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TCS Basys Controls SZ1017a Product Manual

Modulating thermostats
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Product Manual
Description
The SZ1017a, SZ1041, SZ1051, and SZ1053 are micro-
processor-based programmable thermostats designed
to control air handling units with modulating economiz-
ers and/or modulating heating or cooling. The SZ1041,
SZ1051, and SZ1053 have a 365-day time clock, while
the SZ1017a has a 7-day time clock.
Features
• Stand-alone or network operation
• Outdoor air sensor input with heating & cooling lockout
• Adjustable delay on power-up and start-up for
soft starts
• P+I control option on digital stages
• Smart Recovery
• No battery backup required
• Built-in HVAC equipment protection
• 32 character LCD display
• Six status LEDs for monitoring
• Remote room sensing capability
• User setpoint adjustment limits
• Local and remote override capability
• System and fan switching with access lockouts
• Equipment monitoring inputs and indication
• External time clock input
• Access to programming or schedule may be locked
out or limited with the use of an access code
• Fahrenheit or Celsius temperature display
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
SZ1017a/SZ1041/SZ1051/
SZ1053
Modulating Thermostats
Contents
Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Schedule. . . . . . . . . . . . . . . . . . . . . . . 11
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Limiting Occupant Access . . . . . . . . . . . . . . . . . . . . . . 17
Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mounting
The SZ1017a, SZ1041, SZ1051, and SZ1053 are
designed for wall mounting using two #6 sheet metal
screws, either over a horizontally installed 2" x 4" junc-
tion 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
or cool sources, open doors and windows, unventilated
locations and hot or cold air from diffusers.
If using a remote room sensor, it should be mounted in
the manner described above. The thermostat may then
be mounted in an area which is accessible for adjusting
its settings.
Caution: Remove power from thermostat prior to
mounting.
1
Communicating Thermostats
Communicating Thermostats
. . . . . . . . . . . . . . . . . . . . 15

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Summary of Contents for TCS Basys Controls SZ1017a

  • Page 1: Table Of Contents

    Description Contents The SZ1017a, SZ1041, SZ1051, and SZ1053 are micro- Description ........1...

  • Page 2: Wiring

    Input Wiring for the SZ1017a, SZ1041, SZ1051, and SZ1053 2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com...
  • Page 3 Output Wiring for the SZ1017a* *When Relay outputs are designated as heat and cool, on the SZ1017a, SZ1051, and SZ1053. Ω **Add 500 resistor (included in bag) to convert 0/4 to 20mA to, 0/2 to 10 VDC. Y1 or W1 = Heat...

  • Page 4: Setup

    Setup note: If using remote sensor(s), the calibra- tion may need to be adjusted. See “Checkout and Troubleshooting” section. temPeRAtURe SenSoR SeleCtion KeyPAd ACCeSS The dipswitches in the cover (shown above) must be The dipswitches in the cover (shown above connected set when using remote room, discharge, and/or outdoor with ribbon cable) must be set in order to lock the user sensors.

  • Page 5: Programming

    Programming display type Screen. Choose between TEMP SHOWN IN: FAHRENHEIT and CELSIUS for tempera- The SZ1017a, SZ1041, SZ1051, and SZ1053 may be ture indication. programmed through the keypad on the face, or with a FAHRENHEIT program setup If programming with a PC, the following must be set...
  • Page 6 CLOSED during occupied periods (and setup steps. The default is 248. open during unoccupied periods). program setup SET ACCESS main monitoring Screen. (Date not shown STAGE 2 CODE: on SZ1017a.) DIFF: program setup program setup MON. 08-08-08 12:00 AM (Instructions continued on page 11.)
  • Page 7 SZ1017a Programming Sequences modulating output type Screen. discharge Air high limit Screen. Choose whether the modulating output Enter a discharge air high limit value. 32a. DSCHRGE AIR will use Endpoint or Midpoint Control. This screen will not appear if the dis- 23a.
  • Page 8 SZ1041 Programming Sequences outdoor Air Sensor Function Screen. 27b. ENABLE OUTDOOR Choose whether or not you are using an Second Stage heat Screen. Indicate outdoor air sensor function. To monitor only, AIR FUNCT.? whether the thermostat will control a select NO. See setup instructions for dip- 16b.
  • Page 9 SZ1051 Programming Sequences discharge Air low limit Screen. Enter a discharge air low limit value. modulating output 1 define Screen. 32c. This screen will not appear if the dis- Choose whether the modulating out- DSCHRGE AIR ECON 23c. MOD OUT 1 charge air sensor function is disabled.
  • Page 10 SZ1053 Programming Sequences discharge Air low limit Screen. Enter a discharge air low limit value. This 34d. DISCHARGE AIR modulating output 1 Proportional Band screen will not appear if the discharge air Screen. Enter the number of degrees away sensor function is disabled. LOW LIMIT: 045F from the heating setpoint that the valve or...

  • Page 11: Setting Clock & Schedule

    Setting Clock & Schedule Schedule Announcement Screen. The SZ1017a, SZ1041, SZ1051, and SZ1053 clock and SET OCCUPIED Announces the next screen. schedule may be set through the keypad and display, clock setup TIMES TUESDAY: or with a PC. For more information on programming through the PC, consult your TCS software manual.

  • Page 12: Operation

    Choose YES in programming screen #30d (for the is up, they may press the override again. If "Continuous SZ1017a) or #33c (for the SZ1053) only if you are using Occupied Override" or "Continuous Unoccupied a discharge air sensor and you want to enable the dis- Override"...
  • Page 13 OFF, disabling all outputs, the fan LED will turn off and the service LED will be lit until the The analog output on the SZ1017a is used to control the system is manually reset by switching the system to a heating or cooling in a space.

  • Page 14: Auxiliary Output

    Use programming steps #23d through #29d (for the setpoint before economizer operation will be enabled. SZ1017a) or #23a through #28a (for the SZ1051) or A call for cooling is also required to enable economizer #23c through #32c (SZ1053) to program the operat- operation.

  • Page 15: Daylight Savings Time

    "Daylight Savings delAy on PoWeRUP Time" option within the software and enter the starting The SZ1017a, SZ1041, SZ1051, and SZ1053 have an month + week and the ending month + week. adjustable delay on powerup. When several thermostats...

  • Page 16: Checkout & Troubleshooting

    Checkout & Troubleshooting sequence on after 2 minutes. 9. Press the warmer button until the cooling setpoint is CheCKoUt greater than the current temperature by one degree. note: The fan has a minimum on and off time of 30 The cooling stage(s) will sequence off. The fan will seconds.
  • Page 17 Check wiring. A separate transformer should be used for service status the SZ1017a, SZ1041, SZ1051, or SZ1053, and a sepa- rate transformer should be used for the motor(s). Check to make sure that the analog output is programmed cor- rectly.

  • Page 18: Led Description

    #7. main monitoring Screen. (Date not 08-08-08 shown on SZ1017a.) SyStem SWitChing 12:00AM The option to allow the occupant to change the system mode is allowed by factory default. To lock out access to LED Description system switching, see programming step #5.

  • Page 19: User's Guide

    User’s Guide Inside the hinged door of the thermostat is the Superstat TM User’s Guide. This guide is designed to assist the installer in explaining to the end user how to operate their new thermostat, as well as serve as a handy future reference for the end user.

This manual is also suitable for:

Sz1041Sz1051Sz1053

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