Goodman Mfg CONDENSING AC UNIT SINGLE / THREE PHASE AIR CONDITIONERS Minimum Circuit Ampacity MCA

	5000
MICRONSIN	4500
	3000
	4000
	3500	LEAK(S)
		PRESENT
ACUUMV	2000
	2500
	1500	CONDENSIBLES OR SMALL
		LEAK PRESENT
	1000
		NO LEAKS
	500
		NO CONDENSIBLES

0 1 2 3 4 5 6 7 8 9 10 MINUTES

•If the pressure rises to 1000 microns or less and remains steady the system is considered leak-free; proceed to startup.

•If pressure rises above 1000 microns but holds steady below 2000 microns, moisture and/or noncondensibles may be present or the system may have a small leak. Return to step 2: If the same result is encountered check for leaks as previously indicated and repair as necessary then repeat evacuation.

•If pressure rises above 2000 microns, a leak is present. Check for leaks as previously indicated and repair as nec- essary then repeat evacuation.

Refer to the Remote Condensing Unit Service Manual for more detailed instructions on system evacuation, preliminary charge adjustment, and final charge adjustment.

Electrical Connections

WARNING

HIGH VOLTAGE!

Disconnect ALL power before servicing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death due to electric shock. Wiring must conform with NEC or CEC and all local codes. Undersized wires could cause

poor equipment performance, equipment damage or fire.

WARNING

To avoid the risk of fire or equipment damage, use copper conductors.

NOTICE

Units with reciprocating compressors and non-bleed TXV’s require a Hard Start Kit.

This unit is designed for three phase operation. DO NOT OP- ERATE ON A SINGLE PHASE POWER SUPPLY. Measure the power supply to the unit. The supply voltage must be in agreement with the unit rating plate power requirements.

RATED	MINIMUM SUPPLY	MAXIMUM SUPPLY
VOLTAGE	VOLTAGE	VOLTAGE
208/230V	197	253
460V	414	506

The condensing unit rating plate lists pertinent electrical data necessary for proper electrical service and overcurrent protec- tion. Wires should be sized to limit voltage drop to 2% (max.) from the main breaker or fuse panel to the condensing unit. Consult the NEC, CEC, and all local codes to determine the correct wire gauge and length. The wire size must be sufficient to carry the Minimum Circuit Ampacity (MCA) listed on the serial plate.

The supply voltage can be unbalanced (phase to phase) within 2%. The following formula can be used to determine the per- centage of voltage unbalance for your unit.

Percentage	=	Max. Voltage Deviation Form
Voltage		Average Voltage
Unbalance		Average Voltage

Example:

L1-L2 = 220V

L2-L3 = 216V

Average Voltage =	(220 + 216 + 213)/3
=	649/3

Maximum Deviation from Average = 220 - 216 = 4

%Voltage Unbalance = 100 x (4/216)

=400/216

MAXIMUM ALLOWABLE LENGTH IN FEET

TO LIMIT VOLTAGE DROP TO 2%

Wire	Minimum Circuit Ampacity (MCA)
Size
	10	15	20	25	30	35	40	45
(AWG)
14	75	50	37	NR	NR	NR	NR	NR
12	118	79	59	47	NR	NR	NR	NR
10	188	125	95	75	63	54	NR	NR
8	301	201	150	120	100	86	75	68

6471 314 235 188 157 134 118 110 *Based on NEC 1996

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