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AFFINITY DUAL CAPACITY HYDRONIC INSTALLATION MANUAL
The Aurora Base Control System
Aurora Control Features
Description
Aurora ‘Base’
Aurora 'Advanced'
Microprocessor Compressor Control
Microprocessor control of compressor for timings with FP1, HP,
LP, Condensate, assignable Acc relay
•
•
Advanced Microprocessor Features
Smart Grid, Home Automation Alarm Inputs, and Accessory2
Relay (HRV/ERV)
-
•
Base Loop Pump Control
Compressor Contactor powers Loop Pump and no loop pump
linking capability.
•
See below
Compressor Monitoring
Control monitors compressor starts for high current, missing leg
etc.
-
•
Smart Grid/Utility Input
Allows simple input to externally enable of occupied/unoccu-
pied mode for basic utility time of use programs.
-
Dry Contact x1
Aurora ‘Base’ Control
The Aurora ‘Base’ Control
(ABC) System is a complete
residential and commercial
comfort system that brings
all aspects of the HVAC
system into one cohesive
module network. The ABC
features microprocessor
control and HP, LP,
condensate and freeze detection, over/under voltage
faults, along with communicating thermostat capability for
complete fault detection text at the thermostat.
Aurora uses the Modbus communication protocol to
communicate between modules. Each module contains
the logic to control all features that are connected to
the module. The Aurora ‘Base’ Control (ABC) has two
Modbus channels. The first channel is configured as a
master for connecting to devices such as a communicating
thermostat, expansion board, or other slave devices. The
second channel is configured as a slave for connecting the
Aurora Interface Diagnostics Tool (AID Tool).
Aurora ‘Advanced’ Control
The Aurora ‘Advanced’
Control expands on the
capability of the Aurora
‘Base’ Control (ABC) System
by adding the Aurora
Expansion Board (AXB).
The additional features
include compressor current
monitoring, loop pump
linking, intelligent hot water
generator control, variable
speed pump capability, and
also allows for optional energy,
refrigeration, and performance
monitoring factory installed add-
on sensor kits. The AXB also features a second
field configurable accessory relay, and two home
automation inputs that are AID configurable
for different types of alarms from sump pumps
to home security. The Smart Grid input is AID
configurable with many options to react to
Utility controlled relay operation for ON Peak
optimization.
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