Carrier 48/50HJ004-014 Nominal IFM Conv, Power Supply Disconnect Size Unit, Hacr, Nec

NOTE: For wire runs up 50 ft, use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft, use no. 16 AWG insulated wire (35 C minimum). For over 75 ft, use no. 14 AWG insulated wire (35 C minimum). All wire larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.

Pass the control wires through the hole provided in the cor- ner post; then feed wires through the raceway built into the corner post to the 24-v barrier located on the left side of the

control box. See Fig. 10. The raceway provides the UL required clearance between high- and low-voltage wiring.

NOTE: A humidistat and a temperature sensor can be used in place of a thermidistat for PremierLink™ units.

HEAT ANTICIPATOR SETTINGS — Set heat anticipator settings at .14 amp for the first stage and .14 amp for second- stage heating, when available.

Table 1A — Electrical Data (COBRA™ Energy Recovery 48HJ004-007 Units with 62AQ060)

	NOMINAL	IFM	CONV	62AQ	POWER SUPPLY		DISCONNECT SIZE*
UNIT	V-PH-Hz	TYPE	OUTLET	FLA	MCA	FUSE OR	FLA	LRA
						HACR BKR
	208/230-1-60	STD	NO	9.2	34.8/34.8	40/40	35/35	135/135
		STD	YES	9.2	40.8/40.8	45/45	41/41	140/140
		STD	NO	9.2	27.7/27.7	35/35	29/29	124/124
	208/230-3-60	STD	YES	9.2	33.7/33.7	40/35	34/34	129/129
		HIGH STATIC	NO	9.2	28.6/28.6	35/35	30/30	154/154
48HJ004
		HIGH STATIC	YES	9.2	34.6/34.6	40/40	35/35	158/158
		STD	NO	9.2	13.6	20	14	63
	460-3-60	STD	YES	9.2	16.3	20	20	67
		HIGH STATIC	NO	9.2	14.0	20	15	77
		HIGH STATIC	YES	9.2	16.7	20	20	82
	208/230-1-60	STD	NO	9.2	44.4/44.4	60/60	44/44	173/173
		STD	YES	9.2	50.4/50.4	60/60	50/50	178/178
		STD	NO	9.2	31.7/31.7	40/40	33/33	140/140
	208/230-3-60	STD	YES	9.2	37.7/37.7	40/40	38/38	145/145
48HJ005		HIGH STATIC	NO	9.2	32.6/32.6	40/40	34/34	170/170
		HIGH STATIC	YES	9.2	38.6/38.6	45/45	39/39	174/174
		STD	NO	9.2	15.2	20	16	70
	460-3-60	STD	YES	9.2	17.9	20	21	75
		HIGH STATIC	NO	9.2	15.6	20	16	84
		HIGH STATIC	YES	9.2	18.3	20	22	89
	208/230-1-60	STD	NO	9.2	55.5/55.5	70/70	56/56	250/250
		STD	YES	9.2	61.5/61.5	70/70	61/61	255/255
		STD	NO	9.2	38.1/38.1	45/45	39/39	202/202
	208/230-3-60	STD	YES	9.2	44.1/44.1	50/50	44/44	207/207
		HIGH STATIC	NO	9.2	39.8/39.8	45/45	41/41	221/221
48HJ006
		HIGH STATIC	YES	9.2	45.8/45.8	50/50	46/46	226/226
		STD	NO	9.2	19.3	25	20	101
	460-3-60	STD	YES	9.2	22.0	25	25	106
		HIGH STATIC	NO	9.2	20.1	25	20	110
		HIGH STATIC	YES	9.2	22.8	25	26	115
	208/230-3-60	STD	NO	9.2	42.0/42.0	50/50	42/42	234/234
		STD	YES	9.2	48.0/48.0	60/60	48/48	239/239
	208/230-3-60	HIGH STATIC	NO	9.2	43.7/43.7	50/50	44/44	253/253
		HIGH STATIC	YES	9.2	49.7/49.7	60/60	50/50	258/258
48HJ007
		STD	NO	9.2	19.8	25	20	114
	460-3-60	STD	YES	9.2	22.5	25	26	118
		HIGH STATIC	NO	9.2	20.6	25	21	123
		HIGH STATIC	YES	9.2	23.3	30	26	128

	LEGEND
FLA	— Full Load Amps
HACR	— Heating, Air Conditioning and Refrigeration
IFM	— Indoor (Evaporator) Fan Motor
LRA	— Locked Rotor Amps
MCA	— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC	— National Electrical Code
UL	— Underwriters’ Laboratories

*Used to determine minimum disconnect per NEC.

†Single point box CRSINGLE017A00 is part of base unit.

NOTES:

1.In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.

2.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent of volt- age imbalance.

max voltage deviation from average voltage

= 100 x

average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v BC = 464 v AC = 455 v

452 + 464 + 455

Average Voltage =

3

1371

=

3

= 457

Determine maximum deviation from average voltage. (AB) 457 – 452 = 5 v

(BC) 464 – 457 = 7 v (AC) 457 – 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

7

% Voltage Imbalance = 100 x 457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, con- tact your local electric utility company immediately.

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