20 - 80 Ton Self Contained Air Conditioners (Trane Company (The))

Specifications - SWUD 20

General Data

Compressors				Evaporator Coil				Economizer Coil
No.	Hp	Capacity Steps %	Gross EER	Face Area				Face Area
No.	Hp	Capacity Steps %	Gross EER	Row	Sq Ft	FPF	Type	Row	Sq Ft	FPF
2	10	100, 53, 0	9.7	2	21.8	144	2 Row	2	21.8	168
							4 Row	4	21 .8	108
Fan			Unit Weight					Filters
No.	Size	Base Unit	With 2 Row Economizer		With 4 Row Economizer	Refrigerant Charge		Quantity	Size
1	16.5"	3180	3310		3510	48 Lbs		4	20 x 18 x 2
								4	20 x 20 x2

Notes:

1. Compressors are Trane 3D™ scroll.

2. EER based on 80/67 degrees F to the evaporator coil, nominal airflow, and 85-95 degree condenser water.

3. All units operate with R-22. Unit ships with full operating charge.

4. Shipping weights will exceed weights in table by approximately 150 lbs.

5. Unit weights include inlet guide vanes and controls, full refrigerant charge, and valves on units with waterside economizer.

6. SWUD 20 does not have enhanced capacity refrigerant tubes.

Electrical Data

Compressors (Each)			200 V		230 V		460 V		575V
	Hp	Kw	RLA	LRA	RLA	LRA	RLA	LRA	RLA	LRA
	10	10.9	33.0	213	35.0	247	14.5	95	11.5	76
Evaporator Fan Motors	Hp	Kw	FLA	LRA	FLA	LRA	FLA	LRA	FLA	LRA
	5	4.7	18.0	105	15.2	91	7.6	46	6.1	37
	7.5	6.6	25.3	152	22.0	132	11.0	66	9.0	54
	10	8.6	32.2	193	28.0	168	14.0	84	11.0	66
	15	13.2	48.3	290	42.0	252	21.0	126	17.0	102
	20	17.2	62.1	373	54.0	324	27.0	162	22.0	132
	25	21.2	78.2	469	68.0	408	34.0	204	27.0	162

Notes:

RLA - Rated load amps

Compressor LRA - Locked rotor amps

Fan Motor LRA - Locked rotor amps, N.E.C. Table 430 - 151

FLA - Full load amps, N.E.C. Table 430 - 150

Compressor KW - Based on 80/70 degrees F to evaporator coil, nominal airflow, and 105 degrees F condensing temperature, 3 phase, 60 Hertz

Fan Motor KW - Based on rated motor horsepower, 3 phase, 60 Hertz Voltage utilization range is + 10 percent

Determination of minimum circuit ampacity (MCA).

MCA 1.25 x largest motor amps (FLA or RLA) + the sum of the remaining motor amps.

Determination of maximum fuse size (MFS) and maximum circuit breaker size (MCB). When compressor is largest load:

MFS and MCB = 2.25 x largest compressor RLA + the sum of the remaining compressor RLA!s + supply fan (FLA).

When supply fan is largest load:

MFS and MCB = 4.0 x supply fan FLA + the sum of the remaining compressor RLxs.

NOTE: Maximum fuse size is for non-time delay fuses.

Electrical Data

Electric Heat	Kw	208 V	480 V
Electric Heat	Kw	Amps	Amps
	18.0	50	21.7

Note:

Electric heat amperage should not be considered when determining minimum circuit ampacity. The current of the unit in the heating mode will not exceed the current of the unit in the cooling mode.

Unit Operating Limits

Max. fan Rpm	Max. fan Motor Hp	Design Airflow		Min. Gpm		Max Gpm	Min. Water Temp.		Maximum Waterside Pressure
		Maximum Cfm	Minimum Cfm	With Econ	Without Econ		Without Valve	With Valve
1505	25	8500	6325	41	36	80	55 F	35 F	400 PSI

Note : Maximum Cfm limits are set to prevent moisture carryover on the evaporator coil. Minimum Cfm limits are set to ensure stable thermal expansion valve operation at low load conditions.

20-80 Ton Self-Contained Air Conditioners - Page 27