Trane UNT-SVX07A-EN manual electrical, Installation requirements

electrical

Installation requirements

Table I-ER-8. Fan-coil electric heat kW

Unit Size	Unit Voltage	kW	kW	kW	kW	kW	kW	kW	kW	kW	kW	kW
02	115	1.0	1.5	2.0
	230	1.0	1.5	2.0
	277	1.0	1.5	2.0
	208	0.8	1.1	1.5	1.9
03	115	1.0	1.5	2.0	2.5
	230	1.0	1.5	2.0	2.5
	277	1.0	1.5	2.0	2.5
	208	0.8	1.1	1.5	1.9	2.3
04	115			2.0	2.5	3.0
	230			2.0	2.5	3.0
	277			2.0	2.5	3.0
	208			1.5	1.9	2.3	3.0
06	115			2.0		3.0
	230			2.0		3.0	4.0	5.0	6.0
	277			2.0		3.0	4.0	5.0	6.0
	208			1.5		2.3	3.0	3.8	4.5	5.3
08	115			2.0		3.0
	230			2.0		3.0	4.0	5.0	6.0	7.0
	277			2.0		3.0	4.0	5.0	6.0	7.0
	208			1.5		2.3	3.0	3.8	4.5	5.3	6.0
10	115					3.0
	230					3.0	4.0	5.0	6.0	7.0	8.0
	277					3.0	4.0	5.0	6.0	7.0	8.0
	208					2.3	3.0	3.8	4.5	5.3	6.0
12	115					3.0
	230					3.0	4.0	5.0	6.0	7.0	8.0	10.0
	277					3.0	4.0	5.0	6.0	7.0	8.0	10.0
	208					2.3	3.0	3.8	4.5	5.3	6.0

Table I-ER-9. Electric heat kW,		low vertical fan-coils
unit size	unit voltage	kW	kW	kW	kW
03	115	1.0	1.5	2.0
04	115	1.0	1.5	2.0	2.5
06	115	1.0	1.5	2.0	2.5

Low vertical units are only available with electric heat in combination with the two-row cooling coil.

Minimum Circuit Ampacity (MCA) and Maximum Fuse Size (MFS) Calculations for Fan-Coils with Single Phase Electric Heat

Heater amps = (heater kW x 1000)/heater voltage

Note: Use 120V heater voltage for 115V units. Use 240V heater voltage for 230V units.

MCA = 1.25 x (heater amps + all motor FLAs)

MFS or HACR type circuit breaker = (2.25 x largest motor FLA) + second motor FLA + heater amps (if applicable)

HACR (heating, air-conditioning and refrigeration) type circuit breakers are required in the branch circuit wiring for all fan-coils with electric heat.

Select a standard fuse size or HACR type circuit breaker equal to the MCA. Use the next larger standard size if the MCA does not equal a standard size.

Standard fuse sizes are: 15, 20, 25, 30, 35, 40, 45, 50, 60 amps

Fan-coil electric heat MBh = (heater kW) (3.413)

38 UNT-SVX07A-EN