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1
1-11-8
Precautions for Installation Using New Refrigerant
1. Care regarding tubing
1-1. Process tubing
●
Material: Use seamless phosphorous deoxidized copper tube for refrigeration. Wall thickness shall comply with the applicable
legislation. The minimal wall thickness must be in accordance with the table below.
●
Tubing size: Be sure to use the sizes indicated in the table below.
F
or the renewal tubing size, refer to the Technical Data.
●
Use a tube cutter when cutting the tubing, and be sure to remove any flash. This also applies to distribution joints (optional).
●
When bending tubing, use a bending radius that is 4 times the outer diameter of the tubing or larger.
CAUTION
Use sufficient care in handling the tubing. Seal the tubing ends with caps or tape to prevent dirt,
moisture, or other foreign substances from entering. These substances can result in system
malfunction.
Unit: mm
Material
Temper - O (Soft copper tube)
Copper tube
Outer diameter
6.35
9.52
12.7
15.88
Wall thickness
0.8
0.8
0.8
1.0
1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R32 refrigerant deterioration
and compressor defects. Due to the features of the refrigerant and refrigerating machine oil, the prevention of water and other
impurities becomes more important than ever.
2. Be sure to recharge the refrigerant only in liquid form.
2-1. Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining refrigerant and recharge
the required total amount of new refrigerant after fixing the leak.
3. Different tools required
3-1. Tool specifications have been changed due to the characteristics of R32.
Some tools for R22- and R407C-type refrigerant systems cannot be used.
Item
Different tools?
(From R22 and
R407C)
R410A tools
compatible
with R32?
Remarks
Manifold gauge
Manifold gauge
Yes
Yes
Types of refrigerant, refrigerating machine oil,
and pressure gauge are different.
Charge hose
Yes
Yes
To resist higher pressure, material must be
changed.
Vacuum pump
Yes
Yes
Use a conventional vacuum pump if it is
equipped with a check valve. If it has no check
valve, purchase and attach a vacuum pump
adapter.
Leak detector
Yes
Yes
Leak detectors for CFC and HCFC that react
to chlorine do not function because R32 and
R410A contains no chlorine. Leak detectors for
HFC can be used for R32 and R410A.
Vacuum pump
Outlet
Inlet
Flaring oil
Yes
Yes
For systems that use R22, apply mineral oil
(Suniso oil) to the flare nuts on the tubing to
prevent refrigerant leakage. For machines that
use R32 or R410A, apply synthetic oil (ether
oil) to the flare nuts.
* Using tools for R22 and R407C can cause defects.
Single-outlet valve
(with siphon tube)
Liquid refrigerant should be
recharged with the cylinder
standing on end as shown.
Valve
Liquid
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Important Information Regarding The Refrigerant Used
This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere.
Refrigerant type: R32
GWP
(1)
value: 675
(1)
GWP = global warming potential
Periodical inspections for refrigerant leaks may be required depending on European or local legislation.
Please contact your local dealer for more information.
Fill in the blanks below with the indelible ink pens.
■
1
: the factory refrigerant charge of the product
■
2
: the additional refrigerant amount charged in the field
■
1
+
2
: the total refrigerant charge
■
(
1
+
2
) x
3
/1000: CO
2
equivalent in tons; multiply the total refrigerant charge by GWP value, then divided by 1000.
4
5
6
7
This product contains fluorinated greenhouse gases.
CO
2
equivalent amount is shown in “CO
2
eq.”
1
2
“CO
2
eq.”
1 000
( ) x
+
1
2
3
1
1
kg
2
2
kg
1
2
3
kg
8
ton
R32
GWP : 675
3
1. Factory refrigerant charge of the product: see unit name plate
2. Additional refrigerant amount charged in the field*
3. Total refrigerant charge
4. Contains fluorinated greenhouse gases
5. Outdoor unit
6. Refrigerant cylinder and manifold for charging
7. GWP(global warming potential) of the refrigerant used in this product
8. CO
2
equivalent of fluorinated greenhouse gases contained in this product
* See the section “1-5. Tubing Size”
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SM830266-00_大洋州向けR32シングルTD&SM.indb 8
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Summary of Contents for Inverter R32 Series
Page 93: ...1 10 10 1 SM830266 00_ R32 TD SM indb 10 18 03 29 10 19 58...
Page 94: ...1 10 11 1 SM830266 00_ R32 TD SM indb 11 18 03 29 10 19 58...
Page 95: ...1 10 12 1 SM830266 00_ R32 TD SM indb 12 18 03 29 10 19 59...
Page 96: ...1 10 13 1 SM830266 00_ R32 TD SM indb 13 18 03 29 10 20 00...
Page 241: ...MEMO 1 13 11 SM830266 00_ R32 TD SM indb 11 18 03 29 10 21 37...