Carrier R-410A manual 40RUA Physical Data, English Cooling Units

Table 1A — 40RUA Physical Data, English — Cooling Units

		UNIT 40RUA*		25		28	30
		NOMINAL CAPACITY (Tons)		20		25	30
		OPERATING WEIGHT (lb)
			Base Unit with TXV	730		1050	1062
			Plenum	225		325	325
		FANS
			Qty...Diam. (in.)	2...15		2...18	2...18
			Nominal Airflow (cfm)	8,000		10,000	12,000
			Airflow Range (cfm)	6,000 – 10,000		7,500 – 12,500	9,000 – 15,000
			Nominal Motor Hp (Standard Motor)
			208/230-3-60 and 460-3-60	5.0		7.5	10.0
			575-3-60	5.0		7.5	10.0
			Motor Speed (rpm)
			208/230-3-60 and 460-3-60	1745		1745	1745
			575-3-60	1745		1755	1755
		REFRIGERANT				R-410A
			Operating charge (lb)	3.5		4.5	5.0
			(approx per circuit) †
		DIRECT-EXPANSION COIL		Enhanced Copper Tubes, Aluminum Sine-Wave Fins
			Max Working Pressure (psig)		450
			Face Area (sq ft)	19.88		24.86	29.83
			No. of Splits	2		2	2
			No. of Circuits per Split	18		20	24
			Split Type...Percentage			Face...50/50
			Fins/in.	17			15
						15
		PIPING CONNECTIONS,
			Quantity...Size (in.)
			DX Coil — Suction (ODF)	2...11/8		2...13/8	2...13/8
			DX Coil — Liquid Refrigerant (ODF)		2...5/8
			Steam Coil, In (MPT)		1...21/2
			Steam Coil, Out (MPT)		1...1/2
			Hot Water Coil, In (MPT)		1...2
			Hot Water Coil, Out (MPT)		1...2
			Condensate (PVC)			1...11/4 ODM/1 IDF
		FILTERS		Throwaway — Factory Supplied
			Quantity...Size (in.)	4...16 x 20 x 2		4...20 x 24 x 2
				4...16 x 24 x 2		4...20 x 25 x 2
			Access Location			Either Side
		STEAM COIL‡
			Max Working Pressure (psig at 260°F)		20
			Total Face Area (sq ft)	13.33			15.0
						15.0
			Rows...Fins/in.	1...10		1...10	1...10
		HOT WATER COIL‡
			Max Working Pressure (psig)		150
			Total Face Area (sq ft)	13.33		15.0	15.0
			Rows...Fins/in.	2...8.5		2...12.5	2...12.5
			Water Volume
			(gal)	13.9		14.3
			(ft3)	1.85		1.90
LEGEND
DX	—		Direct Expansion
TXV	—		Thermostatic Expansion Valve

†Units are shipped without refrigerant charge.

‡Field installed accessory only.

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