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Si39-303 Refrigerant Piping
Installation Manual 173
6.3 Example of Connection
Example of connection
(Connection of 8 indoor units Heat pump system)
One outdoor
unit installed
(RXYQ5~16)
Branch with refnet joint
Branch with refnet joint and refnet header
Branch with refnet header
a
ABCDEFG
ABC
D
EFG
bcdef
g
hi j kl mn
1234567
8
H2
H1
P
Outdoor unit
REFNET joint (A-G)
Indoor units (1-8)
H1
H1
H2
H2
a a
i
b
a
i
b
cde f
g
h
123456
Outdoor unit
Outdoor unit
REFNET joint (A • B)
Indoor units (1-8)
cde f
g
h
123456
Indoor units (1-8)
Refnet header
Refnet header
k
j
78
k
j
78
H1
H2
H2
Outdoor unit
Refnet header
Indoor units (1-8)
cde
f
g
h
b
1234567
8
8
ab c d e f
g
8
H2
H1
H3 H3
P
Indoor units (1-8)
Outdoor unit
REFNET joint (A-G)
REFNET joint (A • B)
hi j kl mn
1234567
First outdoor
branch
H1
H3
a
Outdoor unit
Refnet header
Indoor units (1-8)
cde
f
g
h
b
1234567
When multiple
outdoor units
installed
(RXYQ18~)
∗ If the system capacity is RXYQ18 or more, re-read to
the first outdoor branch as seen from the indoor unit.
Maximum
allowable
length
Between outdoor
and indoor units
Between outdoor branch and indoor unit
(Only for RXYQ18 or more)
Between outdoor and indoor units
Between indoor and indoor units
Between outdoor and outdoor units
Actual pipe length
Actual pipe length
Actual pipe length
Difference in height
Difference in height
Difference in height
Equivalent length
Total extension length
Pipe length between outdoor and indoor units ≤ 150m
Example unit 8: a + b + c + d + e + f + g + p ≤ 150m
Example unit 8: b + c + d + e + f + g + p ≤ 40m
Equivalent pipe length between outdoor and indoor units ≤ 175m (assume equivalent pipe length of refnet joint to be 0.5m, that of refnet header to be 1m, calculation purposes)
Piping length from outdoor branch to outdoor unit ≤ 10m Approximately length: max 13m
Difference in height between outdoor and indoor units (H1) ≤ 50m (Max 40m if the outdoor unit is below)
Difference in height between adjacent indoor units (H2) ≤ 15m
Difference in height between outdoor unit (main) and outdoor unit (sub) (H3) ≤ 5m
Pipe length from first refrigerant branch kit (either refnet joint or refnet header ) to indoor unit ≤ 40m
Total piping length from outdoor unit* to all indoor units ≤ 300m
Allowable
height
length
Allowable length after the branch
Refrigerant branch kit selection
Pipe size selection
Example unit 8: a + i ≤ 150m
Example unit 6: a + b + h ≤ 150m, unit 8: a + i + k ≤ 150m
Example unit 8: i ≤ 40m Example unit 6: b + h ≤ 40m, unit 8:i + k ≤ 40m
r
t
s
Outdoor unit
r ≤ 10m (Approximately length: max 13m)
s ≤ 10m (Approximately length: max 13m)
t ≤ 10m (Approximately length: max 13m)
Refrigerant branch kits can only be
used with R410A.
How to select the refnet joint
• When using refnet joints at the first branch counted from the outdoor unit side.
Choose from the following table in accordance with the capacity of the outdoor unit.
Piping between outdoor unit and refrigerant branch kit (part A)
• Match to the size of the connection piping on the outdoor unit.
Outdoor unit connection piping size
Piping between refrigerant branch kits
• Choose from the following table in accordance with the total capacity of all the
indoor units connected below this.
• Do not let the connection piping exceed the refrigerant piping size chosen by
general system model name.
For an outdoor unit multi installation (RXYQ18~48MY1B), make the
settings in accordance with the following figure.
How to calculate the additional refrigerant
to be charged
If a negative result is gotten for R from the formula at right, no refrigerant
needs to be added.
Additional referigerant to be charged R (Kg)
R should be rounded off in units of 0.1Kg.
Piping between outdoor branch
and indoor unit (part C)
Oil-equalizing line (part D)
Piping between outdoor branches (part B)
Piping between outdoor unit and refrigerant
branch kit (part A)
RXYQ5 type
RXYQ8, 10 type
RXYQ12~22 type
RXYQ24 type~
KHRP26M22T
KHRP26M33T
KHRP26M72T
KHRP26M73T + KHRP73TP
• For refnet joints other than the first branch, select the proper branch kit model based on the total capacity index.
< 200
200 ≤ x< 290
290 ≤ x< 640
640 <
KHRP26M22T
KHRP26M33T
KHRP26M72T
KHRP26M73T + KHRP73TP
How to select the refnet header
•
Choose from the following table in accordance with the total capacity of all the indoor units connected below the REFNET header.
• Note: 250 type cannot be connected below the REFNET header.
< 200
< 290
290 ≤ x< 640
640 <
KHRP26M22H (Max. 4 kit)
KHRP26M33H (Max. 8 kit)
KHRP26M72H (Max. 8 kit)
KHRP26M73H (Max. 8 kit) + KHRP26M73HP
How to choose an outdoor branch kit (needed if the outdoor unit capacity type is RXYQ18 or more.)
• Choose from the following table in accordance with the number of outdoor units.
2 unit
3 unit
BHFP22M90 + BHFP22M90P
BHFP22M135 + BHFP22M135P
example in case of refnet joint C; indoor units 3 + 4 + 5 + 6 + 7 + 8
example in case of refnet joint B indoor units 7 + 8,
example in case of refnet header; indoor units 1 + 2 + 3 + 4 + 5 + 6
example in the case of refnet header; indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
Example of downstream indoor units
φ9.5 × 0.80
φ12.7 × 0.80
φ15.9 × 0.99
φ19.1 × 0.80
RXYQ5 type
RXYQ8 type
RXYQ10 type
RXYQ12, 14, 16 type
RXYQ18~22 type
RXYQ24 type
RXYQ26~34 type
RXYQ36~48 type
φ15.9 × 0.99
φ19.1 × 0.80
φ22.2 × 0.80
φ28.6 × 0.99
φ34.9 × 1.21
φ41.3 × 1.43
Gas pipe
indoor capacity index
Piping size (outer diameter x minimum thickness)
Liquid pipe
φ9.5 × 0.80
φ12.7 × 0.80
φ15.9 × 0.99
φ19.1 × 0.80
< 200
200 ≤ x< 290
290 ≤ x< 420
420 ≤ x< 640
640 ≤ x< 920
920 <
φ15.9 × 0.99
φ22.2 × 0.80
φ28.6 × 0.99
φ34.9 × 1.21
φ41.3 × 1.43
Piping between outdoor branches (part B)
• Choose from the following table in accordance with the total capacity of all the
outdoor units connected above this.
Between refrigerant branch kit and indoor unit
• Pipe size for direct connection to indoor unit must be the same as the
connection size of indoor unit.
φ6.4 × 0.80
φ9.5 × 0.80
20, 25, 32, 40, 50 type
63, 80, 100, 125 type
200 type
250 type
φ12.7 × 0.80
φ15.9 × 0.99
φ19.1 × 0.80
φ22.2 × 0.80
Piping between outdoor branch and indoor unit (part C)
Gas pipe
outdoor capacity type
Piping size (outer diameter x minimum thickness)
Liquid pipe
φ12.7 × 0.80
φ9.5 × 0.80
RXYQ8 type
RXYQ10 type
RXYQ12, 14, 16 type
φ19.1 × 0.80
φ22.2 × 0.80
φ28.6 × 0.99
a: φ19.1 × 30m
b: φ15.9 × 10m
c: φ09.5 × 10m
d: φ9.5 × 10m
e: φ9.5 × 10m
f : φ9.5 × 10m
g: φ16.4 × 10m
h: φ16.4 × 20m
i : φ12.7 × 10m
j : φ16.4 × 10m
k: φ16.4 × 19m
Oil-equalizing line (Only for RXYQ18 or more) (part D)
φ6.4 × 0.80
Piping size (outer diameter x minimum thickness)
φ15.9 × 0.99
φ19.1 × 0.80
< 22HP
24HP
26HP <
φ28.6 × 0.99
φ34.9 × 1.21
(Unit:mm)
(Unit:mm)
(Unit:mm)
(Unit:mm)
(Unit:mm)
(Unit:mm)
R= +
indoor capacity index
Refrigerant branch kit name
Number of outdoor units
Branch kit name
Outdoor unit capacity type Refrigerant branch kit name
indoor capacity index
Refrigerant branch kit name
Gas pipe
Outdoor unit capacity type
Piping size (outer diameter x minimum thickness)
Liquid pipe
Gas pipe
outdoor capacity index
Piping size (outer diameter x minimum thickness)
Liquid pipe
Gas pipe
indoor capacity type
Piping size (outer diameter x minimum thickness)
Liquid pipe
+ +
++_
If the outdoor unit is
RXYQ34MY1B and the
piping lengths are as at
right
R= 30 0.25 + 10 0.17 + 10 0.11 + 40 0.054 + 49 0.022
-
6 =7.538
ba c+d+e+f g+h+j+ki
7.5
NOTE:
Total length (m)
of liquid piping
size at φ22.2
×0.35
Total length (m)
of liquid piping
size at φ19.1
×0.25
Total length (m)
of liquid piping
size at φ15.9
×0.17
Total length (m)
of liquid piping
size at φ12.7
×0.11
Total length (m)
of liquid piping
size at φ9.5
×
0.054
Total length (m)
of liquid piping
size at φ6.4
×
0.022
Model name
RXYQ5~16MY1B
RXYQ18~32MY1B
RXYQ34~48MY1B
0 kg
3 kg
6 kg
Amount of refrigerant
Example for refrigerant branch using refnet joint and refnet header for RXYQ34MY1B
A
B
AB
i
Содержание
- Design installation testing instruction 1
- R410a heat pump 50hz 1
- Si39 303 1
- Preface 2
- Appendix 06 3
- Caution for refrigerant leaks 02 3
- Hand over to customer 05 3
- Installation 4 3
- Introduction 55 3
- Part 1 general information 3
- Part 2 installation manual 53 3
- Points to bear in mind at the system design 3
- Product outline 3
- System system system system r410a plus series r410a plus series r410a plus series r410a plus series 3
- Test operation 2 3
- Before operation 91 4
- Caution for refrigerant leaks 94 4
- Field wiring 80 4
- Main components 61 3 selection of location 62 4 inspecting and handling the unit 64 5 unpacking and placing the unit 65 6 refrigerant piping 67 4
- Operation range 06 6 operation procedure 07 4
- Optimum operation 14 8 following symptoms are not air conditioner troubles 15 4
- Part 3 operation manual 97 4
- Safety cautions 99 2 what to do before operation 02 3 remote controller and changeover switch name and function of each switch and display 03 4 warning 05 4
- Part 4 precautions for new refrigerant r410a 21 5
- Precautions for new refrigerant r410a 22 5
- Troubleshooting 18 5
- Appendix 06 7
- Caution for refrigerant leaks 02 7
- Hand over to customer 05 7
- Installation 4 7
- Part 1 part 1 part 1 part 1 general information general information general information general information 7
- Points to bear in mind at the system design 7
- Product outline 7
- Test operation 2 7
- 220 240v 50hz 8
- 380 415v 50hz 8
- Indoor units 8
- Model names of indoor outdoor units 8
- Outdoor units inverter series 8
- Product outline 8
- V 60hz y1b 8
- External appearance 9
- Indoor units 9
- Outdoor units 10
- 48hp are realized by combining 8 10 12 14 and 16hp 11
- Combination of outdoor units 11
- Connectable indoor units number and capacity 12
- General information 12
- Model selection 12
- Product outline si39 303 12
- Vrv ii heat pump series 12
- Connectable indoor unit 13
- In some models it is not possible to connect the maximum number of connectable indoor units select models so the total capacity of connected indoor units conforms to the specification 13
- Indoor unit capacity 13
- The total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit 13
- Use the above tables to determine the capacities of indoor units to be connected make sure the total capacity of indoor units connected to each outdoor unit is within the specified value kw 13
- Points relating to the performance of the air conditioning units 14
- Points to bear in mind at the system design 14
- How these installation problems affect an equipment are shown below 15
- The analysis of major installation problems experienced during the year of 1988 is shown below 15
- The installation is of vital importance 15
- Striking a balance between system installation and general construction work comprehensive flow chart 16
- At the contract drawing stage the following points are critical 17
- Contract drawing 17
- General information 11 17
- Objectives include 17
- Points to bear in mind when preparing the contract drawings 17
- Si39 303 points to bear in mind at the system design 17
- System and should be used as a reference during this stage of the work 17
- The contents of the drawings should not be subject to subsequent alteration 17
- The drawings should be easily comprehensible to those carrying out the work 17
- The following is a list of the main points to be considered when preparing contract drawings for the 17
- The following points should be borne in mind when preparing the contract drawings from the original drawings and the execution drawings the contract drawings for the air conditioning system are blueprints for the performance of the necessary work which are drawn up on the basis of the original drawings in such a way that a working balance is achieved between the specific requirements of each individual aspect of the work 17
- Example system list 18
- For details on field settings and centralized control group no refer to the installation manual and system reference materials 18
- General information 18
- In addition to the design of the appropriate this system configuration it is also essential that the control system be made amply clear if the system is designed and installed without a clear comprehensive plan then problems are inevitably going to occur during the test run servicing too will become much more time consuming than necessary however if control circuit diagrams are prepared along with the contract drawings in order to make the total system clearly visible then the essential points relating to the electrical connections will be easily understood the test run will go off without a hitch and the whole system will be rendered fully effective 18
- Main considerations in preparation of control circuit diagrams 18
- Mark each outdoor unit with a code 2 add field settings and data for outdoor units and outdoor unit no if using sequential start 3 add the model number of each indoor unit connected to each refrigerant circuit 4 assign each indoor unit a code 5 fill in the location of each indoor unit 6 group indoor units controlled by one or two remote controllers group or individual control 7 assign central group nos if using centralized control 8 add field settings and optional equipment for indoor units 9 add unit no if making separate field settings for each indoor unit under group control 18
- Points to bear in mind at the system design si39 303 18
- Step 1 compiling a system list 18
- With the vrv ii r410a heat pump series unit no is determined through automatic addressing therefore readout unit nos after activating the power 18
- Step 2 preparation of the control circuit diagrams 19
- Installation 20
- Step by step installation procedure 20
- Positioning of the pipe holes 21
- Positioning the insert 21
- Sleeve and insert work 21
- Work involved in individual operations and points to be borne in mind 21
- Installation of indoor unit 22
- Positioning 22
- General information 17 23
- Operational steps 23
- Refrigerant pipe work 23
- Si39 303 installation 23
- The 3 principles of refrigerant piping 23
- The 3 principles of refrigerant piping must be strictly observed 23
- Method for replacing nitrogen brazing 24
- Covering of refrigerant pipes 25
- Refrigerant pipe flushing 26
- Choice of materials for refrigerant piping 27
- Size of refrigerant piping 27
- Brazing flow becomes poor 28
- C brazing the multi system requires only copper copper jointing and the jointing method is explained below 28
- General information 28
- Installation si39 303 28
- Table 1 correlation of nozzle tip and size of refrigeration piping 28
- The r410a heat pump rxyq m series uses a wide range of piping sizes you should therefore be careful when selecting the nozzle tip if a small nozzle tip is used for brazing piping of large diameters such as 28
- The use of hard solder is essential 28
- The values in the table above are for type b torch french 28
- Brazing 29
- A stiffened pipe must always be annealed at least once prior to the flaring work b a pipe cutter must be used to cut the pipe a large pipe cutter must be used where the pipe has a large diameter when cutting a pipe which is too big for the pipe cutter a metal saw may be used but care must be taken to ensure that the debris from sawing does not get into the pipe c set the flaring tool to make sure the flare size remains within the prescribed limits 30
- Check that there is no superficial damage to the surface of the flare 30
- Compared to previous refrigerants the components of a hfc refrigerant is small r410a also has a higher pressure than other refrigerants therefore in order to strengthen the intensity of the form and size of the flare section used for r410a class 2 apparatus unlike the specification of the conventional refrigerants it was set up with different standards when carrying out flare processing use a new rank compatible flare tool or a conventional flare tool 30
- D coat the inner and outer surface of the flare with refrigerator oil ester or ether oil this ensures that the flare nut passes smoothly preventing the pipe from twisting do not use suniso 4gs oil 30
- Flare connection 30
- Flare gauge adapter corresponding to the new rank 30
- General information 30
- Important points 1 burrs should be carefully removed 2 2 spanners should be used to grip the flare nuts 3 the flare nut must be inserted before starting the flaring operation 4 the appropriate amount of torque should be used to tighten the flare nut 30
- Installation si39 303 30
- Mm 72mm 1 0 mm each 30
- New rank compatible flare tool 30
- Size from the dice surface to the copper tip in mm 30
- Standard torques for tightening flare nut 30
- When using the later use a flare gauge to take out the pipe from the gauge bar adjust it and then carry out the flare processing 30
- Flaring procedure 31
- After the work is finished make sure to check that is no gas leak 32
- General information 32
- Installation si39 303 32
- Not recommendable but in case of emergency 32
- When you keep on tightening the flare nut with a spanner there is a point where the tightening torque suddenly increases from that position further tighten the flare nut the angle shown below 32
- You must use a torque wrench but if you are obliged to install the unit without a torque wrench you may follow the installation method mentioned below 32
- A the flange sheet surface should be clean and undamaged clean any dirt away with a cloth and check that there has been no damage b coat the flange sheet surface with refrigeration oil ester or ether oil and then insert the packing do not use suniso oil 33
- C tighten the bolts in opposite corners first to ensure that the connection is true 33
- Flange connection 33
- General information 27 33
- Important points 1 only clean refrigeration oil should be used to coat the flange i e free from dirt or water 2 the correct amount of torque should be applied when tightening the flange bolts 33
- Iso hexagonal bolt 33
- Si39 303 installation 33
- Standard torques for tightening screws and bolts 33
- Essential points of thermal insulation 34
- Materials 34
- Thermal insulation work refrigerant piping 34
- Air tight test 35
- Essential points of testing maintaining pressure over a period 35
- As for the air tight test the setup of devices shown in the following figure is recommended with considerations given to vacuum drying and refrigerant additional charging which are operation steps following the air tightness test 36
- Check 1 where pressure falls while carrying out steps 1 to 3 described on previous page 36
- Check 2 when searching for a minor leak or when there has been a fall in pressure while the system has been fully pressurized but the source of the leak cannot be traced 1 release the nitrogen until the pressure reaches 0 mpa 2 increase pressure to 1 mpa using gaseous flon gas r410a nitrogen and flon gas mixed 3 search for the source of the leak using a leak detector 4 if the source of the leak still cannot be traced then repressurize with nitrogen up to 3 0mpa and check again the pressure must not be increased to more than 3 0mpa 36
- Check by ear listen for the sound of a major leak 36
- Check by hand check for leak by feeling around jointed sections with hand 36
- Checking for leaks 36
- General information 36
- Important points 1 where the lengths of piping involved are particularly long then the air tight test should be carried out block by block example 1 indoor side 2 indoor side vertical pipes 3 indoor side vertical pipes outdoor side 36
- In order to conduct the air tight test with stop valves of 8 gas side 10 liquid side and 15 oil equalization piping and those of the refrigerant and vacuum pump all closed then open the nitrogen gas stop valve 7 valve a and 16 valve b while adjusting the nitrogen gas pressure regulating valve thus increasing the pressure 36
- Installation si39 303 36
- One outdoor unit installed in case of rxyq5 16my1b 36
- Setup of air light test 36
- Snoop bubbles will reveal the presence of a leak 36
- Soap and water check 36
- When multiple outdoor units installed in case of rxyq18 48my1b 36
- General information 31 37
- Key points lower the degree of vacuum to below 755mmhg 37
- Si39 303 installation 37
- The evacuation of air conditioner piping provides the following effects 1 vacuum drying 2 removes air and nitrogen used in air tightness test from the inside of pipes therefore it is necessary to ensure that the both purposes have been achieved in the vacuum drying operation 37
- Vacuum drying 37
- Vacuum drying is the use of a vacuum pump to vaporize gasify the moisture liquid inside the pipes and expel it leaving the pipes completely dry inside at 1 atm 760 mmhg the boiling point evaporating temperature of water is 100 c but if a vacuum is created inside the pipes using a vacuum pump then the boiling point is rapidly reduced as the degree of the vacuum is increased if the boiling point is reduced to a level below that of the ambient temperature then the moisture in the pipes will evaporate 37
- What is vacuum drying 37
- Choosing a vacuum pump 38
- Vacuum drying procedure 40
- Additional charge of refrigerant at installation time 42
- Caution 42
- Refrigerant charging instructions 42
- Drain pipe gradient and support 44
- Drain pipe work indoor 44
- Drain trap 44
- Grouped drain piping 45
- Use of an auxiliary drain hose flexible 45
- Allowable flow rate figures below the decimal have been discarded 46
- Allowed flow rate figures below the decimal have been discarded 46
- Calculations have been made with water area inside the pipe as 10 46
- Ceiling mounted cassette type fxcq m double flow 46
- Consider 2 l hr of drainage for every 1 hp for example drainage from 3 units running at 2 hp and 2 units running at 3 hp is calculated as follows 2 l hr 2 hp 3 units 2 l hr 3 hp 2 units 24 l hr 46
- Drain piping for each model 46
- General information 46
- If the drain hose cannot be sufficiently set on a slope execute the drain raising piping 46
- Installation si39 303 46
- Keep the drain pipe short and sloping downwards at a gradient of at least 1 100 to prevent air pockets from forming 46
- Piping diameter for grouped drain pipes 46
- Relationship between horizontal pipe diameter and allowable drainage for extended ventilation system 46
- Relationship between riser diameter and allowable drainage for extended ventilation system 46
- Rig drain piping 46
- Select piping diameter from the below table in accordance with the amount of condensation drained by all units with a common drain pipe 46
- The diameter of the drain pipe should be greater than or equal to the diameter of the connecting pipe vinyl tube pipe size 25 mm outer dimension 32 mm 46
- To keep the drain hose from sagging space hanging wires every 1 to 1 m 46
- Use the attached drain hose and clamp metal insert the drain hose into the drain socket up to the white tape tighten the clamp until the screw head is less than 4mm from the hose 46
- Use the same drain pipe for the humidifier as the indoor unit 46
- Use vp30 or larger pipe after the convergence point 46
- Use vp30 or larger pipe in risers 46
- Wrap the attached sealing pad over the clamp and drain hose to insulate 46
- Attached attached 49
- Ceiling mounted cassette type fxfq m multi flow 49
- Ceiling slab 49
- Clamp 2 49
- Drain hose 1 49
- Drain hose attached 1 49
- Drain raising pipe 49
- Fig 20 49
- Fig 21 49
- Fig 22 49
- General information 43 49
- Raising section 49
- Rig drain piping 49
- Si39 303 installation 49
- Tape white 49
- Caution 50
- General information 50
- Installation si39 303 50
- Precautions for drain raising piping 53
- 2 after piping work is finished check drainage flows smoothly open the water inlet lid add approximately 1000 cc of water gradually and check drainage flow 54
- General information 54
- Installation si39 303 54
- When electric wiring work is finished 54
- When electric wiring work is not finished 54
- 1 rig drain piping 56
- Ceiling suspended type fxhq m 56
- For drain work rig the pipes so that they drain reliably the drain pipe outlet direction can be chosen from the right rear right left rear and left refer to refrigerant piping work for right rear and right direction and refer to fig 20 for left rear and left direction 56
- For left drain pipe outlet remove the rubber plug and the insulation on the drain pipe connecting opening on the left side of the unit and change the position to the right side 56
- General information 56
- Insert the rubber stopper securely all the way to the base in order to prevent water leakage the diameter of the drain pipe should be greater than or equal to the diameter of the connecting pipe vinyl tube pipe size 20 mm outer dimension 26 mm keep the drain pipe short and sloping downwards at a gradient of at least 1 100 to prevent air pockets from forming refer to fig 21 use the attached drain hose 1 and clamp 2 insert the drain hose into the drain socket up to the gray tape refer to fig 22 tighten the clamp until the screw head is less than 4 mm from the hose refer to fig 23 be careful of the installation direction install so that the clamp metal does not contact the intake grill wrap the attached sealing pad 8 over the clamp and drain hose to insulate refer to fig 23 no folding of drain hose inside the indoor unit refer to fig 24 if there is slack in the drain hose it may cause damage to the intake grill 56
- Installation si39 303 56
- Rig the drain pipe as shown below and take measures against condensation improperly rigged piping could lead to leaks and eventually wet furniture and belongings 56
- Control wiring 58
- Electrical work 58
- Floor standing concealed floor standing type fxlq m fxnq m 58
- Power supply cabling of main power supply 59
- Duct work indoor 61
- Taking account of noise and vibration 61
- An inverter air conditioner may cause electronic noise generated from am broadcasting examine where to install the main air conditioner and electric wires keeping proper distances away from stereo equipment personal computers etc 62
- Caution 62
- General information 62
- If the electric wave of am broadcasting is particularly weak keep distances of 3m or more and use if the electric wave of am broadcasting is particularly weak keep distances of 3m or more and use conduit tubes for power and transmission lines 2 in heavy snowfall areas select an installation site where snow will not affect operation of the unit 3 the refrigerant r410a itself is nontoxic nonflammable and is safe if the refrigerant should leak however its concentration may exceed the allowable limit depending on room size due to this it could be necessary to take measures against leakage refer to the chapter caution for refrigerant leaks 4 do not install in the following locations 62
- Installation si39 303 62
- Locations such as kitchens which contain a lot of mineral oil or steam in the atmosphere or where oil may splatter on the unit resin parts may deteriorate causing the unit to fall or leak 62
- Locations where equipment that produces electromagnetic waves is found the electromagnetic waves may cause the control system to malfunction preventing normal operation 62
- Locations where flammable gases may leak where thinner gasoline and other volatile substances are handled or where carbon dust and other incendiary substances are found in the atmosphere leaked gas may accumulate around the unit causing an explosion 62
- Locations where sulfurous acids and other corrosive gases may be present in the atmosphere copper piping and soldered joints may corrode causing refrigerant to leak 62
- Selection of location 62
- There is no danger of fire due to leakage of inflammable gas 4 ensure that water cannot cause any damage to the location in case it drips out the unit e g in case of a blocked drain pipe 5 the piping length between the outdoor unit and the indoor unit may not exceed the allowable piping length see example of connection 6 select the location of the unit in such a way that neither the discharged air nor the sound generated by the unit disturb anyone 7 make sure that the air inlet and outlet of the unit are not positioned towards the main wind direction frontal wind will disturb the operation of the unit if necessary use a windscreen to block the wind 62
- This unit both indoor and outdoor is suitable for installation in a commercial and light industrial environment if installed as a household appliance it could cause electromagnetic interference the vrv outdoor units should be installed in a location that meets the following requirements 1 the foundation is strong enough to support the weight of the unit and the floor is flat to prevent vibration and noise generation 2 the space around the unit is adequate for servicing and the minimum space for air inlet and air outlet is available refer to figure below and choose one of both possibilities 62
- Service space 63
- At delivery the package should be checked and any damage should be reported immediately to the carrier claims agent when handling the unit take into account the following 1 fragile handle the unit with care 64
- Choose the path along which the unit is to be brought in ahead of time 3 if a forklift it to be used pass the forklift arms through the large openings on the bottom of the unit 4 lift the unit preferably with a crane and 2 belts of at least 8m long 5 when lifting the unit with a crane always use protectors to prevent belt damage and pay attention to the position of the unit s centre of gravity 6 after installation remove the transport clasps attached to the large openings 7 bring the unit as close to its final installation position in its original package to prevent damage during transport 64
- General information 64
- Inspecting and handling the unit 64
- Installation si39 303 64
- Keep the unit upright in order to avoid compressor damage 64
- Installation of outdoor unit 65
- Caution 66
- Unpacking and placing the unit 66
- Caution 67
- Check work prior to turn power supply on 68
- Follow the following procedure to conduct the initial test operation after installation 68
- Procedure and outline 68
- Test operation 68
- Turn power on 68
- 7777777 7777 7 69
- 9 7777777 7 69
- Check operation 69
- Confirmation on normal operation 70
- Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc status 71
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter p c b a2p and control transformer t1r t2r in switch box together 71
- Operation when power is turned on 71
- Tap the reset button on the outdoor unit pc board operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status 71
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 71
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 71
- When turning on power first time 71
- When turning on power the second time and subsequent 71
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 72
- 2 set mode display led leds display mode according to the setting 72
- 3 mode setting switch used to change mode 72
- 4 local setting switch used to make local settings 72
- Outdoor unit pc board 72
- Outdoor unit pc board layout 72
- Field setting 73
- Field setting from remote controller 73
- Group no setting by simplified remote controller 75
- Simplified remote controller brc2a51 75
- General information 76
- Notes 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes however cannot be checked except in the individual mode for those in parentheses 2 the mode numbers inside parentheses cannot be used by wireless remote controllers so they cannot be set individually setting changes also cannot be checked 3 marked are factory set 4 do not make settings other than those described above nothing is displayed for functions the indoor unit is not equipped with 5 88 may be displayed to indicate the remote controller is resetting when returning to the normal mode 6 if the setting mode to equipped heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit 76
- Setting contents and code no vrv unit 76
- Test operation si39 303 76
- Applicable range of field setting 77
- General information 71 77
- Si39 303 test operation 77
- Auto restart after power failure reset 78
- By setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off 78
- Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 78
- Detailed explanation of setting modes 78
- Fan speed changeover when thermostat is off 78
- Filter sign setting 78
- For the above reasons when the unit is set enabling to utilize auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 78
- For the air conditioners with no setting for the function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off however for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure 78
- If switching the filter sign on time set as given in the table below set time 78
- In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 78
- Setting table 78
- Since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 78
- Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 78
- Air flow adjustment ceiling height 79
- Air flow direction setting set the air flow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 79
- In the case of fxaq fxhq 79
- In the case of fxfq100 125 79
- In the case of fxfq25 80 79
- Make the following setting according to the ceiling height the setting position no is set to 01 at the factory 79
- Only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 79
- Setting of air flow direction adjustment 79
- Setting table 79
- Air flow rate switching at discharge grille for field air flow rate switching 80
- Make the following air flow direction setting according to the respective purpose 80
- Setting of air flow direction adjustment range 80
- Setting table 80
- When the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate follow the instruction manual for the optional parts to enter the setting numbers 80
- Caution when turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display this is not an operative fault 82
- General information 82
- Group no setting example 82
- Test operation si39 303 82
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 84
- Factory setting 84
- How to select operation mode 84
- Whether operation by remote controller will be possible or not for turning on off controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below 84
- 7 7 7 7 7 7 7 85
- 7 7 7 7 7 7 9 85
- 7 8 7 7 7 7 8 85
- Factory setting 85
- Field setting from outdoor unit 85
- Setting by dip switches the following field settings are made by dip switches on pc board 85
- Setting by pushbutton switches the following settings are made by pushbutton switches on pc board in case of multi outdoor unit system various items should be set with the master unit setting with the slave unit is disabled the master unit and slave unit can be discriminated with the led indication as shown below 85
- General information 86
- Mode changing procedure 86
- Monitor mode h1p blinks used to check the program made in setting mode 2 86
- Setting mode 1 h1p off initial status when normal used to select the cool heat setting also indicates during abnormal low noise control and demand control 86
- Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 86
- Test operation si39 303 86
- There are the following three setting modes 86
- B setting mode 2 88
- 7 7 7 7 7 92
- 7 7 7 7 8 92
- 7 7 7 7 9 92
- 7 7 7 8 7 92
- 7 7 7 8 8 92
- 7 7 7 9 7 92
- 7 7 8 7 7 92
- 7 7 8 7 8 92
- 7 7 8 8 7 92
- 7 7 8 8 8 92
- 7 7 9 7 7 92
- 7 8 7 7 7 92
- 7 8 7 7 8 92
- 7 8 7 8 7 92
- 7 8 7 8 8 92
- 7 8 8 7 7 92
- 7 8 8 7 8 92
- 8 7 7 7 7 92
- 9 7 7 7 7 92
- C monitor mode 92
- Defrost select setting short 92
- Emg operation backup operation setting on 92
- General information 92
- Medium 92
- Number of units for sequential start 1 unit 92
- Push the mode button bs1 and returns to setting mode 1 92
- Push the return button bs3 and switches to the initial status of monitor mode 92
- Push the return button bs3 to display different data of set items 92
- Push the set button bs2 and set the led display to a setting item 92
- Setting item 0 display contents of number of units for sequential start and others 92
- Tc setting h 92
- Te setting h 92
- Test operation si39 303 92
- To enter the monitor mode push the mode button bs1 when in setting mode 1 92
- Multi outdoor units connection 96
- Address setting for 98
- Set lower 5 digits with binary number no to no 1 98
- Image of operation in the case of a 100
- Image of operation in the case of a b 100
- Image of operation in the case of b 100
- General information 102
- Image of operation in the case of a 102
- Image of operation in the case of a and b 102
- Image of operation in the case of b 102
- Test operation si39 303 102
- Additional refrigerant charge total flow 105
- General information 99 105
- Setting of refrigerant additional charging operation 105
- Si39 303 test operation 105
- When additional refrigerant is not charged all with outdoor unit in stop mode operate the outdoor unit and charge the liquid refrigerant from the service port of liquid stop value the additional charging operation is activated by pushbutton switch on the outdoor unit pc board 105
- Check operation to prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor of discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of motorized valve check operation function 107
- Operating procedure 107
- Press mode button bs1 once and reset setting mode 2 107
- Setting of vacuuming mode in order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units to turn on some solenoid valves 107
- Use the vacuum pump to perform vacuuming operation 107
- With setting mode 2 while the unit stops set b refrigerant recovery vacuuming mode to on the expansion valves of indoor and outdoor units fully open and some of solenoid valves open h2p blinks to indicate the test operation and the remote controller displays test operation and in centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation 107
- Caution for refrigerant leaks 108
- Check the dangerous concentration in accordance with steps 1 4 below and take whatever action is necessary 108
- For r407c and 0 4kg 108
- For r410a 108
- Introduction 108
- Maximum concentration level 108
- Notes where a single refrigerant facility is divided onto 2 entirely independent refrigerant systems then use the amounts of refrigerant with which each separate system of charged 108
- Pay special attention to the place such as a basement etc where refrigerant can stay since refrigerant is heavier than air 108
- Points to note in connection with refrigerant leaks the installer and system specialist shall secure safety against leakage according to local regulations or standards the following standards may be applicable if local regulations are not available 108
- Procedure for checking dangerous concentration 108
- Step1 calculate the amount of refrigerant kg charged to each system separately 108
- The maximum charge of refrigerant and the calculation of the maximum concentration of refrigerant is directly related to the humanly occupied space in to which it could leak the unit of measurement of the concentration is kg 108
- The weight in kg of the refrigerant gas in 1 108
- Volume of the occupied space compliance to the local applicable regulations and standards of the maximum allowable concentration level is required in australia the maximum allowed concentration level of refrigerant to a humanly space is limited to 0 5kg 108
- B where there is a room division but there is an opening between the rooms sufficiently large to permit a free flow of air back and forth 109
- C where there is a gas leak detection alarm device linked to a mechanical ventilator in the smallest room then the next smallest room will become the measurement target 109
- General information 103 109
- If the result of the above calculation exceeds the dangerous concentration level then make similar calculations for the second then third smallest room and so on until the result falls short of the concentration level 109
- In a case like the following calculate the volume of a b as a single room or as the smallest room a where there are no smaller room divisions 109
- Si39 303 caution for refrigerant leaks 109
- Step 2 calculate the smallest room volume 109
- Step 3 calculate the refrigerant density using the results of the calculations in step 1 and 2 above 109
- Where there is an opening without a door or where there are openings above and below the door which are each equivalent in size to 0 5 or more of the floor area 109
- Hand over to customer 111
- Important points 111
- Operational steps 111
- Appendix 112
- Difference between catalogue data and actual noise 112
- Operating noise of indoor units 112
- Calculating operating noise 113
- Faint noises and correcting operating noise with respect to faint noises 113
- Appendix si39 303 114
- General information 114
- In the case of 2m or less 114
- In the case of 2m or more 114
- Piping installation point 114
- Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope 114
- The projection part between multi connection piping kits 114
- When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit 114
- Good good 115
- Allowable piping length 116
- Branch with refnet joint 116
- Branch with refnet joint and refnet header 117
- Branch with refnet header 118
- How to select the refnet joint 119
- Indoor units 1 8 119
- Outdoor unit refnet header 119
- Outdoor unit refnet joint c 119
- Refrigerant branch kit selection 119
- How to choose an outdoor branch kit needed if the outdoor unit capacity type is rxyq18 or more 120
- How to select the refnet header 120
- Indoor units 1 8 120
- Outdoor unit refnet header 120
- Outdoor unit refnet joint b 120
- Outdoor unit refnet joint c 120
- Refnet header 120
- Choose from the following table in accordance with the total capacity of all the indoor units connected below this 121
- Choose from the following table in accordance with the total capacity of all the outdoor units connected below this unit mm 121
- Do not let the connection piping exceed the refrigerant piping size chosen by general system model name unit mm 121
- For an outdoor unit multi installation rxyq18 121
- Match to the size of the connection piping on the outdoor unit outdoor unit connection piping size unit mm 121
- My1b make the settings in accordance with the following figure 121
- Pipe size selection 121
- Piping between outdoor branches part b 121
- Piping between outdoor unit and refrigerant branch kit part a 121
- Piping between refrigerant branch kits 121
- Between refrigerant branch kit and indoor unit 122
- Oil equalizing line only for rxyq18 or more part d 122
- Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit unit mm 122
- Piping between outdoor branch and outdoor unit part c unit mm 122
- Unit mm 122
- Additional refrigerant to be charged r kg r should be rounded off in units of 0 kg 123
- Example for refrigerant branch using refnet joint and refnet header for rxyq34my1b 123
- How to calculate the additional refrigerant to be charged 123
- Indoor units 1 8 123
- Note if a negative result is gotten for r from the formula at right no refrigerant needs to be added 123
- Outdoor unit 123
- Refnet header 123
- Refnet joint a b 123
- Bhfp22m135 125
- Bhfp22m90 125
- Note installation of outdoor units refer to installation manual of outdoor unit installation of refrigerant pipes between outdoor and indoor units need to arrange for refnet joint and refnet header combination of outdoor units follow engineering data 125
- Outdoor unit multi connection piping kit 125
- This kit includes the following parts 125
- In case of front piping 127
- After connection piping 130
- Bhfp22m135 130
- Refer p 120 for table 7 8 and 9 130
- In case of underside piping 131
- Refnet joint 132
- Refnet pipe connections for vrv ii r410a series 132
- Gas side liquid side 133
- General information 127 133
- Khrp26m22h 133
- Khrp26m33h 133
- Khrp26m72h 133
- Khrp26m73h 133
- Khrp26m73hp 133
- Reducing socket 133
- Refnet header 133
- Si39 303 appendix 133
- General information 129 135
- Si39 303 appendix 135
- Vrv inspection sheet 135
- Air filter visual inspection no clogging or damage 136
- Appendix si39 303 136
- Before turning on the power 136
- Breaker capacity visual inspection specified capacity g ng 136
- Compressor electrical insulation 136
- Fan motor electrical insulation 136
- Gas detector no leaks g ng 136
- General information 136
- Heat exchanger visual inspection 136
- Heat exchanger visual inspection no clogging or damage 136
- Indoor unit 136
- Inspection item 136
- Installation visual inspection short circuit etc g ng 136
- Or more 136
- Outdoor unit 1 136
- Outdoor unit 2 outdoor unit 3 136
- Refrigerant system gas detector no leaks 136
- Screwdriver etc no looseness g ng 136
- Standard guideline measurement values 136
- System name 136
- Auxiliary heater electrical insulation 500 v megatester 1 m ωωωω or more 137
- Decision 137
- Fan motor electrical insulation 137
- General information 131 137
- Indoor unit 137
- Inspection item 137
- Inspection method 137
- Installation visual inspection short circuit etc 137
- Si39 303 appendix 137
- Standard guideline measurement values 137
- V megatester 1 m ωωωω or more 137
- Appendix si39 303 138
- During operation 138
- General information 138
- Outdoor unit 1 138
- Outdoor unit 2 138
- Outdoor unit 3 138
- System name 138
- 13 c when cooling 15 20 c when heating 139
- Discharge air temperature 139
- During operation 139
- Fan noise vibration listening no noise or vibration 139
- Fan operating current clamp meter 139
- Fan rotation direction visual inspection forward rotation 139
- General information 133 139
- Indoor unit 139
- Inspection item 139
- Inspection method 139
- Powerly supply voltage tester rated voltage 10 139
- Si39 303 appendix 139
- Standard guideline measurement values 139
- Suction air temperature 139
- System name 139
- Thermometer 139
- Thermometer differential 139
- Outdoor unit 140
- Piping system diagrams 140
- Rxyq5my1b 140
- Rxyq8my1b rxyq10my1b rxyq12my1b 141
- Rxyq14my1b rxyq16my1b 142
- Electronic expansion valve filter filter 143
- Flare connectio 143
- Flare connection 143
- Fxcq fxzq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 143
- Heat exchanger gas piping connection port 143
- Indoor unit 143
- Liquid piping connection port 143
- R1t thermistor for suction air temperature r2t thermistor for liquid line temperature r3t thermistor for gas line temperature 143
- Φ 15 or less attached piping above φ 19 143
- Outdoor unit 144
- Rxyq5my1b 144
- Wiring diagrams 144
- Rxyq8my1b rxyq10my1b rxyq12my1b 145
- Rxyq14my1b rxyq16my1b 146
- Field wiring 147
- Rxyq5 16my1b 147
- Rxyq18 32my1b 148
- Rxyq34 48my1b 149
- Bad examples and good examples in installation 150
- Example 1 signal interference due to use of multiple core cable all model 150
- Main points 150
- Situation 150
- Source of problem and remedial action 150
- Example 2 mismatch between cables connecting indoor and outdoor units and corresponding piping all model 151
- Main points 151
- Situation 151
- Source of problem and remedial action 151
- Example 3 drain pipe trap shape defective 152
- Main points 152
- Situation 152
- Source of problem and remedial action 152
- Example 4 pressure down despite absence of leaks during air tight test all model 153
- Main points 153
- Situation 153
- Source of problem and remedial action 153
- Example 5 excessive noise due to incorrect angling of refnet joints 154
- Main points 154
- Situation 154
- Source of problem and remedial action 154
- Example 6 cracks develop in field pipes due to thermal expansion and contraction 155
- For your reference 155
- Main points 155
- Remedial action 155
- Situation 155
- Cause and remedial action 156
- Example 7 transmission wiring between the cool heat selector and the outdoor unit is too close to a high voltage wire 156
- Example 8 the centralized control group number cannot be set inverter k series 156
- Main points 156
- Remedial action 156
- Situation 156
- Example 9 88 88 88 88 cannot be cleared from the central remote controller 157
- Main points 157
- Remedial action 157
- Situation 157
- Applicable models 159
- Before operation 91 159
- Caution for refrigerant leaks 94 159
- Field wiring 80 159
- Introduction 55 159
- Main components 61 3 selection of location 62 4 inspecting and handling the unit 64 5 unpacking and placing the unit 65 6 refrigerant piping 67 159
- Part 2 part 2 part 2 part 2 installation manual installation manual installation manual installation manual 159
- Rxyq5my1b rxyq28my1b rxyq8my1b rxyq30my1b rxyq10my1b rxyq32my1b rxyq12my1b rxyq34my1b rxyq14my1b rxyq36my1b rxyq16my1b rxyq38my1b rxyq18my1b rxyq40my1b rxyq20my1b rxyq42my1b rxyq22my1b rxyq44my1b rxyq24my1b rxyq46my1b rxyq26my1b rxyq48my1b 159
- Combination 161
- Introduction 161
- A outdoor temperature cdb b indoor temperature cwb c outdoor temperature cwb d indoor temperature cdb range for continuous operation range for pull down operation range for warming up operation 162
- Cooling heating 162
- Standard operation limit 162
- Standard supplied accessories 162
- The figures below assume following operating conditions for indoor and outdoor units equivalent pipe length 7 m level difference 0m 162
- Option accessory 163
- Outdoor unit multi connection piping kit for r410a only always use an appropriate kit dedicated for your system 163
- Pipe size reducer for r410a only always use an appropriate kit dedicated for your system 163
- Refrigerant branching kit for r410a only always use an appropriate kit dedicated for your system 163
- To install the above outdoor units the following optional parts are also required 163
- To select an optimum refrigerant branching kit refer to 6 refrigerant piping work 163
- Installation manual 164
- Introduction si39 303 164
- Technical specifications 164
- Installation manual 159 165
- Si39 303 introduction 165
- Electrical specifications 166
- Installation manual 166
- Introduction si39 303 166
- For main components and function of the main components refer to the engineering data book and the service manual si39 302 167
- Main components 167
- Caution 1 an inverter air conditioner may cause electronic noise generated from am broadcasting examine where to install the main air conditioner and electric wires keeping proper distances away from stereo equipment personal computers etc 168
- If the electric wave of am broadcasting is particularly weak keep distances of 3m or more if the electric wave of am broadcasting is particularly weak keep distances of 3m or more and use conduit tubes for power and transmission lines 2 in heavy snowfall areas select an installation site where snow will not affect operation of the unit 3 the refrigerant r410a itself is nontoxic nonflammable and is safe if the refrigerant should leak however its concentration may exceed the allowable limit depending on room size due to this it could be necessary to take measures against leakage refer to the chapter caution for refrigerant leaks 4 do not install in the following locations 168
- Installation manual 168
- Locations such as kitchens which contain a lot of mineral oil or steam in the atmosphere or where oil may splatter on the unit resin parts may deteriorate causing the unit to fall or leak 168
- Selection of location 168
- Selection of location si39 303 168
- There is no danger of fire due to leakage of inflammable gas 4 ensure that water cannot cause any damage to the location in case it drips out the unit e g in case of a blocked drain pipe 5 the piping length between the outdoor unit and the indoor unit may not exceed the allowable piping length see example of connection 6 select the location of the unit in such a way that neither the discharged air nor the sound generated by the unit disturb anyone 7 make sure that the air inlet and outlet of the unit are not positioned towards the main wind direction frontal wind will disturb the operation of the unit if necessary use a windscreen to block the wind 168
- This unit both indoor and outdoor is suitable for installation in a commercial and light industrial environment if installed as a household appliance it could cause electromagnetic interference the vrv outdoor units should be installed in a location that meets the following requirements 1 the foundation is strong enough to support the weight of the unit and the floor is flat to prevent vibration and noise generation 2 the space around the unit is adequate for servicing and the minimum space for air inlet and air outlet is available refer to figure below and choose one of both possibilities 168
- At delivery the package should be checked and any damage should be reported immediately to the carrier claims agent when handling the unit take into account the following 1 fragile handle the unit with care 170
- Choose the path along which the unit is to be brought in ahead of time 3 if a forklift it to be used pass the forklift arms through the large openings on the bottom of the unit 4 lift the unit preferably with a crane and 2 belts of at least 8m long 5 when lifting the unit with a crane always use protectors to prevent belt damage and pay attention to the position of the unit s centre of gravity 6 after installation remove the transport clasps attached to the large openings 7 bring the unit as close to its final installation position in its original package to prevent damage during transport 170
- Inspecting and handling the unit 170
- Inspecting and handling the unit si39 303 170
- Installation manual 170
- Keep the unit upright in order to avoid compressor damage 170
- Unpacking and placing the unit 171
- Ex passing piping out through the front 172
- Installation manual 172
- Unpacking and placing the unit si39 303 172
- Refrigerant piping 173
- Selection of piping material 173
- Connecting the refrigerant piping 174
- Front connection 2 remove the shutoff valve cover to connect 3 flange 4 or flare nut in case of models q5 type 5 gas side accessory pipe 1 2 3 6 in case of q5 type field supply 7 oil equalizing piping shutoff valve except q5 8 no piping work is needed 9 flare nut 10 brazing 11 liquid side piping field supply 12 side bottom connection 13 remove the knock holes on the bottom frame and route the piping under the bottom frame 14 knockout hole 15 punch the knock holes 16 liquid side piping field supply 17 oil equalizing piping field supply 174
- Front connection remove the shutoff valve cover to connect 174
- Installation manual 174
- One outdoor unit installed in case of rxyq5 16my1b 174
- Refrigerant piping si39 303 174
- Side bottom connection remove the knock holes on the bottom frame and route the piping under the bottom frame 174
- The local branch piping can be connected either forward or to the sides taken out of the bottom as shown in the figure 174
- When multiple outdoor units installed in case of rxyq18 48my1b to connect the piping between outdoor units an optional piping kit multi connection piping kit is always required when installing the piping follow the instructions in the installation manual that comes with the kit 174
- 1 the piping between the outdoor units must be routed level or slightly upward to avoid the risk of oil detention to the piping side 177
- Installation manual 171 177
- Pattern 1 177
- Pattern 2 177
- Prohibited pattern 177
- Si39 303 refrigerant piping 177
- If 2 m or less 178
- If 2 m or more 178
- If the piping length between the outdoor unit connecting pipe kits or between the outdoor units exceeds 2 m create a rise of 200 mm or more in the gas line within a length of 2 m from the kit 178
- Installation manual 178
- Prohibited pattern 178
- Refrigerant piping si39 303 178
- To avoid the risk of oil retention to the stopping unit side always connect the shutoff valve and the piping between outdoor units as shown in the figure a or figure b 178
- Branch with refnet joint branch with refnet joint and refnet header branch with refnet header 179
- Example of connection 179
- How to calculate the additional refrigerant to be charged 179
- Installation manual 173 179
- Pipe size selection 179
- Refrigerant branch kit selection 179
- Si39 303 refrigerant piping 179
- Air tight test and vacuum drying 181
- Air tight test make sure to use nitrogen gas for the service port location refer to the caution label attached on the front panel right of the outdoor unit 181
- Leak test and vacuum drying 181
- Notes make sure to perform airtightness test and vacuum drying using the service ports of the shutoff valve shown in the table on the bellow 181
- Pressurize the liquid and gas pipes to 3 mpa 38bar do not pressurize more than 3 mpa 38bar if the pressure does not drop within 24 hours the system passes the test if the pressure drops check where the nitrogen leaks from 181
- Shutoff valve operation procedure introduction confirm the sizes of the shutoff valves connected to the system referring to the table on the below 181
- The units were checked for leaks by the manufacturer confirm that the valves are firmly closed before pressure test or vacuuming to prevent entry of any impurities and insure sufficient pressure resistance always use the special tools dedicated for r410a 181
- Vacuum drying use a vacuum pump which can evacuate to 100 kpa 5torr 755mmhg 1 evacuate the system from the liquid and gas pipes by using a vacuum pump for more than 2 hours and bring the system to 100 kpa after keeping the system under that condition for more than 1 hour check if the vacuum gauge rises or not if it rises the system may either contain moisture inside or have leaks 2 following should be executed if there is a possibility of moisture remaining inside the pipe if piping work is carried out during the raining season or over a long period of time rainwater may enter the pipe during work after evacuating the system for 2 hours pressurize the system to 0 5mpa vacuum break with nitrogen gas and evacuate the system again using the vacuum pump for 1 hour to 100 kpa vacuum drying if the system cannot be evacuated to 100 kpa within 2 hours repeat the operation of vacuum break and vacuum drying then after leaving the system in vacuum for 1 hour confirm that the vacuum gauge does not 181
- After tightening the cap check that no refrigerant leaks are present 182
- Always use a charge hose for service port connection 182
- Caution 182
- Closing shutoff valve 1 remove the cap and turn the valve clockwise with the hexagon wrench jisb4648 2 securely tighten the valve until the shaft contacts the main body seal 3 make sure to tighten the cap securely for the tightening torque refer to the table on the bellow 182
- Opening shutoff valve 1 remove the cap and turn the valve counterclockwise with the hexagon wrench jisb4648 2 turn it until the shaft stops do not apply excessive force to the shutoff valve doing so may break the valve body as the valve is not a backseat type always use the special tool 3 make sure to tighten the cap securely 182
- Or greater when loosening a flare nut always use two wrenches in combination when connecting the piping always use a spanner and torque wrench in combination to tighten the flare nut 182
- See the following table for flare part machining dimensions 182
- See the following table for tightening torque applying too much torque may cause the flares to crack 182
- Tighten with one torque wrench within the set torque do not use two wrenches because this might cause the refrigerant to leak 182
- Tightening torque 182
- Use ester oil or ether oil 182
- When connecting a flare nut coat the flare inner and outer faces with etheral oil or ester oil and hand tighten the nut 3 to 4 turns as the initial tightening 182
- When loosening a flare nut always use two wrenches in combination when connecting the piping always use a spanner and torque wrench in combination to tighten the flare nut 182
- After all the piping has been connected use nitrogen to perform a gas leak check 183
- After finishing the leak test and vacuum drying the piping must be insulated take into account the following points 183
- After the work is finished make sure to check that there is no gas leak when you keep on tightening the flare nut with a spanner there is a point where the tightening torque suddenly increases from that position further tighten the flare nut the angle shown below 183
- Be sure to insulate the liquid side and gas side piping for the inter unit piping and the refrigerant branch kits and always use q18 type or better insulation for the oil pressure equalizer 183
- Caution be sure to insulate local pipes as touching them can cause burns 183
- Disposal requirements dismantling of the unit treatment of the refrigerant oil and eventual other parts should be done in accordance with the relevant local and national regulations 183
- If there is a possibility that condensation on the shut off valve might drip down into the indoor unit through gaps in the insulation and piping because the outdoor unit is located higher than the indoor unit etc this must be prevented by corking the connections etc 183
- If you think the humidity around the cooling piping might exceed 30 c and rh80 reinforce the insulation on the cooling piping at least 20mm thick condensation might form on the surface of the insulation 183
- Make sure to insulate the connection piping and refrigerant branch kits entirely 183
- Not insulating them may cause leaking the gas piping can reach temperatures of 120 c be sure the insulation used can withstand such temperatures 183
- Not recommendable but in case of emergency you must use a torque wrench but if you are obliged to install the unit without a torque wrench you may follow the installation method mentioned below 183
- Pipe insulation 183
- Additional refrigerant charge 184
- Additional refrigerant charge procedure to learn the system settings for additional refrigerant charging refer to the service precaution label attached on the back of the electric box lid in the outdoor unit 1 fully open the gas line shutoff valve liquid line shutoff valve and valve a above must be left fully closed and start the additional refrigerant charge operation 2 after the system is charged with a specified amount of refrigerant press the confirmation button bs3 on the p board a1p in the outdoor unit to stop the additional refrigerant charge operation 3 immediately restore the shutoff valve to the following status otherwise the piping may burst due to liquid seal 185
- Additional refrigerant charge procedure to learn the system settings for additional refrigerant charging refer to the service precaution label attached on the back of the electric box lid in the outdoor unit 1 fully open the gas line shutoff valve oil equalizing line shutoff valve liquid line shutoff valve and valves a and b above must be left fully closed start the additional refrigerant charge operation 2 after the system is charged with a specified amount of refrigerant press the confirmation button bs3 on the p board a1p in the outdoor unit to stop the additional refrigerant charge operation 3 immediately restore the shutoff valve to the following status otherwise the piping may burst due to liquid seal 185
- Caution if the refrigerant cylinder is siphonal set it upright while charging additional refrigerant 185
- Installation manual 179 185
- Liquid line shutoff valve gas line shutoff valve oil equalizing line shutoff valve 185
- Liquid line shutoff valve gas line shutoff valve oil equalizing line shutoff valve open open open 185
- One outdoor unit installed in case of rxyq5 16my1b 185
- Open open close default status before delivery 185
- Pressure reducing valve 2 nitrogen 3 tank 4 siphon system 5 measuring instrument 6 vacuum pump 7 valve a 8 gas side 9 outdoor unit 10 liquid side 11 indoor unit 12 shutoff valve service port 13 charge hose 14 to indoor unit 15 oil equalizing line 16 valve b 17 dotted lines represent onsite piping 185
- Si39 303 185
- When multiple outdoor units installed in case of rxyq18 48my1b 185
- Field wiring 186
- Optional parts cool heat selector 186
- A power circuit see table below must be provided for connection of the unit this circuit must be protected with the required safety devices i e a main switch a slow blow fuse on each phase and an earth leak detector 187
- Power circuit and cable requirements 187
- Select the power supply cable in accordance with relevant local and national regulations 187
- Specifications for local wiring power cord and branch wiring are in compliance with iec60245 187
- When using residual current operated circuit breakers be sure to use a high speed type 200ma rated residual operating current 187
- Wire size must comply with the applicable local and national code 187
- Wire type h05vv only in protected pipes use h07rn f when protected pipes are not used 187
- General 188
- Examples 189
- Field line connection 189
- Installation manual 183 189
- L1 l2 l3 n phase of the power cord should be clamped to the safety catch using the included clamp material the green and yellow striped wrapped wires should be used for grounding 189
- Si39 303 field wiring 189
- System example 189
- Field wiring si39 303 190
- Installation manual 190
- Retain with accessory clamps 3 2 electric wiring 3 wiring between units 4 retain to the electric box with the accessory clamps 1 5 when routing out the power ground wires from the right side 6 when routing the remote control cord and inter unit wiring secure clearance of 50 mm or more from the power wiring ensure that the power wiring does not contact any heated sections 7 retain to the back of the column support with the accessory clamps 2 8 when routing out the inter unit wirings from the opening for piping 9 when routing out the power ground wires from the front 10 when routing out the ground wires from the left side 11 grounding wire 12 when wiring exercise sufficient caution not to detach the acoustic insulators from the compressor 13 retain to the back of the column support with the accessory clamps 2 14 section a 15 section b 16 power supply 17 branch switch overcurrent breaker 18 earth leakage breaker 19 ground wire 20 unit a 21 unit b 22 unit c 190
- Rxyq12 14 16 type 190
- Rxyq5 8 10 type 190
- Cool heat selector 2 outdoor unit p c board a1p 3 take care of the polarity 4 use the conductor of sheathed wire 2 wire nopolarity 5 terminal board field supply 6 indoor unit 192
- Field line connection transmission wiring and cool heat selection in case of rxyq5 16my1b 192
- Field wiring si39 303 192
- Heating cooling switching remote control cord when a heating cooling switch remote comtrol sold separately is connected 2 secure to the lock plate using the included clamping material 3 wiring between the units outdoor outdoor 4 wiring between the units indoor outdoor 192
- In case of rxyq18 48my1b 192
- Installation manual 192
- Unit a base unit 2 unit b 3 unit c 4 to in d unit 5 to out d unit 6 to multi unit 7 to cooler heater selector 8 to indoor unit 9 to other systems 192
- Branch 2 subbranch 193
- Caution be sure to follow the limits below if the unit to unit cables are beyond these limits it may result in malfunction of transmission maximum wiring length 1000m total wiring length 2000m max branches no of branches 16 max number of outdoor units connectable 10 or less 193
- Cool heat selector 193
- F1 f2 f1 f2 f1 f2 193
- Installation manual 187 193
- Performing cool heat setting with the cool heat selector connect the cool heat selector remote controller optional to the a b c terminals and set the cool heat selector switch ds1 on the outdoor unit pc board a1p to out d unit 193
- Remote controller 193
- Sequential start make the outdoor unit cable connections shown below the outdoor unit pc board a1p is factory set at sequential start available 193
- Setting the cool heat operation heat pump unit only 1 performing cool heat setting with the remote controller connected to the indoor unit keep the cool heat selector switch ds1 on the outdoor unit pc board a1p at the factory setting position in d unit 193
- Si39 303 field wiring 193
- To in d unit f1 f2 193
- Up to 16 branches are possible for unit to unit cabling no branching is allowed after branching max number of outdoor units connectable 10 or less never connect the power supply to unit to unit cabling terminal block otherwise the entire system may break down 193
- Be sure to let the power line and the transmission line pass through a conduit hole 194
- Caution for low noise operation it is necessary to get the optional external control adaptor for outdoor unit for details see the installation manual attached to the adaptor 194
- Electric wiring diagram printed on the back of the electric box lid 194
- Field wiring si39 303 194
- Installation manual 194
- Pick the power line from the upper hole on the left side plate from the front position of the main unit through the conduit hole of the wiring mounting plate optional parts or from a knock out hole to be made in the unit s bottom plate 194
- Picking power line and transmission line 194
- Before operation 197
- Checks before initial start up 197
- Caution after completing installation be sure to open the valve operating the unit with the valve shut will break the compressor 198
- During the operation monitor the outdoor unit operation status and check for any incorrect wiring 198
- If the system is started within about 12 minutes after the outdoor indoor units are turned on the compressor will not run and h2p lights up before starting an operation always verify that the led display shows the contents of the table in 8 2 test run 2 198
- Power supply connection when running the unit for the first time after installation be sure to perform a test run following these steps for test run not performing a test run when the unit is first installed may prevent the unit from operating properly 198
- Test run 198
- The check operation does not provide any means of checking the indoor units individually for that purpose perform normal operation using the remote controller after the check operation 198
- The system may require up to 10 minutes until it can start the compressor after an operation start this is a normal operation to equalize the refrigerant distribution 198
- After the test run is over operate the unit normally heating is not possible if the outdoor temperature is 24 c or higher make sure the indoor and outdoor units are operating normally if a knocking sound can be heard in the liquid compression of the compressor stop the unit immediately and then energize the heater for a sufficient length of time before restarting the operation run each indoor unit one at a time and make sure the corresponding outdoor unit is also running check to see if cold or hot air is coming out of the indoor unit press the fan direction and fan strength buttons on the indoor unit to see if they operate properly 199
- After the test run when handing the unit over to the customer make sure the electric box lid the service lid and the unit casing are all attached 199
- If the system has not undergone any check operation by the test operation button since it was first installed an error code u3 is displayed in this case perform check operation referring to 8 2 test run 199
- Once stopping the compressor will not restart in about 5 minutes even if the run stop button of an indoor unit in the same system is pressed 199
- Remote controller displays an error 199
- Temperature adjustment operation confirmation 199
- When the system operation is stopped by the remote controller the outdoor units may continue operating for further 5 minutes at maximum 199
- Caution for refrigerant leaks 200
- Check the dangerous concentration in accordance with steps 1 4 below and take whatever action is necessary 200
- For r407c and 0 4kg 200
- For r410a 200
- Introduction 200
- Maximum concentration level 200
- Notes where a single refrigerant facility is divided onto 2 entirely independent refrigerant systems then use the amounts of refrigerant with which each separate system of charged 200
- Pay special attention to the place such as a basement etc where refrigerant can stay since refrigerant is heavier than air 200
- Points to note in connection with refrigerant leaks the installer and system specialist shall secure safety against leakage according to local regulations or standards the following standards may be applicable if local regulations are not available 200
- Procedure for checking dangerous concentration 200
- Step1 calculate the amount of refrigerant kg charged to each system separately 200
- The maximum charge of refrigerant and the calculation of the maximum concentration of refrigerant is directly related to the humanly occupied space in to which it could leak the unit of measurement of the concentration is kg 200
- The weight in kg of the refrigerant gas in 1 200
- Volume of the occupied space compliance to the local applicable regulations and standards of the maximum allowable concentration level is required in australia the maximum allowed concentration level of refrigerant to a humanly space is limited to 0 5kg 200
- B where there is a room division but there is an opening between the rooms sufficiently large to permit a free flow of air back and forth 201
- C where there is a gas leak detection alarm device linked to a mechanical ventilator in the smallest room then the next smallest room will become the measurement target 201
- If the result of the above calculation exceeds the dangerous concentration level then make similar calculations for the second then third smallest room and so on until the result falls short of the concentration level 201
- In a case like the following calculate the volume of a b as a single room or as the smallest room a where there are no smaller room divisions 201
- Installation manual 195 201
- Si39 303 caution for refrigerant leaks 201
- Step 2 calculate the smallest room volume 201
- Step 3 calculate the refrigerant density using the results of the calculations in step 1 and 2 above 201
- Where there is an opening without a door or where there are openings above and below the door which are each equivalent in size to 0 5 or more of the floor area 201
- Operation range 06 6 operation procedure 07 203
- Optimum operation 14 8 following symptoms are not air conditioner troubles 15 203
- Part 3 part 3 part 3 part 3 operation manual operation manual operation manual operation manual 203
- Safety cautions 99 2 what to do before operation 02 3 remote controller and changeover switch name and function of each switch and display 03 4 warning 05 203
- Troubleshooting 18 203
- Safety cautions 205
- If your installation has a customized control system ask your daikin dealer for the operation that corresponds to your system 208
- Names and functions of parts 208
- Outdoor units 208
- Reyq series 208
- Rxyq series 208
- This operation manual is for the following systems with standard control before initiating operation contact your daikin dealer for the operation that corresponds to your system type and mark 208
- What to do before operation 208
- Remote controller and changeover switch name and function of each switch and display 209
- Never do the following 211
- Warning 211
- Operation range 212
- To avoid condensation and water dripping out the unit if the temperature or the humidity is beyond these conditions safety devices may work and the air conditioner may not operate 212
- Use the system in the following temperature and humidity ranges for safe and effective operation 212
- Cooling heating and fan only operation 213
- Operation procedure 213
- Program dry operation 215
- Adjusting the air flow direction only for double flow multi flow corner ceiling suspended and wall mounted 216
- Programming start and stop of the system with timer 217
- Setting the master remote controller 218
- Precautions for group control system or two remote controller control system 219
- Optimum operation 220
- Cool heat cannot be changed over 221
- Fan operation is possible but cooling and heating do not work 221
- Following symptoms are not air conditioner troubles 221
- The fan direction does not correspond to the setting 221
- The fan strength does not correspond to the setting 221
- The system does not operate 221
- Dust comes out of the unit 222
- Noise of air conditioners 222
- The outdoor unit fan does not spin 222
- The units can give off odours 222
- White mist comes out of a unit 222
- Troubleshooting 224
- Check if direct sunlight enters the room use curtains or blinds 225
- Check if the air flow angle is not proper 225
- Check if the heat source of the room is excessive 225
- About refrigerant r410a 228
- Characteristics of new refrigerant r410a 1 performance almost the same performance as r22 and r407c 2 pressure working pressure is approx 1 times more than r22 and r407c 3 refrigerant composition few problems in composition control since it is a quasi azeotropic mixture refrigerant 228
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 228
- Outline 228
- Precautions for new refrigerant r410a 228
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 228
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 228
- Precautions for new refrigerant r410a 223 229
- Si39 303 precautions for new refrigerant r410a 229
- Thermodynamic characteristic of r410a 229
- Refrigerant cylinders 230
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 231
- Copper tube material 231
- O soft annealed h hard drawn 231
- R410a is used under higher working pressure compared to previous refrigerants r22 r407c furthermore the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems therefore gauge manifolds and charge hoses that are used with a previous refrigerant r22 r407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 231
- Service tools 231
- Tool compatibility 231
- Conventional flaring tools can be used when the work process is changed change of work process previously a pipe extension margin of 0 to 0 mm was provided for flaring for r410a air conditioners perform pipe flaring with a pipe extension margin of 1 to 1 mm for clutch type only conventional tool with pipe extension margin adjustment can be used 232
- Differences 2 change of dimension a 232
- Flaring tool 232
- Specifications 2 dimension a 232
- Unit mm 232
- Can not be used 235
- Index index index index 237
- Symbols 237
- Drawings flow charts drawings flow charts drawings flow charts drawings flow charts 239
- Symbols 239
- For further improvement specifications or designs are subject to change without prior notice 242
- Printed in japan 07 2003 ak 242
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