92
EDT High Alert Limit/Occ (
SA.H.O) — If the space temper-
ature is above the configurable occupied EDT High Alert Limit
(SA.H.O), then Alert 303 will be generated and heating opera-
tion will be stopped but cooling operation will continue. The
alert will automatically reset.
EDT Low Alert Limit/Unocc (
SA.L.U) — If the space tem-
perature is below the configurable unoccupied EDT Low Alert
Limit (SA.L.U), then Alert 302 will be generated and cooling
operation will be stopped but heating operation will continue.
The alert will automatically reset.
EDT High Alert Limit/Unocc (
SA.H.U) — If the space tem-
perature is above the configurable unoccupied EDT High Alert
Limit (SA.H.U), then Alert 303 will be generated and heating
operation will be stopped but cooling operation will continue.
The alert will automatically reset.
RAT Low Alert Limit/Occ (
RA.L.O) — If the return-air tem-
perature is below the configurable occupied RAT Low Alert
Limit (RA.L.O), then Alert 304 will be generated and internal
routines will be modified. Unit operation will continue but
VAV heating operation will be disabled. The alert will automat-
ically reset.
RAT High Alert Limit/Occ (
RA.H.O) — If the return-air
temperature is above the configurable occupied RAT High
Alert Limit (RA.H.O), then Alert 305 will be generated and
operation will continue. The alert will automatically reset.
RAT Low Alert Limit/Unocc (
RA.L.U) — If the return-air
temperature is below the configurable unoccupied RAT Low
Alert Limit (RA.L.U), then Alert 304 will be generated. Unit
operation will continue but VAV heating operation will be dis-
abled. The alert will automatically reset.
RAT High Alert Limit/Unocc (
RA.H.U) — If the return-air
temperature is above the configurable unoccupied RAT High
Alert Limit (RA.H.U), then Alert 305 will be generated. Oper-
ation will continue. The alert will automatically reset.
OAT Low Alert Limit (
OAT.L) — If the outside-air tempera-
ture measured by the OAT thermistor is below the configurable
OAT Low Alert Limit (OAT.L) then Alert T316 will be
generated.
OAT High Alert Limit (
OAT.H) — If the outside-air temper-
ature measured by the OAT thermistor is above the configu-
rable OAT High Alert Limit (OAT.H) then Alert T317 will be
generated.
RARH Low Alert Limit (
R.RH.L) — If the unit is config-
ured to use a return air relative humidity sensor (Configura-
tion
UNIT
SENS
RRH.S), and the measured level is
below the configurable RH Low Alert Limit (R.RH.L), then
Alert 308 will occur. The unit will continue to run and the alert
will automatically reset.
RARH High Alert Limit (
R.RH.H) — If the unit is config-
ured to use a return air relative humidity sensor (Configura-
tion
UNIT
SENS
RRH.S), and the measured level is
above the configurable RARH High Alert Limit (R.RH.H),
then Alert 309 will occur. The unit will continue to run and the
alert will automatically reset.
Table 61 — CCN Configuration
Table 62 — Alert Limit Configuration
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT
CCN CCN CONFIGURATION
CCNA CCN Address 1 - 239 CCNADD 1
CCNB CCN Bus Number 0 - 239 CCNBUS 0
BAUD CCN Baud Rate 1 - 5 CCNBAUDD 3
BROD CCN BROADCST DEFINITIONS
TM.DT CCN Time/Date Broadcast ON/OFF CCNBC On
OAT.B CCN OAT Broadcast ON/OFF OATBC Off
ORH.B CCN OARH Broadcast ON/OFF OARHBC Off
OAQ.B CCN OAQ Broadcast ON/OFF OAQBC Off
G.S.B Global Schedule Broadcst ON/OFF GSBC Off
B.ACK CCN Broadcast Ack'er ON/OFF CCNBCACK Off
SC.OV CCN SCHEDULES-OVERRIDES
SCH.N Schedule Number 0 - 99 SCHEDNUM 1
HOL.T Accept Global Holidays? YES/NO HOLIDAYT No
O.T.L. Override Time Limit 0 - 4 HRS OTL 1
OV.EX Timed Override Hours 0 - 4 HRS OVR_EXT 0
SPT.O SPT Override Enabled ? YES/NO SPT_OVER Yes
T58.O T58 Override Enabled ? YES/NO T58_OVER Yes
GL.OV Global Sched. Override ? YES/NO GLBLOVER No
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT
SP.L.O SPT lo alert limit/occ -10-245 dF SPLO 60
SP.H.O SPT hi alert limit/occ -10-245 dF SPHO 85
SP.L.U SPT lo alert limit/unocc -10-245 dF SPLU 45
SP.H.U SPT hi alert limit/unocc -10-245 dF SPHU 100
SA.L.O EDT lo alert limit/occ -40-245 dF SALO 40
SA.H.O EDT hi alert limit/occ -40-245 dF SAHO 100
SA.L.U EDT lo alert limit/unocc -40-245 dF SALU 40
SA.H.U EDT hi alert limit/unocc -40-245 dF SAHU 100
RA.L.O RAT lo alert limit/occ -40-245 dF RALO 60
RA.H.O RAT hi alert limit/occ -40-245 dF RAHO 90
RA.L.U RAT lo alert limit/unocc -40-245 dF RALU 40
RA.H.U RAT hi alert limit/unocc -40-245 dF RAHU 100
OAT.L OAT lo alert limit -40-245 dF OATL -40
OAT.H OAT hi alert limit -40-245 dF OATH 150
R.RH.L RARH low alert limit 0-100 % RRHL 0
R.RH.H RARH high alert limit 0-100 % RRHH 100
O.RH.L OARH low alert limit 0-100 % ORHL 0
O.RH.H OARH high alert limit 0-100 % ORHH 100
SP.L SP low alert limit 0-5 "H2O SPL 0
SP.H SP high alert limit 0-5 "H2O SPH 2
BP.L BP lo alert limit -0.25-0.25 "H2O BPL -0.25
BP.H BP high alert limit -0.25-0.25 "H2O BPH 0.25
IAQ.H IAQ high alert limit 0-5000 IAQH 1200
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