EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
72-2958—12
General Considerations .................................................................................. 35
W7750 Controllers .......................................................................................... 36
FACTORY DEFAULT DIGITAL OUTPUTS:................................................ 37
L
ON
W
ORKS
® Bus Termination Module ........................................................... 43
Step 5. Order E
uipment ..................................................................................... 45
Step 6. Confi
ure Controllers............................................................................... 48
Step 7. Troubleshootin
....................................................................................... 48
Troubleshootin
Excel 10 Controllers and Wall Modules ............................... 48
Temperature Sensor and Setpoint Potentiometer Resistance Ran
es .......... 49
Alarms ............................................................................................................ 49
Broadcastin
the Service Messa
e ................................................................ 50
W7750 Controller Status LED ........................................................................ 50
T7770C,D Wall Module B
pass Pushbutton and Override LED ..................... 51
T7560A,B Di
ital Wall Module B
pass Pushbutton and LCD Displa
Occupanc
S
mbols .......................................................................................................... 51
Appendices.................................................................................................................................. 51
Appendix A. Usin
E-Vision to Commission a W7750 Controller......................... 51
Sensor Calibration .......................................................................................... 51
Settin
the Pid Parameters ............................................................................ 51
Appendix B. Se
uences of Operation.................................................................. 52
Common Operations ...................................................................................... 53
Room Temperature Sensor
RmTemp
....................................................... 54
Remote Setpoint
RmtStptPot
................................................................... 55
Setpoint Limits
LoSetptLim and HiSetptLim
............................................. 55
B
pass Mode
StatusOvrd and StatusLed
................................................ 55
BYPASSTIME............................................................................................. 55
OverrideT
pe.............................................................................................. 55
OverridePriorit
........................................................................................... 55
C
cles per Hour
ubHeatCph and ubCoolCph
.......................................... 55
T7770C,D or T7560A,B Wall Module B
pass Pushbutton Operation......... 55
Standb
Mode
StatusOc
Sen
.................................................................. 56
Continuous Unoccupied Mode ................................................................... 56
Occupanc
Mode and Manual Override Arbitration.................................... 56
Time Clock
Occ_Time_Clock
................................................................... 57
Schedule Master
Sched_Master
.............................................................. 57
Setpoint Rampin
....................................................................................... 57
Recover
Rampin
for Heat Pump S
stems.............................................. 57
Fan Operation............................................................................................. 58
Window Sensor
StatusWndw
................................................................... 58
Smoke Control............................................................................................ 58
Demand Limit Control
DLC
...................................................................... 58
Dirt
Filter Monitor ...................................................................................... 59
Start-Up ...................................................................................................... 59
Temperature Control Operations .................................................................... 59
Sta
ed Coolin
Control .............................................................................. 60
Sta
ed Heatin
Control .............................................................................. 60
Cascade Control of Modulatin
Coolin
/Heatin
........................................ 61
Series 60 Modulatin
Control ..................................................................... 61
Pulse Width Modulatin
PWM
Control..................................................... 61
Outdoor Air Lockout of Heatin
/Coolin
..................................................... 61
Economizer Damper Control ...................................................................... 61
Indoor Air Qualit
IAQ
Override ............................................................... 62
Freeze Stat................................................................................................. 62
Dischar
e Air Low Limit Control ................................................................. 62
Economizer Enable/Disable Control........................................................... 62
Appendix C. Complete List of Excel 10 W7750 Controller User Addresses. ....... 62
User Address Indexes
all in alphabetical order
............................................ 63
Mappable User Addresses and Table Number ............................................... 64
Failure Detect User Addresses and Table Number ........................................ 65
Appendix D. Q7750A Excel 10 Zone Mana
er Point Estimatin
Guide...............109
Approximate Memor
Size Estimatin
Procedure. .........................................109
Appendix E. Sensor Data for Calibration. ............................................................ 110
Resistance Sensors. ...................................................................................... 110
Volta
e/Current Sensors. ............................................................................... 112
