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Daikin RXYQ96PATJ [10/25] 3 pipe connection
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5 English
6. REFRIGERANT PIPING
NOTE
• All field piping must be installed by a licensed refrigeration technician
and must comply with relevant local and national regulations.
• After piping work is complete, do not under any circumstances open
the shutoff valve until “7. FIELD WIRING” and “10. CHECKING OF
DEVICE AND INSTALLATION CONDITIONS” are complete.
•
Do not use flux when brazing the refrigerant piping. Use the phosphor
copper brazing filler metal (B-Cu93P-710/795 : ISO 3677) which does
not require flux.
(Flux has extremely negative effect on refrigerant piping systems. For
instance, if the chlorine based flux is used, it will cause pipe corrosion or,
in particular, if the flux contains fluorine, it will damage the refrigerant oil.)
6-1 Selection of piping material and Refrigerant
branching kit
• Use only pipes which are clean inside and outside and which do not
accumulate harmful sulfur, oxidants, dirt, cutting oils, moisture, or
other contamination. (Foreign materials inside pipes including oils
for fabrication must be 9 mg/10 ft or less.)
• Use the following items for the refrigerant piping.
Material : Jointless phosphor-deoxidized copper pipe
Size : See “6-5 Example of connection” to determine the cor-
rect size.
Thickness : Select a thickness for the refrigerant piping which
complies with national and local laws.
• For piping work, follow the maximum tolerated length, difference in
height, and length after a branch indicated in the “6-5 Example of
connection”.
• Outside unit multi connection piping kit and refrigerant branching kit
(sold separately) are needed for connection of piping between out-
side units (in case of multi system) and piping branches.
Use only separately sold items selected specifically according to the
outside unit multi connection piping kit, the refrigerant branching kit
selection in the “6-5 Example of connection”.
6-2 Protection against contamination
when installing pipes
Protect the piping to prevent moisture, dirt, dust, etc. from enter-
ing the piping.
NOTE
Exercise special caution to prevent dirt or dust when passing piping
through holes in walls and when passing pipe edges to the exterior.
6-3 Pipe connection
• Be sure to perform nitrogen permutation or nitrogen blow when
brazing. (Refer to figure 8)
Brazing without performing nitrogen permutation or nitrogen blow
into the piping will create large quantities of oxidized film on the
inside of the pipes, adversely affecting valves and compressors in
the refrigerating system and preventing normal operation.
(Refer to figure 8)
1. Refrigerant pipe
2. Location to be brazed
3. Nitrogen
4. Taping
5. Handy valve
6. Regulator
• The pressure regulator for the nitrogen released when doing the
brazing should be set to about 2.9 psi (Enough to feel a slight
breeze on your cheek).
NOTE
Do not use anti-oxidants when brazing the pipe joints.
Residue can clog pipes and break equipment.
6-4 Connecting the refrigerant piping
1.
Direction to bring out the pipes
The local inter unit piping can be connected either forward or to the
sides (taken out through the bottom) as shown in the figure 9.
When passing out through the bottom, use the knock hole in the bot-
tom frame.
(Refer to figure 9)
1. Left-side connection
2. Front connection
3. Right-side connection
Precautions when knocking out knock holes
• Open knock hole (large, small) in the base frame by drilling the 4
concave around it with a φ1/4”-bit. (Refer to figure 10)
(Refer to figure 10)
1. Knock hole (large : for liquid pipe, gas pipe and low side
equalizer pipe)
2. Knock hole (small : for high side equalizer pipe)
3. Drill
4. Concave section (4 points)
• Be sure to avoid damaging the casing.
• After knocking out the holes, we recommend you to remove any
burrs and paint them using the repair paint to prevent rusting.
• When passing electrical wiring through the knock holes, protect the wir-
ing with a conduit or bushings, making sure not to damage the wiring.
2.
Removing Pinch Piping
• When connecting refrigerant piping to an outside unit, remove the
pinch piping using the procedure in the figure 11.
(Refer to figure 11)
• About handling of shutoff valves, refer to [Shutoff valve operation
procedure] in “11-1 Before working”.
CAUTION
After removing the gass, remove the pinch piping.
Any gas remaining inside may blow off the pinch piping when you
dissolve the brazing, causing damage.
(Refer to figure 11)
1. Pich piping (4 pieces)
2. Do not remove the relay piping.
3. Pinch piping
4. Procedure 1 : Confirm the shutoff valve is closed.
5. Procedure 2 : Connect a charge hose to the service port of
shutoff valve and remove the gas in the pinch piping.
6. Procedure 3 : After removing the gas in the pinch piping, dis-
solve the brazing using a burner and remove the pinch piping.
3.
Connecting refrigerant piping to outside units
• Figure 12-1, 2 shows the example of connecting refrigerant piping to
outside units.
• The local inter unit piping next accesorry pipes are field supplyed.
• About the detail of connecting pipes between outside units on out-
side unit multi system, refer to the “4. Precautions when connect-
ing piping between outside units” and the installation manual
attached to the outside unit multi connection piping kit.
(Refer to figure 12-1)
1. When connected to the front
2. When connected at lateral side (bottom)
3. Remove the shutoff valve cover to connect.
4. Remove the knock hole on the bottom frame and route the
piping under the bottom frame.
5. Liquid pipe shutoff valve
6. Low side equalizer pipe shutoff valve
7. Gas pipe shutoff valve
8. High side equalizer pipe shutoff valve
9. Brazing
10. Liquid side accessory pipe (1)
11. Low side equalizer accessory pipe (1)
12. Gas side accessory pipe (1)
Place Installation period Protection method
Outdoor
More than a month Pinch the pipe
Less than a month
Pinch or tape the pipe
Indoor Regardless of the period
Содержание
- Installation manual 1
- System air conditioner 1
- Figure 1 figure 3 figure 2 2
- Figure 10 figure 11 figure 12 1 2
- Figure 4 2
- Figure 5 figure 7 figure 8 2
- Figure 6 2
- Figure 9 2
- Figure 12 2 3
- Figure 14 3
- Figure 15 figure 13 3
- Figure 17 3
- Figure 18 1 3
- Figure 18 2 figure 16 3
- Figure 19 3
- Figure 20 4
- Figure 21 4
- Figure 22 4
- Figure 23 4
- Figure 24 4
- Figure 25 4
- Figure 26 5
- Figure 27 figure 28 5
- Figure 29 figure 30 5
- Figure 31 5
- Figure 32 5
- 1 safety considerations 6
- Contents 6
- English 6
- First of all 6
- 2 special notice of product 7
- English 2 7
- When wiring position the wires so that the terminal box lid can be securely fastened improper positioning of the terminal box lid may result in electric shocks fire or the terminals overheating 7
- 1 combination 8
- 2 standard supplied accessories 8
- 3 disposal requirements 8
- 3 option accessory 8
- 4 technical and electrical specifications 8
- 5 main components 8
- English 8
- Introduction 8
- Selection of location 8
- English 4 9
- Inspecting and handling the unit 9
- Placing the unit 9
- 1 selection of piping material and refrigerant branching kit 10
- 1 selection of piping material and refrigerantbranching kit 10
- 2 protection against contamination when installing pipes 10
- 2 protection against contaminationwhen installing pipes 10
- 3 pipe connection 10
- 4 connecting the refrigerant piping 10
- English 10
- Refrigerant piping 10
- Change to pattern 1 or pattern 2 11
- Downward inclination 11
- English 6 11
- Front connections side bottom connections 11
- Pattern 1 11
- Pattern 2 11
- Prohibited pattern 11
- To indoor unit 11
- 4 if the piping length between the outside units exceeds 80 in cre ate a rise of 8 in or more in the gas piping under a length of 80 in from the outside unit multi connection piping kit 12
- Branching the refrigerant piping heed the restrictions below when installing the refrigerant branching kit and read the installation instruction manual with the kit improper installation could lead to malfunctioning or breakdown of the outside unit 12
- English 12
- Gas pipe between outside units 12
- If 80 in or more 12
- If less than 80 in 12
- Install the refnet header so it splits horizontally 12
- Install the refnet joint so it splits horizontally or vertically 12
- Oil remains in the stopping outside unit change to pattern 1 or pattern 2 12
- Oil remains in the unit a when system stops 12
- Prohibited pattern 12
- Refer to figure 14 1 horizontal 2 a arrow view 3 horizontal surface 4 30 or less 5 vertical 12
- Refer to figure 15 1 horizontal surface 2 b arrow view 12
- To indoor unit 12
- 5 example of connection 13
- English 8 13
- Example of connection connection of 8 indoor units 13
- English 14
- Outside unit multi connection piping kit and refrigerant branch kit selection 14
- Pipe size selection 14
- 0 75 1 0 21 1 0 81 75 0 40 10 0 15 2 1 15
- 11 27 11 lb 15
- A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 3280 ft 15
- A b u r c n s t o p 15
- English 10 15
- How to calculate the additional refrigerant to be charged 15
- If available on the site use this size otherwise it can not be increased 15
- Increase the pipe size as follows 15
- Indoor units 1 8 15
- Outside unit refnet joint a g 15
- Required conditions example drawings 15
- Round off in units of 0 lb 15
- The farthest indoor unit 8 the nearest indoor unit 1 15
- Φ 3 8 φ 1 2 φ 1 2 φ 5 8 φ 5 8 φ 3 4 φ 3 4 φ 7 8 φ 7 8 φ 1 φ 1 1 8 φ 1 1 4 φ 1 3 8 φ 1 1 2 15
- 1 power circuit safety device and cable requirements 16
- 1 power circuit safety device and cablerequirements 16
- 2 wiring connection example for whole system 16
- 3 leading wire procedure 16
- English 16
- Field wiring 16
- 4 transmission wiring connection procedure 17
- 5 power wiring connection procedure 17
- Crimp style terminal 17
- Cup washer 17
- Cut out section 17
- English 12 17
- Power wire crimp style terminal 17
- 6 procedure for wiring inside units 18
- Air tight test and vacuum drying 18
- English 18
- R410a label 18
- Resin hook 18
- Terminal block crip style terminal wire narrow wire thick 18
- 1 before working 19
- Additional refrigerant charge and check operation 19
- Additional refrigerant chargeand check operation 19
- Checking of device and installa tion conditions 19
- Checking of device and installationconditions 19
- English 14 19
- Pipe insulation 19
- 2 procedure of adding refrigerant charging and check operation 20
- 2 procedure of adding refrigerant charging andcheck operation 20
- English 20
- H h i h h h h 20
- J h h h h h h 20
- J h h h i h i 20
- J h h i h h h 20
- J h j h j j h 20
- 2 1 procedure of adding refrigerant charging 21
- Cooling mode 21
- English 16 21
- H h i h h h h 21
- Heating mode 21
- Less than above range 21
- Outdoor temp 32 f db 109 f db indoor temp 50 f db 90 f db 21
- English 22
- 1 before test run 23
- 2 2 procedure of check operation 23
- 2 test run 23
- English 18 23
- Onsite settings 23
- Test run 23
- 3 checks after test run 24
- Caution for refrigerant leaks 24
- English 24
- P215731 6m em09a060a 25
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