Carrier. Installation Instructions. 38AD. SUPERSEDED BY 38AD Accessory Relay Package. For Air-Cooled – Remote Condensing Units. Air Cooled Condensing Unit. Nominal Capacity: ,, Btuh. 38AE Series World’s No.1 Air Conditioning Expert. User manual for the device Carrier AIR-COOLED CONDENSING UNITS 38AD. Online user manual database.

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Use eyebolts and washers supplied in parts package.

Do not sling unshielded unit Skidded unit may be slung, provided sling does not contact unit sides. Do not roll unskidded unit on pipes or wooden pilings. Adjust all corner legs to desired height before attaching to unit. After unit is installed, remove the self-locking bolts one at a time and reassemble with flanged washers and neoprene snubbers as shown in Fig.



Tighten all four bolts. Then, loosen each until the flanged washer can be moved sidewise. Consideration must be given to liquid lift and to compressor oil return. If long liquid lines or vertical lifts greater than 25 ft are used, a liquid line sight glass should be installed at condensing unit and used for charging purposes. After sight glass has cleared, additional charge must be added per Table 8, to flood subcooler circuits in condensers.

After Charging the System, allow unit to run for about 20 minutes. Stop unit and check compressor oil level.

Carrier Air Conditioner 38AD User Guide |

Control Circuit Reset 38ABUNIT Timers in this unit provide basic function, plus 40 sec bypass for oil failure switch and 1 sec delay to accomplish part-winding start.

For specific sequence for each unit, refer to Timing Charts in Fig. Install control with approximately 2 in. Connect thermostat electrical contacts into indoor cooling thermostat circuit or in series with compressor holding coil.


Thermostat is set to cut out at 25 F and cut in at 55 F.

Contact rating is 16 amps and volts. Manufacturer reserves 38aad right to change any product specifications without notice. D or 1 —6 or 2—2.

Certified dimension drawings are available on request. Page 12 i For replacement items use Carrier Specified Parts.

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Carrier 38AD manual – BKManuals

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