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10

Evacuation

All new installations must be evacuated to a deep vacuum in order that all noncondensible gases

and moisture are removed prior to charging the system. Air in a system causes high condensing

pressure, which increases power consumption and reduces performance. The presence of moisture

in a system can render it inoperable in a very short time. Proper evacuation assures a dry, uncontaminated

system. Here is the recommended evacuation procedure:

1.Connect vacuum pump to both liquid and suction valve service ports.

2.Evacuate the interconnecting tubing and indoor coil to 500 microns or less for a minimum

   of 30 minutes. Close the valve to the vacuum pump and wait 15 minutes. Vacuum should

   not rise above 800 microns. If unable to obtain 500 microns, or vacuum rises above 800

   microns over 15 minutes period, discontinue evacuation, pressurize and check for leaks.

   Repair any leaks found and repeat the step 2.

3.Close valve to the vacuum pump and stop pump.

4.When sure of a tight, well evacuated system, charge with refrigerant.

Charging the System

(For systems with capillary tube or fixed orifice metering device)

Before checking the system charge, make sure that the outdoor unit and indoor coil must be an

approved match per the unit specification. The indoor conditions should be within 2 F of the desired

comfort conditions.

! WARNING

 - 

Do not vent refrigerant to the atmosphere

! It is a violation of federal law to do

so. If the refrigerant needs to be removed from a system to correct the charge inside, always use a

recovery or recycling device.

! WARNING

 -  To prevent personal injury, 

wear safety glasses and gloves when handling

refrigerant

.

1. Check subcooling and superheat.Systems with TXV application should have a subcooling of 

    9±2°F and superheat of 9 to 11°F.

    a.If subcooling and superheat are low,adjust TXV to 9 to 11°F superheat,then check subcooling.

    NOTE:To adjust superheat,turn the valve stem clockwise to increase and counter clockwise to 

    decrease.

    b.If subcooling is low and superheat is high,add  charge to raise subcooling to 9±2°F then check 

      superheat.

    c.If subcooling and superheat are high,adjust TXV valve to 9 to 11°F superheat,then check 

      subcooling.

    d.If subcooling is high and superheat is low,adjust TXV valve to 9 to 11°F superheat and remove 

      charge to lower the subcooling to 9±2°F.

    NOTE:Do not adjust the charge based on suction pressure unless there is a gross undercharge.

2. Disconnect manifold set,installation is complete.

    Subcooling formula=Sat.Liquid Temp.-Liquid line Temp.

Sub-cooling charging for units with TXV

Содержание HR18D2VAE

Страница 1: ...No 0150505381 D HR18D2VAE HR24D2VAE HR30D2VAE 13 SEER 1 5 to 5 0 Tons HR36D2VAE HR42D1VAE HR48D1VAE HR60D1VAE ...

Страница 2: ... vary due to the passage of new laws we suggest that any work on this unit be done by a certified technician Should you have any questions please contact the local EPA office The manufacturer s warranty does not cover any damage or defect to the air conditioner caused by the attachment or use of any components accessories or devices other than those authorized by the manufacturer into onto or in c...

Страница 3: ...eat Pump Improper installation can result in unsatisfactory operation or dangerous conditions Carefully read this manual and any instructions packaged with separate equipment required to make up the system prior to installation Give this manual to the owner and explain its provisions The owner should retain this manual for future reference H R 24 D 2 V A E Example HR24D2VAE Design series 1 1st Gen...

Страница 4: ... 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 1 6 3 8 5 0 3 8 5 0 3 7 1 9 9 7 7 9 7 7 0 4 8 5 0 3 8 5 0 3 7 1 0 1 9 7 7 9 7 7 4 4 8 5 0 3 8 5 0 3 7 1 1 1 9 7 7 9 7 7 2 3 8 7 6 2 8 7 6 2 3 1 8 2 8 6 2 8 6 2 3 8 7 6 2 8 7 6 2 3 1 8 2 8 6 2 8 6 2 3 8 7 6 2 8 7 6 2 3 1 8 2 8 6 2 8...

Страница 5: ...500 56638 55775 54913 54050 ARI data of indoor Cooling Capacity with different outdoor temperature Outdoor Indoor Indoor fan speed Capacity HSPF CFM 10 0 10 20 30 40 50 60 HR18D2VAE HB2400VD2M20 M 16800 7 7 670 5568 7488 9376 11295 13152 15474 18232 21000 HR24D2VAE HB2400VD2M20 H 22000 7 7 900 7000 9413 11787 14200 16533 19453 22920 26400 HR30D2VAE HB3600VD2M20 T L 27800 7 7 1125 8845 11895 14894 ...

Страница 6: ...R Cooling SERVICE VALVE SERVICE PORT DISCHARGE TEMP SENSOR INDOOR COIL DISTRIBUTOR OUTDOOR COIL COMPRESSOR SERVICE PORT ACCUMULATOR HIGH PRESSURE SWITCH LOW PRESSURE DEFROST SENSOR DRIER Heating REVERSING VALVE R E S N E D N O C R O T A R O P A V E REVERSING VALVE R E S N E D N O C R O T A R O P A V E SERVICE VALVE SERVICE PORT SERVICE VALVE SERVICE PORT DISTRIBUTOR DISTRIBUTOR SWITCH SWITCH CHECK...

Страница 7: ...trical power to the unit before servicing Disconnect power to both the indoor and outdoor units NOTE There may be more than one electrical disconnect switch Failure to shut off power can cause electrical shock resulting in personal injury or death Frequent washing of the cabinet fan blade and coil with fresh water Regular cleaning and waxing of the cabinet with good automobile polish A good liquid...

Страница 8: ...ns are made from the service access area The most common application will find the unit best located about 10 from back wall with connection side facing the wall This application minimizes exposed tubing and wiring minimizing the space for youngsters to run around the unit with subsequent damage to the tubing or wiring In more confined application spaces such as corners provide a minimum of 10 cle...

Страница 9: ...not kink or twist the tubing Refrigerant piping should not be installed in a cement slab as this limits access to the refrigerant should a leak be suspected To ensure good oil return to the compressor it is important to pitch the horizontal suction line toward the compressor approximately 1 2 for every 10 of line Line Insulation Suction line requires insulation in order to prevent condensation fro...

Страница 10: ...strated in Figure 4 B 1 Tubing Connections CAUTION Use extreme caution in removing the caps from the suction and liquid line fittings as there is pressure present A fitting is on the liquid line to remove pressure CAUTION Heat Pumps are charged with refrigerant Heat Pump liquid and suction valves are closed to contain the charge within the unit Do not force the valve stem against the retaining rin...

Страница 11: ...h with a wet rag to cool the joint Reinstall the Schrader core in the valve if removed for brazing 8 Pressurize the lines to 150 psi maximum with dry nitrogen Check for leaks at all joints with liquid detergent If a leak is found repair it after removing the nitrogen Repeat the process and re ckeck 9 Do not purge the lines with refrigerant Evacuate the lines and indoor coil Refrigerant Metering De...

Страница 12: ...e outdoor unit and indoor coil must be an approved match per the unit specification The indoor conditions should be within 2 F of the desired comfort conditions WARNING Do not vent refrigerant to the atmosphere It is a violation of federal law to do so If the refrigerant needs to be removed from a system to correct the charge inside always use a recovery or recycling device WARNING To prevent pers...

Страница 13: ...5 11 ...

Страница 14: ...he condensing unit control wiring requires a 24 Volt minimum 25 VA service from the indoor transformer as shown on the wiring diagram 7 SYSTEM STARTUP 1 Turn thermostat to OFF turn on power supply at disconnect switch 2 Turn temperature setting as high as it will go 3 Turn fan switch to ON Indoor blower should run Be sure it is running in the right direction 4 Turn fan switch to AUTO Turn system s...

Страница 15: ...Table 7 included in this manual P14 9 3 Wiring Diagram Refer to the appropriate wiring diagram included in this manual P15 Table 7 Troubleshooting Guide WARNING Disconnect all electrical power to the unit before servicing Disconnect power to both the indoor and outdoor units NOTE There may be more than one electrical disconnect switch Failure to shut off power can cause electrical shock resulting ...

Страница 16: ...bes Replace coil assembly Low vapor cool Low evaporator airflow Increase blower speed or reduce restriction replace air filter compressor iced Operating below 65 F outdoors Add low ambient kit evaporator coil Moisture in the system Recover refrigerant evacuate recharge add filter drier High vapor Excessive load Recheck load calculation pressure Defective compressor Replace Fluctuating head Air or ...

Страница 17: ...HR18 36D2VAE HR42 60D1VAE 15 3 ...

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