Carrier 38AH044-084 specifications Ð Make Electrical Connections

Step 4 Ð Make Electrical Connections

POWER SUPPLY Ð Electrical characteristics of available power supply must agree with unit nameplate rating. Supply voltage must be within the limits shown in Tables 10A or 10B, 11 and 12. See Table 13 for control circuit data and Table 14 for fan motor electrical data.

IMPORTANT: Operation of unit on improper supply voltage or with excessive phase imbalance constitutes abuse and can affect any Carrier warranty.

FIELD POWER CONNECTIONS Ð All power wiring must comply with applicable local and national codes. Install ®eld- supplied, branch circuit safety disconnect(s) of a type that can be locked off/open. Disconnects must be located within sight of, and readily accessible from, the unit in compliance with NEC (National Electrical Code) (U.S.A. Standard) Article 440-14.

All ®eld power enters the unit through a hole in the con- trol box shelf. Refer to Fig. 20-28 for ®eld wiring details.

MAIN POWER Ð Units 38AH044-104 have single-point power connection to simplify ®eld-power wiring (all power enters at one end). Units 38AH124 and 134 require 2 con- nection points, one for each module. Units may use copper, copper-clad aluminum, or aluminum conductors at all volt- ages. The maximum wire size units can accept per terminal block is 500 kcmil.

Power must be supplied as shown in Table 15.

CONTROL CIRCUIT WIRING Ð Control circuit wiring is accomplished with a step-down transformer on voltage des- ignations 500, 600, and 100 in table below where the pri- mary voltage is ®eld voltage. For 208/230-v, 3-ph, 60-Hz units, ensure that the transformer primary is wired properly for the voltage which will be applied. All control wiring must comply with applicable local and national codes. The safety circuits are 24 v on all units. The safety circuit voltage is created with a step-down transformer where main control voltage is the transformer primary voltage.

See Table 13 for control circuit information.

Table 10A Ð Electrical Data Ð 50/60 Hz (38AH044-084 Dual-Circuit Units)

			STANDARD UNIT							COMPRESSOR*
	Voltage	Compressor	Nameplate	Supply Voltage²					A1			B1
38AH		A1/B1				MCA	MOCP	ICF
	Designation	Model No.	V-Ph-Hz	Min	Max				RLA		LRA	RLA	LRA
	500		208/230-3-60	187	254	179.4	225	434.7	67.9		345	67.9	345
	600		460-3-60	414	508	91.3	100	218.6	34.6		173	34.6	173
044	100		575-3-60	518	632	78.4	100	162.4	28.8		120	28.8	120
	200	06E4250/250	380-3-60	342	418	93.5	125	241.2	34.6		191	34.6	191
	800 (PW)		230-3-50	198	254	180.2	225	296.7	67.9		207	67.9	207
	900		380/415-3-50	342	440	91.5	100	219.6	34.6		173	34.6	173
	300 (PW)		346-3-50	325	367	100.0	125	165.9	33.3		115	33.3	115
	500		208/230-3-60	187	254	206.6	250	535.7	67.9		345	89.7	446
	600		460-3-60	414	508	102.4	125	268.6	34.6		173	43.6	223
054	100	06E4250/265	575-3-60	518	632	88.0	125	206.4	28.8		120	36.5	164
	200		380-3-60	342	418	107.1	150	297.2	34.6		191	45.5	247
	900		380/415-3-50	342	440	102.7	125	269.6	34.6		173	43.6	223
	300 (PW)		346-3-50	325	367	107.0	150	198.9	33.3		115	44.9	148
	500		208/230-3-60	187	254	249.3	350	617.5	89.7		446	106.4	506
	600		460-3-60	414	508	115.5	150	307.6	43.6		223	46.8	253
064	100	06E8265/275	575-3-60	518	632	100.6	125	226.1	36.5		164	40.4	176
	200		380-3-60	342	418	126.9	175	341.1	45.5		247	52.6	280
	900		380/415-3-50	342	440	114.1	150	335.6	43.6		223	46.8	280
	300 (PW)		346-3-50	325	367	129.8	175	230.5	44.9		148	53.8	168
	500		208/230-3-60	187	254	330.5	450	829.0	106.4		506	147.4	690
	600		460-3-60	414	508	148.6	200	408.2	46.8		253	65.4	345
074	100	06E8275/299	575-3-60	518	632	132.2	175	336.8	40.4		176	57.1	276
	200		380-3-60	342	418	174.5	250	458.0	52.6		280	78.8	382
	900		380/415-3-50	342	440	143.0	200	403.8	46.8		280	65.4	345
	300 (PW)		346-3-50	325	367	170.8	250	300.4	53.8		168	79.5	229
	500		208/230-3-60	187	254	371.5	500	870.0	147.4		690	147.4	690
	600		460-3-60	414	508	167.2	225	426.8	65.4		345	65.4	345
084	100	06E8299/299	575-3-60	518	632	148.9	200	353.5	57.1		276	57.1	276
	200		380-3-60	342	418	200.7	250	484.2	78.8		382	78.8	382
	900		380/415-3-50	342	440	167.6	225	428.4	65.4		345	65.4	345
	300 (PW)		346-3-50	325	367	205.3	250	334.9	79.5		229	79.5	229

See page 24 for Legend and Notes.

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