Table 1 – Accessory Usage
| REQUIRED FOR | 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) | ||
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Accumulator | Standard | Standard | Standard | |
Ball Bearing Fan Motor | Yes{ | No | No | |
Compressor Start Assist Capacitor and | Yes | Yes | No | |
Relay | ||||
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Crankcase Heater | Yes | Yes | No | |
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Evaporator Freeze Thermostat | Yes | No | No | |
Hard Shutoff TXV | Yes | Yes | Yes | |
Isolation Relay | Yes | No | No | |
Liquid Line Solenoid Valve | No | See | No | |
Motor Master→ Control or | Yes | No | No | |
Low Ambient Switch | ||||
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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
Always Ask For
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
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
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
A05226
Fig. 4 - Liquid Service Valve
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 | |
*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.
Installing with Indoor Piston
Outdoor Unit Connected to Factory Approved Indoor Unit
Check piston size shipped with indoor unit to see if it matches required indoor piston size. If it does not match, replace indoor piston with correct piston size.
NOTE: Correct pistons are shipped with outdoor units in the accessory bag and are only qualified for piston fan coils. Example fan coils with piston: FB4C and FY5B (1.5 through 4 ton)
When changing indoor piston, use a back−up wrench. Hand tighten hex nut, then tighten with wrench 1/2 turn. Do not exceed 30 ft−lbs. The indoor piston contains a Teflon ring (or seal) which is used to seat against the inside of distributor body, and must be installed properly to ensure proper seating. See Fig. 5.
13/16” BRASS HEX NUT |
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| TEFLON→ SEAL |
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| TEFLON→ |
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| 3/4” BRASS HEX BODY | ||
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| RINGS |
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| “H” DISTRIBUTOR | ||
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PISTON
PISTON RETAINER
A10342
Fig. 5 - Indoor Piston Installation
223A / 225B
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