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Daikin REYQ28PY1 [10/22] 3 pipe connection
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5 English
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 compres-
sors 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 0.02 MPa (0.2kg/cm
2
:
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 interunit piping can be connected either forward or to
the sides (taken out through the bottom) as shown in the figure 10.
When passing out through the bottom, use the knock hole in the
bottom frame.
(Refer to figure 10)
1. Left-side connection
2. Front connection
3. Right-side connection
Precautions when knocking out knock holes
• Open knock hole in the base frame by drilling the 4 concave
around it with a 6mm bit. (Refer to figure 11)
(Refer to figure 11)
1. Knock hole
2. Drill
3. Concave section (4 points)
• Be sure to avoid damaging the casing
• After knocking out the holes, we recommend you 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 outdoor unit, remove
the pinch piping using the procedure in the figure 12.
(Refer to figure 12)
• About handling of shutoff valves, refer to [Shutoff valve opera-
tion 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 dis-
solve the brazing, causing damage.
(Refer to figure 12)
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,
dissolve the brazing using a burner and remove the
pinch piping.
3.
Connecting refrigerant piping to outdoor units
• Figure 13 shows the example of connecting refrigerant piping to
outdoor units.
• The local interunit piping next accesorry pipes are field supplyed.
(Refer to figure 13)
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. Suction gas pipe shutoff valve
7. HP/LP gas pipe shutoff valve
8. Brazing
9. Liquid side accessory pipe (1)
10. Suction gas side accessory pipe (1)
11. HP/LP gas side accessory pipe (1)
12. L type accessory joint (1)
13. L type accessory joint (2)
14. Liquid side accessory pipe (2)
15. Suction gas side accessory pipe (2)
16. HP/LP gas side accessory pipe (2)
17. In case of Q8 type use the Accessory joint for connecting
the Suction gas side accessory pipe (2) to Suction gas
side shutoff valve.
18. Accessory joint
Note
• Make sure the onsite piping does not come into contact with other
piping or the bottom frame or side panels of the unit.
4.
Branching the refrigerant piping
Heed the restrictions below when installing the refrigerant branch-
ing kit and read the installation instruction manual with the kit.
(Improper installation could lead to malfunctioning or breakdown
of the outdoor unit.)
<REFNET joint>
Install the REFNET joint so it splits horizontally or vertically.
(Refer to figure 14)
1. Horizontal
2. A-arrow view
3. Horizontal surface
4. ±30° or less
5. Vertical
<REFNET header>
Install the REFNET header so it splits horizontally.
(Refer to figure 15)
1. Horizontal surface
2. B-arrow view
01_EN_3P201178-3B.fm Page 5 Friday, May 18, 2007 5:21 PM
Содержание
- Installation manual 1
- System air conditioner 1
- Daikin industries ltd 2
- En60335 2 40 2
- Low voltage 2006 95 ec machinery safety 98 37 ec electromagnetic compatibility 89 336 eec 2
- Noboru murata manager quality control department 1st of april 2007 2
- P177868 1c 2
- Umeda center bldg 4 12 nakazaki nishi 2 chome kita ku osaka 530 8323 japan 2
- Figure 1 3
- Figure 10 3
- Figure 11 figure 12 3
- Figure 13 3
- Figure 2 3
- Figure 3 3
- Figure 4 3
- Figure 5 3
- Figure 6 3
- Figure 7 3
- Figure 8 3
- Figure 9 3
- Figure 14 4
- Figure 15 4
- Figure 17 figure 18 4
- Figure 19 4
- Figure 20 4
- Figure 21 figure 23 4
- Figure 22 4
- Figure 24 5
- Figure 25 5
- Figure 26 figure 27 5
- 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
- Installation manual 6
- 1 combination 7
- 2 special notice of product 7
- 3 disposal requirements 7
- English 2 7
- Introduction 7
- 2 standard supplied accessories 8
- 3 option accessory 8
- 4 technical and electrical specifications 8
- 5 main components 8
- English 8
- Selection of location 8
- 1 selection of piping material and refrigerant branching kit 9
- 2 protection against contamination when installing pipes 9
- English 4 9
- Inspecting and handling the unit 9
- Placing the unit 9
- Refrigerant piping 9
- 3 pipe connection 10
- 4 connecting the refrigerant piping 1 10
- English 10
- 5 example of connection 11
- Allowable height difference 11
- Between first outdoor unit multi connection piping kit and outdoor unit in case of multi system 11
- Between outdoor and indoor units between indoor and indoor units between outdoor and outdoor units 11
- English 6 11
- Example of connection connection of 8 indoor units 11
- Maximum allowable length 11
- English 12
- Outdoor unit multi connection piping kit and refrigerant branch kit selection 12
- Pipe size selection 12
- 27 48 27 kg 13
- 50 0 6 1 0 8 3 0 2 156 0 59 20 0 22 1 2 3 0 13
- A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 1000 m 13
- A b u r c n s t o p 13
- English 8 13
- How to calculate the additional refrigerant to be charged 13
- If available on the site use this size otherwise it can not be increased 13
- Increase the pipe size as follows 13
- Indoor units 1 8 13
- Outdoor unit refnet joint a g 13
- Required conditions example drawings 13
- Round off in units of 0 kg 13
- The farthest indoor unit 8 the nearest indoor unit 1 13
- Φ 9 φ 12 φ 12 φ 15 φ 15 φ 19 φ 19 φ 22 φ 22 φ 25 φ 28 φ 31 φ 34 φ 38 13
- 1 power circuit safety device and cable requirements 14
- 2 wiring connection example for whole system 14
- 3 leading wire procedure 14
- English 14
- Field wiring 14
- 4 transmission wiring connection procedure 15
- 5 power wiring connection procedure 15
- 6 procedure for wiring inside units 15
- Crimp style terminal 15
- Cup washer 15
- Cut out section 15
- English 10 15
- Power wire crimp style terminal 15
- Resin hook 15
- Terminal block crip style terminal wire narrow wire thick 15
- Air tight test and vacuum drying 16
- English 16
- Pipe insulation 16
- R410a label 16
- 1 before working 17
- Additional refrigerant charge and check operation 17
- Checking of device and instal lation conditions 17
- Checking of device and installation conditions 17
- English 12 17
- Stand the tank upright and charge the siphon pipe goes all the way inside so the tank does not need be put upside down charge in liquid form 17
- Stand the tank upside down and charge 17
- 2 1 procedure of adding refrigerant charging 1 18
- 2 procedure of adding refrigerant charging and check operation 18
- English 18
- H h i h h h h 18
- J h h h h h h 18
- J h h h i h i 18
- J h h i h h h 18
- J h j h j j h 18
- 2 2 procedure of check operation 19
- English 14 19
- J h h i h h h h h 19
- 1 before test run 20
- 2 test run 20
- 3 checks after test run 20
- Caution for refrigerant leaks 20
- English 20
- Onsite settings 20
- Test run 20
- English 16 21
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