background image

14

15

6.3 Pipe length and elevation

The pipe length and the amount of refrigerant is determined by the table below:

Model

Pipe Size

Standard 

Length (m)

Max. Elevation 

B (m)

Max. Length 

A (m)

Additional 

refrigerant (g/m)

Gas

Liquid

LNIV2610

3/8"

(

9.53)

1/4"

(

6.35)

5

8

20

20

LNIV3510

1/2"

(

12.7)

1/4"

(

6.35)

5

8

20

20

LNIV5010

5

10

25

20

LNIV6510

5/8"

(

16.0)

3/8"

(

9.53)

5

10

25

40

 CAUTION

The capacity test is based on the standard length and the maximum permissive length is based on system reliability. 

The oil trap should be installed every 5-7 metres

6.4 Installation for the fi rst time

Air and moisture in the refrigerant system have undesirable effects as detailed below:

•  Pressure in the system rises.

•  Current required to operate the unit increases.

•  Cooling or heating effi ciency drops.

•  Moisture in the refrigerant circuit may freeze and block capillary tubing.

•  Water may lead to corrosion of parts in the refrigerant system.

Therefore, the indoor units and the pipes between indoor and outdoor units must be leak-tested and properly cleared 
to remove gas and moisture from the system.

Gas leak check (Soap water method):

Apply soapy water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections with a soft 
brush to check for leakage at the connecting points of the piping. If bubbles appear, the pipes are leaking.

(Indoor unit)

(Liquid side)

(Gas side)

Vacuum
pump

Vacuum
pump

Lo

Hi

Handle Hi

Two-way valve

Close

Manifold valve

Compound meter

Pressure
gauge

20Pa

Handle Lo

Charge hose

Charge hose

(Outdoor unit)

Close

Three-way valve

1. Air purging with vacuum pump 

1.  Tighten the fl are nuts of the indoor and outdoor units, confi rming that both the 2-way and 3-way valves are set to the “closed” position.

2.  Connect the charge hose with the push pin of handle to the 3-way valve’s gas service port.

3.  Connect the charge hose of Handle Hi connection to the vacuum pump.

4.  Fully open the Handle Lo of the manifold valve.

5.  Turn on the vacuum pump to evacuate all gases.

6.  Run the pump for 30 minutes and check whether the compound meter indicates -0.1Mpa. If this pressure level is not achieved after 

pumping for 50 minutes, please check if there are any leakage points. Fully close the Handle Lo valve of the manifold valve and turn off 
the vacuum pump. Confi rm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump).

7.  Turn the fl are nut of the 3-way valves about 45° counterclockwise for 6 or 7 seconds after the gas has come out, then tighten the fl are 

nut again. Make sure the pressure display in the pressure indicator is a little higher than the atmospheric pressure. Then remove the 
charge hose from the 3 way valve.

8.  Fully open the 2-way and 3-way valves and securely tighten the cap of the 3-way valve.

E963_Lennox Luna Inverter Service Manual 2.indd   14-15

E963_Lennox Luna Inverter Service Manual 2.indd   14-15

21/12/11   10:28 AM

21/12/11   10:28 AM

Содержание LNIV2610

Страница 1: ...is applicable only to the following models LNIV2610 LNIV3510 LNIV5010 LNIV6510 SERVICE MANUAL FOR ROOM AIR CONDITIONER Inverter Split Type E963_Lennox Luna Inverter Service Manual 3 indd 40 1 E963_Le...

Страница 2: ...ile the indoor unit need to be repaired 19 6 7 Re installation while the outdoor unit need to be repaired 21 7 OPERATION CHARACTERISTICS 23 8 ELECTRONIC FUNCTIONS 24 8 1 Abbreviations 24 8 2 Display f...

Страница 3: ...risk of damage or loss of property Do not block the air inlet or outlet vents Use a soft cloth to clean Do not use harsh detergents solvents etc Incorrect cleaning methods may increase the risk of fi...

Страница 4: ...LNEO65V 3 2 Outdoor Unit Model W D H W1 A B LNCO26V 760 285 590 823 530 290 LNCO35V LNCO50V 845 320 700 908 560 335 LNCO65V 900 315 860 980 590 333 3 DIMENSIONS L R H More than 30cm More than 60cm Mo...

Страница 5: ...HANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR 2 WAY VALVE 3 WAY VALVE CHECK VALVE Heating Model only CAPILIARY TUBE REVERSING VALVE Heating Model only COOLING HEATING ACCUMULATOR E963_Lennox Lun...

Страница 6: ...10 11 LNEO50V LNEO65V 5 2 Outdoor Unit LNCO26V LNCO35V E963_Lennox Luna Inverter Service Manual 2 indd 10 11 E963_Lennox Luna Inverter Service Manual 2 indd 10 11 21 12 11 10 28 AM 21 12 11 10 28 AM...

Страница 7: ...ecting power cord should be selected according to the following specifications Rated current of appliance Amps Nominal cross sectional area mm 3 and 6 0 75 6 and 10 1 0 10 and 16 1 5 16 and 25 2 5 The...

Страница 8: ...ide Gas side Vacuum pump Vacuum pump Lo Hi Handle Hi Two way valve Close Manifold valve Compound meter Pressure gauge 20Pa Handle Lo Charge hose Charge hose Outdoor unit Close Three way valve 1 Air pu...

Страница 9: ...the service port cap to a torque of 18Nm Be sure to check for gas leakage 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you...

Страница 10: ...ting the hose 7 Mount the valve stem caps and the service port Use a torque wrench to tighten the service port cap to a torque of 18Nm Be sure to check for gas leakage 1 Confirm that both the 2 way an...

Страница 11: ...the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the serv...

Страница 12: ...the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 6 Moun...

Страница 13: ...3 5 Inverter Module Protection The Inverter module has a protection function related to current voltage and temperature If one of these protection functions occur the corresponding code will display...

Страница 14: ...he indoor fan runs continuously and the speed can be selected as high medium low and auto Auto fan in cooling mode acts as follow 8 4 2 4 Condenser temperature protection 55 T3 60 the compressor frequ...

Страница 15: ...nction is disabled Indoor fan speed can be set as high medium low or auto fan and the anti cold wind function is optional Auto fan action in heating mode 17 15 Low High 44 38 37 34 33 Setting Low Bree...

Страница 16: ...ion mode pressing the touch button will turn off the machine 8 4 6 2 In forced operation mode all general protections and remote control are available 8 4 6 3 Operation rules Forced cooling mode The c...

Страница 17: ...in the air but also bring a fresh and healthy sensation to the user just like being in a forest or standing close to a waterfall This function is available only when the unit is on using the remote co...

Страница 18: ...door PCB Re connect and re test Replace indoor PCB Replace the outdoor e box No No No Yes Yes Yes The unit does not work normally 9 2 3 Fan speed has been out of control 9 2 4 Open or short circuit of...

Страница 19: ...detect an over zero signal When such a failure occurs the main control board must be faulty Does the compressor work Is the refrigerant circulation volume normal Is the protector OK Replace the outdoo...

Страница 20: ...38 39 E963_Lennox Luna Inverter Service Manual 1c indd 38 39 E963_Lennox Luna Inverter Service Manual 1c indd 38 39 13 12 11 4 43 PM 13 12 11 4 43 PM...

Отзывы: