The SZ1020 Series features:
• Stand-alone or network operation
• 7-day time clock
• Discharge air sensor input with high and low limits
• Conventional model offers up to three heating and
two cooling stages, or two heating and three cooling
stages
• Heat pump model offers two compressor stages, two
auxiliary heat stages and a configurable reversing
valve output
• Adjustable delay on power-up and start-up for soft
starts
• P+I control option
• Smart recovery
• No battery backup required
• Minimum on/off times for HVAC equipment protection
• 32-character LCD display
• Six status LEDs
• Remote room sensing capability
• User setpoint adjustment limits
• Local override and remote override capability
• System and fan switching with access lockouts
• Auxiliary time clock output (economizers)
• Fan interlock safety option
• Filter service input and indication
• Equipment monitoring inputs and indication
• External time clock input
• Energy management input for setpoint shift
• Access to programming or schedule may be locked
out or limited with the use of an access code
• Fahrenheit or Celsius temperature display