31
Unit Configuration Submenu
The
UNIT
sub-menu under the Configuration mode of the lo-
cal display contains general unit configuration items. The sub-
menu which contains these configurations is located at the lo-
cal display under
Configuration
UNIT
.
See Table 32.
Machine Control Type (C.TYP)
This configuration defines the control type and control source
responsible for selecting a cooling, heating, or vent mode and
determines the method by which compressors are staged. The
control types are:
•
C.TYP
= 1 (VAV-RAT) and
C.TYP
= 2 (VAV-SPT)
Both of these configurations refer to standard VAV opera-
tion. If the control is occupied, the supply fan is run contin-
uously and return-air temperature will be used in the
determination of the selection of a cooling mode. VAV-SPT
differs from VAV-RAT only in that during the unoccupied
period, space temperature will be used instead of return-air
temperature to start the fan for 10 minutes to establish an
accurate return-air temperature before the return-air
temperature is allowed to call out any mode.
•
C.TYP
= 3 (TSTAT-MULTI)
This configuration will force the control to monitor the ther-
mostat inputs to make a determination of mode. Unlike tra-
ditional 2-stage thermostat control, the unit is allowed to use
multiple stages of cooling control and perform VAV-type
operation. The control will be able to call out a LOW
COOL or a HIGH COOL mode and maintain a low or high
cool supply air setpoint.
•
C.TYP
= 4 (TSTAT-MULTI2)
This configuration will force the control to monitor the ther-
mostat inputs to make a determination of mode and allow
only multiple stages of control for both heating and cooling.
•
C.TYP
= 5 (SPT-MULTI)
This configuration will force the control to monitor a
space temperature sensor to make a determination of
mode. Unlike traditional 2-stage space temperature con-
trol, the unit is allowed to use multiple stages of cooling
control and perform VAV-type operation. The control will
be able to call out a LOW COOL or a HIGH COOL mode
and maintain a low or high cool supply air setpoint.
•
C.TYP
= 6 (SPT-MULTI2)
This configuration will force the control to monitor the
space temperature sensor to make a determination of mode
and allow multiple stages of control for both heating and
cooling.
Fan Mode (CV.FN)
The Fan Mode configuration can be used for machine control
types (
Configuration
UNIT
C.TYP
) 3, 4, 5, and 6. The
Fan Mode variable establishes the operating sequence for the
supply fan during occupied periods. When set to 1 (Continu-
ous), the fan will operate continuously during occupied peri-
ods. When set to 0 (Automatic), the fan will run only during a
heating or cooling mode.
Remote Switch Config (RM.CF)
The remote switch input is connected to TB6 terminals 1 and 3.
This switch can be used for several remote control functions.
Please refer to the Remote Control Switch Input section on
page 80 for details on its use and operation.
CEM Model Installed (CEM)
This configuration instructs the control to communicate with the
controls expansion module (CEM) over the Local Equipment
Network (LEN) when set to Yes. When the unit is configured for
certain sensors and configurations, this option will be set to Yes
automatically.
Table 32 — Unit Configuration
* For Design Series 4 units, only R410A is valid. If RFG.T is configured to
0 (R22) on Design Series 4 units, RFG.T will change it to 1 (R410A) and
will generate a system Alert indicating that R22 is not a valid option for
this point.
ITEM
EXPANSION
RANGE
UNITS
CCN POINT
DEFAULTS
UNIT
UNIT CONFIGURATION
C.TYP
Machine Control Type
1 to 6
CTRLTYPE
4
CV.FN
Fan Mode (0=Auto, 1=Cont)
0 to 1
FAN_MODE
1
RM.CF
Remote Switch Config
0 to 3
RMTINCFG
0
CEM
CEM Module Installed
Yes/No
CEM_BRD
No
TCS.C
Temp.Cmp.Strt.Cool Factr
0 to 60
min
TCSTCOOL
0
TCS.H
Temp.Cmp.Strt.Heat Factr
0 to 60
min
TCSTHEAT
0
SFS.S
Fan Fail Shuts Down Unit
Yes/No
SFS_SHUT
No
SFS.M
Fan Stat Monitoring Type
0 to 2
SFS_MON
0
VAV.S
VAV Unocc.Fan Retry Time
0 to 720
min
SAMPMINS
50
SIZE
Unit Size (20 to 60)
20 to 60
UNITSIZE
20
DP.XR
Discharge Press. Transducers
Yes/No
DP_TRANS
No
SP.XR
Suct. Pres. Trans. Type
0 to 1
SPXRTYPE
0
RFG.T*
REFRIG: 0=R22, 1=R410A
0 to 1
REFRIG_T
Unit dependent
CND.T
CND HX TYP: 0=RTPF, 1=MCHX
0 to 1
COILTYPE
Unit dependent
MAT.S
MAT Calc Config
0 to 2
MAT_SEL
1
MAT.R
Reset MAT Table Entries?
Yes/No
MATRESET
No
MAT.D
MAT Outside Air Default
0 to 100
%
MATOADOS
20
ALTI
Altitude……..in feet:
0 to 60000
ALTITUDE
0
DLAY
Startup Delay Time
0 to 900
sec
DELAY
0
STAT
TSTAT-Both Heat and Cool
Yes/No
TSTATALL
No
AUX.R
Auxiliary Relay Config
0 to 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 to 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
Summary of Contents for WEATHERMAKER 48A2020
Page 112: ...112 Fig 20 Typical Main Control Box Wiring Schematic 48 50A Units ...
Page 113: ...113 Fig 21 Typical Auxiliary Control Box Wiring Schematic ...
Page 114: ...114 Fig 22 Typical 2 Stage Gas Heat Wiring Schematic Size 060 Units Shown ...
Page 115: ...115 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown TO NEXT PAGE ...
Page 116: ...116 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown cont ...
Page 117: ...117 Fig 24 Typical Electric Heat Control Schematic 50 Series Size 060 Units Shown ...
Page 118: ...118 Fig 25 Typical Controls Option Wiring Schematic SW1 SW2 OR DEHUMIDIFY SWITCH ...
Page 119: ...119 Fig 26 Typical Power Schematic 48 50A2 A3 A4 A5 060 Unit Shown ...
Page 120: ...120 Fig 27 Typical Power Schematic of Greenspeed Low Ambient Option 48 50A 060 Unit Shown ...
Page 121: ...121 Fig 28 Typical Small Chassis Component Location Size 020 035 Units ...
Page 122: ...122 Fig 29 Typical Large Chassis Component Locations Size 040 060 Units ...
Page 185: ...185 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...