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

11

LED Description                 

Six LEDs on the face allow the occupant to view the current
operating status of the thermostat. 

OCCUPIED

This LED will be lit whenever the unit is operating in the
occupied mode.

HEATING

This LED will be lit when any heat output is closed.

COOLING

This LED will be lit when any cooling output is closed. 

FAN

This LED will be lit when the fan output is closed.

SERVICE

This LED will be lit when the high or low discharge air limit
has been reached, when the fan interlock has indicated
failure,  or when the filter service or service input are closed. 

PROGRAM/DATA

This LED will be lit when the thermostat is within the
programming or clock setup menus. It will blink when the
unit is being accessed by a PC.
Additional monitoring is available by continually pressing the
service key. 

MON  

72F

12:00 AM

DISCHARGE AIR

55F

SERVICE STATUS

OK

TEMP

1.

2.

3.

service

status

service

status

service

status

service

status

fan

Occup ied

H eatin g

C oolin g

Fa n

Service

Pro gram/

COOLER

WARMER

D ata

switch

service

status

system

switch

program

setup

clock
setup

override

OVERRIDE

178 MINUTES

Conventional H/C

continue

Heat Pump

Go to 4b.

ON

Main Monitoring Screen.

Press the service

button to access the 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

discharge air temperature if sensor is used. 

Override Status Screen.

Shows whether 

the override is active and if so, how many
minutes remaining.

HEAT STAGE 1 OFF

COOL STAGE 1    ON

COOL STAGE 3    OFF

4a.

5a.

6a.

HEAT STAGE 2 OFF

COOL STAGE 2    OFF

FAN STATUS       OK

service

status

service

status

7.

DI2 SERVICE      OFF

FILTER                OK

MON 

72F

12:00 AM

service

status

service

status

service

status

COM P STAGE 1   ON

AUX HEAT 1       ON

REV VALVE     OPEN

4b.

5b.

6b.

COM P STAGE 2    OFF

AUX HEAT 2      OFF

FAN STATUS       OK

service

status

service

status

Heat Stages Status Screen. 

Shows

the status of the first and second
stages of heating. 

Cool Stages Status Screen. 

Shows

the status of the first and second
stages of cooling. 

Third Stage and DI1 Status Screen.

Shows the status of the third stage
and the status of the fan interlock if
DI1 is set for fan interlock. 

Compressor Stages Status Screen.

Shows the status of the first and
second stage compressors.  

Auxiliary Heat Stages Status
Screen. 

Shows the status of the first

and second stages auxiliary heat. 

Reversing Valve and DI1 Status
Screen.

Shows the position of the

reversing valve as either heat or cool
and the status of the fan interlock or
DI1. 

DI2 and DI3 Status Screen.

Shows

the cool lockout into DI2 or DI2 status
and filter status or DI3 status. 

Main Monitoring Screen.

Содержание SZ1022N

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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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