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11 English
7. When routing out the transmission wiring from the
knockout hole.
8.
When routing out the power/ground wires from the right side.
9. Power wiring
10. Ground wire
11. Transmission wiring
12. When wiring, exercise sufficient caution not to detach the
acoustic insulators from the compressor.
13. Secure to the back side of the support beam using the
accessory clamp (1).
14. Retain to the back of the column support with the acces-
sory clamp (2).
Note
•
After wiring work is completed, check to make sure there are no loose
connections among the electrical parts in the EL.COMPO.BOX (1)
(right).
8. AIR TIGHT TEST AND VACUUM DRYING
• After finished piping work, carry out air tight test and vacuum drying.
Note
• Always use nitrogen gas for the airtightness test.
• Absolutely do not open the shutoff valve until the main power ciruit
insulation measurement has been completed. (measuring after
the shutoff valve is opened will cause the insulation value to drop.)
<Needed tools>
<The system for air tight test and vacuum drying>
• Referring to figure 25, connect an nitrogen tank, refrigerant tank,
and a vacuum pump to the outdoor unit.
The refrigerant tank and the charge hose connection to refrigerant
charge port or the valve A in figure 25 are needed in
“11. ADDI-
TIONAL REFRIGERANT CHARGE AND CHECK OPERATION”
.
(Refer to figure 25)
1. Gauge manifold
2. Nitrogen
3. Measuring device
4. R410A tank (with siphon)
5. Vacuum pump
6. Charge hose
7. Refrigerant charge port
8. HP/LP gas pipe shutoff valve
9. Suction gas pipe shutoff valve
10. Liquid pipe shutoff valve
11. Valve A
12. Valve B
13. Valve C
14. Outdoor unit
15. To BS (or indoor) unit
16. Shutoff valve
17. Service port
18. Field piping
19. Gas flow
Note
• The airtightness test and vacuum drying
should be done using the service ports of
HP/LP gas pipe, suction gas pipe and liquid
pipe shutoff valve.
See the [R410A] Label attached to the front
plate of the outdoor unit for details on the
location of the service port (see figure at right)
• See [Shutoff valve operation procedure] in
“11-1 Before working” for details on han-
dling the shutoff valve.
• The refrigerant charge port is connected to unit pipe.
When shipped, the unit contains the refrigerant, so use caution
when attaching the charge hose.
<Air tight test>
Pressurize the liquid pipe, suction gas pipe and HP/LP gas pipe from
the service ports of each shutoff valve to 4.0MPa (40bar) (do not
pressurize more than 4.0MPa (40bar)). If the pressure does not drop
within 24 hours, the system passes the test.
If there is a pressure drop, check for leaks, make repairs and perform
the airtight test again.
<Vacuum drying>
Evacuate the system from the liquid pipe, suction gas pipe and
HP/LP gas pipe shutoff valve service ports by using a vacuum
pump for more than 2 hours and bring the system to –100.7kPa or
less. 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.
Note
If moisture might enter the piping, follow belows.
(I.e., if doing work during the rainy season, if the actual work
takes long enough that condensation may form on the inside of
the pipes, if rain might enter the pipes during work, etc.)
(1) After performing the vacuum drying for two hours, pressurize to
0.05 MPa (i.e., vacuum breakdown) with nitrogen gas, then
depressurize down to –100.7 kPa for an hour using the vacuum
pump (vacuum drying).
(2) If the pressure does not reach –100.7 kPa even after depressur-
izing for at least two hours, repeat the vacuum breakdown - vac-
uum drying process.
After vacuum drying, maintain the vacuum for an hour and make sure
the pressure does not rise by monitoring with a vacuum gauge.
9. PIPE INSULATION
• Insulation of pipes should be done after performing “8. AIR TIGHT
TEST AND VACUUM DRYING”.
• Always insulate the liquid piping, the HP/LP gas piping, the suc-
tion gas piping, the gas piping and these pipe connections.
Failing to insulate the pipes may cause leaking or burns.
Especially, be sure to insulate the HP/LP gas piping as withstand-
ing as the suction pipe because the suction gas follows in the
HP/LP gas piping when the system is whole cooling mode.
And be sure to use the insulation which can withstand such tem-
peratures of 120°C or more for the HP/LP gas piping and the gas
piping because the high pressure gas follows in these pipings.
• Reinforce the insulation on the refrigerant piping according to the
installation environment. Condensation might form on the surface
of the insulation. Refer to the below.
Ambient temperature : 30°C, humidity : 75% to 80% RH : min.
thickness : 15mm.
If the ambient temperature exceeds 30°C and the humidity
80% RH, then the min. thickness is 20mm.
See the Engineering data book for detail.
• If there is a possibility that condensation on the shutoff 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 caulking the connec-
tions, etc. (Refer to figure 26)
• The piping lead-out hole lid should be attached after opening a
knock hole. (Refer to figure 27)
• If small animals and the like might enter the unit through the pip-
ing lead-out hole, close the hole with blocking material (procured
on site) after completion of “11. ADDITIONAL REFRIGERANT
CHARGE AND CHECK OPERATION”. (Refer to figure 30)
(Refer to figure 26)
1. Insulation material
2. Caulking, etc.
(Refer to figure 27)
1. Piping lead-out hole lid
2. Open a knock hole at “ ”.
3. Block “ ”.
Note
• After knocking out the holes, we recommend you remove burrs in
the knock holes (See figure 27) and paint the edges and areas
around the edges using the repair paint.
Gauge manifold
Charge hose
valve
• To prevent entry of any impurities and insure
sufficient pressure resistance, always use the
special tools dedicated for R410A.
• Use charge hose that have pushing stick for
connecting to service port of shutoff valves or
refrigerant charge port.
Vacuum pump
• The vacuum pump for vacuum drying should
be able to lower the pressure to –100.7kPa
(5 Torr –755mm Hg).
• Take care the pump oil never flow backward
into the refrigerant pipe during the pump stops.
[R410A] Label
01_EN_3P201178-3B.fm Page 11 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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