Carrier 25HCB3, 25HCC5 Outdoor Unit Connected To Factory Approved Indoor Unit, Accessory Usage

Table 1 – Accessory Usage

	REQUIRED FOR LOW--- AMBIENT	REQUIRED FOR	REQUIRED FOR
Accessory	COOLING APPLICATIONS		SEA COAST APPLICATIONS
		LONG LINE APPLICATIONS*
	(Below 55°F / 12.8°C)		(Within 2 miles / 3.22 km)
Accumulator	Standard	Standard	Standard
Ball Bearing Fan Motor	Yes{	No	No
Compressor Start Assist Capacitor and	Yes	Yes	No
Relay
Crankcase Heater	Yes	Yes	No
Evaporator Freeze Thermostat	Yes	No	No
Hard Shutoff TXV	Yes	Yes	Yes
Isolation Relay	Yes	No	No
Liquid Line Solenoid Valve	No	See Long--- Line Application	No
		Guideline
Motor Master→ Control or	Yes	No	No
Low Ambient Switch
Support Feet	Recommended	No	Recommended

*For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 20 ft. (6.09 m) vertical differential, refer to Residential Piping and Longline Guideline. { Additional requirement for Low---Ambient Controller (full modulation feature) MotorMasterr Control.

Outdoor Unit Connected To Factory Approved Indoor Unit

Outdoor unit contains correct system refrigerant charge for operation with approved ARI rated indoor unit when connected by

15ft (4.57 m) of field-supplied or factory-accessory tubing, and factory supplied filter drier. Check refrigerant charge for maximum efficiency.

Refrigerant Tubing and Sweat Connections

Connect vapor tube to fitting on outdoor unit vapor service valves (see Table 2). Connect liquid tubing to adapter tube on liquid service valve. Use refrigerant grade tubing.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Service valves must be wrapped in a heat-sinking material such as a wet cloth while brazing.

Remove plastic retainer holding outdoor piston in liquid service valve, leaving the piston and piston retainer inside the valve. Connect sweat/flare adapter provided, to valve. (See Fig. 4.) Connect refrigerant tubing to fittings on outdoor unit vapor and liquid service valves. Service valves are closed from factory and ready for brazing. After wrapping service valve with a wet cloth, tubing set can be brazed to service valve using either silver bearing or non-silver bearing brazing material. Do not use soft solder (materials which melt below 800°F/427°C). Consult local code requirements. Refrigerant tubing and indoor coil are now ready for leak testing. This check should include all field and factory joints.

Table 2 – Refrigerant Connections and Recommended Liquid

and Vapor Tube Diameters (In.)

UNIT SIZE	LIQUID		RATED VAPOR*
	Connection	Tube	Connection	Tube
	Diameter	Diameter	Diameter	Diameter
018, 024	3/8	3/8	5/8	5/8
030, 036	3/8	3/8	3/4	3/4
042, 048	3/8	3/8	7/8	7/8
060, 061	3/8	3/8	7/8	1-1/8

*Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length linesets.

Notes:

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

2.For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.1 m) vertical differential, refer to the Residential Piping and Longline Guideline using Puron refrigerant.

Install Liquid Line Filter Drier Indoor

Refer to Fig. 5 and install filter drier as follows:

1.Braze 5 in. (127 mm) liquid tube to the indoor coil.

2.Wrap filter drier with damp cloth.

3.Braze filter drier to 5 in. (127 mm) long liquid tube from step 1.

4.Connect and braze liquid refrigerant tube to the filter drier.

A05227

Fig. 5 - Liquid Line Filter Drier

25HCB3 / 25HCC5

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Installation of filter drier in liquid line is required.

A05226

Fig. 4 - Liquid Service Valve

3