Carrier 38AD Installation, Start-Up And Service Instructions Manual page 3

Table 3 — Electrical Data (60-Hz)
V/PH
MWA ICF FU
COMPR
Norn Min-Max
FLA LRA
410 208/3 187-229
68 198
80 49.3 191
510 230/3 198-254
62 179
70 44 3 172
U
1 z 610 460/3
414-506
31 89 35 22.2 86
no 575/3 518-632
24
71
30 17.9 69
400 208/3 187-229 86 184 100 63.6 266 3 2
500 230/3 198-254
78 166
90 57. % 3 2
600 460/3 414-506 39 123 45 28 6 120 1 6
100 575/3 518-632
32 99
35 22.9
96 1.0
fTjTSJ
208/3 187-229
86
184 100 64.0
266
3 2
Kin 230/3 198-254 78 166 90 58.0: Mii/240 3.2 K 11
460/3 414-506
39 123
45 29.0 120
1.6
Euj
575/3 518-632 32 99 40 23.0 96 1 0
Values are for part-winding start.
FLA
— Full Load Amps
FU
— Fuse (max allowable amps; dual element)
ICF
— Max Instantaneous Current Flow (during start-up; sum of
compressor LRA plus F LA of all other motors in the unit)
LRA
— Locked Rotor Amps
MWA
— Minimum Wire Amps per NEC
*Units 38AD012 and 014 have two; unit 38AD016 has three.
Control Circuit Wiring — Control voltage is 115
volts. Install a field-supplied 115-volt thermostat
with minimum rating of one amp (Fig. 4).
If a 24-volt thermostat assembly is to be used,
install Accessory Relay Package 38AD900001 (Fig.
5) above terminal board (TB2) in unit control box.
Three field-supplied no. 10 sheet metal screws are
required. Control box back panel holes are
predrilled.
115-Volt Accessories
Winter Start Control (if required) — Reset and
relocate the unit low pressurestat and install
field-supplied defrost thermostat (Carrier part no.
50BB900001).
LOW PRESSURESTAT - Isolate compressor by
frontseating discharge and suction service valves.
Relieve compressor pressure. Reset the unit low
pressurestat to 5 psig. Disconnect the low pressure¬
stat capillary from compressor crankcase and cap
the unused 1 /4-in. flare fitting on the compressor.
Backseat liquid line service valve to shut service
port. Connect the low pressurestat capillary to the
liquid line service valve service port. Open service
port and compressor service valves.
DEFROST THERMOSTAT - Control is not water¬
proof or moisture resistant. Protect control against
direct contact with moisture or condensation of
moisture on switch insulator. Mount control with
approximately 2 in. of top of thermostat capillary
passing thru lower part of evaporator coil and with
remainder of capillary inserted between fins on
entering air side of coil. Connect thermostat
electrical contacts into indoor cooling thermostat
circuit or in series with compressor holding coil.
NOTE: Defrost thermostat must be used on all
systems operating with outdoor temperatures
below 45 F.
24-Volt Accessories
Motormaster® (32 Series) Head Pressure Controller
— Refer to Installation Instruction shipped with
this accessory plus the following information.
Control box and sensor (thermistor) location
is shown in Fig. 6.
Electrical connections are shown in Fig. 7.
Refer to unit label diagram as required.
Fig. 6 — Motormaster® Control Box and
Sensor Location
3
473