Installation guide

Table1 - AccessoryUsage
REQUIREDFORLOWAMBIENT
COOLINGAPPLICATIONS
(17SEERProductOnly) REQUIREDFORLONGLINE Requiredfor Sea CoastApplica-
Accessory (Below 55°F / 12,8°C) APPLICATIONS*(Over80 ft. / 24,38 m) tion (within2 miles/3,22 km)
Crankcase Heater YesStandard on some units Yes,standard on some units No
Compressor StartAssist Ca-
No No No
pacitorand Relay
LiquidLine Solenoid Valve No See Long LineApplications Guideline No
Support Feet Recommended No Recommended
Yes(Standardwith factory approved Yes (Standardwith factory approved in- Yes (Standardwith factoryap-
Hard Shutoff TXV
indoorunit) door unit) proved indoor unit)
Evaporator Freeze Thermostat Yes No No
Low-Ambient Pressure Switch Yes No No
Winter Start Control Yes No No
For tubing line sets between 80 and 200 ft, (24.38 and 60,96 m) and/or 20 ff, (6.09 m) vertical differential, refer to Long Line Applications Guideline.
Table 2 - Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)
RATEDVAPOR
LIQUID up to 80ft, (24,38m)*
Connectionand Tube Connection RatedTube
UNIT SIZE Diameter Diameter Diameter
"0A724 3/8 3/4 3/4
"0A924 3/8 7/8 7/8
"0A736, "0A936 3/8 7/8 7/8
"0A748, "0A948 3/8 7/8 1-1/8
"0A760, "0A960 3/8 7/8 1-1/8
Units are rated with 25 ft. (7.6 m) of lineset. See Specification sheet for performance data when using different size and length linesets.
Notes:
1. Do not apply capillary tube or fixed orifice indoor coils to these units.
2. For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 35 ft. (10.7 m) vertical differential 250 ft. (76.2 m) Total Equivalent Length), refer to the Long
Line Applications Guideline.
Install Liquid Line Filter Drier Indoor Refrigerant Tubing Connection Outdoor
Connect vapor and liquid tubes to fittings on vapor and liquid
service valves (see Table 2.) Use refrigerant grade tubing.
Sweat Connection
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.
Filter drier must be wrapped in a heat-sinking material
such as a wet cloth while brazing.
Refer to Fig. 3 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 above 5 in. (127 mm) liquid tube. Flow
arrow must point towards indoor coil.
4. Connect and braze liquid refrigerant tube to the filter drier.
Figure 3 J Liquid Line Filter Drier
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.
Service valves are closed from factory and ready for brazing.
After wrapping service valve with a wet cloth, braze sweat
connections using industry accepted methods and materials.
Consult local code requirements. Refrigerant tubing and indoor
coil are now ready for leak testing. This check should include all
field and factory joints.
Evacuate Refrigerant Tubing and Indoor Coil
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.
4 specificationssubjectto change without notice. 421 01 1702 04