Handleiding
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Outer dia. of copper pipe Tightening torque (N·m)
Ø6.35 mm 14 to 18 (1.4 to 1.8 kgf·m)
Ø9.52 mm 30 to 42 (3.0 to 4.2 kgf·m)
Ø12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
• Tightening torque of flare pipe connections
The operating pressure of R32 is higher
than that of R22 (approx. 1.6 times).
It is therefore necessary to firmly tighten
the flare pipe connecting sections (which
connect the indoor and outdoor units)
up to the specified tightening torque.
Incorrect connections may cause not only
a gas leakage, but also damage to the
refrigeration cycle.
Flare at
indoor unit side
Flare at
outdoor unit side
Evacuating
After the piping has been connected to the indoor unit, you can perform the
air purge together at once.
AIR PURGE
Evacuate the air in the connecting pipes and in the indoor unit using a
vacuum pump.
Do not use the refrigerant in the outdoor unit.
For details, see the manual of the vacuum pump.
Using a vacuum pump
Be sure to use a vacuum pump with counter-flow prevention function
so that inside oil of the pump does not flow backward into pipes of the
air conditioner when the pump stops. (If oil inside of the vacuum pump
enters the air conditioner, which use R32, refrigeration cycle trouble may
result.)
1. Connect the charge hose from the manifold valve to the service port of
the packed valve at gas side.
2. Connect the charge hose to the port of the vacuum pump.
3. Open fully the low pressure side handle of the gauge manifold valve.
4. Operate the vacuum pump to start evacuating. Perform evacuating
for about 15 minutes if the piping length is 20 meters. (15 minutes
for 20 meters) (assuming a pump capacity of 27 liters per minute)
Then confirm that the compound pressure gauge reading is
–101 kPa (–76 cmHg).
5. Close the low pressure side valve handle of the gauge manifold valve.
6. Open fully the valve stem of the packed valves (both gas and liquid
sides).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.
Packed valve at liquid side
Service port (Valve core (Setting pin))
Packed valve at gas side
Vacuum
pump
Vacuum pump adapter for
counter-flow prevention
Charge hose
Handle High
(Keep full closed)
Manifold valve
Pressure gauge
Compound pressure gauge
Handle Low
Charge hose
Connecting pipe
–101 kPa
(–76 cmHg)
CAUTION
• KEEP IMPORTANT 7 POINTS FOR PIPING WORK.
(1) Take away dust and moisture (inside of the connecting pipes).
(2) Tighten the connections (between pipes and unit).
(3) Evacuate the air in the connecting pipes using a VACUUM PUMP.
(4) Check gas leak (connected points).
(5) Be sure to fully open the packed valves before operation.
(6) Reusable mechanical connectors and flared joints are not allowed
indoors.
When mechanical connectors are reused indoors, sealing parts shall
be renewed.
When flared joints are reused indoors, the flare part shall be
refabricated.
(7) Don’t operate air conditioner in case no refrigerant in the system.
Packed valve handling precautions
• Open the valve stem all the way out, but do not try to open it beyond the
stopper.
Pipe size of Packed Valve Size of Hexagon wrench
12.70 mm and smallers A = 4 mm
15.88 mm A = 5 mm
Pump down process
1. Turn off the Air Conditioner system.
2. Connect the charge hose from the manifold valve to the service port of
the packed valve at gas side.
3. Turn on the Air Conditioner system in cooling operation more than
10 minutes.
4. Check the operating pressure of the system should be normal value.
(Ref. with product specification)
5. Release the valve rod cap of both service valves.
6. Use the Hexagon wrench to turning the valve rod of Liquid side fully
close. (*Make sure no entering air into the system)
7. Continue operate Air Conditioner system until the gauge of manifold
dropped into the range of 0.5 - 0 kgf/cm².
8. Use the Hexagon wrench to turning the valve rod of Gas side fully close.
And turn off the Air Conditioner system immediately thereafter.
9. Remove the gauge manifold from the service port of the packed valve.
10. Securely tighten the valve rod cap to the both service valves.
CAUTION
• Should be check the compressor operating condition while pumping
down process. It must not any abnormal sound, more vibration.
It is abnormal condition appears and must turn off the air conditioner
immediately.
• Securely tighten the valve cap with torque in the following table:
Cap Cap Size (H) Torque
Valve Rod Cap
H17 - H19
14~18 N·m
(1.4 to 1.8 kgf·m)
H22 - H30
33~42 N·m
(3.3 to 4.2 kgf·m)
Service Port Cap
H14
8~12 N·m
(0.8 to 1.2 kgf·m)
H17
14~18 N·m
(1.4 to 1.8 kgf·m)
Hexagon wrench
is required.
Service Port Cap
Valve Rod Cap
Bekijk gratis de handleiding van Toshiba RAS-H10B2ACV2G-M, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Toshiba |
| Model | RAS-H10B2ACV2G-M |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 2542 MB |
