Nordyne B5SM -090 B5SM Series 7.5/10T Air Handler Systems, Electrical Configurations, Frequency

B5SM Series

7.5/10T Air Handler Systems

GENERAL NOTES:

1. Disconnect all power before servicing.

Electrical Configurations

Frequency	Single Phase	Three Phase
60 Hz	208-230V	208-230/460V
50 Hz	220V	380V

Figure 6. Wiring for Single and Three Phase Units

2. If wiring must be replaced, use only

105˚C copper wire of the same gauge.

3. For economizer application, remove black wire

from low voltage board “Y” terminal and connect

to yellow wire from economizer.

SINGLE PHASE

			Y Tstat
			FREEZESTAT
	BROWN		BLACK	Y
			SEE
			NOTE 3	R
L2				W1
L1
				W2
G	T1	T2	GREEN	G
				O/B
	L1	L2	BLACK	C
	L1	L2	G
	FIELD SUPPLY CONNECTIONS

LEGEND:

THREE PHASE ONLY NOTES:

1.Three phase units are factory wired for 460V/60Hz or 380V/50Hz operation.

2.To reverse motor rotation, interchange any two field wired line leads.

THREE PHASE

			Y Tstat
		FREEZESTAT
	BROWN		BLACK	Y
L3			SEE
L2			NOTE 3	R
L1				W1
G				W2
T1	T2	T3	GREEN	G
				O/B
L1	L2	L3	BLACK	C
L1	L2	L3	G
FIELD SUPPLY CONNECTIONS

3.Three phase, 60 Hz units may be configured for 208-230V operation by relocating the internal selector pin at the rear of the motor as shown below. (See product literature for more information, if necessary.)

208-230/460V

230230

460 -208 460 -208

ELECTRICAL INFORMATION

13

FIELD WIRING LOW VOLTAGE

7109700

1009