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2800 LAURA LANE •  MIDDLETON, WI 53562 •  (800) 288-9383 •  FAX (608) 836-9044 •  www.tcsbasys.com

4

Programming                     

The SZ1022N and SZ1024N may be programmed through the
display and keypad, or with a PC. 

If programming with a PC, the following must be set through
the keypad prior to programming:

z

Address (step #3)

z

Temperature scale (step #4) 

For more information on programming through the PC,

consult your software manual. 

PROGRAMMING THROUGH THE KEYPAD

To access the programming screens, press the program setup
button. To make changes, use the warmer and cooler keys.
Access may be locked out with dipswitches, or an access code
may be required. 

fan

Occupied

Heating

Cooling

Fan

Service

Program/

COOLER

WARMER

Data

switch

system

switch

program

setup

clock
setup

override

service

status

program

setup

program

setup

SET ADDRESS:

000

2.

ENTER ACCESS 

000

1.

CODE

MON    

72F

12:00 AM

program

setup

3.

program

setup

program

setup

program

setup

program

setup

program

setup

SET UNOCCUPIED

FAN MODE:

9.

8.

SET OCCUPIED  FAN

MODE:

USER ACCESS TO

FAN MODE?

7.

SET SYSTEM

6.

MODE:

USER ACCESS TO

5.

SYSTEM  MODE?

TEMPS SHOWN IN:

4.

FAHRENHEIT

program

setup

YES

AUTO

YES

ON

AUTO

program

setup

program

setup

12.

UNOCCUPIED HEAT

SETPOINT:

11.

60F

program

setup

10.

DISABLE AUTO FAN

DELAYS:

NO

OCCUPIED HEAT

SETPOINT:

68F

Main Monitoring Screen.

Press the

program setup button to access the
following screens. 

Access Code Entry  Screen.

Will

appear  if access code is required for
programming. Use 248 as the default. If
the wrong code is entered, it will revert to
the previous screen. 

Controller Address Screen.

If using a

PC to access the SZ1022N or SZ1024N,
set a unique address from 1 to 255. 

All

controllers on a network must have a
unique communications address.

Display Type Screen.

Choose between

FAHRENHEIT and CELSIUS for
temperature indication.

System Access Screen. 

Choose

whether or not to enable user’s access
to the system switch to set the system
mode. 

System Mode Screen.

Choose from

AUTO, HEAT, COOL, or OFF for your
system mode. In the OFF mode, all
outputs are off. (A fifth mode,
EMERGENCY HEAT, is used on the
SZ1024N.)

Fan Access Screen. 

Choose whether or

not to enable the user’s access to the
fan switch to set the occupied fan mode. 

Occupied Fan Mode Screen. 

Choose 

between ON (continuous), COOL (gas
heat or no heat), or AUTO for your fan
run times during the occupied modes.
(COOL mode not available on the
SZ1024N.)

Unoccupied Fan Mode Screen.

Choose

from AUTO or COOL for your fan run
times in the unoccupied mode. (COOL
mode not available on the SZ1024N.)

Auto Fan Delay Screen. 

Choose NO

for normal operation. Choose YES to
have the fan and heating or cooling go
on and off at the same time.

Occupied Heat Setpoint Screen.

Set

the occupied heat setpoint.

Unoccupied Heat Setpoint Screen.

Set

the unoccupied heat setpoint.

Summary of Contents for SZ1022N

Page 1: ...ut economizers z Fan interlock safety option z Filter service input and indication z Equipment monitoring inputs and indication z External time clock input z Energy management input for setpoint shift...

Page 2: ...hielded wire is used and the installation environment is free of electrical noise Sensor wire should be kept at least five feet away from line voltage wiring The SZ1022N or SZ1024N accept two remote s...

Page 3: ...in the cover shown above connected with ribbon cable must be set in order to lock the user out of the program and or to set the clock and schedule Use the guide below to set these dipswitches for you...

Page 4: ...g Screen Press the program setup button to access the following screens Access Code Entry Screen Will appear if access code is required for programming Use 248 as the default If the wrong code is ente...

Page 5: ...for heat stage 1 First stage is normally 0 offset Heat Stage 1 Differential Screen Enter a differential value for heat stage 1 Heat Stage 2 Offset Screen Enter an offset value for heat stage 2 This sc...

Page 6: ...his screen only appears if compressor 2 is enabled Compressor Stage 2 Differential Screen Enter a differential value for compressor stage 2 This screen only appears if compressor stage 2 is enabled Au...

Page 7: ...creen Setting Clock and Schedule The SZ1022N and SZ1024N clock and schedule may be set through the display and keypad or with a PC For more information on programming through the PC consult the softwa...

Page 8: ...set DI3 to time clock and close the contact when you want the room occupied such as with a switch or wind up timer If each occupancy period is about the same theaters meetings another option is to se...

Page 9: ...rential consideration and ramps the setpoint when going from the unoccupied mode to the occupied mode At the beginning of the occupied mode the occupied setpoint will be reached many times without the...

Page 10: ...e fan is on whenever the fan LED is on If the fan should be on but the fan LED is off check the fan and system switch modes and the unoccupied fan mode in programming If the fan is off but the fan LED...

Page 11: ...e following screens Service Screen This message may be followed by any or all of the following CHECK FILTER CHECK FAN DISCHARGE HIGH DISCHARGE LOW or CHECK DI2 Discharge Air Temperature Screen Shows d...

Page 12: ...mode is allowed by factory default To lock out access to system switching see programming step 5 SETTING CLOCK SCHEDULE The ability to set the clock and schedule is allowed by factory default An acces...

Page 13: ...e heating setpoint is shifted down ADI 19 Seconds Internal time clock second 0 59 ADI 20 Minutes Internal time clock minute 0 59 ADI 21 DegF C Occupied heating setpoint 40 90 4 32 Occupied heating set...

Page 14: ...s 4 per hour setpoint ramp prior to oc cupancy for both heating and cooling BD 7 Require access code 0 No 1 Yes Programming access from keypad for programming BD 8 Require access code 0 No 1 Yes Clock...

Page 15: ...eck DI2 NOTE 1 The Service status point represents general Check status If this is point is 1 the user can find out the actual failing condition by polling point 38 to 42 If this point is 0 points 38...

Page 16: ...DegF C Occupied heating setpoint 40 90 4 32 Occupied heating setpoint must be less than occupied cooling setpoint ADI 19 DegF C Unoccupied heating setpoint 40 90 4 32 Unoccupied heating setpoint must...

Page 17: ...e access code 0 No 1 Yes Clock Schedule access from keypad for clock schedule BD 9 Enable compressor 2 0 disable 1 enable Disable unused stages recommended BD 10 Enable auxiliary heat 1 0 disable 1 en...

Page 18: ...is 1 then by polling point 38 to 42 the user can find out actual failing condition If this point is 0 then points 38 to 42 will be also 0 NOTE 2 All of the ADI and BD points support the override funct...

Page 19: ...R 2800 LAURA LANE MIDDLETON WI 53562 800 288 9383 FAX 608 836 9044 www tcsbasys com 19...

Page 20: ...R 2800 LAURA LANE MIDDLETON WI 53562 800 288 9383 FAX 608 836 9044 www tcsbasys com 20 Rev 0305...

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