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Accessory
Accumulator
Ball Bearing Fan Motor
Compressor Start Assist Capacitor and
Relay
Crankcase Heater
Evaporator Freeze Thermostat
Hard Shutoff TXV
Isolation Relay
Liquid Line Solenoid Valve
Motor Master® Control or
Low Ambient Pressure Switch
Support Feet
* 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 Split---System Longline
Application 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
15 ft (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.
PISTON BODY
Fig. 4 - - Liquid Service Valve
Table 1 – Accessory Usage
REQUIRED FOR LOW --- AMBIENT
COOLING APPLICATIONS
(Below 55°F / 12.8°C)
Standard
Yes{
Yes
Yes
Yes
Yes
Yes
No
Yes
Recommended
PISTON
PISTON
RETAINER
SWEAT/FLARE ADAPTER
A05226
REQUIRED FOR
LONG LINE APPLICATIONS*
(Over 80 ft. / 24.38 m)
Standard
No
Yes
Yes
No
Yes
No
See Long--- Line Application Guideline
No
No
Table 2 – Refrigerant Connections and Recommended Liquid
and Vapor Tube Diameters (In.)
LIQUID
UNIT SIZE
Connection
Diameter
Diameter
018, 024
3/8
030, 036
3/8
042, 048
3/8
060
3/8
Notes:
1. Tube diameters are for total equivalent lengths up to 80 ft. (24.38 m)
2. Do not apply capillary tube or fixed orifice indoor coils to these units.
* For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m)
horizontal or 20 ft. (6.10 m) vertical differential (250 ft./ 76.2 m)Total
Equivalent Length), refer to the Longline Guideline--- Air Conditioners
and Heat Pumps using R--- 22 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.
Fig. 5 - - Liquid Line Filter Drier
Evacuate Refrigerant Tubing and Indoor Coil
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used (see triple evacuation
procedure in service manual). Always break a vacuum with dry
nitrogen.
3
REQUIRED FOR
SEA COAST APPLICATIONS
(Within 2 miles / 3.22 km)
Standard
No
No
No
No
Yes
No
No
No
Recommended
RATED VAPOR
up to 80 ft. (24.38 m)*
Tube
Connection
Tube
Diameter
Diameter
3/8
5/8
5/8
3/8
3/4
3/4
3/8
7/8
7/8
3/8
7/8
1- -1/8
A05227
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