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Daikin REYQ96PAYD [16/22] Pipe insulation
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12 English
<Vacuum drying>
Evacuate the system from the liquid pipe, suction gas pipe, HP/LP
gas pipe and equalizer pipe shutoff valve service ports by using a
vacuum pump for more than 2 hours and bring the system to
–14.6 psi 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.)
After evacuating the system for 2 hours, pressurize the system to 7.25
psi (vacuum break) with nitrogen gas and evacuate the system again
using the vacuum pump for 1 hour to –14.6 psi or less (vacuum drying).
If the system cannot be evacuated to –14.6 psi 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 rise.
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 gas pip-
ing, 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 withstanding
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 temper-
atures of 248°F or more for the HP/LP gas piping, the equalizer pipe
and the gas piping because the HP/LP 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 : 86°F, humidity : 75% to 80% RH : min.
thickness : 9/16 in..
If the ambient temperature exceeds 86°F and the humidity 80%
RH, then the min. thickness is 3/4 in..
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 pip-
ing because the outside unit is located higher than the indoor unit,
etc., this must be prevented by caulking the connections, etc.
(Refer to figure 25)
• The piping lead-out hole lid should be attached after opening a
knock hole. (Refer to figure 26)
• If small animals and the like might enter the unit through the piping
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 29)
(Refer to figure 25)
1. Insulation material
2. Caulking, etc.
(Refer to figure 26)
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 26) and paint the edges and areas around
the edges using the repair paint.
10. CHECKING OF DEVICE AND INSTALLA-
TION CONDITIONS
Be sure to check the followings.
For those doing electrical work
1.
Make sure there is no faulty transmission wiring or loosing of a nut.
See “7-4 Transmission Wiring Connection Procedure”.
2.
Make sure there is no faulty power wiring or loosing of a nut.
See “7-5 Power Wiring Connection Procedure”.
3.
Has the insulation of the main power circuit deteriorated?
Measure the insulation and check the insulation is above regular
value in accordance with relevant local and national regulations.
For those doing pipe work
1.
Make sure piping size is correct.
See “
6-1 Selection of piping material and Refrigerant branching kit
”
.
2.
Make sure insulation work is done.
See “9. PIPE INSULATION”.
3.
Make sure there is no faulty refrigerant piping.
See “6. REFRIGERANT PIPING”.
11. ADDITIONAL REFRIGERANT CHARGE
AND CHECK OPERATION
The outside unit is charged with refrigerant when shipped from the factory,
but depending on the size and length of the piping when installed, it may
require additional charging.
For charging the additional refrigerant, follow the procedure in this chapter.
And then carry out the check operation.
11-1 Before working
[About the refrigerant tank]
Check whether the tank has a siphon pipe before charging and place
the tank so that the refrigerant is charged in liquid form.
(See the figure below.)
NOTE
• Always use the proper refrigerant (R410A). If charged with the refrig-
erant containing an improper material, it may cause an explosion or
accident.
•
R410A is a mixed refrigerant, so charging it as a gas will cause the refrig-
erant composition to change, which may prevent normal operation.
[Shutoff valve operation procedure]
When operating the shutoff valve, follow the procedure instructed below.
NOTE
• Do not open the shutoff valve until “10. CHECKING OF DEVICE
AND INSTALLATION CONDITIONS” are completed. If the shutoff
valve is left open without turning on the power, it may cause refriger-
ant to buildup in the compressor, leading insulation degradation.
• Be sure to use the correct tools.
The shutoff valve is not a back-seat type. If forced it to open, it might
break the valve body.
• When using a service port, use the charge hose.
• After tightening the cap, make sure no refrigerant gas is leaking.
With siphon pipe
Other tanks
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.)
Stand the tank upside-down and charge.
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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