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SYSTEM DESIGN SUMMARY
1. Intended for outdoor installation with free air inlet and outlet. Outdoor fan external static pressure available is less than 0.01-in. wc.
2. Minimum outdoor operating air temperature without low-ambient operation accessories is 55°F (12.8°C). For Low Ambient applications see the
Accessory Usage Guideline in this literature for accessory requirements.
3. Maximum outdoor operating air temperature is 125°F (51.7°C).
4. For reliable operation unit should be level in all horizontal planes within 2 degrees (+/– 3/8 in./ft).
5. Maximum elevation of indoor coil above or below base of outdoor unit without additional consideration is 20 ft. For applications greater than 20
ft, consult the Application Guideline and Service Manual for Air Conditioners and Heat Pumps Using Puron® Refrigerant, Long Line Guideline
section. For long line accessories see Accessory Usage Guideline in this literature.
6. For vapor line sizing and capacity losses for interconnecting refrigerant tubing lengths greater than 50 ft consult the Application Guideline and
Service Manual for Air Conditioners and Heat Pumps Using Puron® Refrigerant. Only 3/8 in. liquid lines are approved for long line applications
on Residential products.
7. If any refrigerant tubing is buried, provide a 6 in. vertical rise to the outdoor unit service valve connections. Refrigerant tubing lengths up to 36
in. may be buried without further consideration. Do NOT bury refrigerant lines longer than 36 in.
8. Use only copper wire for electric connections at unit. Aluminum and clad aluminum wiring are NOT acceptable for the type of connector
provided.
9. Do not apply capillary tube indoor coils to these units.
10. Factory-supplied filter drier must be installed. Filter drier must be replaced whenever refrigerant system is opened to the atmosphere for
servicing.
11. Use only the approved TXV or LLS listed in the Accessories section of this literature.
