134
T801 (Invalid Sensor Enable. Check Building Pressure Mode)
This alert occurs when there has been an illegal combination of
configurations made in the Building Pressure configurations.
If the Building Pressure Control is configured for VFD Power
Exhaust and the return fan CFM sensor (RCFMSENS) is en
-
abled, this alert will be generated. Only the exhaust fan CFM
sensor (ECFMSENS) can be enabled (if installed).
If the Building Pressure Control is configured for VFD Return
Fan or Return Fan Power Exhaust and the exhaust fan CFM
sensor (ECFMSENS) is enabled, this alert will be generated.
Only the return fan CFM sensor (RCFMSENS) can be enabled.
If both RCFMSENS and ECFMSENS are enabled, this alert
will be generated. These are mutally exclusive and only one
can be enabled at a time.
MAJOR SYSTEM COMPONENTS
General
The 48/50N Series package rooftop units with electric cooling and
with gas heating (48N units) or electric cooling and electric or hy
-
dronic heating (50N units) contain the
Comfort
Link electronic
control system that monitors all operations of the rooftop. The
control system is composed of several components as listed below.
Table 93 lists typical wiring diagrams. See Fig. 18-29 for typical
control and power component schematics. Figures 30 and 31
show the layout of the power and control box.
Table 93 —
Component, Power, and Control Drawings
UNIT
NOMINAL TONS
DESCRIPTION
LOCATION
48N
075
Power Wiring
Typical Gas Heat Section Wiring, Low Heat Units
Typical Modulating Gas Heat Section Wiring, Low Heat Units
Typical Power Component Control Wiring, 460 v
Typical Power Component Control Wiring, 575 v
090 to 105
Power Wiring
Typical Gas Heat Section Wiring, Low Heat Units
Typical Modulating Gas Heat Section Wiring, Low Heat Units
Typical Power Component Control Wiring, 460 v
Typical Power Component Control Wiring, 575 v
120 to 150
Power Wiring
Typical Gas Heat Section Wiring
Typical Power Component Control Wiring, 460 v
Typical Power Component Control Wiring, 575 v
ALL
Main Base Board Input/Output Connections
ALL
RXB, EXB, CEM Input/Output Connections
ALL
EXV, SCB Input/Output Connections
ALL
Typical Modulating Gas Heat Unit Control Wiring
ALL
Component Arrangement Power Box
ALL
Component Arrangement Control Box
50N
075
Power Wiring
Typical Electric Heat Unit Control Wiring
Typical Power Component Control Wiring, 460 v
Typical Power Component Control Wiring, 575 v
090 to 150
Power Wiring
Typical Electric Heat Unit Control Wiring
Typical Power Component Control Wiring, 460 v
Typical Power Component Control Wiring, 575 v
ALL
Main Base Board Input/Output Connections
ALL
RXB, EXB, CEM Input/Output Connections
ALL
EXV, SCB Input/Output Connections
ALL
Component Arrangement Power Box
ALL
Component Arrangement Control Box
Содержание WeatherExpert 48N2
Страница 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Страница 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Страница 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Страница 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Страница 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Страница 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Страница 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Страница 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Страница 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Страница 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Страница 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Страница 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Страница 168: ...168 Fig 47 Sensor and Ignition Position Fig 48 Combustion Blower Details SENSOR DETAILS IGNITION DETAILS ...
Страница 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...