For coastal applications where units are installed within one (1) mile of salt water, epoxy coated models are recommended. These models
have an 8 week lead time after order.
4A7L6018A1000A
4A7L6024A1000A
4A7L6030A1000A
4A7L6036A1000A
4A7L6042A1000A
4A7L6048A1000A
4A7L6060A1000A
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
June 2022
E E p p o o x x y y C C o o a a t t e e d d M M o o d d e e l l
4A7L6018A1COTA
4A7L6024A1COTA
4A7L6030A1COTA
4A7L6036A1COTA
4A7L6042A1COTA
4A7L6048A1COTA
4A7L6060A1COTA
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
1 1 1 1 - - A A C C 4 4 0 0 D D 1 1 - - 1 1 G G - - E E N N
N N o o t t e e : : "Graphics in this document are for representation
Unit Location Considerations Table 1. Unit Dimensions (in inches) and Weight H x D x W (in) Weight * (lb) Models 4A7L6018A1 36.75 x 14 1/2 x 40 26.75 40.0 36.75 14.5 16.5 17.5 36.75 x 14 1/2 x 40 4A7L6024A1 26.75 40.0...
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U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 2.
U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Unit Preparation Check for damage and report promptly to the carrier any damage found to the unit.
Service Valves Table 18. Open the Gas Service Valve 1/4 Turn Only Important: Leak check and evacuation must be completed before opening the service valves. Counterclockwise Note: Do not vent refrigerant gases into the atmosphere. for Full Open Position Remove valve stem cap. Using a wrench, turn valve stem 1/4 turn counterclockwise to the fully open position.
Electrical — Low Voltage Non Communicating Table 20. Low Voltage Maximum Wire Length 24 VOLTS The table defines the maximum total length of low voltage wiring WIRE SIZE MAX. WIRE LENGTH from the outdoor unit, to the indoor unit, and to the thermostat. Note: The use of color coded low voltage wire is recommended to 18 AWG 150 Ft...
E E l l e e c c t t r r i i c c a a l l — — L L o o w w V V o o l l t t a a g g e e N N o o n n C C o o m m m m u u n n i i c c a a t t i i n n g g Electrical —...
E E l l e e c c t t r r i i c c a a l l — — L L o o w w V V o o l l t t a a g g e e N N o o n n C C o o m m m m u u n n i i c c a a t t i i n n g g System Start Up Set the system thermostat to OFF.
Subcooling Charging in Cooling between 55° F and 120° OD Ambient American Standard has always recommended 4. Measure Liquid Line Temperature and Refrigerant installing American Standard approved matched Pressure at service valves. indoor and outdoor systems. 5. Determine total refrigerant line length, and height (lift) if indoor section is above the condenser.
System Charge Adjustment Table 24. Temperature Measurements (Systems can be rated with TXV, EEV or Piston. Ensure charging method is correct). Check the outdoor temperatures. 120° F Subcooling using “Charging Mode-Cooling” is the only recommended method of charging between 55 ° F and 120° F ambient outdoor temperature.
Charging the Unit Table 26. Stabilize the system Wait 20 minutes for the system condition to stabilize between adjustments. Note: When the Liquid Line Temperature and Gage Pressure 20 MIN. approximately match the chart, the system is properly charged. Remove gauges. Replace service port caps to prevent leaks.
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C C h h a a r r g g i i n n g g t t h h e e U U n n i i t t Table 29. Proper Gage Pressure Adjust refrigerant level to attain proper gage pressure. Add refrigerant if the Liquid Gage Pressure is lower than the chart value.
Checkout Procedures The final phase of the installation is the system Checkout Procedures. The following list represents the most common items covered in a Checkout Procedure. Confirm all requirements in this document have been met. ☐ All wiring connections are tight and properly secured. ☐...
Pressure Curves PRESSURE CURVES (Refer below table for models) INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F. Cooling OD Model @SCFM 4A7L6018A1 OUTDOOR TEMPERATURE (Degree F) 4A7L6024A1 INDOOR ENTERING 4A7L6030A1 WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.
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P P r r e e s s s s u u r r e e C C u u r r v v e e s s PRESSURE CURVES (Refer below table for models) INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.
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P P r r e e s s s s u u r r e e C C u u r r v v e e s s PRESSURE CURVES (Refer below table for models) INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.
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P P r r e e s s s s u u r r e e C C u u r r v v e e s s PRESSURE CURVES (Refer below table for models) INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.
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About American Standard Heating and Air Conditioning American Standard has been creating comfortable and affordable living environments for more than a century. For more information, please visit www.americanstandardair.com. The AHRI Certified mark indicates company participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org.