Emerson 3000 Variable Fan Speed Control Piping, Equivalent lengths feet for various pipe fittings

Air-Cooled Models—Self-Contained Compressor

Table 6	Equivalent lengths (feet) for various pipe fittings
Copper Pipe		90 Degree	90 Degree	45 Degree		Gate	Globe	Angle
O.D. in.		Elbow Copper	Elbow Cast	Elbow	Tee	Valve	Valve	Valve
1/2		0.8	1.3	0.4	2.5	0.26	7.0	4.0
5/8		0.9	1.4	0.5	2.5	0.28	9.5	5.0
3/4		1.0	1.5	0.6	2.5	0.3	12.0	6.5
7/8		1.45	1.8	0.8	3.6	0.36	17.2	9.5
1-1/8		1.85	2.2	1.0	4.6	0.48	22.5	12.0
1-3/8		2.4	2.9	1.3	6.4	0.65	32.0	16.0
1-5/8		2.9	3.5	1.6	7.2	0.72	36.0	19.5
Refrigerant trap = 4 times equivalent length of pipe per this table.

Table 7	Indoor unit refrigerant charge lb (kg)
		R407C
		Approximate Charge
Model		lb (kg)
42A/40A		0.9 (0.4)
67A/65A		1.4 (0.6)

Table 8	Line charges - refrigerant per 100 ft. (30 m) of Type “L” copper tube
		R407C
	Liquid Line		Hot Gas Line
O.D.	lb (kg)		lb (kg)
1/2"	7.3	(3.3)	1.3 (0.6)
5/8"	11.7 (5.3)		2.1 (1.0)
3/4"	16.6 (7.5)		3.0 (1.4)
7/8"	24.4	(11.1)	4.4 (2.0)

Table 9	Condenser refrigerant (per serial tag)
	R407C
	Approximate Charge
	lb (kg)
		Liebert
Model	Fan Speed	Lee-Temp*
083	8 (3)	25 (12)
104	9 (4)	37 (17)
165	15 (6.8)	50 (22.7)

*Charge includes the receiver charge.

3.4Fan Speed Control Systems

The Variable Fan Speed Control systems (FSC & VFD) uses pressure-activated electronic fan speed control systems and remotely located thermostat(s) to ensure operation at ambient temperatures as low as 0°F (-18°C). For this ambient temperature range, the VFD Control Condenser must be used with digital scroll indoor units and can be used for energy savings with any Liebert Challenger 3000 unit.

Variable Fan Speed Control Piping

A discharge line and a liquid line must be field-installed between the indoor unit and the outdoor con- denser. See Figures 15 and 16 for details.

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