Mitsubishi Electric | Mr.Slim PUHZ-SHW-HA | Installation manual | Mitsubishi Electric Mr.Slim PUHZ-SHW-HA Installation manual

Air-Conditioners
PUHZ-SHW•HA
Air to Water Heat Pump
PUHZ-SHW•HA
PUHZ-SHW•KA
INSTALLATION MANUAL
FOR INSTALLER
For safe and correct use, read this manual and the indoor unit installation manual thoroughly before installing
the outdoor unit. English is original. The other languages versions are translation of the original.
INSTALLATIONSHANDBUCH
FÜR INSTALLATEURE
Für den sicheren und korrekten Gebrauch lesen Sie dieses Handbuch und das Installationshandbuch für das
Innengerät sorgfältig durch, bevor Sie die Außenanlage installieren. Das Original ist in Englisch. Die anderen
Sprachversionen sind vom Original übersetzt.
POUR L’INSTALLATEUR
Avant d’installer l’appareil extérieur, lire attentivement ce manuel ainsi que le manuel d’installation de l’appareil intérieur. L’anglais est l’original. Les versions fournies dans d’autres langues sont des traductions de
l’original.
VOOR DE INSTALLATEUR
Lees voor een veilig en correct gebruik eerst deze handleiding en de installatiehandleiding van de binnenapparaat
zorgvuldig door voordat u met het installeren van de buitenapparaat begint. Het Engels is het origineel. De andere
taalraat versies zijn vertalingen van het origineel.
PARA EL INSTALADOR
Para un uso correcto y seguro, lea detalladamente este manual y el manual de instalación de la unidad interior
antes de instalar la unidad exterior. El idioma original del documento es el inglés. Las versiones en los demás
idiomas son traducciones del original.
PER L’INSTALLATORE
Per un uso sicuro e corretto, leggere attentamente il presente manuale ed il manuale d’installazione dell’unità
interna prima di installare l’unità esterna. Il testo originale è redatto in lingua Inglese. Le altre versioni linguistiche
rappresentano traduzioni dell’originale.
MANUEL D’INSTALLATION
INSTALLATIEHANDLEIDING
MANUAL DE INSTALACIÓN
MANUALE DI INSTALLAZIONE
Για σωστή και ασφαλή χρήση, διαβάστε προσεκτικά αυτό το εγχειρίδιο καθώς και το εγχειρίδιο εγκατάστασης
της εσωτερικής μονάδας, πριν εγκαταστήσετε την εξωτερική μονάδα. Η γλώσσα του πρωτοτύπου είναι η αγγλική. Οι εκδόσεις άλλων γλωσσών είναι μεταφράσεις του πρωτοτύπου.
PARA O INSTALADOR
Para uma utilização segura e correcta, leia atentamente este manual e o manual de instalação da unidade
interior antes de instalar a unidade exterior. O idioma original é o inglês. As versões em outros idiomas são
traduções do idioma original.
TIL INSTALLATØREN
MANUAL DE INSTALAÇÃO
INSTALLATIONSMANUAL
Læs af sikkerhedshensyn denne manual samt manualen til installation af indendørsenheden grundigt, før du
installerer udendørsenheden. Engelsk er originalen. De andre sprogversioner er oversættelser af originalen.
INSTALLATIONSMANUAL
FÖR INSTALLATÖREN
Läs den här bruksanvisningen och inomhusenhetens installationshandbok noga innan utomhusenheten installeras så att den används på ett säkert och korrekt sätt. Engelska är originalspråket. De övriga språkversionerna
är översättningar av originalet.
Güvenli ve doğru kullanım için, dış üniteyi monte etmeden önce bu kılavuzu ve iç unite montaj kılavuzunu dikkatlice
okuyun. Aslı İngilizce’dir. Diğer dillerdeki sürümler aslının çevirisidir.
Для обеспечения безопасной и надлежащей эксплуатации внимательно прочтите данное руководство
и руководство по установке внутреннего прибора перед установкой наружного блока. Языком оригинала является английский. Версии на других языках являются переводом оригинала.
FOR MONTØREN
For å sikre trygg og riktig bruk skal denne håndboken samt installasjonshåndboken for innendørsenheten leses
grundig igjennom før enheten installeres. Engelsk er originalspråket. De andre språkversjonene er oversettelser av originalen.
ASENTAJALLE
Turvallisen ja asianmukaisen käytön varmistamiseksi lue tämä opas sekä sisäyksikön asennusopas huolellisesti ennen yksikön asentamista. Alkuperäiskieli on englanti. Muut kieliversiot ovat alkuperäisen käännöksiä.
INSTALLERINGSHÅNDBOK
ASENNUSOPAS
01_BH79D359H01_en.indd 1
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2013/07/31 11:40:57
Contents
1. Safety precautions.......................................................................................... 2
2. Installation location......................................................................................... 3
3. Installing the outdoor unit............................................................................... 5
4. Installing the refrigerant piping....................................................................... 5
5. Drainage piping work...................................................................................... 9
6. Water piping work........................................................................................... 9
7. Electrical work.................................................................................................. 9
8. Test run.......................................................................................................... 11
9. Initial settings for refrigerant leakage detection function ............................... 11
10. Special Functions......................................................................................... 12
11. System control.............................................................................................. 13
Note: This symbol mark is for EU countries only.
This symbol mark is according to the directive 2002/96/EC Article 10 Information for users and Annex IV.
Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and reused.
This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste.
Please, dispose of this equipment at your local community waste collection/recycling centre.
In the European Union there are separate collection systems for used electrical and electronic product.
Please, help us to conserve the environment we live in!
Caution:
• Do not vent R410A into the Atmosphere:
• R410A is a Fluorinated Greenhouse gas, covered by the Kyoto Protocol, with a Global Warming Potential (GWP)=1975.
1. Safety precautions
►Before installing the unit, make sure you read all the “Safety precautions”.
►Please report to or take consent by the supply authority before connection to the system.
► Equipment complying with IEC/EN 61000-3-12
(PUHZ-SHW80/112VHA)
► PUHZ-SHW230YKA
“This equipment complies with IEC 61000-3-12 provided that the shortcircuit power Ssc is greater than or equal to Ssc (*1) at the interface point
between the user’s supply and the public system. It is the responsibility
of the installer or user of the equipment to ensure, by consulation with
the distribution network operator if necessary, that the equipment is
connected only to a supply with a short-circuit power Ssc greater than or
equal to Ssc (*1)”
Ssc (*1)
Model
PUHZ-SHW230YKA
Ssc (MVA)
1.35
Warning:
• T
he unit must not be installed by the user. Ask a dealer or an authorized
technician to install the unit. If the unit is installed incorrectly, water leakage, electric shock, or fire may result.
• For installation work, follow the instructions in the Installation Manual and
use tools and pipe components specifically made for use with R410A refrigerant. The R410A refrigerant in the HFC system is pressurized 1.6 times
the pressure of usual refrigerants. If pipe components not designed for
R410A refrigerant are used and the unit is not installed correctly, the pipes
may burst and cause damage or injuries. In addition, water leakage, electric shock, or fire may result.
• The unit must be installed according to the instructions in order to minimize the risk of damage from earthquakes, typhoons, or strong winds. An
incorrectly installed unit may fall down and cause damage or injuries.
• The unit must be securely installed on a structure that can sustain its
weight. If the unit is mounted on an unstable structure, it may fall down
and cause damage or injuries.
• If the outdoor unit is installed in a small room, measures must be taken to
prevent the refrigerant concentration in the room from exceeding the safety limit in the event of refrigerant leakage. Consult a dealer regarding the
appropriate measures to prevent the allowable concentration from being
exceeded. Should the refrigerant leak and cause the concentration limit to
be exceeded, hazards due to lack of oxygen in the room may result.
•Ventilate the room if refrigerant leaks during operation. If refrigerant comes
into contact with a flame, poisonous gases will be released.
• All electric work must be performed by a qualified technician according to
local regulations and the instructions given in this manual. The units must
be powered by dedicated power lines and the correct voltage and circuit
breakers must be used. Power lines with insufficient capacity or incorrect
electrical work may result in electric shock or fire.
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes, to connect the refrigerant pipes. If the pipes are not connected correctly, the unit will not be properly grounded and electric shock may result.
Warning:
Describes precautions that must be observed to prevent danger of injury or
death to the user.
Caution:
Describes precautions that must be observed to prevent damage to the unit.
After installation work has been completed, explain the “Safety Precautions,” use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
: Indicates a part which must be grounded.
Warning:
Carefully read the labels affixed to the main unit.
• U
se only specified cables for wiring. The wiring connections must be made
securely with no tension applied on the terminal connections. Also, never
splice the cables for wiring (unless otherwise indicated in this document).
Failure to observe these instructions may result in overheating or a fire.
• The terminal block cover panel of the outdoor unit must be firmly attached.
If the cover panel is mounted incorrectly and dust and moisture enter the
unit, electric shock or fire may result.
•When installing or relocating, or servicing the outdoor unit, use only the
specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it
with any other refrigerant and do not allow air to remain in the lines.
If air is mixed with the refrigerant, then it can be the cause of abnormal
high pressure in the refrigerant line, and may result in an explosion and
other hazards.
The use of any refrigerant other than that specified for the system will
cause mechanical failure or system malfunction or unit breakdown. In the
worst case, this could lead to a serious impediment to securing product
safety.
• Use only accessories authorized by Mitsubishi Electric and ask a dealer
or an authorized technician to install them. If accessories are incorrectly
installed, water leakage, electric shock, or fire may result.
•Do not alter the unit. Consult a dealer for repairs. If alterations or repairs
are not performed correctly, water leakage, electric shock, or fire may result.
•The user should never attempt to repair the unit or transfer it to another
location. If the unit is installed incorrectly, water leakage, electric shock, or
fire may result. If the outdoor unit must be repaired or moved, ask a dealer
or an authorized technician.
• After installation has been completed, check for refrigerant leaks. If refrigerant leaks into the room and comes into contact with the flame of a heater
or portable cooking range, poisonous gases will be released.
1.1. Before installation
Caution:
•Do not use the unit in an unusual environment. If the outdoor unit is installed in areas exposed to steam, volatile oil (including machine oil), or
sulfuric gas, areas exposed to high salt content such as the seaside, or
areas where the unit will be covered by snow, the performance can be significantly reduced and the internal parts can be damaged.
• Do not install the unit where combustible gases may leak, be produced,
flow, or accumulate. If combustible gas accumulates around the unit, fire
or explosion may result.
01_BH79D359H01_en.indd 2
•The outdoor unit produces condensation during the heating operation.
Make sure to provide drainage around the outdoor unit if such condensation is likely to cause damage.
• When installing the unit in a hospital or communications office, be prepared for noise and electronic interference. Inverters, home appliances,
high-frequency medical equipment, and radio communications equipment
can cause the outdoor unit to malfunction or breakdown. The outdoor unit
may also affect medical equipment, disturbing medical care, and communications equipment, harming the screen display quality.
2013/07/31 11:40:58
1. Safety precautions
1.2. Before installation (relocation)
Caution:
• B
e extremely careful when transporting or installing the units. 2 or more
persons are needed to handle the unit, as it weighs 20 kg or more. Do not
grasp the packaging bands. Wear protective gloves to remove the unit
from the packaging and to move it, as you can injure your hands on the
fins or the edge of other parts.
•Be sure to safely dispose of the packaging materials. Packaging materials,
such as nails and other metal or wooden parts may cause stabs or other
injuries.
• T
he base and attachments of the outdoor unit must be periodically
checked for looseness, cracks or other damage. If such defects are left uncorrected, the unit may fall down and cause damage or injuries.
• Do not clean the outdoor unit with water. Electric shock may result.
• Tighten all flare nuts to specification using a torque wrench. If tightened
too much, the flare nut can break after an extended period and refrigerant
can leak out.
1.3. Before electric work
Caution:
• B
e sure to install circuit breakers. If not installed, electric shock may result.
• For the power lines, use standard cables of sufficient capacity. Otherwise,
a short circuit, overheating, or fire may result.
• When installing the power lines, do not apply tension to the cables. If the
connections are loosened, the cables can snap or break and overheating
or fire may result.
• B
e sure to ground the unit. Do not connect the ground wire to gas or water
pipes, lightning rods, or telephone grounding lines. If the unit is not properly grounded, electric shock may result.
• Use circuit breakers (ground fault interrupter, isolating switch (+B fuse),
and molded case circuit breaker) with the specified capacity. If the circuit
breaker capacity is larger than the specified capacity, breakdown or fire
may result.
1.4. Before starting the test run
Caution:
• T
urn on the main power switch more than 12 hours before starting operation. Starting operation just after turning on the power switch can severely
damage the internal parts. Keep the main power switch turned on during
the operation season.
•Before starting operation, check that all panels, guards and other protective parts are correctly installed. Rotating, hot, or high voltage parts can
cause injuries.
• Do not touch any switch with wet hands. Electric shock may result.
• D
o not touch the refrigerant pipes with bare hands during operation. The
refrigerant pipes are hot or cold depending on the condition of the flowing
refrigerant. If you touch the pipes, burns or frostbite may result.
• After stopping operation, be sure to wait at least five minutes before turning off the main power switch. Otherwise, water leakage or breakdown may
result.
1.5. Using R410A refrigerant outdoor unit
Caution:
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes, to connect the refrigerant pipes. Make sure the insides of the pipes
are clean and do not contain any harmful contaminants such as sulfuric
compounds, oxidants, debris, or dust. Use pipes with the specified thickness. (Refer to 4.1.) Note the following if reusing existing pipes that carried
R22 refrigerant.
- Replace the existing flare nuts and flare the flared sections again.
- Do not use thin pipes. (Refer to 4.1.)
• Store the pipes to be used during installation indoors and keep both ends of
the pipes sealed until just before brazing. (Leave elbow joints, etc. in their
packaging.) If dust, debris, or moisture enters the refrigerant lines, oil deterioration or compressor breakdown may result.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration
oil applied to the flared sections. If mineral oil is mixed in the refrigeration
oil, oil deterioration may result.
• Do not use refrigerant other than R410A refrigerant. If another refrigerant is
used, the chlorine will cause the oil to deteriorate.
• Use the following tools specifically designed for use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant. Contact your
nearest dealer for any questions.
Tools (for R410A)
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Flare tool
Size adjustment gauge
Vacuum pump adapter
Electronic refrigerant charging scale
• B
e sure to use the correct tools. If dust, debris, or moisture enters the refrigerant lines, refrigeration oil deterioration may result.
•Do not use a charging cylinder. If a charging cylinder is used, the composition of the refrigerant will change and the efficiency will be lowered.
1.6. Accessories of outdoor unit (Fig. 1-1) (SHW230)
he parts show in the left are the accessories of this unit, which are affixed to the
T
inside of the service panel.
1 Joint pipe.........×1
Fig. 1-1
2. Installation location
2.1. Refrigerant pipe (Fig. 2-1)
A
D
►Check that the difference between the heights of the indoor and outdoor
units, the length of refrigerant pipe, and the number of bends in the pipe
are within the limits shown below.
B
Models
E
C
3
01_BH79D359H01_en.indd 3
BHeight
difference
Max. 30 m
Max. 30 m
C Number of bends
(one way)
Max. 15
Max. 15
•Height difference limitations are binding regardless of which unit, indoor or outdoor, is positioned higher.
Fig. 2-1
+
30
SHW80, 112, 140
SHW230
APipe length
(one way)
Max. 75 m
Max. 80 m
D Indoor unit
E Outdoor unit
30
95
0
2013/07/31 11:40:59
2. Installation location
■ SHW80, 112, 140
33
0
2.2. Choosing the outdoor unit installation location
•Avoid locations exposed to direct sunlight or other sources of heat.
•Select a location from which noise emitted by the unit will not inconvenience
neighbors.
•Select a location permitting easy wiring and pipe access to the power source
and indoor unit.
•Avoid locations where combustible gases may leak, be produced, flow, or accumulate.
•Note that water may drain from the unit during operation.
•Select a level location that can bear the weight and vibration of the unit.
•Avoid locations where the unit can be covered by snow. In areas where heavy
snow fall is anticipated, special precautions such as raising the installation location or installing a hood on the air intake must be taken to prevent the snow from
blocking the air intake or blowing directly against it. This can reduce the airflow
and a malfunction may result.
•Avoid locations exposed to oil, steam, or sulfuric gas.
•Use the transportation handles of the outdoor unit to transport the unit. If the unit
is carried from the bottom, hands or fingers may be pinched.
0
+3
0
1350
95
17
5
60
0
37
0
■ SHW230
2.3. Outline dimensions (Outdoor unit) (Fig. 2-2)
33
0+
25
10
50
2.4. Ventilation and service space
2.4.1. Windy location installation
1338
When installing the outdoor unit on a rooftop or other location unprotected from
the wind, situate the air outlet of the unit so that it is not directly exposed to strong
winds. Strong wind entering the air outlet may impede the normal airflow and a
malfunction may result.
The following shows three examples of precautions against strong winds.
1Face the air outlet towards the nearest available wall about 50 cm away from the
wall. (Fig. 2-3)
2Install an optional air guide if the unit is installed in a location where strong winds
from a typhoon, etc. may directly enter the air outlet. (Fig. 2-4)
22
5
60
0
37
AAir protection guide
3Position the unit so that the air outlet blows perpendicularly to the seasonal wind
direction, if possible. (Fig. 2-5)
0
Fig. 2-2
BWind direction
2.4.2. When installing a single outdoor unit (Refer to the last page)
Minimum dimensions are as follows, except for Max., meaning Maximum dimensions, indicated.
Refer to the figures for each case.
1Obstacles at rear only (Fig. 2-6)
2Obstacles at rear and above only (Fig. 2-7)
3Obstacles at rear and sides only (Fig. 2-8)
4Obstacles at front only (Fig. 2-9)
*When using the optional air outlet guides, the clearance is 500 mm or more.
5Obstacles at front and rear only (Fig. 2-10)
A
Fig. 2-3
*When using the optional air outlet guides, the clearance is 500 mm or more.
6Obstacles at rear, sides, and above only (Fig. 2-11)
•Do not install the optional air outlet guides for upward airflow.
2.4.3. When installing multiple outdoor units (Refer to the last page)
Leave 10 mm space or more between the units.
1Obstacles at rear only (Fig. 2-12)
2Obstacles at rear and above only (Fig. 2-13)
Fig. 2-4
•No more than 3 units must be installed side by side. In addition, leave space as shown.
•Do not install the optional air outlet guides for upward airflow.
3Obstacles at front only (Fig. 2-14)
*When using the optional air outlet guides, the clearance is 1000 mm or more.
4Obstacles at front and rear only (Fig. 2-15)
*When using the optional air outlet guides, the clearance is 1000 mm or more.
5Single parallel unit arrangement (Fig. 2-16)
*When using the optional air outlet guides installed for upward airflow, the clearance is
1000 mm or more.
6Multiple parallel unit arrangement (Fig. 2-17)
*When using the optional air outlet guides installed for upward airflow, the clearance is
1500 mm or more.
7Stacked unit arrangement (Fig. 2-18)
•The units can be stacked up to 2 units high.
•No more than 2 stacked units must be installed side by side. In addition, leave space as
shown.
B
Fig. 2-5
01_BH79D359H01_en.indd 4
2013/07/31 11:41:01
3. Installing the outdoor unit
(mm)
•Be sure to install the unit in a sturdy, level surface to prevent rattling noises
during operation. (Fig. 3-1)
<Foundation specifications>
Foundation bolt
Thickness of concrete
Length of bolt
Weight-bearing capacity
Max. 30
M10 (3/8")
120 mm
70 mm
320 kg
•Make sure that the length of the foundation bolt is within 30 mm of the bottom
surface of the base.
•Secure the base of the unit firmly with four-M10 foundation bolts in sturdy locations.
Installing the outdoor unit
•Do not block the vent. If the vent is blocked, operation will be hindered and
breakdown may result.
•In addition to the unit base, use the installation holes on the back of the unit to
attach wires, etc., if necessary to install the unit. Use self-tapping screws (ø5 ×
15 mm or less) and install on site.
Warning:
• T
he unit must be securely installed on a structure that can sustain its
weight. If the unit is mounted on an unstable structure, it may fall down
and cause damage or injuries.
• The unit must be installed according to the instructions in order to minimize the risk of damage from earthquakes, typhoons, or strong winds. An
incorrectly installed unit may fall down and cause damage or injuries.
M10 (3/8") bolt
Base
As long as possible.
Vent
Set deep in the ground
■ SHW80, 112, 140
■ SHW230
600
600
Min. 460
600
175
330
25
Min. 10 175
950
225
Fig. 3-1
Min. 10
225
25
Min. 360
330
370
600
■ SHW230
370
■ SHW80, 112, 140
1050
4. Installing the refrigerant piping
4.1. Precautions for devices that use R410A refrigerant
• R
efer to 1.5. for precautions not included below on using outdoor unit with
R410A refrigerant.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil
applied to the flared sections.
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,
to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses
specified in the table to the below. Make sure the insides of the pipes are
clean and do not contain any harmful contaminants such as sulfuric compounds, oxidants, debris, or dust.
Always apply no-oxidation brazing when brazing the pipes, otherwise, the
compressor will be damaged.
Warning:
When installing or relocating, or servicing the outdoor unit, use only the
specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with
any other refrigerant and do not allow air to remain in the lines.
If air is mixed with the refrigerant, then it can be the cause of abnormal high
pressure in the refrigerant line, and may result in an explosion and other hazards.
The use of any refrigerant other than that specified for the system will cause
mechanical failure or system malfunction or unit breakdown. In the worst
case, this could lead to a serious impediment to securing product safety.
Pipe size (mm) [6.35 [9.52 [12.7 [15.88 [19.05 [22.2 [25.4 [28.58
Thickness (mm)
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
• D
o not use pipes thinner than those specified above.
• Use 1/2 H or H pipes if the diameter is 19.05 mm or larger.
01_BH79D359H01_en.indd 5
2013/07/31 11:41:04
4. Installing the refrigerant piping
4.2. Connecting pipes (Fig. 4-1)
B
45°± 2°
øA
•When commercially available copper pipes are used, wrap liquid and gas pipes
with commercially available insulation materials (heat-resistant to 100°C or
more, thickness of 12 mm or more).
•Be sure to separate thermal insulation for gas and liquid refrigerant pipes.
•The indoor parts of the drain pipe should be wrapped with polyethylene foam
insulation materials (specific gravity of 0.03, thickness of 9 mm or more).
•Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening flare nut. A
•Use 2 wrenches to tighten piping connections. B
•Use leak detector or soapy water to check for gas leaks after connections are
completed.
•Apply refrigerating machine oil over the entire flare seat surface. C
•Use the flare nuts for the following pipe size. D
R0
90° ± 0.5°
A
.4
R0
.8
45op 2o
øA
C
R0
90o p0,5o
A Flare cutting dimensions
B Flare nut tightening torque
,4~
R0
Fig. 4-1
Gas side
Liquid side
,8
D
Flare dimensions
øA dimensions (mm)
8.7 - 9.1
12.8 - 13.2
16.2 - 16.6
19.3 - 19.7
23.6 - 24.0
B(Fig. 4-1)
Copper pipe O.D.
(mm)
ø6.35
ø6.35
ø9.52
ø12.7
ø12.7
ø15.88
ø15.88
ø19.05
Flare nut O.D.
(mm)
17
22
22
26
29
29
36
36
Tightening torque
(N·m)
14 - 18
34 - 42
34 - 42
49 - 61
68 - 82
68 - 82
100 - 120
100 - 120
A
A Die
B Copper pipe
A
Fig. 4-2
B
Fig. 4-3
SHW230
[25.4
[9.52
Table 1 (Fig. 4-2)
Copper pipe O.D.
(mm)
ø6.35 (1/4")
ø9.52 (3/8")
ø12.7 (1/2")
ø15.88 (5/8")
ø19.05 (3/4")
A (mm)
Flare tool for R22·R407C
Flare tool for R410A
Clutch type
0 - 0.5
1.0 - 1.5
0 - 0.5
1.0 - 1.5
0 - 0.5
1.0 - 1.5
1.0 - 1.5
0 - 0.5
0 - 0.5
1.0 - 1.5
3Use the following procedure for connecting the gas-side piping. (Fig.4-3) (SHW230)
1 Braze the E Joint pipe provided to the outdoor unit using locally procured brazing materials and C Local piping without oxygen.
2 Connect the E Joint pipe to the gas-side Stop valve.
Use 2 wrenches to tighten the flare nut.
* If order is reversed, refrigerant leak occurs because of the part damaging by
brazing fire.
4.3. Refrigerant piping (Fig. 4-4)
AStop valve
BSeal section
CLocal piping
DDouble spanner section
EJoint pipe
FPipe cover
SHW80, 112, 140
[15.88
[9.52
•When bending the pipes, be careful not to break them. Bend radii of 100 mm to
150 mm are sufficient.
•Make sure the pipes do not contact the compressor. Abnormal noise or vibration
may result.
1Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
2Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Applied on site).
•When usual pipe sealing is used, refer to Table 1 for flaring of R410A refrigerant
pipes.
The size adjustment gauge can be used to confirm A measurements.
A(Fig. 4-1)
Copper pipe O.D.
(mm)
ø6.35
ø9.52
ø12.7
ø15.88
ø19.05
Pipe size (mm)
Pipe size (mm)
AFront piping cover
BPiping cover
Fig. 4-4
CStop valve
DService panel
EBend radius : 100 mm -150 mm
Remove the service panel D (3 screws) and the front piping cover A (2 screws)
and rear piping cover B (2 screws: SHW80 - 140) (4 screws: SHW230).
1Perform refrigerant piping connections for the indoor/outdoor unit when the outdoor unit’s stop valve is completely closed.
2Vacuum-purge air from the indoor unit and the connection piping.
3After connecting the refrigerant pipes, check the connected pipes and the indoor
unit for gas leaks. (Refer to 4.4 Refrigerant pipe airtight testing method)
4A high-performance vacuum pump is used at the stop valve service port to maintain a vacuum for an adequate time (at least one hour after reaching –101 kPa
(5 Torr)) in order to vacuum dry the inside of the pipes. Always check the degree
of vacuum at the gauge manifold. If there is any moisture left in the pipe, the degree of vacuum is sometimes not reached with short-time vacuum application.
After vacuum drying, completely open the stop valves (both liquid and gas) for
the outdoor unit. This completely links the indoor and outdoor refrigerant circuits.
• If the vacuum drying is inadequate, air and water vapor remain in the refrigerant circuits and can cause abnormal rise of high pressure, abnormal drop of
low pressure, deterioration of the refrigerating machine oil due to moisture, etc.
•If the stop valves are left closed and the unit is operated, the compressor and
control valves will be damaged.
•Use a leak detector or soapy water to check for gas leaks at the pipe connection sections of the outdoor unit.
•Do not use the refrigerant from the unit to purge air from the refrigerant lines.
•After the valve work is completed, tighten the valve caps to the correct torque:
20 to 25 N·m (200 to 250 kgf·cm).
Failure to replace and tighten the caps may result in refrigerant leakage. In
addition, do not damage the insides of the valve caps as they act as a seal to
prevent refrigerant leakage.
5Use sealant to seal the ends of the thermal insulation around the pipe connection sections to prevent water from entering the thermal insulation.
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4. Installing the refrigerant piping
A
4.4. Refrigerant pipe airtight testing method (Fig.4-5)
B
C
(1)Connect the testing tools.
•Make sure the stop valves A B are closed and do not open them.
•Add pressure to the refrigerant lines through the service port C of the liquid
stop valve A.
(2)Do not add pressure to the specified pressure all at once; add pressure little by
little.
1Pressurize to 0.5 MPa (5 kgf/cm2G), wait 5 minutes, and make sure the pressure does not decrease.
2Pressurize to 1.5 MPa (15 kgf/cm2G), wait 5 minutes, and make sure the
pressure does not decrease.
3Pressurize to 4.15 MPa (41.5 kgf/cm2G) and measure the surrounding temperature and refrigerant pressure.
(3)If the specified pressure holds for about 1 day and does not decrease, the pipes
have passed the test and there are no leaks.
•If the surrounding temperature changes by 1°C, the pressure will change by
about 0.01 MPa (0.1 kgf/cm2G). Make the necessary corrections.
(4)If the pressure decreases in steps (2) or (3), there is a gas leak. Look for the
source of the gas leak.
H
D
E
F
I
G
A Stop valve <Liquid side>
B Stop valve <Gas side>
C Service port
D Open/Close section
E Local pipe
F Sealed, same way for gas side
G Pipe cover
H Do not use a wrench here.
Refrigerant leakage may result.
I Use 2 wrenches here.
Fig. 4-5
(1)
4.5. Stop valve opening method
(2)
Fig. 4-6
A Valve
B Unit side
C Handle
DCap
E Local pipe side
F Pipe cover
G Service port
H Wrench hole
Fig. 4-7
I Double spanner section
(Do not apply a spanner other than to this section.
Doing so would cause coolant leaks.)
J Seal section
(Seal the end of the heat insulation material at
the pipe connection section with whatever seal
material you have on hand so that water does not
infiltrate the heat insulation material.)
The stop valve opening method varies according to the outdoor unit model. Use the
appropriate method to open the stop valves.
(1)Gas side (Fig. 4-6)
1Remove the cap, pull the handle toward you and rotate 1/4 turn in a counterclockwise direction to open.
2Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its original position.
(2)Liquid side (Fig. 4-7)
1Remove the cap and turn the valve rod counterclockwise as far as it will go with
the use of a 4 mm hexagonal wrench. Stop turning when it hits the stopper.
(ø9.52: Approximately 10 revolutions)
2Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its original position.
Refrigerant pipes are protectively wrapped
•The pipes can be protectively wrapped up to a diameter of ø90 before or after
connecting the pipes. Cut out the knockout in the pipe cover following the groove
and wrap the pipes.
Pipe inlet gap
•Use putty or sealant to seal the pipe inlet around the pipes so that no gaps remain. (If the gaps are not closed, noise may be emitted or water and dust will
enter the unit and breakdown may result.)
B
A
C
D
* The figure to the left is an example only.
The stop valve shape, service port position,
etc., may vary according to the model.
* Turn section A only.
(Do not further tighten sections A and B
together.)
C Charge hose
D Service port
Warning:
When installing the unit, securely connect the refrigerant pipes before starting the compressor.
Fig. 4-8
4.6. Addition of refrigerant
•Additional charging is not necessary if the pipe length does not exceed 30 m.
•If the pipe length exceeds 30 m, charge the unit with additional R410A refrigerant according to the permitted pipe lengths in the chart below.
*When the unit is stopped, charge the unit with the additional refrigerant
through the liquid stop valve after the pipe extensions and indoor unit have
been vacuumized.
When the unit is operating, add refrigerant to the gas check valve using a
safety charger. Do not add liquid refrigerant directly to the check valve.
Model
Permitted pipe
length
Permitted vertical
difference
SHW80, 112, 140
-75 m
-30 m
For single combination
(1 water heat exchanger)
SHW230
For twin / triple /
quadruple combination
(2-4 water heat exchangers)
*After charging the unit with refrigerant, note the added refrigerant amount on
the service label (attached to the unit).
Refer to the “1.5. Using R410A refrigerant outdoor unit” for more information.
•Be careful when installing multiple units. Connecting to an incorrect indoor unit
can lead to abnormally high pressure and have a serious effect on operation
performance.
Additional refrigerant charging amount
31 - 40 m
41 - 50 m
51 - 60 m
61 - 75 m
0.6 kg
1.2 kg
1.8 kg
2.4 kg
Model
30 m and less
Precautions when using the charge valve (Fig.4-8)
Do not tighten the service port too much when installing it, otherwise, the valve
core could be deformed and become loose, causing a gas leak.
After positioning section B in the desired direction, turn section A only and tighten
it.
Do not further tighten sections A and B together after tightening section A.
31 - 40 m
A+B+C+D
Amount of additional refrigerant charge (kg)
41 - 50 m
51 - 60 m
61 - 70 m
71 - 80 m
5.6 kg
7.0 kg
1.4 kg
2.8 kg
4.2 kg
0.9 kg
1.8 kg
Calculate the amount of additional refrigerant
charge using formula provided next page
No additional
charge necessary
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4. Installing the refrigerant piping
When length exceeds 50 m for twin / triple / quadruple combination (Only SHW230)
When the total length of the piping exceeds 50 m, calculate the amount of additional charge based on the following requirements.
Note: If the calculation produces a negative number (i.e. a “minus” charge), of if calculation results in an amount that is less than the “Additional charage amount for 50 m”,
perform the additional charge using the amount shown in “Additional charge amount for 50 m”.
Amount of additional
charge
=
(kg)
Additional charge amount
for 50 meters
Main piping:
Liquid line size
ø12.7 overall length ×
0.17
+
(m) × 0.17 (kg/m)
Main piping:
Liquid line size
ø9.52 overall length ×
0.14 (Gas line: ø25.4)
+
(m) × 0.14 (kg/m)
Branch piping:
Liquid line size
ø9.52 overall length ×
+
0.05 (Gas line: ø15.88)
Branch piping:
Liquid line size
ø6.35 overall length ×
0.02
(m) × 0.05 (kg/m)
–
4.3 (kg)
(m) × 0.02 (kg/m)
1.8 kg
Max. 1m
Indoor unit
Outdoor unit
Main piping
Branch piping
Multi distribution
pipe (option)
Outdoor unit : SHW230
Water heat exchanger 1
Water heat exchanger 2
Water heat exchanger 3
A: ø9.52 ... 65 m
B: ø9.52 ... 5 m
C: ø9.52 ... 5 m
D: ø9.52 ... 5 m
Main piping ø9.52 is A = 65 m
Branch piping ø9.52 is B + C + D = 15 m
Therefore, the amount of additional charge is: 65 × 0.14 + 15 × 0.05 - 4.3 = 5.6 (kg)
(Fractions are rounded up)
Fig. 4-9
4.7. Precautions when reusing existing R22 refrigerant pipes
• Refer to the flowchart below to determine if the existing pipes can be used and if it is necessary to use a filter dryer.
• If the diameter of the existing pipes is different from the specified diameter, refer to technological data materials to confirm if the pipes can be used.
Measure the existing pipe thickness and
check for damage.
The existing pipe thickness does not meet
specifications or the pipes are damaged.
The existing pipe thickness meets specifications and the pipes are not damaged.
▼
Check if the existing outdoor unit can operate.
▼
After operating the cooling system for about 30
minutes, do a pump down work.
* If the existing outdoor unit cannot operate, use
a refrigerant recovery device to collect the refrigerant.
▼
Disconnect the existing outdoor unit from the
pipes.
* In case existing pipes were used for gas or oil
heat pump systems, be sure to clean the pipes.
▼
Attach the new outdoor unit
▼
Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
▼
Test run
▼
The existing pipes cannot be reused.
Use new pipes.
* Refer to 8.2.
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4. Installing the refrigerant piping
4.8. For twin/triple/quadruple combination (Fig. 4-10)
<Limits of refrigerant piping installation>
• When this unit is used as a FREE COMPO MULTI unit, install the refrigerant
piping with the restrictions indicated in the drawing on the left. In addition, if the
restrictions are going to be exceeded, or if there are going to be combinations of
indoor and outdoor units, refer to installation instructions for the indoor unit for
details about the installation.
A Indoor unit
B Outdoor unit
C Multi distribution pipe (option)
D Height difference
(Indoor unit Outdoor unit) Max. 30 m
E Height difference
(Indoor unit Indoor unit) Max. 1 m
A: Main piping
B, C:Branch piping
Max. 20 m
SHW112, 140
Permissible total
piping length
A+B+C
75 m and less
Charge-less
piping length
A+B+C
30 m and less
Outdoor unit
SHW112, 140
|B-C|
8 m and less
No. of bends
Within 15
Outdoor unit
SHW112, 140 : A+B+C ≤ 75 m
Fig. 4-10
5. Drainage piping work
Outdoor unit drainage pipe connection
PUHZ-SHW series is not connectable with a drainage pipe because of cold district
specification.
6. Water piping work (Only for Air to Water Heat Pump)
Minimum water quantity
Following water quantity is required in the water circuit.
Model
SHW80
SHW112
SHW140
SHW230
Minimum water quantity (L)
60
80
100
160
7. Electrical work
7.1. Outdoor unit (Fig. 7-1, Fig. 7-2)
SHW80, 112V
1 Remove the service panel.
2 Wire the cables referring to the Fig. 7-1 and the Fig. 7-2.
L N
S1
S2
S3
A
B
L N
A Indoor unit
B Outdoor unit
C Remote controller
D Main switch (Breaker)
E Earth
S1 S2 S3
C
D
S1 S2 S3
SHW112 - 230Y
E
For Power
L1 L2 L3 N
For Power
S1 S2 S3
D
Fig. 7-2
B
A
A
C
E
E
A
E
Fig. 7-1
Note: Only for Air to Water Heat Pump
When multiple indoor units (Hydro boxes) are connected to the outdoor
unit, wire the PCB of either one of the indoor unit and the outdoor unit (S1,
S2, S3).
It is impossible to connect the PCBs of multiple indoor units to the outdoor
unit.
F
G
H
I
*
Terminal block
Indoor/Outdoor connection terminal block (S1, S2, S3)
Service panel
Clamp
Clamp the cables so that they do not contact the center of the service panel or the gas valve.
Note :
If the protective sheet for the electrical box is removed during servicing, be sure to
reinstall it.
Caution:
Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
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7. Electrical work
7.2. Field electrical wiring
SHW80V
SHW112V
~/N (single), 50 Hz, 230 V
~/N (single), 50 Hz, 230 V
Outdoor unit model
SHW112, 140Y
SHW230Y
Outdoor unit input capacity Main switch (Breaker)
Outdoor unit power supply
*1
32 A
3 × Min. 4
40 A
3 × Min. 6
3N~ (3 ph 4-wires),
50 Hz, 400 V
16 A
5 × Min. 1.5
Indoor unit-Outdoor unit
*2
3 × 1.5 (Polar)
3 × 1.5 (Polar)
3 × 1.5 (Polar)
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*2
*3
1 × Min. 1.5
2 × 0.3 (Non-polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
3N~ (3 ph 4-wires),
50 Hz, 400 V
32 A
5 × Min. 4
Cable length 50m:3×4 (Polar)/
Cable length 80m:3×6 (Polar)
1 × Min. 2.5
2 × 0.3 (Non-polar)
*4
AC 230 V
AC 230 V
AC 230 V
AC 230 V
*4
*4
*4
AC 230 V
DC 24 V
DC 12 V
AC 230 V
DC 24 V
DC 12 V
AC 230 V
DC 24 V
DC 12 V
AC 230 V
DC 24 V
DC 12 V
Circuit rating
Wiring
Wire No. ×
size (mm2)
Outdoor unit power supply
*1.A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV).
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
*2.(SHW80 - 140)
Max. 45 m
If 2.5 mm2 used, Max. 50 m
If 2.5 mm2 used and S3 separated, Max. 80 m
(SHW230)
Max. 80 m Total Max. including all indoor/indoor connection is 80 m.
• Use one cable for S1 and S2 and another for S3 as shown in the picture.
*3.The 10 m wire is attached in the remote controller accessory.
*4.The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied.
Power supply
Isolator
A-Control
Outdoor Unit
3 poles isolator
S1
S1
S2
S2
S3
S3
A-Control
Indoor Unit
Warning:
· In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between
power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when
the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
· In below - 20°C condition, it needs at least 4hr stand by to operate in order to warm the electrical parts.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
INDOOR-OUTDOOR CONNECTING CABLE (SHW230)
Cross section of cable
Round
Flat
Flat
Round
Wire size (mm2)
Number of wires
2.5
3
Polarity
Clockwise : S1-S2-S3
*Pay attention to stripe of yellow and green
2.5
3
Not applicable
(Because center wire has no cover finish)
1.5
4
From left to right : S1-Open-S2-S3
(18)
*3
2.5
4
Clockwise : S1-S2-S3-Open
*Connect S1 and S3 to the opposite angle
(30)
*4
*1 :Power supply cords of appliances shall not be lighter than design 60245 IEC or
227 IEC.
*2 :In case that cable with stripe of yellow and green is available.
*3 :In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm2.
*4 :In case of regular polarity connection (S1-S2-S3).
*5 :In the flat cables are connected as this picture, they can be used up to 30 m.
L (m)*6
(30)
*2
Not applicable
*5
(3C Flat cable × 2)
S1
S2
S3
*6 :Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or
materials, etc.
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication error if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point.
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8. Test run
8.1. Before test run
►After completing installation and the wiring and piping of the indoor and
outdoor units, check for refrigerant leakage, looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in
the supply.
►Use a 500-volt megohmmeter to check that the resistance between the
power supply terminals and ground is at least 1 MΩ.
►Do not carry out this test on the control wiring (low voltage circuit) terminals.
Warning:
Do not use the outdoor unit if the insulation resistance is less than 1 MΩ.
Insulation resistance
After installation or after the power source to the unit has been cut for an extended
period, the insulation resistance will drop below 1 MΩ due to refrigerant accumulating in the compressor. This is not a malfunction. Perform the following procedures.
1.Remove the wires from the compressor and measure the insulation resistance of
the compressor.
2.If the insulation resistance is below 1 MΩ, the compressor is faulty or the resistance dropped due the accumulation of refrigerant in the compressor.
3.After connecting the wires to the compressor, the compressor will start to warm
up after power is supplied. After supplying power for the times indicated below,
measure the insulation resistance again.
8.2. Test run
ON
OFF
ON
ON
Caution:
• T
he compressor will not operate unless the power supply phase connection is correct.
• 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.
►The followings must be checked as well.
•The outdoor unit is not faulty. LED1 and LED2 on the control board of the outdoor unit flash when the outdoor unit is faulty.
•Both the gas and liquid stop valves are completely open.
•A protective sheet covers the surface of the Dip switch panel on the control
board of the outdoor unit. Remove the protective sheet to operate the Dip
switches easily.
•A few seconds after the compressor starts, a clanging noise may be heard from
the inside of the outdoor unit. The noise is coming from the check valve due to
the small difference in pressure in the pipes. The unit is not faulty.
The test run operation mode cannot be changed by Dip switch SW4-2 during
the test run. (To change the test run operation mode during the test run, stop
the test run by Dip switch SW4-1. After changing the test run operation mode,
resume the test run by switch SW4-1.)
8.2.1. Using SW4 in outdoor unit
SW4-1
SW4-2
SW4-1
SW4-2
•The insulation resistance drops due to accumulation of refrigerant in the compressor. The resistance will rise above 1 MΩ after the compressor is warmed
up for 4 hours.
(The time necessary to warm up the compressor varies according to atmospheric conditions and refrigerant accumulation.)
•To operate the compressor with refrigerant accumulated in the compressor,
the compressor must be warmed up at least 12 hours to prevent breakdown.
4.If the insulation resistance rises above 1 MΩ, the compressor is not faulty.
Cooling operation
Heating operation
* After performing the test run, set SW4-1 to OFF.
•After power is supplied, a small clicking noise may be heard from the inside of
the outdoor unit. The electronic expansion valve is opening and closing. The unit
is not faulty.
8.2.2. Using remote controller
Refer to the indoor unit installation manual.
Note : Occasionally, vapor that is made by the defrost operation may seem
as if smoke come up from the outdoor unit.
9. Initial settings for refrigerant leakage detection function (only for air-conditioners)
Remote control button positions
A
C
This outdoor unit can detect refrigerant leakage which may happen during a long
period of use. In order to enable the leakage detection, the following
settings are required to let the unit memorize the initial conditions (initial learning).
B
D
Operation mode
Compressor information Outdoor unit information Indoor unit information
Caution:
Make sure to perform the “8. Test run” and confirm the unit works without
any problems, before starting the following settings.
Confirm
► How to select the “Refrigerant Leakage Detection” mode
Detection is possible regardless the unit’s operation (ON or OFF).
1 Press TEST button for more than three seconds to switch to the maintenance
mode.
[Display A ] MAINTENANCE
Activate/cancel maintenance mode
Fig. 9-1
[Display A ]
Refrigerant
leakage detection
(initial teaching)
GAS LEAK
TEST START
Refrigerant leakage
detection judgment
GAS LEAK
JUDGE
Fig. 9-2
[Display D ] Waiting for stabilization
Press
Stabilized
Fig. 9-3
► How to start the initial learning
2 Press CLOCK
button and select the [GAS LEAK TEST START] (Fig. 9-2)
* The initial learning for the leakage detection is always done once after the new
installation or the data reset.
After 45 minutes
FILTER
( ) button to confirm. (Fig. 9-3)
How to finish the initial learning
Once the unit’s operation is stabilized, the initial learning is completed.
Press TEST button for more than three seconds to cancel the initial learning.
The initial learning can also be cancelled by pressing
ON/OFF button.
* Refer to the Technical Manual for the refrigerant leakage detection judgment method.
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10. Special Functions
A
C
Orange
X
X
Brown
SW1
By performing the following modification, operation noise of the outdoor unit can be
reduced by about 3-4 dB.
The low noise mode will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
•The ability varies according to the outdoor temperature and conditions, etc.
1Complete the circuit as shown when using the external input adapter (PAC-SC36NA-E). (Option)
2SW1 ON: Low noise mode
SW1 OFF: Normal operation
CNDM
1
Red
10.1. Low noise mode (on-site modification) (Fig. 10-1)
D
3
Fig. 10-1
A Circuit diagram example (low noise mode)
B On-site arrangement
C External input adapter (PAC-SC36NA-E)
X: Relay
D Outdoor unit control board
E Max. 10 m
F Power supply for relay
A
Y
C
D
Orange
CNDM
1
Brown
SW2
Red
Y
3
Fig. 10-2
ACircuit diagram example (Demand function)
BOn-site arrangement
C External input adapter (PAC-SC36NA-E)
Y: Relay
D Outdoor unit control board
E Max. 10 m
F Power supply for relay
10.3. Refrigerant collecting (pump down)
When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedure below so that no refrigerant is released into the atmosphere.
1Turn off the power supply (circuit breaker).
2Connect the low-pressure valve on the gauge manifold to the charge plug (lowpressure side) on the outdoor unit.
3Close the liquid stop valve completely.
4Supply power (circuit breaker).
*When power is supplied, make sure that “CENTRALLY CONTROLLED” is not
displayed on the remote controller. If “CENTRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.
*Start-up of the indoor-outdoor communication takes about 3 minutes after the
power (circuit breaker) is turned on. Start the pump-down operation 3 to 4
minutes after the power (circuit breaker) is turned on.
5Perform the refrigerant collecting operation (cooling test run).
*Push the pump-down SWP switch (push-button type) on the control board of
the outdoor unit. The compressor and ventilators (indoor and outdoor units)
start operating (refrigerant collecting operation begins). (LED1 and LED2 on
the control board of the outdoor unit are lit.)
*Only push the pump-down SWP switch if the unit is stopped. However, even
if the unit is stopped and the pump-down SWP switch is pushed less than 3
minutes after the compressor stops, the refrigerant collecting operation cannot be performed. Wait until the compressor has been stopped for 3 minutes
and then push the pump-down SWP switch again.
6Fully close the ball valve on the gas pipe side of the outdoor unit when the pressure gauge on the gauge manifold shows 0.05 to 0 MPa [Gauge] (approx. 0.5 to
0 kgf/cm2) and quickly stop the outdoor unit.
Note:
When the Dip SW9-1 on the control board of the outdoor unit is ON, set Dip
SW9-1 to OFF.
10.2. Demand function (on-site modification) (Fig. 10-2)
(only for air-conditioners)
By performing the following modification, energy consumption can be reduced to 0
–100% of the normal consumption.
The demand function will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
1Complete the circuit as shown when using the external input adapter (PAC-SC36NA-E). (Option)
2 By setting SW7-1 and SW7-2 on the control board of the outdoor unit, the energy consumption (compared to the normal consumption) can be limited as shown
below.
SW7-1
OFF
ON
OFF
SW7-2
OFF
OFF
ON
Energy consumption (SW2 ON)
0% (Stop)
50%
75%
*If the pump-down SWP switch is pushed again, the unit stops.
*Because the unit automatically stops in about 3 minutes when the refrigerant
collecting operation is completed (LED1 off, LED2 lit), be sure to quickly close
the gas ball valve. However, if LED1 is lit, LED2 is off, and the unit is stopped,
open the liquid stop valve completely, close the valve completely after 3 minutes or more have passed, and then repeat step 5. (Open the gas ball valve
completely.)
*If the refrigerant collecting operation has been completed normally (LED1 off,
LED2 lit), the unit will remain stopped until the power supply is turned off.
*Note that when the extension piping is very long with a large refrigerant
amount, it may not be possible to perform a pump-down operation. In this
case, use refrigerant recovery equipment to collect all of the refrigerant in the
system.
7Turn off the power supply (circuit breaker), remove the gauge manifold, and then
disconnect the refrigerant pipes.
Warning:
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
• If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the pressure in the refrigeration
cycle could become extremely high if air is drawn in, causing the pipes to
burst, personal injury, etc.
10.4 Setting the temperature of the ZUBADAN flash injection function
The ZUBADAN flash injection function achieves high heating performance at low outdoor temperatures.
• The SW9-3 and SW9-4 on the control board of the outdoor unit allow setting of the temperature available for the ZUBADAN flash injection function as shown in the below
table.
SW9-3
OFF
OFF
ON
ON
SW9-4
OFF
ON
OFF
ON
Outdoor temperatures
≤ 3˚C (Initial setting)
≤ 0˚C
≤ –3˚C
≤ –6˚C
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11. System control
11.1. Air-Conditioners
E SW 1 - 3 to 6
ON
OFF
F SW 1 - 3 to 6
ON
OFF
G SW 1 - 3 to 6
ON
OFF
3 4 5 6
3 4 5 6
A E
A F
TB1
TB4
TB4
B
TB4
2
2 TB5
1
C
A
SW1
Function table
G
TB1
B
D
TB4
B
B
TB4
B
TB5
1
Fig. 11-1
11.2. Air to Water Heat Pump
Set the refrigerant address using the Dip switch of the outdoor unit.
SW1 Function Setting
SW1 Setting
ON
OFF
ON
OFF
ON
OFF
Refrigerant
address
3 4 5 6 7
3 4 5 6 7
3 4 5 6 7
SW1 Setting
00
ON
OFF
01
ON
OFF
02
ON
OFF
* Set the refrigerant address using the Dip switch of the outdoor unit.
1Wiring from the Remote Control
This wire is connected to TB5 (terminal board for remote controller) of the indoor
unit (non-polar).
2When a Different Refrigerant System Grouping is Used.
Up to 16 refrigerant systems can be controlled as one group using the slim MA remote controller.
Note:
In single refrigerant system (twin/triple), there is no need of wiring 2.
3 4 5 6
TB1
TB5
A Outdoor unit
B Indoor unit
C Master remote controller
D Subordinate remote controller
E Standard 1:1 (Refrigerant address = 00)
F Simultaneous twin (Refrigerant address = 01)
G Simultaneous triple (Refrigerant address = 02)
3 4 5 6 7
3 4 5 6 7
3 4 5 6 7
Refrigerant
address
TB4
B
<SW1>
ON
OFF
1 2 3 4 5 6
Function
Operation according to switch setting
ON
OFF
1 Compulsory
Start
Normal
defrosting
2 Error history
SW1
Clear
Normal
clear
function
3 Refrigerant Settings for outdoor unit addresses
settings
4 system ad- 0 to 15
5 dress setting
6
Note:
a)Up to 6 units can be connected.
b)Select one single model for all units.
c)For Dip switch settings for indoor unit, refer to the indoor unit’s installation manual.
03
04
05
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