background image

R

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

18

Pointmap Table for SZ1024N (continued)

NPT

NPA

UNITS

POINT DESCRIPTION

RANGE/VALUE

ADDITIONAL NOTES

BD

25

Aux heat 1 relay status

0=off, 1=on

Read only.

BD

26

Aux heat 2 relay status

0=off, 1=on 

Read Only

BD

27

Compressor 1 relay status

0=off, 1=on

Read only.

BD

28

Compressor 2 relay status

0=off, 1=on 

Read only.

BD

29

Fan relay status

0=off, 1=on

Read only.

BD

30

Reverse valve relay status

0=off, 1=on 

Read only.

BD

31

Timeclock relay status

0=off, 1=on

Read only.

BD

32

DI1 status

0=off, 1=on

Read only.

BD

33

DI2 status

0=off, 1=on

Read only.

BD

34

DI3 status

0=off, 1=on

Read only.

BD

35

Override status

0=off, 1=on

Read only. 

BD

36

Device's occupied status

0=Occupied

Read only.

1=Unoccupied

BD

37

Service status

0=OK, 1= fail

Read only. See Note 1.

BD

38

Fan interlock status

0= OK, 1= Fan 

Read only. DI1 Fan Proving.

interlock fail

BD

39

Filter service status

0=OK, 1=check

Read only. DI3 Filter Status.

Filter

BD 

40

Discharge air high limit

0=OK, 1= Above 

Read only. Discharge air function.

high limit

BD

41

Discharge air low limit

0=OK, 1= Below

Read only. Discharge air function.

low limit

BD

42

DI2 service status

0=OK, 1= Check DI2

Read only. DI2 Service.

NOTE 1:  The Service status point represents general Check status, if this is point 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 function. The value overridden will be stored permanently, so the

status attribute will never have any override active status. Because none of these points support the override
release function, the controller will acknowledge the override release function but never release the value. The
controller will respond with NAK error N10 if the value for the override command is outside the limits for that point.
Points that are "Read Only" can not be overridden. The controller will acknowledge the override command, but the
actual change will never happen.

NOTE 3:  All of the points in this map can be adjusted through the keypad except: “Read Only” points and BD points 15 through

24. In the case of loss of communications for 15 minutes (i.e., if the controller is not addressed for 15 minutes), the
controller will revert BD points 15 to 24 to zero value (make them all local requests).

NOTE 4:  Communications are disabled when programming mode or clock/schedule mode is entered via the key pad. Entering

programming mode via the keypad can be disabled.

NOTE 5:  If the temperature in programming step #4 is set to be displayed in degrees Fahrenheit, the values of ADI 6, ADI 18

through ADI 25 and ADI 29 will be Fahrenheit values.  If the temperature is set to be displayed in degrees Celsius,
these ADI values will be in Celsius.  

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...

Reviews: