Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns. The alternate triple evacuation method may be used. See Service Manual for triple evacuation method. Always break a vacuum with dry nitrogen._
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is free of air and liquid water. (See Fig. 4)
5000 |
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4500 |
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4000 | LEAK IN | |
3500 | ||
SYSTEM | ||
3000 | ||
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!WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
The unit cabinet must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes.
Connect Ground and Power Wires
Connect ground wire to ground connection in control box for safety. Connect power wiring to contactor as shown in Fig. 5.
2500 |
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MICRONS2000 |
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| VACUUM TIGHT | |
1500 |
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| TOO WET | ||
1000 |
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| TIGHT | ||
500 |
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| DRY SYSTEM | ||
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0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
DISCONNECT
PER N. E. C. AND/OR LOCAL CODES
FIELD POWER 
WIRING
FIELD GROUND
CONTACTOR |
24ANA
MINUTES |
A95424 |
Fig. 4 - Deep Vacuum Graph
Final Tubing Check
IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.
Make Electrical Connections
!WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Do not supply power to unit with compressor terminal box cover removed.
Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate for recommended circuit protection device.
NOTE: Operation of unit on improper line voltage constitutes abuse and could affect unit reliability. See unit rating plate. Do not install unit in system where voltage may fluctuate above or below permissible limits.
NOTE: Use copper wire only between disconnect switch and unit.
NOTE: Install branch circuit disconnect of adequate size per NEC to handle unit starting current. Locate disconnect within sight from and readily accessible from unit, per Section
Route Ground and Power Wires
Remove access panel to gain access to unit wiring. Extend wires from disconnect through power wiring hole provided and into unit control box.
WIRING
GROUND LUG
A91056
Fig. 5 - Line Power Connections
Connect Control Wiring
Route
For Infinity, connect to ABCD only. For standard
Use No. 18 AWG
All wiring must be NEC Class 1 and must be separated from incoming power leads.
Use furnace transformer or fan coil transformer for control power,
Final Wiring Checks
IMPORTANT: Check factory wiring and field wire connections to ensure terminations are secured properly. Check wire routing to ensure wires are not in contact with tubing, sheet metal, etc.
Compressor Crankcase Heater
Furnish power to crankcase heater a minimum of 24 hr before starting unit. To furnish power to heater only, set thermostat to OFF and close electrical disconnect to outdoor unit.
NOTE: On 24ANA7 models, starting the compressor without a minimum of 12 hours of crankcase heat prior to initial
Install Accessories
Refer to the individual instructions packaged with kits or accessories when installing.
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