Water Furnace SAH Series Installation Manual page 29

Blower Performance Data Option C cont.
SAH Control Option C AHB Board
The SAH Air Handler with the 'Advanced' control option
expands on the capability of the Aurora 'Advanced' Control
(ABC and AXB) in the compressor section, by adding the
AHB board in the air handler.
NOTE: The Energy Monitoring and Leaving Air
Temperature features at the AHB board are dependent on
the AXB board in the compressor section.
It is highly recommended that the installing/servicing
contractor use an Aurora Interface and Diagnosic Tool
(AID) when installing and servicing an Aurora 'Advanced'
control system.
The AHB board includes the following features:
AHB DIP Switch
DIP 1 - ID: This is the AHB ModBus ID and should always
read Off.
DIP 2 & 3 - Future Use
DIP 4 & 5 - Accessory Relay2: A second, DIP configurable,
accessory relay is provided that can be cycled with the
compressor 1 or 2 , blower, or the Dehumidifier (DH)
input. This is to complement the Accessory 1 Relay on
the ABC board.
Position DIP 4 DIP 5
1 ON ON
Cycles with CC1 first stage of compressor
2 OFF ON
3 ON OFF
4 OFF OFF
AWL – Aurora Weblink
(optional accessory)
AWL is an add-on WiFi router that connects to the ABC
and offers many features:
• Remote access to thermostat settings, schedules, etc.
with your smartphone, tablet or laptop
• Receive Lockout/Fault info via text or e-mail
• View heat pump energy usage from the Internet for the
day, week, month, year or real-time
• Internet AID Tool capability allows remote
troubleshooting for the technician
• Remote AID Tool capability at the heat pump with
smartphone, tablet or laptop for the technician
• Allows data acquisition of the heat pump through
the Internet, see graphs of performance and chart
historical data for the technician
• Stores historical data on SD card
Description
Cycles with Fan or ECM (or G)
or compressor spd 1-6
Cycles with CC2 second stage of
compressor or compressor spd 7-12
Cycles with DH input from ABC board
SAH AIR HANDLER INSTALLATION MANUAL
IntelliZone2 Zoning Compatibility
(Optional IntelliZone2 Communicating Zoning)
A dedicated input to connect and communicate with the
IntelliZone2 (IZ2) zoning system is provided on P7 on the
AHB and AXB. This is a dedicated communication port using
a proprietary ModBus protocol. An AXB in the compressor
section or an AHB in the air handler is required. Consult the
Intellizone2 literature for more information.
Communicating Digital Thermostats
The Aurora controls system also features either mono-
chromatic or color touch screen graphic display thermostats
for user interface. These displays not only feature easy to use
graphical interface but display alerts and faults in plain English.
Many of the features discussed here may not be applicable
without these thermostats.
Energy Monitoring (AXB Board Required in
Compressor Section)
(Standard Sensor Kit on 'Advanced' models)
The Energy Monitoring Kit includes two current transducers
(blower and electric heat) so that the complete power usage
of the air handler can be measured. The AID Tool provides
configuration detail for the type of blower motor, power
adjustment and a line voltage calibration procedure to
improve the accuracy. The information can be displayed on
the AID Tool or selected communicating thermostats. The
TPCM32U03A(*)/04A(*) will display instantaneous energy
use while the color touchscreen TPCC32U01(*) will in addition
display a 13 month history in graph form. Refer to Compressor
Section Start Up Energy Monitoring for configuration details.
Freeze Detection (Air Coil) – uses the FP2 input to protect
against ice formation on the air coil. The FP2 input will
operate exactly like FP1 except that the set point is 30
degrees and is not field adjustable.
Condensate Overflow – fault is recognized when the
impedance between this line and 24 VAC common or
chassis ground drops below 100K ohms for 30 seconds
continuously.
Leaving Air Temperature (AXB Board Required in
Compressor Section)
A leaving air temperature (LAT) thermistor is located near the
blower inlet and can be read via the AID tool or AWL.
Electric Heat Staging
The AHB board provides two stages of auxiliary heat operation.
During normal operation, the first stage of electric heat is
energized 10 seconds after the W command is received. If the
demand continues the second stage is of electric heat will be
energized after 5 minutes. In an Emergency heat operation the
time delay between stage one and stage two will be 2 minutes.
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