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2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
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SZ1022N/SZ1024N
Conventional Multistage
Heating & Cooling/Heat Pump
Thermostats
Product Manual
Description
The SZ1022N and SZ1024N are microprocessor-based
programmable thermostats designed for conventional
multistage heating-and-cooling and heat pump applications,
respectively. Both the SZ1022N and SZ1024N feature a 7-day
time clock.
Features
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Stand-alone or network operation
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Discharge air sensor input with high and low limits
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The SZ1022N offers up to three stages heating and two
stages cooling, or two stages heating and three stages
cooling, while the SZ1024N offers up to two compressor
and two auxiliary heat stages
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Adjustable delay on powerup for soft starts
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P+I control option
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Smart Recovery
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No backup battery required
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Built-in HVAC equipment protection
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32 character LCD display
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Six LEDs for status monitoring
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Remote room sensing capability
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User setpoint adjustment limits
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Local and remote override capability
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System and fan switching with access lockouts
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Auxiliary time clock output (economizers)
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Fan interlock safety option
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Filter service input and indication
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Equipment monitoring inputs and indication
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External time clock input
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Energy management input for setpoint shift.
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Access to programming or schedule may be locked out or
limited with the use of an access code
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Fahrenheit or Celsius temperature display
Contents
Description ...............................................................................1
Features ....................................................................................1
Mounting ..................................................................................1
Wiring.......................................................................................2
N2 Bus Connections ................................................................2
Setup.........................................................................................3
Programming............................................................................4
Setting Clock and Schedule .....................................................7
Operation..................................................................................8
Checkout and Troubleshooting ................................................9
LED Description ....................................................................11
Limiting Occupant Access .....................................................12
User’s Guide ..........................................................................12
N2 Point Mapping Table (SZ1022N).....................................13
N2 Point Mapping Table (SZ1024N).....................................16
Mounting
The SZ1022N and SZ1024N are designed for wall mounting
using two #6 sheet metal screws, either over a horizontally
installed 2” x 4” junction box, or directly to block or drywall.
For best results, the thermostat should be mounted on an
interior wall which reflects normal room environment, at a
height of approximately five feet from the floor. Avoid areas
exposed to direct sunlight, unusual heat sources, open doors
and windows, or unventilated locations.
If using a remote room sensor, it should be mounted in the
manner described above. The thermostat may be mounted in
an area which is accessible for adjusting its settings.
Communicating Thermostats
Version 1.2
