27
CONTROLS QUICK START
The following section will provide a quick user guide to setting
up and configuring the N Series units with
Comfort
Link con
-
trols. See Basic Control Usage section on starting on page 4
for information on operating the control.
VAV Units Using Return Air Sensor or Space
Temperature Sensor
To configure the unit, perform the following:
1. The type of control is configured under
Configuration
UNIT
C.TYP
.
Set
C.TYP
to 1 (VAV-RAT) for return
air sensor. Set
C.TYP
to 2 (VAV-SPT) for space tempera
-
ture sensor.
NOTE: For VAV with a space sensor (VAV-SPT), under
Configuration
UNIT
SENS
SPT.S
, enable the space
sensor by setting
SPT.S
to ENBL.
NOTE: Refer to the section on static pressure control for infor
-
mation on how to set up the unit for the type of supply fan con
-
trol desired.
2. The space temperature set points and the supply air set
points are configured under the
Setpoints
menu. The heat
-
ing and cooling set points must be configured. See the
Heating Control and Cooling Control sections for further
description on these configurations. Configure the follow
-
ing set points:
Also configure the following points in the
Configura
-
tion
BP
D.LV.T
menu:
3. To program time schedules, make sure
SCH.N
=1 under
Configuration
IAQ
SC.OV
SCH.N
to configure the
control to use local schedules.
4. Under the
Time Clock
SCH.L
submenu, enter the
desired schedule. See Time Clock Configuration section
for further descriptions of these configurations.
5. Under
Configuration
SP
SP.SP
, the Supply Duct
Static Pressure set point should be configured.
6. If supply air temperature reset is desired, under the
Con
-
figuration
EDT.R
submenu, the following set points
should be configured:
This applies to both TSTAT MULTI and SENSOR MULTI
modes.
NOTE: Configure either
RTIO
and
LIMT
or
RES.S
. All 3 are
not used.
7. See the Economizer Configurations section for additional
economizer option configurations.
8. See the Exhaust Configurations section for addition
exhaust option configurations.
Multi-Stage CV and SAV Units with Mechanical
Thermostat
To configure the unit, perform the following:
1. Under
Configuration
UNIT
C.TYP
, set
C.TYP
to 3
(TSTAT MULTI). See the Economizer Configurations sec
-
tion for additional economizer option configurations.
2. Under the
Setpoints
menu, the following configurations
should be set:
See the Exhaust Configurations section for additional ex
-
haust option configurations.
Multi-Stage CV and SAV Units with Space Sensor
To configure the unit, perform the following:
1. Under
Configuration
UNIT
C.TYP
, set
C.TYP
to 4
(SPT MULTI).
2. Under the
Setpoints
menu, the following configurations
should be set:
3. Under the
Setpoints
menu, the heating and cooling set
points must be configured:
4. Under
Configuration
UNIT
SENS
SPT.S
, enable
the space sensor by setting
SPT.S
to ENBL.
5. Under
Configuration
UNIT
FN.MD
, set
FN.MD
to 1
for continuous fan or 0 for automatic fan.
6. To program time schedules, set
SCH.N
=1 under
Configu
-
ration
IAQ
SC.OV
SCH.N
to configure the control
to use local schedules.
7. Under the
Timeclock
SCH.L
submenu, enter the desired
schedule. See the Time Clock section for further descrip
-
tions of these configurations.
8. See the Economizer Configurations section for additional
economizer option configurations.
9. See the Exhaust Configurations section for additional
exhaust option configurations.
Economizer Configurations
Under the
Configuration
ECON
submenu, the following set
points should be configured:
OHSP
Occupied Heat Set Point
OCSP
Occupied Cool Set Point
UHSP
Unoccupied Heat Set Point
UCSP
Unoccupied Cool Set Point
GAP
Heat-cool Set Point Gap
V.C.ON
VAV Occupied Cool On Delta
V.C.OF
VAV Occupied Cool Off Delta
L.H.ON
Demand Level Low Heat On
L.H.OF
Demand Level Low Heat Off
RS.CF
EDT Reset Configuration
RTIO
Reset Ratio
LIMT
Reset Limit
RES.S
EDT 4-20 mA Reset Input
SA.HI
Supply Air Set Point Hi
SA.LO
Supply Air Set Point Lo
SA.HI
Supply Air Set Point Hi
SA.LO
Supply Air Set Point Lo
OHSP
Occupied Heat Setpoint
OCSP
Occupied Cool Setpoint
UHSP
Unoccupied Heat Setpoint
UCSP
Unoccupied Cool Setpoint
GAP
Heat-Cool Setpoint Gap
D.LV.T
Cool/Heat Set Point Offsets (located in the
Configuration
menu)
EC.EN
Economizer Enabled?
EC.MN
Economizer Min.Position
EC.MX
Economizer Max. Position
E.TRM
Economizer Trim for SumZ?
E.SEL
Econ Changeover Select
OA.E.C
OA Enthalpy Change Over Select
OA.EN
Outdoor Enthalpy Compare Value
OAT.L
High OAT Lockout Temp
O.DEW
OA Dew Point Temp Limit
ORH.S
Outside Air RH Sensor
CFM.C
Outdoor Air CFM Control
E.CFG
Economizer Operation Config
UEFC
Unoccupied Economizer Free Cooling
ACT.C
Economizer Actuator Config
Summary of Contents for WeatherExpert 48N2
Page 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Page 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Page 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Page 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Page 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Page 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Page 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Page 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Page 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Page 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Page 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Page 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Page 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...