in case the downward
blow operation has been continued for 1 hour. At defrosting in heating, hot adjusting and thermostat OFF, it automatically changes over to horizontal blow.
Ultra-low speed operation is commenced at thermostat OFF.
Light air automatically changes over to set value by time or piping temperature at
thermostat ON.
The fan is to stop during defrosting.
Fan is to run for 1 minute after stopping to exhaust residual heat (only in heating).
Ultra low-speed operation for 5 minutes after SW ON or until piping temperature
becomes 35°C, low speed operation for 2 minutes thereafter, and then set notch
is commenced. (Hot adjust control)
System is being driven.
Operate remote controller again after “HO” disappear.
After a stop of cooling operation, unit continues to operate drain pump for three
minutes and then stops it.
Unit continues to operate drain pump if drainage is generated, even during a
stop.
This product is designed and intended for use in the residential, commercial and light-industrial environment.
The product at hand is
based on the following
EU regulations:
•
•
Low Voltage Directive 73/23/EEC
Electromagnetic Compatibility Directive 89/
336/EEC
Please be sure to put the contact address/telephone number on
this manual before handing it to the customer.
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN
BG79S365H01
Printed in Japan