Bryant 663C X.Make Electrical Connections, → ÐLiquid Service Valve, → Ðaccessory Usage

→TABLE 1ÐREFRIGERANT CONNECTIONS AND RECOMMENDED LIQUID AND VAPOR TUBE DIAMETERS (IN.)

UNIT	LIQUID		VAPOR		VAPOR (LONG LINE)
SIZE	Connection Diameter	Tube Diameter	Connection Diameter	Tube Diameter	Connection Diameter	Tube Diameter
018	3/8	3/8	5/8	5/8	5/8	3/4
024	3/8	3/8	3/4	3/4	3/4	3/4
030, 036	3/8	3/8	3/4	3/4	3/4	7/8
042	3/8	3/8	7/8	7/8	7/8	1-1/8
048, 060	3/8	3/8	7/8	1-1/8	7/8	1-1/8

NOTES:

1.Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult Residential Split System Long-Line Application Guideline.

2.Do not apply capillary tube indoor coils to these units.

PISTON BODY

PISTON

PISTON

RETAINER

X.MAKE ELECTRICAL CONNECTIONS

WARNING: To avoid personal injury or death, do not supply power to unit with compressor terminal box cover removed.

Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate for recommended circuit protection device.

STRAINER

SWEAT/FLARE ADAPTER

→ Fig. 7ÐLiquid Service Valve

A97512

NOTE: Operation of unit on improper line voltage constitutes abuse and could affect unit reliability. See unit rating plate. Do not install unit in system where voltage may fluctuate above or below permissible limits.

NOTE: Use copper wire only between disconnect switch and unit.

NOTE: Install branch circuit disconnect of adequate size per NEC to handle unit starting current. Locate disconnect within sight from and readily accessible from unit, per Section 440-14 of NEC.

A.Route Ground and Power Wires

→ IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.

Remove access panel to gain access to unit wiring. Extend wires from disconnect through power wiring hole provided and into unit control box.

→TABLE 2ÐACCESSORY USAGE

	REQUIRED FOR	REQUIRED FOR	REQUIRED FOR
ACCESSORY	LOW-AMBIENT	LONG-LINE	BURIED LINE
	APPLICATIONS	APPLICATIONS*	APPLICATIONS²
	(BELOW 55°F)	(OVER 50 FT)	(OVER 3 FT)
Crankcase Heater	Yes	Yes	Yes
Evaporator Freeze Thermostat	Yes	No	No
Accumulator	No	No	Yes
Compressor Start Assist	Yes	Yes	Yes
Capacitor and Relay
Low-Ambient Controller,
MotorMaster® Control,	Yes	No	No
or
Low-Ambient Pressure Switch
Wind Baffle	See Low-Ambient Instructions	No	No
Unit Risers	Recommended	No	No
Liquid-Line Solenoid Valve		See Long-Line
or	No	Application	Yes
Hard Shutoff TXV		Guideline
Ball Bearing Fan Motor	Yes³	No	No

*For tubing line sets between 50 and 175 ft, refer to Residential Split System Long-Line Application Guideline. ² For buried line applications, refer to Residential Split System Buried-Line Application Guideline.

³ Required for Low-Ambient Controller (full modulation feature) and MotorMaster Control only.

Ð4Ð