Carrier WEATHERMASTER 48/50Z030-105 - Manual (Page 90)

90
Table 77 — Discharge Pressure
Transducer Pressure (psig) vs Voltage
Forcing Inputs and Outputs — Many of variables
may be forced both from the CCN and directly at the local
display. This can be useful during diagnostic testing and also
during operation, typically as part of an advanced third party
control scheme. Please see Appendix A and B.
NOTE: In the case of a power reset, any force levels in effect
at the time of the power reset will be cleared.
CONTROL LEVEL FORCING — If any of the following
points are forced with a priority level of 7 (consult CCN litera-
ture for a description of priority levels), the software clears the
force from the point if it has not been written to or forced again
within the timeout periods defined below:
Run Status Menu — The Run Status menu provides the
user important information about the unit. The Run Status table
can be used to troubleshoot problems and to help determine
how and why the unit is operating.
AUTO VIEW OF RUN STATUS — The Auto View of Run
Status display table provides the most important unit informa-
tion. The HVAC Mode (Run Status → VIEW → HVAC) in-
forms the user what HVAC mode the unit is currently in. Refer
to the Modes section on page 40 for information on HVAC
modes. The occupied status, unit temperatures, unit set points,
and stage information can also be shown. See Table 78.
Run Status
→ VIEW → HVAC — Displays the current HVAC
Mode(s) by name. HVAC Modes include:
OFF VENT HIGH HEAT
STARTING UP HIGH COOL FIRE SHUT DOWN
SHUTTING DOWN LOW COOL PRESSURIZATION
DISABLED UNOCC FREE COOL EVACUATION
SOFTSTOP REQUEST TEMPERING HICOOL SMOKE PURGE
REM SW DISABLE
TEMPERING LOCOOLDEHUMIDIFICATION
COMP STUCK ON TEMPERING VENT RE-HEAT
TEST LOW HEAT
Run Status → VIEW → OCC — Displays the current occupan-
cy status of the control.
Run Status
→ VIEW → MAT — Displays the current value for
mixed-air temperature. This value is calculated based on
return-air and outside-air temperatures and economizer damper
position.
Run Status
→ VIEW → EDT — Displays the current evapora-
tor discharge air temperature during Cooling modes. This value
is read at the supply air thermistor location (or at cooling coil
thermistor array if unit is equipped with hydronic heating coil).
Run Status
→ VIEW → LAT — Displays the current leaving-
air temperature during Vent and Hydronic Heating modes. This
value is read at the supply air thermistor location.
Run Status
→ VIEW → EC.C.P — Displays the current econo-
mizer control point value (a target value for air temperature
leaving the evaporator coil location).
Run Status
→ VIEW → ECN.P — Displays the current actual
economizer position (in percentage open).
Run Status
→ VIEW → EC2.P — Displays the current posi-
tion of actuator no. 2 (in percentage open).
Run Status
→ VIEW → CL.C.P — Displays the current cool-
ing control point (a target value for air temperature leaving the
evaporator coil location).
Run Status
→ VIEW → C.CAP — Displays the current
amount of unit cooling capacity (in percent of maximum).
Compare to staging tables in Appendix C.
Run Status
→ VIEW → CL.ST — Displays the current number
of requested cooling stages. Compare to staging tables in
Appendix C and to C.CAP above.
Run Status
→ VIEW → HT.C.P — Displays the current heat-
ing control point, for use with staged gas control option only (a
target value for air temperature leaving the supply duct).
Run Status
→ VIEW → HT.ST — Displays the current number
of heating stages active (for staged gas control option only).
Compare to following point.
Run Status
→ VIEW → H.MAX — Displays the maximum
number of heat stages available for this model.
PRESSURE
(psig)
VOLTAGE DROP
(v)
0 0.466
10 0.564
20 0.663
30 0.761
40 0.860
50 0.958
60 1.056
70 1.155
80 1.253
90 1.352
100 1.450
110 1.549
120 1.647
130 1.745
140 1.844
150 1.942
160 2.041
170 2.139
180 2.238
190 2.336
200 2.434
210 2.533
220 2.631
230 2.730
240 2.828
250 2.927
260 3.025
270 3.124
280 3.222
290 3.320
300 3.419
310 3.517
320 3.616
330 3.714
340 3.813
350 3.911
360 4.009
370 4.108
380 4.206
390 4.305
400 4.403
410 4.502
420 4.600
Temperatures
→
AIR.T
→
OAT Outside Air Temperature 30 minutes
Temperatures
→
AIR.T
→
RAT Return Air Temperature 3 minutes
Temperatures
→
AIR.T
→
SPT Space Temperature 3 minutes
Inputs
→
RSET
→
SP.RS Static Pressure Reset 30 minutes
Inputs
→
REL.H
→
OA.RH Outside Air Relative Humidity 30 minutes
Inputs
→
AIR.Q
→
OAQ Outside Air Quality 30 minutes