Bryant 569C Refrigerant Piping Sizes, Liquid Line Data, Electrical Connections, Ð6Ð

Fig. 5 Ð Typical Compressor Mounting (576B Units)

B. Filter Drier and Moisture Indicator

The ®lter drier is factory installed. Moisture indicator is a ®eld-installed accessory and should be installed just after liq- uid line shutoff valve. Do not use a receiver. A receiver is not supplied with the unit and should not be used.

NOTE: Unit is shipped with R-22 holding charge. System pres- sure must be relieved before removing caps. Recover refrig- erant prior to brazing.

Pass nitrogen or other inert gas through piping while braz- ing to prevent formation of copper oxide.

Install ®eld-supplied thermostatic expansion valve(s) in evapo- rator section. It is recommended that a ®eld supplied liq- uid line solenoid be positioned in the main liquid line (near the evaporator coil). It should be wired to close when com- pressor stops to minimize refrigerant migration during the ``OFF'' cycle.

	Table 2 Ð Refrigerant Piping Sizes
	LINEAR LENGTH OF PIPING Ð FT (M)
	0-25			25-50			50-75		75-100
UNIT	(0-7.6)		(7.6-15.2)			(15.2-22.9)			(22.9-30.5)
					Line Size (in. OD)
	L	S	L		S	L		S	L	S
569C072	1¤2	11¤8	1¤2		11¤8	1¤2		11¤8	1¤2	11¤8
569C090	1¤2	11¤8	1¤2		11¤8	5¤8		11¤8	5¤8	13¤8
569C120	5¤8	11¤8	5¤8		13¤8	5¤8		13¤8	5¤8	13¤8
576B090	1¤2	11¤8	1¤2		11¤8	5¤8		11¤8	5¤8	13¤8
576B102	5¤8	11¤8	5¤8		11¤8	5¤8		13¤8	5¤8	13¤8
576B120	5¤8	11¤8	5¤8		11¤8	5¤8		13¤8	5¤8	13¤8
	LEGEND
L Ð Liquid Line		S Ð Suction Line

NOTES:

1.Pipe sizes are based on a 2° F (1° C) loss for liquid and suction lines.

2.Pipe sizes are based on the maximum linear length shown for each column, plus a 50% allowance for ®ttings.

3.Charge units with R-22 in accordance with unit installation instructions.

4.Line size conversion to mm is:

in. mm

1¤2	12.7
5¤8	15.9
11¤8	28.6
13¤8	34.9

Table 3 Ð Liquid Line Data

		MAX			LIQUID LINE
UNIT	ALLOWABLE			Max Allowable		Max Allowable
	LIQUID LIFT			Pressure Drop		Temp Loss
	Ft		M	psi	kPa	F	C
569C072	86		26.2	7	48.3	2	1
569C090	60		18.3	7	48.3	2	1
569C120	70		21.3	7	48.3	2	1
576B090	60		18.3	7	48.3	2	1
576B102	65		19.8	7	48.3	2	1
576B120	65		19.8	7	48.3	2	1

NOTE: Values shown are for units operating at 45 F (7.2 C) saturated suction and 95 F (35 C) entering air.

V.ELECTRICAL CONNECTIONS

WARNING: The unit cabinet must have an uninter- rupted, unbroken electrical ground to minimize the pos- sibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire con- nected to the unit ground lug in the control compart- ment or conduit approved for electrical ground when installed in accordance with the NEC and local electri- cal codes. Failure to adhere to this warning could re- sult in personal injury.

CAUTION: Failure to follow these precautions could result in damage to the unit being installed:

A.Field Power Supply (Fig. 6-8)

1.Make all electrical connections in accordance with NEC ANSI/NFPA (American National Standards Institute/ National Fire Protection Association) 70, latest edition, and local electrical codes governing such wiring. Refer to unit wiring diagram.

2.Use only copper or copper-cladconductor fan connec- tions between ®eld-supplied electrical disconnect switch and unit. DO NOT USE ALUMINUM WIRE. Maximum wire size is no. 2 AWG (American Wire Gage).

3.Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (also see Table 4). On 3-phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in Table 4, Note 2, to determine the percent voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable warranty.

4.Insulate low-voltage wires for highest voltage con- tained within conduit when low-voltage control wires are run in same conduit as high-voltage wires.

5.Do not damage internal components when drilling through any panel to mount electrical hardware, conduit, etc.

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