SZ1041a photo
Make Up Air Unit Thermostat


· The SZ1041a is a microprocessor-based programmable thermostat designed to control air handling units and make up air units with modulating economizers and/or modulating heating or cooling. The SZ1041a has a 365- day time clock.

pdf  Instructions      pdf  Submittal Data


· 0 to 20 mA or 4 to 20 mA analog PID output
· Stand-alone or network operation
· 365-day time clock with two holiday schedules with automatic leap year and daylight savings correction
· Control based on discharge air, outdoor air, or space temperature
· Adjustable discharge air reset based on space temp.
· Outdoor air sensor input
· Two heating and cooling stages
· Programming option to use two relays for three cooling stages
· Adjustable delay on power-up and start-up for soft starts
· P+I control option on digital stages
· Smart Recovery
· No backup battery required
· Minimum on/off times for HVAC equipment protection
· 32 character LCD display and six status LEDs
· Remote room sensing capability
· User setpoint adjustment limits
· Local and remote override capability
· System and fan switching with access lockouts
· 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