United Technologies Carrier Weathermaker 48A2, Controls, Start-Up, Operation, Service, And Troubleshooting

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APPENDIX B — CCN TABLES
All A Series units with Comfort Link controls have a port for
interface with the Carrier Comfort Network ® (CCN) system.
On TB3 there is a J11 jack which can be used for temporary
connection to the CCN network or to computers equipped with
CCN software like the Service Tool. Also on TB3 there are
screw connections that can be used for more permanent CCN
connections.
In the following tables the structure of the tables which are
used with the Service Tool as well as the names and data that
are included in each table are shown. As a reference the equiv-
alent scrolling marquee tables and names are included. There
are several CCN variables that are not displayed through the
scrolling marquee and are used for more extensive diagnostics
and system evaluations.
STATUS DISPLAY TABLES
TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS
COOLING
HVAC Mode…………..: ascii text strings
Control Mode………..: ascii text strings
Current Running Capacity % CAPTOTAL
Cooling Control Point dF COOLCPNT
Evaporator Discharge Tmp dF EDT
Mixed Air Temperature dF MAT
Next Capacity Step Down % CAPNXTDN
Next Capacity Step Up % CAPNXTUP
Capacity Change Needed % CAPERROR
Current Cool State COOL_STG
Maximum Cool Stages CLMAXSTG
COOL_A
Compressor A1 Relay CMPA1
Compressor A1 Feedback CSB_A1
Compressor A1 Timeguard CMPA1_TG
Compressor A2 Relay CMPA2
Compressor A2 Feedback CSB_A2
Compressor A2 Timeguard CMPA2_TG
Minimum Load Valve MLV
Cir A Discharge Pressure PSIG DP_A
Cir A Suction Pressure PSIG SP_A
Cir A Sat.Condensing Tmp dF SCTA
Cir A Sat.Suction Temp. dF SSTA
COOL_B
Compressor B1 Relay CMPB1
Compressor B1 Feedback CSB_B1
Compressor B1 Timeguard CMPB1_TG
Compressor B2 Relay CMPB2
Compressor B2 Feedback CSB_B2
Compressor B2 Timeguard CMPB2_TG
Cir B Discharge Pressure PSIG DP_B
Cir B Suction Pressure PSIG SP_B
Cir B Sat.Condensing Tmp dF SCTB
Cir B Sat.Suction Temp. dF SSTB
ECONDIAG
Economizer Active ? Yes/No ECACTIVE
Conditions which prevent
economizer being active:
Econ Act. Unavailable?
Yes/No ECONUNAV
Remote Econ. Disabled ? Yes/No ECONDISA
DBC - OAT lockout? Yes/No DBC_STAT
DEW - OA Dewpt. lockout? Yes/No DEW_STAT
DDBC- OAT > RAT lockout? Yes/No DDBCSTAT
OAEC- OA Enth Lockout? Yes/No OAECSTAT
DEC - Diff.Enth.Lockout? Yes/No DEC_STAT
EDT Sensor Bad ? Yes/No EDT_STAT
OAT Sensor Bad ? Yes/No OAT_STAT
Economizer forced ? Yes/No ECONFORC
Supply Fan not on 30s ? Yes/No SFONSTAT
Cool Mode not in effect? Yes/No COOL_OFF
OAQ lockout in effect ? Yes/No OAQLOCKD
Econ recovery hold off? Yes/No ECONHELD
Dehumid. disabled Econ.? Yes/No DHDISABL
ECONOMZR
Economizer Act.Curr.Pos. % ECONOPOS
Economizer Act.Cmd.Pos. % ECONOCMD forcible
Economizer Active ? ECACTIVE
Economizer Control Point dF ECONCPNT
Outside Air Temperature dF OAT forcible
Evaporator Discharge Tmp dF EDT
Controlling Return Temp dF RETURN_T forcible