Carrier 48TJE008-014, 48TJD008-014, 48TJF008-012 installation instructions Ð Electrical Data

Route thermostat cable or equivalent single leads of col- ored wire from subbase terminals to low-voltage connec- tions on unit (shown in Fig. 11) as described in Steps 1 - 4 below.

1.If unit is mounted on roof curb and accessory thru-the- curb service plate connection is used, route wire through connection plate.

2.Pass control wires through the hole provided on unit (see connection D in Connection Sizes table in Fig. 7).

3.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. 12. The raceway provides the UL-required (Underwriters' Laboratories) clearance between high- and low-voltage wiring.

4.Connect thermostat wires to screw terminals on low- voltage connection board.

HEAT ANTICIPATOR SETTINGS Ð Set heat anticipator settings at .14 amp for the ®rst stage and .20 amp for second- stage heating.

Table 2 Ð Electrical Data

UNIT	NOMINAL	IFM	VOLTAGE		COMPR		OFM			IFM	COMBUSTION	POWER SUPPLY		DISCONNECT
	VOLTAGE		RANGE		(ea)			(ea)			FAN MOTOR			SIZE*
48TJ		TYPE
	(60 Hz)		Min	Max	RLA	LRA	Hp		FLA	FLA	FLA	MCA	MOCP²	FLA	LRA
	208/230	Std	187	254	13.6	73.4	1¤4		1.4	5.8	.57	39.2/39.2	45/45	41/41	194/194
	(3 phase)
008	460	Std	414	508	6.2	37.7	1¤4		0.8	2.6	.30	18.0	25	19	99
(71¤2 Tons)	(3 phase)
	575	Std	518	632	4.9	31.0	1¤4		0.8	2.6	.30	14.2	20	15	81
	(3 phase)
	208/230	Std	187	254	15.8	92.0	1¤4		1.4	5.8	.57	44.2/44.2	50/50	46/46	231/231
	(3 phase)
009	460	Std	414	508	7.4	46.0	1¤4		0.8	2.6	.30	20.7	25	22	116
(81¤2 Tons)	(3 phase)
	575	Std	518	632	5.9	44.0	1¤4		0.8	2.6	.30	16.5	20	17	107
	(3 phase)
	208/230	Std	187	254	17.9	110.0	1¤4		1.4	5.8	.57	48.9/48.9	60/60	51/51	267/267
	(3 phase)	Alt								7.5		50.6/50.6	60/60	53/53	286/286
012	460	Std	414	508	8.6	55.0	1¤4		0.8	2.6	.30	23.4	30	24	134
(10 Tons)	(3 phase)	Alt								3.4		24.2	30	25	173
	575	Std	518	632	6.4	44.0	1¤4		0.8	2.6	.30	17.6	20	18	107
	(3 phase)	Alt								3.4		18.2	20	19	139
	208/230	Std	187	254	23.0	146.0	1¤4		1.4	10.6	.57	65.2/65.2	80/80	68/68	383/383
	(3 phase)	Alt								15.0		69.6/69.6	80/80	73/73	406/406
014	460	Std	414	508	10.4	73.0	1¤4		0.8	4.8	.30	29.6	35	31	192
(121¤2 Tons)	(3 phase)	Alt								7.4		32.2	35	34	203
	575	Std	518	632	8.3	58.4	1¤4		0.8	4.8	.30	23.6	30	25	154
	(3 phase)	Alt								7.4		25.7	35	27	163

	LEGEND
FLA	Ð Full Load Amps
HACR	Ð Heating, Air Conditioning and Refrigeration
IFM	Ð Indoor (Evaporator) Fan Motor
LRA	Ð Locked Rotor Amps
MCA	Ð Minimum Circuit Amps

EXAMPLE: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

Average Voltage = 452 + 464 + 455

MOCP Ð Maximum Overcurrent Protection
NEC	Ð National Electrical Code
OFM	Ð Outdoor (Condenser) Fan Motor
RLA	Ð Rated Load Amps
UL	Ð Underwriters' Laboratories

=

3

1371

3

*Used to determine minimum disconnect size per NEC. ²Fuse or HACR circuit breaker.

= 457

NOTE: The 575-v 48TJ008-014 units are UL, Canada, only.

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 voltage imbalance.

NOTES:

1. In compliance with NEC requirements for multimotor and combi-

% Voltage Imbalance = 100 x

7

nation load equipment (refer to NEC Articles 430 and 440), the

overcurrent protective device for the unit shall be fuse or HACR

breaker. Canadian units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply volt-

age is greater than 2%. Use the following formula to determine

the percent voltage imbalance.

% Voltage Imbalance

= 100 x	max voltage deviation from average voltage
	average voltage

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%, contact your local electric utility company immediately.

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