Controls
Points List
RTM Module
Binary Inputs
•
Emergency stop
•
External auto/stop
•
Unoccupied/occupied
•
Dirty filter
•
VAV changeover with hydronic heat
Binary Outputs
•
VAV box drive max (VAV units only)
•
CV unoccupied mode indicator (CV units only)
•
Alarm
•
Fan run request
•
Water pump request (water-cooled only)
Analog Input
•
Airside economizer damper minimum position
Analog Output
•
Outside air damper actuator
Heat Module:
•
Analog output
GBAS Module
Binary Inputs
•
Demand limit contacts
Binary Outputs
•
Dirty filter relay
•
Refrigeration fail relay
•
Heat fail relay
•
Supply fan fail relay
•
Active diagnostics
Analog inputs
•
Occupied zone cooling setpoint
•
Occupied zone heating setpoint
•
Unoccupied zone cooling setpoint
•
Unoccupied zone heating setpoint or minimum outside
air flow setpoint
•
Supply air cooling setpoint
•
Supply air heating setpoint
•
Supply air static pressure setpoint
SCXF-SVX01T-EN
ECEM Module
Analog Inputs
•
Return air temperature
•
Return air humidity
In addition, units with a VOM have:
Binary Inputs
•
VOM mode A, unit off
•
VOM mode B, pressurize
•
VOM mode C, exhaust
•
VOM mode D, purge
•
VOM mode E, purge w/duct pressure control
Binary Output
•
V.O. relay
BCI-I option
For BACnet® Points List. refer to ACC-SVP01*-EN.
LCI-I Points List
Refer to the LonTalk™ Communications Interface for
Intellipak and Commercial Self-Contained Integration
Guide, BAS-SVP02*-EN.
Phase Monitor
Unit is equipped with phase monitor in control box. The
phase monitor will protect against phase loss, imbalance
and reversal of line voltage. If a fault occurs, the red LED
will energize. While the fault condition is present, the phase
monitor interrupts the 115V control circuit. If no faults are
observed, a green LED will be energized.
Unit Control Components
The self-contained unit is controlled by a microelectronic
control system that consists of a network of modules.
These modules are referred to as unit control modules
(UCM). In this manual, the acronym UCM refers to the
entire control system network.
These modules perform specific unit functions using
proportional/integral control algorithms. They are mounted
in the unit control panel and are factory wired to their
respective internal components. Each module receives and
interprets information from other unit modules, sensors,
remote panels, and customer binary contacts to satisfy the
applicable request; i.e., economizing, mechanical cooling,
heating, ventilation.
Following is a detailed description of each module's
function.
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