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Daikin REYQ96PAYD [9/22] 2 protection against contaminationwhen installing pipes
![Daikin REYQ96PAYD [9/22] 2 protection against contaminationwhen installing pipes](/views2/1718197/page9/bg9.png)
English 5
• 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 φ -1/4”-bit. (Refer to figure 10)
(Refer to figure 10)
1. Knock hole
(large : for liquid pipe, suction gas pipe and HP/LP gas pipe)
2. Knock hole (small : for equalizer pipe)
3. Drill
4. 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 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 (3 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 shows the example of connecting refrigerant piping to out-
side units.
• The local inter unit piping next accesorry pipes are field supplyed.
(Refer to figure 12)
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 72PA 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 branching
kit and read the installation instruction manual with the kit.
(Improper installation could lead to malfunctioning or breakdown of
the outside unit.)
<REFNET joint>
Install the REFNET joint so it splits horizontally or vertically.
(Refer to figure 13)
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 14)
1. Horizontal surface
2. B-arrow view
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 11 2
- Figure 12 2
- Figure 4 figure 6 figure 5 2
- Figure 7 figure 8 figure 9 figure 10 2
- Figure 13 figure 14 3
- Figure 15 3
- Figure 16 figure 17 2 3
- Figure 17 1 3
- Figure 18 3
- Figure 19 3
- Figure 20 figure 22 3
- Figure 21 3
- Figure 23 4
- Figure 24 4
- Figure 25 4
- Figure 26 4
- Figure 27 figure 29 4
- Figure 28 4
- Figure 30 4
- Figure 31 4
- 1 safety considerations 5
- Contents 5
- English 1 5
- First of all 5
- 2 special notice of product 6
- English 6
- 1 combination 7
- 2 standard supplied accessories 7
- 3 disposal requirements 7
- 3 option accessory 7
- 4 technical and electrical specifications 7
- 5 main components 7
- English 3 7
- Introduction 7
- Selection of location 7
- 1 selection of piping material and refrigerant branching kit 8
- 1 selection of piping material and refrigerantbranching kit 8
- English 8
- Inspecting and handling the unit 8
- Placing the unit 8
- Refrigerant piping 8
- 2 protection against contamination when installing pipes 9
- 2 protection against contaminationwhen installing pipes 9
- 3 pipe connection 9
- 4 connecting the refrigerant piping 9
- English 5 9
- 1 indicate the outside unit multi connection piping kit 2 in case of multi outdoor system re read outside unit to the first outside unit multi connection piping kit as seen from the indoor unit 10
- 5 example of connection 10
- Actual and equivalent pipe length 10
- Actual pipe length 10
- Actual pipe length equivalent length 10
- Actual pipe length from first refrigerant branch kit either refnet joint or refnet header to indoor unit 130 ft note 2 example 8 b c d e s 130 ft 10
- Allowable length after the branch 10
- Between outside unit 2 and indoor unit 10
- Bold 3 pipes 10
- Branch with refnet joint branch with refnet joint and header branch with refnet header 10
- Bs unit 10
- Difference in height between outside unit and indoor unit h1 164 ft max 130 ft if the outside unit is below difference in height between adjacent indoor units h2 49 ft difference in height between adjacent outside units h3 16 ft 10
- English 10
- Example 6 b 130 ft 8 m n p 130 ft example 8 o 10
- Example 8 a o 10
- Example of connection connection of 8 indoor units 10
- First outside unit multi connection piping kit 10
- Ft equivalent pipe length between outside unit 2 and indoor unit 620 ft note 1 10
- Indoor unit cool heat selection possible 10
- Indoor unit cooling only 10
- Indoor unit side 2 pipes 10
- Multi outside system 10
- Outside unit 10
- Outside unit outside unit 10
- Outside unit side 3 pipes 10
- Pipe length between outside unit 2 and indoor unit 540 ft example 8 a b c d e 540 ft 10
- Piping from bs unit to indoor unit or piping from refrigerant branch kit to indoor unit used as cooling only 10
- Piping from outside unit to bs unit 10
- Single outside system 10
- Suction gas pipe hp lp gas pipe liquid pipe 10
- Suction gas pipe liquid pipe 10
- Thin 2 pipes 10
- Total piping length from outside unit 2 to all indoor unit 3280 ft actual pipe length from first outside unit multi connection piping kit to outside unit 33 ft equivalent pipe length from first outside unit multi connection piping kit to outside unit 43 ft 10
- English 7 11
- Outside unit multi connection piping kit and refrigerant branch kit selection 11
- Pipe size selection 11
- 0 75 1 0 21 1 0 81 75 0 40 10 0 15 1 2 2 1 12
- 11 82 11 lb 12
- A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 3280 ft 12
- A b u r c n s t o p 12
- English 12
- How to calculate the additional refrigerant to be charged 12
- If available on the site use this size otherwise it can not be increased 12
- Increase the pipe size as follows 12
- Indoor units 1 8 12
- Outside unit refnet joint a g 12
- Required conditions example drawings 12
- Round off in units of 0 lb 12
- The farthest indoor unit 8 the nearest indoor unit 1 12
- 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 12
- 1 power circuit safety device and cable requirements 13
- 1 power circuit safety device and cablerequirements 13
- 2 wiring connection example for whole system 13
- 3 leading wire procedure 13
- English 9 13
- Field wiring 13
- 4 transmission wiring connection procedure 14
- 5 power wiring connection procedure 14
- Crimp style terminal 14
- Cup washer 14
- Cut out section 14
- English 14
- Power wire crimp style terminal 14
- 6 procedure for wiring inside units 15
- Air tight test and vacuum drying 15
- English 11 15
- R410a label 15
- Resin hook 15
- Terminal block crip style terminal wire narrow wire thick 15
- 1 before working 16
- Additional refrigerant charge and check operation 16
- Additional refrigerant chargeand check operation 16
- Checking of device and installa tion conditions 16
- Checking of device and installationconditions 16
- English 16
- Pipe insulation 16
- 2 procedure of adding refrigerant charging and check operation 17
- 2 procedure of adding refrigerant charging andcheck operation 17
- English 13 17
- H h i h h h h 17
- J h h h h h h 17
- J h h h i h i 17
- J h h i h h h 17
- J h j h j j h 17
- 2 1 procedure of adding refrigerant charging 18
- Cooling mode 18
- English 18
- H h i h h h h 18
- Heating mode 18
- Less than above range 18
- Outdoor temp 32 f db 109 f db indoor temp 50 f db 90 f db 18
- English 15 19
- 1 before test run 20
- 2 2 procedure of check operation 20
- 2 test run 20
- English 20
- Onsite settings 20
- Test run 20
- 3 checks after test run 21
- Caution for refrigerant leaks 21
- English 17 21
- P215731 8m em09a062a 22
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