United Technologies Carrier Weathermaker 48A2, Управление, пуск, эксплуатация, обслуживание и устранение неисправностей., Страница: 31 / 208

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Condenser Type ( CND.T ) — This configuration specifies the
type of condenser installed in the unit. Configuration CND.T is
set to 0 if the condenser is a round tube, plate fin coil (RTPF).
Configuration CND.T is set to 1 if the condenser is a micro-
channel heat exchanger coil (MCHX).
MAT Calc Config (
MAT.S ) — This configuration gives the
user three options in the processing of the mixed-air tempera-
ture (MAT) calculation:
•
MAT.S = 0
There will be no MAT calculation.
• MAT.S = 1
The control will attempt to learn MAT over time. Any time
the system is in a vent mode and the economizer stays at a
particular position for long enough, MAT is set to equal
EDT. Using this, the control has an internal table whereby it
can more closely determine the true MAT value.
• MAT.S = 2
The control will not attempt to learn MAT over time.
To calculate MAT linearly, the user should reset the MAT
table entries by setting MAT.R to YES. Then set MAT.S = 2 .
The control will calculate MAT based on the position of the
economizer, outside-air temperature, and return-air
temperature.
To freeze the MAT table entries, let the unit run with
MAT.S
= 1 . Once sufficient data has been collected, change MAT.S
= 2 . Do not reset the MAT table.
Reset MAT Table Entries? ( MAT.R ) — This configuration al-
lows the user to reset the internally stored MAT learned config-
uration data back to the default values. The defaults are set to a
linear relationship between the economizer damper position
and OAT and RAT in the calculation of MAT.
MAT Outside Air Position Default (
MAT.D ) — This config-
uration is used to calculate MAT when the economizer option
is disabled. The configuration is adjustable from 0 to 100%
outside air. This defines the fixed ventilation position that will
be used to correctly calculate MAT.
Altitude……..In Feet: (
ALTI ) — The control does not in-
clude a barometric pressure sensor to determine altitude. The
altitude must be defined the calculation of enthalpy and cfm.
The altitude parameter is used to set up a default barometric
pressure for use with calculations. The effect of barometric
pressure in these calculations is not great, but could have an
effect depending on the installed elevation of the unit. If the
unit is installed at a particularly high altitude and enthalpy or
cfm are being calculated, set this configuration to the current
elevation.
Start Up Delay Time (
DLAY ) — This option delays the unit
from operating after a power reset. The configuration may be
adjusted from 0 to 900 seconds of delay.
TSTAT — Both Heat and Cool (
STAT ) — This option, if en-
abled, allows both heating and cooling requests to be made at
the same time. If the unit is configured for staged gas heat, and
if a cooling request is initiated (Y1 or Y2), then W1 initiates re-
heat and W2 initiates dehumidification.
Auxiliary Relay Configuration (
AUX.R ) — This option con-
figures the auxiliary relay on the MBB (RLY11). The function
of this relay is configurable in the following ways:
•
AUX.R = 0 (Alarm Output) — The relay is used for remote
annunciation of an alarm state.
• AUX.R = 1 (Dehum-Reheat) — The relay is used as a dehu-
midification/reheat output.
• AUX.R = 2 (Occup. State) — The relay is used to reflect
occupancy. When the control is in occupied mode, the relay
will be ON. When the control is in unoccupied mode, the
relay will be OFF.
• AUX.R = 3 (S. Fan State) — The relay is used to reflect the
supply fan commanded state. When the supply fan is on, the
relay will be ON. When the supply fan is off, the relay will
be OFF.
Space Temp Sensor ( SPT.S ) — If a space temperature sensor
is installed, this configuration should be enabled.
Space Temp Offset Sensor (
SP.O.S ) — If a space tempera-
ture sensor with a space temperature offset slider is installed
(T56), this configuration should be enabled.
Space Temp Offset Range (
SP.O.R ) — If a space temperature
offset sensor is installed, it is possible to configure the range of
the slider by adjusting this range configuration.
Return RH Sensor (
RRH.S ) — If a return air relative humidi-
ty sensor is installed, this configuration should be enabled.
Filter Status Switch Enabled? (
FLT.S ) — If a filter status
switch is installed, enable this configuration to begin the moni-
toring of the filter status input ( Inputs

GEN.I

FLT.S ). See
the Dirty Filter Switch section on page 57 for more details on
installation and operation.
Table 32 — Unit Configuration
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULTS
UNIT UNIT CONFIGURATION
C.TYP Machine Control Type 1 - 6 CTRLTYPE 4
CV.FN Fan Mode (0=Auto, 1=Cont) 0 - 1 FAN_MODE 1
RM.CF Remote Switch Config 0 - 3 RMTINCFG 0
CEM CEM Module Installed Yes/No CEM_BRD No
TCS.C Temp.Cmp.Strt.Cool Factr 0 - 60 min TCSTCOOL 0
TCS.H Temp.Cmp.Strt.Heat Factr 0 - 60 min TCSTHEAT 0
SFS.S Fan Fail Shuts Down Unit Yes/No SFS_SHUT No
SFS.M Fan Stat Monitoring Type 0 - 2 SFS_MON 0
VAV.S VAV Unocc.Fan Retry Time 0 - 720 min SAMPMINS 50
SIZE Unit Size (20-60) 20 - 60 UNITSIZE 20
DP.XR Discharge Press. Transducers Yes/No DP_TRANS No
SP.XR Suct. Pres. Trans. Type 0 - 1 SPXRTYPE 0
RFG.T REFRIG: 0=R22, 1=R410A 0 - 1 REFRIG_T Unit dependent
CND.T CND HX TYP: 0=RTPF, 1=MCHX 0 - 1 COILTYPE Unit dependent
MAT.S MAT Calc Config 0 - 2 MAT_SEL 1
MAT.R Reset MAT Table Entries? Yes/No MATRESET No
MAT.D MAT Outside Air Default 0-100 % MATOADOS 20
ALTI Altitude……..in feet: 0 - 60000 ALTITUDE 0
DLAY Startup Delay Time 0 - 900 sec DELAY 0
STAT TSTAT-Both Heat and Cool Yes/No TSTATALL No
AUX.R Auxiliary Relay Config 0 - 3 AUXRELAY 0
SENS INPUT SENSOR CONFIG
SPT.S Space Temp Sensor Enable/Disable SPTSENS Disable
SP.O.S Space Temp Offset Sensor Enable/Disable SPTOSENS Disable
SP.O.R Space Temp Offset Range 1 - 10 SPTO_RNG 5
RRH.S Return Air RH Sensor Enable/Disable RARHSENS Disable
FLT.S Filter Stat.Sw.Enabled ? Enable/Disable FLTS_ENA Disable