Unit installation

Pre-Start
74 SCXF-SVX01K-EN
Units with Electric Heat
• Verify the supply air temperature sensor is
downstream of the electric heat coil.
Electrical
• Verify electrical connections are tight.
Components
• Verify liquid line service valve, and suction and
discharge service valves if present, are open at startup.
Note: Eac
h compressor suction line contains a low
pressure sensor that will shut the compressor
down in low pressure situations. See Table 36,
p. 56.
• Ensure system components are properly set and
installed.
Note: Thermal
expansion valve superheat is factory set
and requires no field adjustment. Operating
superheat should be between 14-20°F. Actual
superheat depends on several factors (operating
conditions, system load step, system charge,
piping and condenser head pressure control.)