Carrier 38TZA Product Data page 22

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 accessory is 55°F (12.8°C).
3. Maximum outdoor operating air temperature is 125°F (51.7°C).
4. For reliable operation, unit should be level in all horizontal planes.
5. Maximum elevation of indoor coil above or below base of outdoor unit is: Indoor coil above = 30 ft, indoor coil
below = 30 ft.
6. For interconnecting refrigerant tube lengths greater than 50 ft, consult Residential Split System Application Guide-
line and Service Manual available from equipment distributor.
7. If any refrigerant tubing is buried, provide a 6 in. vertical rise to the valve connections at the unit. Refrigerant tub-
ing lengths up to 36 in. may be buried without further consideration. For buried lines longer than 3 ft, consult your
local distributor.
8. Use only copper wire for electric connection at unit. Aluminum and clad aluminum 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.
11. Do not deviate from factory supplied TXV's and Liquid-Line Solenoids.
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